Spawning periodicity, spawning migration, and size at maturity of green sturgeon, Acipenser medirostris, in the Rogue River, Oregon
Identifieur interne : 000C54 ( Main/Merge ); précédent : 000C53; suivant : 000C55Spawning periodicity, spawning migration, and size at maturity of green sturgeon, Acipenser medirostris, in the Rogue River, Oregon
Auteurs : Daniel L. Erickson [États-Unis] ; Molly A. H. Webb [États-Unis]Source :
- Environmental biology of fishes [ 0378-1909 ] ; 2007.
Descripteurs français
- Pascal (Inist)
- Wicri :
- topic : Migration.
English descriptors
- KwdEn :
Abstract
The Rogue River, Oregon represents one of three important spawning systems for green sturgeon, Acipenser medirostris, in North America. In this paper we describe the spawning migration, spawning periodicity, and size at maturity for green sturgeon caught in the Rogue River during 2000-2004. Green sturgeon were caught by gill net or angling; 103 individuals were tagged with radio or sonic transmitters (externally or internally). Green sturgeon caught by gill net and angling ranged from 145 cm to 225 cm total length. Histological and visual examinations of gonad tissues indicated that most green sturgeon were spawning or post-spawning adults that entered the Rogue River to spawn. Ripe individuals were caught when water temperature was 1018°C. Specimens carrying transmitters migrated 17-105 km up river; reaches consisting of likely spawning sites were identified based on sturgeon migratory behavior. Most green sturgeon remained in the Rogue River until late fall or early winter when flows increased, after which they returned to the ocean. Eight green sturgeon (males and females) returned to the Rogue River 2-4 years after leaving, entering the river during March, April, and May when water temperatures ranged from 9°C to 16°C. None of the 103-tagged individuals entered the Rogue River during successive years. There appear to be few known natural threats to adult green sturgeon in the Rogue River. However, our data suggest that a high percentage of adults that spawn in the Rogue River (particularly males) were susceptible to harvest by commercial, Tribal, and sport fisheries after leaving the system because they were not adequately protected by maximum size limits during the period of this study. The implications of maximum size limits (or lack of size limits) to green sturgeon are discussed, and recent actions taken by Oregon and Washington Fish and Wildlife Commissions to manage green sturgeon more conservatively are presented.
Links toward previous steps (curation, corpus...)
- to stream PascalFrancis, to step Corpus: 000181
- to stream PascalFrancis, to step Curation: 000195
- to stream PascalFrancis, to step Checkpoint: 000170
Links to Exploration step
Pascal:07-0412094Le document en format XML
<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en" level="a">Spawning periodicity, spawning migration, and size at maturity of green sturgeon, Acipenser medirostris, in the Rogue River, Oregon</title><author><name sortKey="Erickson, Daniel L" sort="Erickson, Daniel L" uniqKey="Erickson D" first="Daniel L." last="Erickson">Daniel L. Erickson</name><affiliation wicri:level="2"><inist:fA14 i1="01"><s1>Marine Program, Wildlife Conservation Society, 2300 Southern Boulevard, Bronx Zoo</s1><s2>Bronx, NY 10460</s2><s3>USA</s3><sZ>1 aut.</sZ></inist:fA14><country>États-Unis</country><placeName><region type="state">État de New York</region></placeName></affiliation></author><author><name sortKey="Webb, Molly A H" sort="Webb, Molly A H" uniqKey="Webb M" first="Molly A. H." last="Webb">Molly A. H. Webb</name><affiliation wicri:level="2"><inist:fA14 i1="02"><s1>Bozeman Fish Technology Center, US Fish and Wildlife Service, , 4050 Bridger Canyon Road</s1><s2>Bozeman, MT 59715</s2><s3>USA</s3><sZ>2 aut.</sZ></inist:fA14><country>États-Unis</country><placeName><region type="state">Montana</region></placeName></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">INIST</idno><idno type="inist">07-0412094</idno><date when="2007">2007</date><idno type="stanalyst">PASCAL 07-0412094 INIST</idno><idno type="RBID">Pascal:07-0412094</idno><idno type="wicri:Area/PascalFrancis/Corpus">000181</idno><idno type="wicri:Area/PascalFrancis/Curation">000195</idno><idno type="wicri:Area/PascalFrancis/Checkpoint">000170</idno><idno type="wicri:explorRef" wicri:stream="PascalFrancis" wicri:step="Checkpoint">000170</idno><idno type="wicri:doubleKey">0378-1909:2007:Erickson D:spawning:periodicity:spawning</idno><idno type="wicri:Area/Main/Merge">000C54</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">Spawning periodicity, spawning migration, and size at maturity of green sturgeon, Acipenser medirostris, in the Rogue River, Oregon</title><author><name sortKey="Erickson, Daniel L" sort="Erickson, Daniel L" uniqKey="Erickson D" first="Daniel L." last="Erickson">Daniel L. Erickson</name><affiliation wicri:level="2"><inist:fA14 i1="01"><s1>Marine Program, Wildlife Conservation Society, 2300 Southern Boulevard, Bronx Zoo</s1><s2>Bronx, NY 10460</s2><s3>USA</s3><sZ>1 aut.