Serveur d'exploration sur le patient édenté

Attention, ce site est en cours de développement !
Attention, site généré par des moyens informatiques à partir de corpus bruts.
Les informations ne sont donc pas validées.

Miniaturization and its effects on cranial morphology in plethodontid salamanders, genus Thorius (Amphibia: Plethodontidae). I. Osteological variation

Identifieur interne : 001472 ( Istex/Corpus ); précédent : 001471; suivant : 001473

Miniaturization and its effects on cranial morphology in plethodontid salamanders, genus Thorius (Amphibia: Plethodontidae). I. Osteological variation

Auteurs : J. Hanken

Source :

RBID : ISTEX:2AA87502023A80ED44EA7561CEB044C2A37A12A2

English descriptors

Abstract

Cranial skeletal morphology, ontogeny and variation are examined in five species of Thorius, a genus of diminutive plethodontid salamanders that are among the smallest, extant, tailed tetrapods. The skull of adull Thorius is characterized by: (1) limited development or absence of several ossified elements and dentition; (2) increased inter‐and intraspecific variability; (3) novel morphological configurations of the braincase and jaw suspensorium. Posthatching cranial mineralization in all species of Thorius is truncated precociously with respect to that typical of larger and more generalized plethodontid genera, such as Pseudoeurycea. These features implicate paedomorphosis as a predominant mechanism responsible for the evolution of decreased size in Thorius from larger plethodontid ancestors. Interspecific differences in cranial morphology are evident; species may be characterized by greater or lesser degrees of truncated development. However, there is no consistent relationship between degree of paedomorphosis and mean adult body size in interspecific comparisons. Adult morphology of several individual elements represent potentially useful taxonomic characters for distinguishing species. Reduction, increased variability, and morphological novelty are common to many lineages of dwarfed taxa. They represent a null hypothesis for examination of the developmental mechanisms and morphological consequences of miniaturization in other groups.

