Spatial attachment-site preferences of macroectoparasites on Atlantic sturgeons Acipenser oxyrinchus in Minas Basin, Bay of Fundy, Canada.
Identifieur interne : 000583 ( Main/Merge ); précédent : 000582; suivant : 000584Spatial attachment-site preferences of macroectoparasites on Atlantic sturgeons Acipenser oxyrinchus in Minas Basin, Bay of Fundy, Canada.
Auteurs : Samantha E M. Munroe [Canada] ; Trevor S. Avery ; Dave Shutler ; Michael J. DadswellSource :
- The Journal of parasitology [ 1937-2345 ] ; 2011.
English descriptors
- KwdEn :
- MESH :
- geographic : Nova Scotia.
- parasitology : Animal Fins, Ectoparasitic Infestations, Fish Diseases, Gills.
- physiology : Copepoda, Leeches.
- veterinary : Ectoparasitic Infestations.
- Animals, Female, Fishes, Male, Poisson Distribution, Salinity, Seawater.
Abstract
Although parasite habitat preference is well studied, it is rarely rigorously evaluated statistically because of many zero intensities. Attachment-site preference and intensities of 2 macroectoparasite species ( Caligus elongatus and Calliobdella vivida ) of Atlantic sturgeon, Acipenser oxyrinchus Mitchill, in Minas Basin, Bay of Fundy, Canada, were characterized with the use of zero-inflated negative binomial statistical models that included a fork-length offset to control for body size. Three other parasites were encountered, sometimes in high numbers on various body sites, but too few counts overall prevented construction of meaningful statistical models. Of 26 sturgeons, prevalence of (1) C. elongatus (Copepoda) was 85%, mainly on caudal fins and nonfin body sites; (2) C. vivida (Hirudinea) was 81%, mainly on the pelvic and pectoral fins, and dorsal and ventral-lateral body sites; (3) Dichelesthium oblongum (Copepoda) was 31% within the gills or burrowed into the musculature at the base of fins; (4) Argulus stizostethii (Crustacea: Branchiura) was 8%; and (5) Nitzschia sturionis (Monogenea) was 12%. Only D. oblongum was associated with visible damage, mainly as lesions on gills and soft tissues. Characterizing parasite prevalences within the Bay of Fundy is important because some parasites affect fish health and population biology.
DOI: 10.1645/GE-2592.1
PubMed: 21506763
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<author><name sortKey="Munroe, Samantha E M" sort="Munroe, Samantha E M" uniqKey="Munroe S" first="Samantha E M" last="Munroe">Samantha E M. Munroe</name>
<affiliation wicri:level="1"><nlm:affiliation>Department of Biology, Acadia University, 33 Westwood Avenue, Wolfville, Nova Scotia B4P 2R6, Canada.</nlm:affiliation>
<country xml:lang="fr">Canada</country>
<wicri:regionArea>Department of Biology, Acadia University, 33 Westwood Avenue, Wolfville, Nova Scotia B4P 2R6</wicri:regionArea>
<wicri:noRegion>Nova Scotia B4P 2R6</wicri:noRegion>
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<author><name sortKey="Avery, Trevor S" sort="Avery, Trevor S" uniqKey="Avery T" first="Trevor S" last="Avery">Trevor S. Avery</name>
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<author><name sortKey="Shutler, Dave" sort="Shutler, Dave" uniqKey="Shutler D" first="Dave" last="Shutler">Dave Shutler</name>
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<term>Ectoparasitic Infestations (parasitology)</term>
<term>Ectoparasitic Infestations (veterinary)</term>
<term>Female</term>
<term>Fish Diseases (parasitology)</term>
<term>Fishes</term>
<term>Gills (parasitology)</term>
<term>Leeches (physiology)</term>
<term>Male</term>
<term>Nova Scotia</term>
<term>Poisson Distribution</term>
<term>Salinity</term>
<term>Seawater</term>
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<term>Fish Diseases</term>
<term>Gills</term>
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<term>Leeches</term>
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<front><div type="abstract" xml:lang="en">Although parasite habitat preference is well studied, it is rarely rigorously evaluated statistically because of many zero intensities. Attachment-site preference and intensities of 2 macroectoparasite species ( Caligus elongatus and Calliobdella vivida ) of Atlantic sturgeon, Acipenser oxyrinchus Mitchill, in Minas Basin, Bay of Fundy, Canada, were characterized with the use of zero-inflated negative binomial statistical models that included a fork-length offset to control for body size. Three other parasites were encountered, sometimes in high numbers on various body sites, but too few counts overall prevented construction of meaningful statistical models. Of 26 sturgeons, prevalence of (1) C. elongatus (Copepoda) was 85%, mainly on caudal fins and nonfin body sites; (2) C. vivida (Hirudinea) was 81%, mainly on the pelvic and pectoral fins, and dorsal and ventral-lateral body sites; (3) Dichelesthium oblongum (Copepoda) was 31% within the gills or burrowed into the musculature at the base of fins; (4) Argulus stizostethii (Crustacea: Branchiura) was 8%; and (5) Nitzschia sturionis (Monogenea) was 12%. Only D. oblongum was associated with visible damage, mainly as lesions on gills and soft tissues. Characterizing parasite prevalences within the Bay of Fundy is important because some parasites affect fish health and population biology.</div>
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