</sZ></inist:fA14><country>États-Unis</country><placeName><region type="state">État de New York</region></placeName></affiliation></author><author><name sortKey="Webb, Molly A H" sort="Webb, Molly A H" uniqKey="Webb M" first="Molly A. H." last="Webb">Molly A. H. Webb</name><affiliation wicri:level="2"><inist:fA14 i1="02"><s1>Bozeman Fish Technology Center, US Fish and Wildlife Service, , 4050 Bridger Canyon Road</s1><s2>Bozeman, MT 59715</s2><s3>USA</s3><sZ>2 aut.</sZ></inist:fA14><country>États-Unis</country><placeName><region type="state">Montana</region></placeName></affiliation></author></analytic><series><title level="j" type="main">Environmental biology of fishes</title><title level="j" type="abbreviated">Environ. biol. fishes</title><idno type="ISSN">0378-1909</idno><imprint><date when="2007">2007</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Environmental biology of fishes</title><title level="j" type="abbreviated">Environ. biol. fishes</title><idno type="ISSN">0378-1909</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Fidelity</term><term>Interval</term><term>Maturity</term><term>Migration</term><term>Oregon</term><term>Periodicity</term><term>Pisces</term><term>Range finding</term><term>Rogue River</term><term>Spawning</term><term>Temperature</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Frai</term><term>Périodicité</term><term>Migration</term><term>Maturité</term><term>Oregon</term><term>Télémétrie</term><term>Température</term><term>Intervalle</term><term>Fidélité</term><term>Pisces</term><term>Acipenser</term><term>Rivière Rogue</term></keywords><keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Migration</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The Rogue River, Oregon represents one of three important spawning systems for green sturgeon, Acipenser medirostris, in North America. In this paper we describe the spawning migration, spawning periodicity, and size at maturity for green sturgeon caught in the Rogue River during 2000-2004. Green sturgeon were caught by gill net or angling; 103 individuals were tagged with radio or sonic transmitters (externally or internally). Green sturgeon caught by gill net and angling ranged from 145 cm to 225 cm total length. Histological and visual examinations of gonad tissues indicated that most green sturgeon were spawning or post-spawning adults that entered the Rogue River to spawn. Ripe individuals were caught when water temperature was 1018°C. Specimens carrying transmitters migrated 17-105 km up river; reaches consisting of likely spawning sites were identified based on sturgeon migratory behavior. Most green sturgeon remained in the Rogue River until late fall or early winter when flows increased, after which they returned to the ocean. Eight green sturgeon (males and females) returned to the Rogue River 2-4 years after leaving, entering the river during March, April, and May when water temperatures ranged from 9°C to 16°C. None of the 103-tagged individuals entered the Rogue River during successive years. There appear to be few known natural threats to adult green sturgeon in the Rogue River. However, our data suggest that a high percentage of adults that spawn in the Rogue River (particularly males) were susceptible to harvest by commercial, Tribal, and sport fisheries after leaving the system because they were not adequately protected by maximum size limits during the period of this study. The implications of maximum size limits (or lack of size limits) to green sturgeon are discussed, and recent actions taken by Oregon and Washington Fish and Wildlife Commissions to manage green sturgeon more conservatively are presented.</div></front></TEI><affiliations><list><country><li>États-Unis</li></country><region><li>Montana</li><li>État de New York</li></region></list><tree><country name="États-Unis"><region name="État de New York"><name sortKey="Erickson, Daniel L" sort="Erickson, Daniel L" uniqKey="Erickson D" first="Daniel L." last="Erickson">Daniel L. Erickson</name></region><name sortKey="Webb, Molly A H" sort="Webb, Molly A H" uniqKey="Webb M" first="Molly A. H." last="Webb">Molly A. H. Webb</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
EXPLOR_STEP=$WICRI_ROOT/Wicri/Eau/explor/EsturgeonV1/Data/Main/Merge
HfdSelect -h $EXPLOR_STEP/biblio.hfd -nk 000C54 | SxmlIndent | more
Ou
HfdSelect -h $EXPLOR_AREA/Data/Main/Merge/biblio.hfd -nk 000C54 | SxmlIndent | more
Pour mettre un lien sur cette page dans le réseau Wicri
{{Explor lien
|wiki= Wicri/Eau
|area= EsturgeonV1
|flux= Main
|étape= Merge
|type= RBID
|clé= Pascal:07-0412094
|texte= Spawning periodicity, spawning migration, and size at maturity of green sturgeon, Acipenser medirostris, in the Rogue River, Oregon
}}
| This area was generated with Dilib version V0.6.27. |  |