Url:
DOI: 10.1111/j.1095-8312.1984.tb00806.x

Links to Exploration step

ISTEX:2AA87502023A80ED44EA7561CEB044C2A37A12A2

Le document en format XML

<record>
<TEI wicri:istexFullTextTei="biblStruct">
<teiHeader>
<fileDesc>
<titleStmt>
<title xml:lang="en">Miniaturization and its effects on cranial morphology in plethodontid salamanders, genus Thorius (Amphibia: Plethodontidae). I. Osteological variation</title>
<author>
<name sortKey="Hanken, J" sort="Hanken, J" uniqKey="Hanken J" first="J." last="Hanken">J. Hanken</name>
<affiliation>
<mods:affiliation>Museum of Vertebrate Zoology, 2593 Life Sciences Building, University of California, Berkeley, California 94720, U.S.A.</mods:affiliation>
</affiliation>
</author>
</titleStmt>
<publicationStmt>
<idno type="wicri:source">ISTEX</idno>
<idno type="RBID">ISTEX:2AA87502023A80ED44EA7561CEB044C2A37A12A2</idno>
<date when="1984" year="1984">1984</date>
<idno type="doi">10.1111/j.1095-8312.1984.tb00806.x</idno>
<idno type="url">https://api.istex.fr/document/2AA87502023A80ED44EA7561CEB044C2A37A12A2/fulltext/pdf</idno>
<idno type="wicri:Area/Istex/Corpus">001472</idno>
<idno type="wicri:explorRef" wicri:stream="Istex" wicri:step="Corpus" wicri:corpus="ISTEX">001472</idno>
</publicationStmt>
<sourceDesc>
<biblStruct>
<analytic>
<title level="a" type="main">Miniaturization and its effects on cranial morphology in plethodontid salamanders, genus
<hi rend="italic">Thorius</hi>
(Amphibia: Plethodontidae). I. Osteological variation</title>
<author>
<name sortKey="Hanken, J" sort="Hanken, J" uniqKey="Hanken J" first="J." last="Hanken">J. Hanken</name>
<affiliation>
<mods:affiliation>Museum of Vertebrate Zoology, 2593 Life Sciences Building, University of California, Berkeley, California 94720, U.S.A.</mods:affiliation>
</affiliation>
</author>
</analytic>
<monogr></monogr>
<series>
<title level="j" type="main">Biological Journal of the Linnean Society</title>
<title level="j" type="alt">BIOLOGICAL JOURNAL LINNEAN SOCIETY</title>
<idno type="ISSN">0024-4066</idno>
<idno type="eISSN">1095-8312</idno>
<imprint>
<biblScope unit="vol">23</biblScope>
<biblScope unit="issue">1</biblScope>
<biblScope unit="page" from="55">55</biblScope>
<biblScope unit="page" to="75">75</biblScope>
<biblScope unit="page-count">21</biblScope>
<publisher>Blackwell Publishing Ltd</publisher>
<pubPlace>Oxford, UK</pubPlace>
<date type="published" when="1984-09">1984-09</date>
</imprint>
<idno type="ISSN">0024-4066</idno>
</series>
</biblStruct>
</sourceDesc>
<seriesStmt>
<idno type="ISSN">0024-4066</idno>
</seriesStmt>
</fileDesc>
<profileDesc>
<textClass>
<keywords scheme="KwdEn" xml:lang="en">
<term>Adult body size</term>
<term>Adult females</term>
<term>Adult males</term>
<term>Adult size determination</term>
<term>Adult skull</term>
<term>Adult thorius</term>
<term>Alberch</term>
<term>Alberch alberch</term>
<term>Amphibia</term>
<term>Ancestral mineralization sequence</term>
<term>Angeles counly</term>
<term>Anterior elements</term>
<term>Anterior skull region</term>
<term>Anteriorly</term>
<term>Biological reviews</term>
<term>Body size</term>
<term>Character state</term>
<term>Character states</term>
<term>Cranial</term>
<term>Cranial elements</term>
<term>Cranial mineralization</term>
<term>Cranial morphology</term>
<term>Cranial ossification</term>
<term>Cranial osteology</term>
<term>Cranial reduction</term>
<term>Developmental mechanisms</term>
<term>Direct contact</term>
<term>Dorsal view</term>
<term>Evolutionary morphology</term>
<term>Extensive intraspecific variation</term>
<term>External naris</term>
<term>Extreme reduction</term>
<term>Facial lobe</term>
<term>Family plethodontidae</term>
<term>Fontanelle</term>
<term>Frequency variation</term>
<term>Full range</term>
<term>Functional analysis</term>
<term>General features</term>
<term>Generalized plethodontid salamanders</term>
<term>Genus</term>
<term>Genus thorius</term>
<term>Graduate student</term>
<term>Hanken</term>
<term>Individual elements</term>
<term>Internasal fontanelle</term>
<term>Interspecific comparisons</term>
<term>Interspecific differences</term>
<term>Intrapopulational variation</term>
<term>Intraspecific variation</term>
<term>Kansas science bullelin</term>
<term>Larger plethodontid salamanders</term>
<term>Larger salamanders</term>
<term>Larger species</term>
<term>Lateral view</term>
<term>Lineage</term>
<term>Linear array</term>
<term>Linnean society</term>
<term>Lombard wake</term>
<term>Lungless salamanders</term>
<term>Macdougalli</term>
<term>Many lineages</term>
<term>Many species</term>
<term>Marine sand</term>
<term>Marshall corruccini</term>
<term>Maxilla</term>
<term>Maxilla overlap</term>
<term>Maxillary</term>
<term>Maxillary teeth</term>
<term>Mineralization</term>
<term>Miniaturization</term>
<term>Morphological</term>
<term>Morphological diversity</term>
<term>Morphological evolution</term>
<term>Morphological novelty</term>
<term>Morphological variation</term>
<term>Morphology</term>
<term>Narisovalis</term>
<term>Nasal</term>
<term>Nasal capsule</term>
<term>Nasal capsules</term>
<term>Nasal development</term>
<term>Nasalmaxilla overlap</term>
<term>Neotropical</term>
<term>Null hypothesis</term>
<term>Ontogeny</term>
<term>Osteological characters</term>
<term>Other characters</term>
<term>Other genera</term>
<term>Other groups</term>
<term>Other plethodontid genera</term>
<term>Otic capsule</term>
<term>Otic capsules</term>
<term>Overlap</term>
<term>Paedomorphosis</term>
<term>Pennatulus</term>
<term>Phylogenetic</term>
<term>Phylogenetic relationship</term>
<term>Phylogenetic size decrease</term>
<term>Plethodontid</term>
<term>Plethodontid salamanders</term>
<term>Plethodontidae</term>
<term>Posthatching cranial mineralization</term>
<term>Posthatching mineralization sequence</term>
<term>Prefrontal</term>
<term>Prefrontal articulates</term>
<term>Prefrontal development</term>
<term>Premaxilla</term>
<term>Premaxillary</term>
<term>Premaxillary teeth</term>
<term>Prominent cartilaginous</term>
<term>Prov</term>
<term>Quantitative estimates</term>
<term>Relative size</term>
<term>Salamander</term>
<term>Schmidti</term>
<term>Septomaxilla</term>
<term>Septomaxilla development</term>
<term>Several genera</term>
<term>Several species</term>
<term>Sexual maturity</term>
<term>Single adult</term>
<term>Single value</term>
<term>Size change</term>
<term>Size decrease</term>
<term>Skeletal growth</term>
<term>Skeletal reduction</term>
<term>Skull</term>
<term>Small juveniles</term>
<term>Smaller species</term>
<term>Special sense organs</term>
<term>Species sample</term>
<term>Tailed tetrapods</term>
<term>Thorius</term>
<term>Ventral</term>
<term>Ventral view</term>
<term>Vertebrate</term>
<term>Vertebrate zoology</term>
<term>Vertical orientation</term>
<term>Volcan orizaba</term>
<term>Wake elias</term>
</keywords>
<keywords scheme="Teeft" xml:lang="en">
<term>Adult body size</term>
<term>Adult females</term>
<term>Adult males</term>
<term>Adult size determination</term>
<term>Adult skull</term>
<term>Adult thorius</term>
<term>Alberch</term>
<term>Alberch alberch</term>
<term>Amphibia</term>
<term>Ancestral mineralization sequence</term>
<term>Angeles counly</term>
<term>Anterior elements</term>
<term>Anterior skull region</term>
<term>Anteriorly</term>
<term>Biological reviews</term>
<term>Body size</term>
<term>Character state</term>
<term>Character states</term>
<term>Cranial</term>
<term>Cranial elements</term>
<term>Cranial mineralization</term>
<term>Cranial morphology</term>
<term>Cranial ossification</term>
<term>Cranial osteology</term>
<term>Cranial reduction</term>
<term>Developmental mechanisms</term>
<term>Direct contact</term>
<term>Dorsal view</term>
<term>Evolutionary morphology</term>
<term>Extensive intraspecific variation</term>
<term>External naris</term>
<term>Extreme reduction</term>
<term>Facial lobe</term>
<term>Family plethodontidae</term>
<term>Fontanelle</term>
<term>Frequency variation</term>
<term>Full range</term>
<term>Functional analysis</term>
<term>General features</term>
<term>Generalized plethodontid salamanders</term>
<term>Genus</term>
<term>Genus thorius</term>
<term>Graduate student</term>
<term>Hanken</term>
<term>Individual elements</term>
<term>Internasal fontanelle</term>
<term>Interspecific comparisons</term>
<term>Interspecific differences</term>
<term>Intrapopulational variation</term>
<term>Intraspecific variation</term>
<term>Kansas science bullelin</term>
<term>Larger plethodontid salamanders</term>
<term>Larger salamanders</term>
<term>Larger species</term>
<term>Lateral view</term>
<term>Lineage</term>
<term>Linear array</term>
<term>Linnean society</term>
<term>Lombard wake</term>
<term>Lungless salamanders</term>
<term>Macdougalli</term>
<term>Many lineages</term>
<term>Many species</term>
<term>Marine sand</term>
<term>Marshall corruccini</term>
<term>Maxilla</term>
<term>Maxilla overlap</term>
<term>Maxillary</term>
<term>Maxillary teeth</term>
<term>Mineralization</term>
<term>Miniaturization</term>
<term>Morphological</term>
<term>Morphological diversity</term>
<term>Morphological evolution</term>
<term>Morphological novelty</term>
<term>Morphological variation</term>
<term>Morphology</term>
<term>Narisovalis</term>
<term>Nasal</term>
<term>Nasal capsule</term>
<term>Nasal capsules</term>
<term>Nasal development</term>
<term>Nasalmaxilla overlap</term>
<term>Neotropical</term>
<term>Null hypothesis</term>
<term>Ontogeny</term>
<term>Osteological characters</term>
<term>Other characters</term>
<term>Other genera</term>
<term>Other groups</term>
<term>Other plethodontid genera</term>
<term>Otic capsule</term>
<term>Otic capsules</term>
<term>Overlap</term>
<term>Paedomorphosis</term>
<term>Pennatulus</term>
<term>Phylogenetic</term>
<term>Phylogenetic relationship</term>
<term>Phylogenetic size decrease</term>
<term>Plethodontid</term>
<term>Plethodontid salamanders</term>
<term>Plethodontidae</term>
<term>Posthatching cranial mineralization</term>
<term>Posthatching mineralization sequence</term>
<term>Prefrontal</term>
<term>Prefrontal articulates</term>
<term>Prefrontal development</term>
<term>Premaxilla</term>
<term>Premaxillary</term>
<term>Premaxillary teeth</term>
<term>Prominent cartilaginous</term>
<term>Prov</term>
<term>Quantitative estimates</term>
<term>Relative size</term>
<term>Salamander</term>
<term>Schmidti</term>
<term>Septomaxilla</term>
<term>Septomaxilla development</term>
<term>Several genera</term>
<term>Several species</term>
<term>Sexual maturity</term>
<term>Single adult</term>
<term>Single value</term>
<term>Size change</term>
<term>Size decrease</term>
<term>Skeletal growth</term>
<term>Skeletal reduction</term>
<term>Skull</term>
<term>Small juveniles</term>
<term>Smaller species</term>
<term>Special sense organs</term>
<term>Species sample</term>
<term>Tailed tetrapods</term>
<term>Thorius</term>
<term>Ventral</term>
<term>Ventral view</term>
<term>Vertebrate</term>
<term>Vertebrate zoology</term>
<term>Vertical orientation</term>
<term>Volcan orizaba</term>
<term>Wake elias</term>
</keywords>
</textClass>
</profileDesc>
</teiHeader>
<front>
<div type="abstract" xml:lang="en">Cranial skeletal morphology, ontogeny and variation are examined in five species of Thorius, a genus of diminutive plethodontid salamanders that are among the smallest, extant, tailed tetrapods. The skull of adull Thorius is characterized by: (1) limited development or absence of several ossified elements and dentition; (2) increased inter‐and intraspecific variability; (3) novel morphological configurations of the braincase and jaw suspensorium. Posthatching cranial mineralization in all species of Thorius is truncated precociously with respect to that typical of larger and more generalized plethodontid genera, such as Pseudoeurycea. These features implicate paedomorphosis as a predominant mechanism responsible for the evolution of decreased size in Thorius from larger plethodontid ancestors. Interspecific differences in cranial morphology are evident; species may be characterized by greater or lesser degrees of truncated development. However, there is no consistent relationship between degree of paedomorphosis and mean adult body size in interspecific comparisons. Adult morphology of several individual elements represent potentially useful taxonomic characters for distinguishing species. Reduction, increased variability, and morphological novelty are common to many lineages of dwarfed taxa. They represent a null hypothesis for examination of the developmental mechanisms and morphological consequences of miniaturization in other groups.</div>
</front>
</TEI>
<istex>
<corpusName>wiley</corpusName>
<keywords>
<teeft>
<json:string>thorius</json:string>
<json:string>prefrontal</json:string>
<json:string>septomaxilla</json:string>
<json:string>maxilla</json:string>
<json:string>cranial</json:string>
<json:string>hanken</json:string>
<json:string>plethodontid</json:string>
<json:string>premaxilla</json:string>
<json:string>premaxillary</json:string>
<json:string>maxillary</json:string>
<json:string>miniaturization</json:string>
<json:string>mineralization</json:string>
<json:string>alberch</json:string>
<json:string>macdougalli</json:string>
<json:string>nasal</json:string>
<json:string>ontogeny</json:string>
<json:string>maxillary teeth</json:string>
<json:string>premaxillary teeth</json:string>
<json:string>salamander</json:string>
<json:string>schmidti</json:string>
<json:string>plethodontidae</json:string>
<json:string>fontanelle</json:string>
<json:string>genus</json:string>
<json:string>amphibia</json:string>
<json:string>paedomorphosis</json:string>
<json:string>prov</json:string>
<json:string>morphology</json:string>
<json:string>pennatulus</json:string>
<json:string>size decrease</json:string>
<json:string>anteriorly</json:string>
<json:string>phylogenetic</json:string>
<json:string>plethodontid salamanders</json:string>
<json:string>nasal capsule</json:string>
<json:string>ventral</json:string>
<json:string>morphological novelty</json:string>
<json:string>body size</json:string>
<json:string>adult thorius</json:string>
<json:string>sexual maturity</json:string>
<json:string>narisovalis</json:string>
<json:string>neotropical</json:string>
<json:string>other plethodontid genera</json:string>
<json:string>cranial morphology</json:string>
<json:string>skull</json:string>
<json:string>larger salamanders</json:string>
<json:string>adult body size</json:string>
<json:string>ventral view</json:string>
<json:string>null hypothesis</json:string>
<json:string>vertebrate</json:string>
<json:string>overlap</json:string>
<json:string>cranial mineralization</json:string>
<json:string>angeles counly</json:string>
<json:string>facial lobe</json:string>
<json:string>phylogenetic size decrease</json:string>
<json:string>character states</json:string>
<json:string>nasal development</json:string>
<json:string>adult males</json:string>
<json:string>single value</json:string>
<json:string>internasal fontanelle</json:string>
<json:string>alberch alberch</json:string>
<json:string>lateral view</json:string>
<json:string>other genera</json:string>
<json:string>full range</json:string>
<json:string>morphological evolution</json:string>
<json:string>extreme reduction</json:string>
<json:string>lungless salamanders</json:string>
<json:string>volcan orizaba</json:string>
<json:string>maxilla overlap</json:string>
<json:string>genus thorius</json:string>
<json:string>several genera</json:string>
<json:string>many lineages</json:string>
<json:string>direct contact</json:string>
<json:string>adult females</json:string>
<json:string>character state</json:string>
<json:string>otic capsule</json:string>
<json:string>external naris</json:string>
<json:string>lineage</json:string>
<json:string>morphological</json:string>
<json:string>other groups</json:string>
<json:string>species sample</json:string>
<json:string>adult skull</json:string>
<json:string>special sense organs</json:string>
<json:string>cranial elements</json:string>
<json:string>intraspecific variation</json:string>
<json:string>anterior skull region</json:string>
<json:string>quantitative estimates</json:string>
<json:string>cranial osteology</json:string>
<json:string>adult size determination</json:string>
<json:string>phylogenetic relationship</json:string>
<json:string>generalized plethodontid salamanders</json:string>
<json:string>dorsal view</json:string>
<json:string>family plethodontidae</json:string>
<json:string>prominent cartilaginous</json:string>
<json:string>marshall corruccini</json:string>
<json:string>otic capsules</json:string>
<json:string>interspecific differences</json:string>
<json:string>marine sand</json:string>
<json:string>nasal capsules</json:string>
<json:string>relative size</json:string>
<json:string>morphological diversity</json:string>
<json:string>single adult</json:string>
<json:string>larger species</json:string>
<json:string>smaller species</json:string>
<json:string>intrapopulational variation</json:string>
<json:string>frequency variation</json:string>
<json:string>nasalmaxilla overlap</json:string>
<json:string>evolutionary morphology</json:string>
<json:string>small juveniles</json:string>
<json:string>osteological characters</json:string>
<json:string>prefrontal development</json:string>
<json:string>posthatching mineralization sequence</json:string>
<json:string>developmental mechanisms</json:string>
<json:string>skeletal growth</json:string>
<json:string>prefrontal articulates</json:string>
<json:string>septomaxilla development</json:string>
<json:string>wake elias</json:string>
<json:string>individual elements</json:string>
<json:string>functional analysis</json:string>
<json:string>lombard wake</json:string>
<json:string>interspecific comparisons</json:string>
<json:string>anterior elements</json:string>
<json:string>extensive intraspecific variation</json:string>
<json:string>linear array</json:string>
<json:string>cranial reduction</json:string>
<json:string>ancestral mineralization sequence</json:string>
<json:string>several species</json:string>
<json:string>many species</json:string>
<json:string>other characters</json:string>
<json:string>skeletal reduction</json:string>
<json:string>larger plethodontid salamanders</json:string>
<json:string>vertical orientation</json:string>
<json:string>size change</json:string>
<json:string>general features</json:string>
<json:string>morphological variation</json:string>
<json:string>cranial ossification</json:string>
<json:string>graduate student</json:string>
<json:string>vertebrate zoology</json:string>
<json:string>biological reviews</json:string>
<json:string>posthatching cranial mineralization</json:string>
<json:string>kansas science bullelin</json:string>
<json:string>tailed tetrapods</json:string>
<json:string>linnean society</json:string>
</teeft>
</keywords>
<author>
<json:item>
<name>J. HANKEN</name>
<affiliations>
<json:string>Museum of Vertebrate Zoology, 2593 Life Sciences Building, University of California, Berkeley, California 94720, U.S.A.</json:string>
</affiliations>
</json:item>
</author>
<subject>
<json:item>
<lang>
<json:string>eng</json:string>
</lang>
<value>Amphibia</value>
</json:item>
<json:item>
<lang>
<json:string>eng</json:string>
</lang>
<value>Caudata</value>
</json:item>
<json:item>
<lang>
<json:string>eng</json:string>
</lang>
<value>Plethodontidae</value>
</json:item>
<json:item>
<lang>
<json:string>eng</json:string>
</lang>
<value>Thorius</value>
</json:item>
<json:item>
<lang>
<json:string>eng</json:string>
</lang>
<value>skulls</value>
</json:item>
<json:item>
<lang>
<json:string>eng</json:string>
</lang>
<value>morphological variation</value>
</json:item>
<json:item>
<lang>
<json:string>eng</json:string>
</lang>
<value>paedomorphosis</value>
</json:item>
<json:item>
<lang>
<json:string>eng</json:string>
</lang>
<value>dwarfism</value>
</json:item>
</subject>
<articleId>
<json:string>BIJ55</json:string>
</articleId>
<arkIstex>ark:/67375/WNG-Z45PM323-1</arkIstex>
<language>
<json:string>eng</json:string>
</language>
<originalGenre>
<json:string>article</json:string>
</originalGenre>
<abstract>Cranial skeletal morphology, ontogeny and variation are examined in five species of Thorius, a genus of diminutive plethodontid salamanders that are among the smallest, extant, tailed tetrapods. The skull of adull Thorius is characterized by: (1) limited development or absence of several ossified elements and dentition; (2) increased inter‐and intraspecific variability; (3) novel morphological configurations of the braincase and jaw suspensorium. Posthatching cranial mineralization in all species of Thorius is truncated precociously with respect to that typical of larger and more generalized plethodontid genera, such as Pseudoeurycea. These features implicate paedomorphosis as a predominant mechanism responsible for the evolution of decreased size in Thorius from larger plethodontid ancestors. Interspecific differences in cranial morphology are evident; species may be characterized by greater or lesser degrees of truncated development. However, there is no consistent relationship between degree of paedomorphosis and mean adult body size in interspecific comparisons. Adult morphology of several individual elements represent potentially useful taxonomic characters for distinguishing species. Reduction, increased variability, and morphological novelty are common to many lineages of dwarfed taxa. They represent a null hypothesis for examination of the developmental mechanisms and morphological consequences of miniaturization in other groups.</abstract>
<qualityIndicators>
<score>9.304</score>
<pdfWordCount>8102</pdfWordCount>
<pdfCharCount>51995</pdfCharCount>
<pdfVersion>1.3</pdfVersion>
<pdfPageCount>21</pdfPageCount>
<pdfPageSize>504 x 720 pts</pdfPageSize>
<refBibsNative>true</refBibsNative>
<abstractWordCount>192</abstractWordCount>
<abstractCharCount>1461</abstractCharCount>
<keywordCount>8</keywordCount>
</qualityIndicators>
<title>Miniaturization and its effects on cranial morphology in plethodontid salamanders, genus Thorius (Amphibia: Plethodontidae). I. Osteological variation</title>
<genre>
<json:string>article</json:string>
</genre>
<host>
<title>Biological Journal of the Linnean Society</title>
<language>
<json:string>unknown</json:string>
</language>
<doi>
<json:string>10.1111/(ISSN)1095-8312</json:string>
</doi>
<issn>
<json:string>0024-4066</json:string>
</issn>
<eissn>
<json:string>1095-8312</json:string>
</eissn>
<publisherId>
<json:string>BIJ</json:string>
</publisherId>
<volume>23</volume>
<issue>1</issue>
<pages>
<first>55</first>
<last>75</last>
<total>21</total>
</pages>
<genre>
<json:string>journal</json:string>
</genre>
</host>
<namedEntities>
<unitex>
<date>
<json:string>1984</json:string>
</date>
<geogName></geogName>
<orgName>
<json:string>Department of Zoology, University of California, Berkeley</json:string>
<json:string>University of Colorado</json:string>
<json:string>Department of Anatomy, University of Chicago</json:string>
<json:string>Department of Zoology, Museum of Vertebrate Zoology, Center for Latin American Studies, and Sigma Xi, University of California, Berkeley</json:string>
<json:string>and Department of Biology, Dalhousie University</json:string>
</orgName>
<orgName_funder></orgName_funder>
<orgName_provider></orgName_provider>
<persName>
<json:string>D. B. Wake</json:string>
<json:string>W. E. Bemis</json:string>
<json:string>R. J. Wassersug</json:string>
<json:string>B. K. Hall</json:string>
<json:string>Radinsky</json:string>
<json:string>R. E. Lombard</json:string>
</persName>
<placeName>
<json:string>Mexico</json:string>
<json:string>Grunwald</json:string>
</placeName>
<ref_url></ref_url>
<ref_bibl>
<json:string>Hanken, 1980, 1983a</json:string>
<json:string>Hanken (198213)</json:string>
<json:string>Tyler et al., 1981</json:string>
<json:string>Gould, 1975</json:string>
<json:string>Britton & Stanton, 1973</json:string>
<json:string>Alberch, 1981</json:string>
<json:string>Wake & Hanken, 1982</json:string>
<json:string>Carroll & Holmes, 1980</json:string>
<json:string>Snyder & Bretsky, 1971</json:string>
<json:string>Alberch (1983)</json:string>
<json:string>Hanken, 198213</json:string>
<json:string>Rensch (1948)</json:string>
<json:string>Wake & Elias, 1983</json:string>
<json:string>Hallam, 1975</json:string>
<json:string>Gould (1977)</json:string>
<json:string>Bonebrake & Brandon, 1971</json:string>
<json:string>Fink, 1981</json:string>
<json:string>Swedmark, 1968</json:string>
<json:string>Lynch & Ruiz-Carranza, 1982</json:string>
<json:string>Schmidt-Nielsen, 1975</json:string>
<json:string>Hanken, 1982b</json:string>
<json:string>Marlow et al., 1979</json:string>
<json:string>Wilder, 1925</json:string>
<json:string>Wake, 1966</json:string>
<json:string>Dingerkus & Uhler, 1977</json:string>
<json:string>Maglio, 1973</json:string>
<json:string>Hanken (1982a, b)</json:string>
<json:string>Pilbeam & Gould, 1974</json:string>
<json:string>Prothero & Sereno, 1982</json:string>
<json:string>Balon, 1980</json:string>
<json:string>Tanner, 1952</json:string>
<json:string>Hanken, 1983b</json:string>
<json:string>see reviews by Bonner, 1968</json:string>
<json:string>Wake et al., 1983</json:string>
<json:string>sensu Gould, 1977</json:string>
<json:string>Gould, 1966</json:string>
<json:string>Cans, 1974</json:string>
<json:string>1869, 1889</json:string>
<json:string>Rabb, 1960</json:string>
<json:string>Alberch, 1983</json:string>
<json:string>Lynch & Wake, 1975, 1978</json:string>
<json:string>Alberch & Alberch, 1981</json:string>
<json:string>Hanken, 1982a, 1983a</json:string>
<json:string>Carroll, 1969</json:string>
<json:string>Wake & Lynch, 1976</json:string>
<json:string>see discussion of this problem and presentation of quantitative data for anurans in Trueb, 1977</json:string>
<json:string>Griffiths, 1959</json:string>
<json:string>Sprinkle & Bell, 1978</json:string>
<json:string>Grandison, 1981</json:string>
<json:string>Marshall & Corruccini, 1978</json:string>
<json:string>Wake ( 1966)</json:string>
<json:string>discussed in Hanken, 1983a</json:string>
<json:string>Roberts, 1981</json:string>
<json:string>Wassersug, 1976</json:string>
<json:string>Hanken, 198313</json:string>
<json:string>Rensch, 1959</json:string>
<json:string>proportioned dwarfism-could, 1977</json:string>
</ref_bibl>
<bibl></bibl>
</unitex>
</namedEntities>
<ark>
<json:string>ark:/67375/WNG-Z45PM323-1</json:string>
</ark>
<categories>
<wos>
<json:string>1 - science</json:string>
<json:string>2 - evolutionary biology</json:string>
</wos>
<scienceMetrix>
<json:string>1 - natural sciences</json:string>
<json:string>2 - biology</json:string>
<json:string>3 - evolutionary biology</json:string>
</scienceMetrix>
<scopus>
<json:string>1 - Life Sciences</json:string>
<json:string>2 - Agricultural and Biological Sciences</json:string>
<json:string>3 - Ecology, Evolution, Behavior and Systematics</json:string>
</scopus>
<inist>
<json:string>1 - sciences appliquees, technologies et medecines</json:string>
<json:string>2 - sciences biologiques et medicales</json:string>
<json:string>3 - sciences biologiques fondamentales et appliquees. psychologie</json:string>
<json:string>4 - ethologie animale</json:string>
</inist>
</categories>
<publicationDate>1984</publicationDate>
<copyrightDate>1984</copyrightDate>
<doi>
<json:string>10.1111/j.1095-8312.1984.tb00806.x</json:string>
</doi>
<id>2AA87502023A80ED44EA7561CEB044C2A37A12A2</id>
<score>1</score>
<fulltext>
<json:item>
<extension>pdf</extension>
<original>true</original>
<mimetype>application/pdf</mimetype>
<uri>https://api.istex.fr/document/2AA87502023A80ED44EA7561CEB044C2A37A12A2/fulltext/pdf</uri>
</json:item>
<json:item>
<extension>zip</extension>
<original>false</original>
<mimetype>application/zip</mimetype>
<uri>https://api.istex.fr/document/2AA87502023A80ED44EA7561CEB044C2A37A12A2/fulltext/zip</uri>
</json:item>
<istex:fulltextTEI uri="https://api.istex.fr/document/2AA87502023A80ED44EA7561CEB044C2A37A12A2/fulltext/tei">
<teiHeader>
<fileDesc>
<titleStmt>
<title level="a" type="main">Miniaturization and its effects on cranial morphology in plethodontid salamanders, genus
<hi rend="italic">Thorius</hi>
(Amphibia: Plethodontidae). I. Osteological variation</title>
</titleStmt>
<publicationStmt>
<authority>ISTEX</authority>
<publisher>Blackwell Publishing Ltd</publisher>
<pubPlace>Oxford, UK</pubPlace>
<date type="published" when="1984-09"></date>
</publicationStmt>
<notesStmt>
<note type="content-type" subtype="article" source="article" scheme="https://content-type.data.istex.fr/ark:/67375/XTP-6N5SZHKN-D">article</note>
<note type="publication-type" subtype="journal" scheme="https://publication-type.data.istex.fr/ark:/67375/JMC-0GLKJH51-B">journal</note>
</notesStmt>
<sourceDesc>
<biblStruct type="article">
<analytic>
<title level="a" type="main">Miniaturization and its effects on cranial morphology in plethodontid salamanders, genus
<hi rend="italic">Thorius</hi>
(Amphibia: Plethodontidae). I. Osteological variation</title>
<author xml:id="author-0000">
<persName>
<forename type="first">J.</forename>
<surname>HANKEN</surname>
</persName>
<affiliation>Museum of Vertebrate Zoology, 2593 Life Sciences Building, University of California, Berkeley, California 94720, U.S.A.
<address>
<country key="US"></country>
</address>
</affiliation>
<note type="foot">*Department of Environmental, Population and Organismic Biology, University of Colorado, Boulder, Campus Box B‐334, Boulder, Colorado 80309, U.S.A.</note>
</author>
<idno type="istex">2AA87502023A80ED44EA7561CEB044C2A37A12A2</idno>
<idno type="ark">ark:/67375/WNG-Z45PM323-1</idno>
<idno type="DOI">10.1111/j.1095-8312.1984.tb00806.x</idno>
<idno type="unit">BIJ55</idno>
<idno type="toTypesetVersion">file:BIJ.BIJ55.pdf</idno>
</analytic>
<monogr>
<title level="j" type="main">Biological Journal of the Linnean Society</title>
<title level="j" type="alt">BIOLOGICAL JOURNAL LINNEAN SOCIETY</title>
<idno type="pISSN">0024-4066</idno>
<idno type="eISSN">1095-8312</idno>
<idno type="book-DOI">10.1111/(ISSN)1095-8312</idno>
<idno type="book-part-DOI">10.1111/bij.1984.23.issue-1</idno>
<idno type="product">BIJ</idno>
<idno type="publisherDivision">ST</idno>
<imprint>
<biblScope unit="vol">23</biblScope>
<biblScope unit="issue">1</biblScope>
<biblScope unit="page" from="55">55</biblScope>
<biblScope unit="page" to="75">75</biblScope>
<biblScope unit="page-count">21</biblScope>
<publisher>Blackwell Publishing Ltd</publisher>
<pubPlace>Oxford, UK</pubPlace>
<date type="published" when="1984-09"></date>
</imprint>
</monogr>
</biblStruct>
</sourceDesc>
</fileDesc>
<profileDesc>
<abstract xml:lang="en" style="main">
<p>Cranial skeletal morphology, ontogeny and variation are examined in five species of
<hi rend="italic">Thorius</hi>
, a genus of diminutive plethodontid salamanders that are among the smallest, extant, tailed tetrapods. The skull of adull
<hi rend="italic">Thorius</hi>
is characterized by: (1) limited development or absence of several ossified elements and dentition; (2) increased inter‐and intraspecific variability; (3) novel morphological configurations of the braincase and jaw suspensorium. Posthatching cranial mineralization in all species of
<hi rend="italic">Thorius</hi>
is truncated precociously with respect to that typical of larger and more generalized plethodontid genera, such as
<hi rend="italic">Pseudoeurycea.</hi>
These features implicate paedomorphosis as a predominant mechanism responsible for the evolution of decreased size in
<hi rend="italic">Thorius</hi>
from larger plethodontid ancestors. Interspecific differences in cranial morphology are evident; species may be characterized by greater or lesser degrees of truncated development. However, there is no consistent relationship between degree of paedomorphosis and mean adult body size in interspecific comparisons. Adult morphology of several individual elements represent potentially useful taxonomic characters for distinguishing species.</p>
<p>Reduction, increased variability, and morphological novelty are common to many lineages of dwarfed taxa. They represent a null hypothesis for examination of the developmental mechanisms and morphological consequences of miniaturization in other groups.</p>
</abstract>
<textClass>
<keywords xml:lang="en">
<term xml:id="k1">Amphibia</term>
<term xml:id="k2">Caudata</term>
<term xml:id="k3">Plethodontidae</term>
<term xml:id="k4">
<hi rend="italic">Thorius</hi>
</term>
<term xml:id="k5">skulls</term>
<term xml:id="k6">morphological variation</term>
<term xml:id="k7">paedomorphosis</term>
<term xml:id="k8">dwarfism</term>
</keywords>
<keywords rend="tocHeading1">
<term>Original Article</term>
</keywords>
</textClass>
<langUsage>
<language ident="en"></language>
</langUsage>
</profileDesc>
</teiHeader>
</istex:fulltextTEI>
<json:item>
<extension>txt</extension>
<original>false</original>
<mimetype>text/plain</mimetype>
<uri>https://api.istex.fr/document/2AA87502023A80ED44EA7561CEB044C2A37A12A2/fulltext/txt</uri>
</json:item>
</fulltext>
<metadata>
<istex:metadataXml wicri:clean="Wiley, elements deleted: body">
<istex:xmlDeclaration>version="1.0" encoding="UTF-8" standalone="yes"</istex:xmlDeclaration>
<istex:document>
<component version="2.0" type="serialArticle" xml:lang="en">
<header>
<publicationMeta level="product">
<publisherInfo>
<publisherName>Blackwell Publishing Ltd</publisherName>
<publisherLoc>Oxford, UK</publisherLoc>
</publisherInfo>
<doi origin="wiley" registered="yes">10.1111/(ISSN)1095-8312</doi>
<issn type="print">0024-4066</issn>
<issn type="electronic">1095-8312</issn>
<idGroup>
<id type="product" value="BIJ"></id>
<id type="publisherDivision" value="ST"></id>
</idGroup>
<titleGroup>
<title type="main" sort="BIOLOGICAL JOURNAL LINNEAN SOCIETY">Biological Journal of the Linnean Society</title>
</titleGroup>
</publicationMeta>
<publicationMeta level="part" position="09101">
<doi origin="wiley">10.1111/bij.1984.23.issue-1</doi>
<numberingGroup>
<numbering type="journalVolume" number="23">23</numbering>
<numbering type="journalIssue" number="1">1</numbering>
</numberingGroup>
<coverDate startDate="1984-09">September 1984</coverDate>
</publicationMeta>
<publicationMeta level="unit" type="article" position="0005500" status="forIssue">
<doi origin="wiley">10.1111/j.1095-8312.1984.tb00806.x</doi>
<idGroup>
<id type="unit" value="BIJ55"></id>
</idGroup>
<countGroup>
<count type="pageTotal" number="21"></count>
</countGroup>
<titleGroup>
<title type="tocHeading1">Original Article</title>
</titleGroup>
<eventGroup>
<event type="firstOnline" date="2008-01-14"></event>
<event type="publishedOnlineFinalForm" date="2008-01-14"></event>
<event type="xmlConverted" agent="Converter:BPG_TO_WML3G version:2.5.2 mode:FullText" date="2011-07-06"></event>
<event type="xmlConverted" agent="Converter:WILEY_ML3G_TO_WILEY_ML3GV2 version:3.8.8" date="2014-02-22"></event>
<event type="xmlConverted" agent="Converter:WML3G_To_WML3G version:4.1.7 mode:FullText,remove_FC" date="2014-10-15"></event>
</eventGroup>
<numberingGroup>
<numbering type="pageFirst" number="55">55</numbering>
<numbering type="pageLast" number="75">75</numbering>
</numberingGroup>
<linkGroup>
<link type="toTypesetVersion" href="file:BIJ.BIJ55.pdf"></link>
</linkGroup>
</publicationMeta>
<contentMeta>
<unparsedEditorialHistory>Accepted for publication 8 June 1983</unparsedEditorialHistory>
<countGroup>
<count type="referenceTotal" number="60"></count>
<count type="linksCrossRef" number="2"></count>
</countGroup>
<titleGroup>
<title type="main">Miniaturization and its effects on cranial morphology in plethodontid salamanders, genus
<i>Thorius</i>
(Amphibia: Plethodontidae). I. Osteological variation</title>
</titleGroup>
<creators>
<creator creatorRole="author" xml:id="cr1" affiliationRef="#a1" noteRef="#fn1">
<personName>
<givenNames>J.</givenNames>
<familyName>HANKEN</familyName>
</personName>
</creator>
</creators>
<affiliationGroup>
<affiliation xml:id="a1" countryCode="US">
<unparsedAffiliation>Museum of Vertebrate Zoology, 2593 Life Sciences Building, University of California, Berkeley, California 94720, U.S.A.</unparsedAffiliation>
</affiliation>
</affiliationGroup>
<keywordGroup xml:lang="en">
<keyword xml:id="k1">Amphibia</keyword>
<keyword xml:id="k2">Caudata</keyword>
<keyword xml:id="k3">Plethodontidae</keyword>
<keyword xml:id="k4">
<i>Thorius</i>
</keyword>
<keyword xml:id="k5">skulls</keyword>
<keyword xml:id="k6">morphological variation</keyword>
<keyword xml:id="k7">paedomorphosis</keyword>
<keyword xml:id="k8">dwarfism</keyword>
</keywordGroup>
<abstractGroup>
<abstract type="main" xml:lang="en">
<p>Cranial skeletal morphology, ontogeny and variation are examined in five species of
<i>Thorius</i>
, a genus of diminutive plethodontid salamanders that are among the smallest, extant, tailed tetrapods. The skull of adull
<i>Thorius</i>
is characterized by: (1) limited development or absence of several ossified elements and dentition; (2) increased inter‐and intraspecific variability; (3) novel morphological configurations of the braincase and jaw suspensorium. Posthatching cranial mineralization in all species of
<i>Thorius</i>
is truncated precociously with respect to that typical of larger and more generalized plethodontid genera, such as
<i>Pseudoeurycea.</i>
These features implicate paedomorphosis as a predominant mechanism responsible for the evolution of decreased size in
<i>Thorius</i>
from larger plethodontid ancestors. Interspecific differences in cranial morphology are evident; species may be characterized by greater or lesser degrees of truncated development. However, there is no consistent relationship between degree of paedomorphosis and mean adult body size in interspecific comparisons. Adult morphology of several individual elements represent potentially useful taxonomic characters for distinguishing species.</p>
<p>Reduction, increased variability, and morphological novelty are common to many lineages of dwarfed taxa. They represent a null hypothesis for examination of the developmental mechanisms and morphological consequences of miniaturization in other groups.</p>
</abstract>
</abstractGroup>
</contentMeta>
<noteGroup>
<note xml:id="fn1">
<p>*Department of Environmental, Population and Organismic Biology, University of Colorado, Boulder, Campus Box B‐334, Boulder, Colorado 80309, U.S.A.</p>
</note>
</noteGroup>
</header>
</component>
</istex:document>
</istex:metadataXml>
<mods version="3.6">
<titleInfo lang="en">
<title>Miniaturization and its effects on cranial morphology in plethodontid salamanders, genus Thorius (Amphibia: Plethodontidae). I. Osteological variation</title>
</titleInfo>
<titleInfo type="alternative" contentType="CDATA" lang="en">
<title>Miniaturization and its effects on cranial morphology in plethodontid salamanders, genus Thorius (Amphibia: Plethodontidae). I. Osteological variation</title>
</titleInfo>
<name type="personal">
<namePart type="given">J.</namePart>
<namePart type="family">HANKEN</namePart>
<affiliation>Museum of Vertebrate Zoology, 2593 Life Sciences Building, University of California, Berkeley, California 94720, U.S.A.</affiliation>
<description>*Department of Environmental, Population and Organismic Biology, University of Colorado, Boulder, Campus Box B‐334, Boulder, Colorado 80309, U.S.A.</description>
<role>
<roleTerm type="text">author</roleTerm>
</role>
</name>
<typeOfResource>text</typeOfResource>
<genre type="article" displayLabel="article" authority="ISTEX" authorityURI="https://content-type.data.istex.fr" valueURI="https://content-type.data.istex.fr/ark:/67375/XTP-6N5SZHKN-D">article</genre>
<originInfo>
<publisher>Blackwell Publishing Ltd</publisher>
<place>
<placeTerm type="text">Oxford, UK</placeTerm>
</place>
<dateIssued encoding="w3cdtf">1984-09</dateIssued>
<edition>Accepted for publication 8 June 1983</edition>
<copyrightDate encoding="w3cdtf">1984</copyrightDate>
</originInfo>
<language>
<languageTerm type="code" authority="rfc3066">en</languageTerm>
<languageTerm type="code" authority="iso639-2b">eng</languageTerm>
</language>
<physicalDescription>
<extent unit="references">60</extent>
<extent unit="linksCrossRef">2</extent>
</physicalDescription>
<abstract lang="en">Cranial skeletal morphology, ontogeny and variation are examined in five species of Thorius, a genus of diminutive plethodontid salamanders that are among the smallest, extant, tailed tetrapods. The skull of adull Thorius is characterized by: (1) limited development or absence of several ossified elements and dentition; (2) increased inter‐and intraspecific variability; (3) novel morphological configurations of the braincase and jaw suspensorium. Posthatching cranial mineralization in all species of Thorius is truncated precociously with respect to that typical of larger and more generalized plethodontid genera, such as Pseudoeurycea. These features implicate paedomorphosis as a predominant mechanism responsible for the evolution of decreased size in Thorius from larger plethodontid ancestors. Interspecific differences in cranial morphology are evident; species may be characterized by greater or lesser degrees of truncated development. However, there is no consistent relationship between degree of paedomorphosis and mean adult body size in interspecific comparisons. Adult morphology of several individual elements represent potentially useful taxonomic characters for distinguishing species. Reduction, increased variability, and morphological novelty are common to many lineages of dwarfed taxa. They represent a null hypothesis for examination of the developmental mechanisms and morphological consequences of miniaturization in other groups.</abstract>
<subject lang="en">
<genre>keywords</genre>
<topic>Amphibia</topic>
<topic>Caudata</topic>
<topic>Plethodontidae</topic>
<topic>Thorius</topic>
<topic>skulls</topic>
<topic>morphological variation</topic>
<topic>paedomorphosis</topic>
<topic>dwarfism</topic>
</subject>
<relatedItem type="host">
<titleInfo>
<title>Biological Journal of the Linnean Society</title>
</titleInfo>
<genre type="journal" authority="ISTEX" authorityURI="https://publication-type.data.istex.fr" valueURI="https://publication-type.data.istex.fr/ark:/67375/JMC-0GLKJH51-B">journal</genre>
<identifier type="ISSN">0024-4066</identifier>
<identifier type="eISSN">1095-8312</identifier>
<identifier type="DOI">10.1111/(ISSN)1095-8312</identifier>
<identifier type="PublisherID">BIJ</identifier>
<part>
<date>1984</date>
<detail type="volume">
<caption>vol.</caption>
<number>23</number>
</detail>
<detail type="issue">
<caption>no.</caption>
<number>1</number>
</detail>
<extent unit="pages">
<start>55</start>
<end>75</end>
<total>21</total>
</extent>
</part>
</relatedItem>
<identifier type="istex">2AA87502023A80ED44EA7561CEB044C2A37A12A2</identifier>
<identifier type="ark">ark:/67375/WNG-Z45PM323-1</identifier>
<identifier type="DOI">10.1111/j.1095-8312.1984.tb00806.x</identifier>
<identifier type="ArticleID">BIJ55</identifier>
<recordInfo>
<recordContentSource authority="ISTEX" authorityURI="https://loaded-corpus.data.istex.fr" valueURI="https://loaded-corpus.data.istex.fr/ark:/67375/XBH-L0C46X92-X">wiley</recordContentSource>
<recordOrigin>Blackwell Publishing Ltd</recordOrigin>
</recordInfo>
</mods>
<json:item>
<extension>json</extension>
<original>false</original>
<mimetype>application/json</mimetype>
<uri>https://api.istex.fr/document/2AA87502023A80ED44EA7561CEB044C2A37A12A2/metadata/json</uri>
</json:item>
</metadata>
<serie></serie>
</istex>
</record>

Pour manipuler ce document sous Unix (Dilib)

EXPLOR_STEP=$WICRI_ROOT/Wicri/Santé/explor/EdenteV2/Data/Istex/Corpus
HfdSelect -h $EXPLOR_STEP/biblio.hfd -nk 001472 | SxmlIndent | more

Ou

HfdSelect -h $EXPLOR_AREA/Data/Istex/Corpus/biblio.hfd -nk 001472 | SxmlIndent | more

Pour mettre un lien sur cette page dans le réseau Wicri

{{Explor lien
   |wiki=    Wicri/Santé
   |area=    EdenteV2
   |flux=    Istex
   |étape=   Corpus
   |type=    RBID
   |clé=     ISTEX:2AA87502023A80ED44EA7561CEB044C2A37A12A2
   |texte=   Miniaturization and its effects on cranial morphology in plethodontid salamanders, genus Thorius (Amphibia: Plethodontidae). I. Osteological variation
}}

Wicri

This area was generated with Dilib version V0.6.32.
Data generation: Thu Nov 30 15:26:48 2017. Site generation: Tue Mar 8 16:36:20 2022