A single sea lamprey attack causes acute anemia and mortality in lake sturgeon.
Identifieur interne : 000439 ( Ncbi/Checkpoint ); précédent : 000438; suivant : 000440A single sea lamprey attack causes acute anemia and mortality in lake sturgeon.
Auteurs : Maria S. Sepúlveda [États-Unis] ; Holly K. Patrick ; Trent M. SuttonSource :
- Journal of aquatic animal health [ 0899-7659 ] ; 2012.
English descriptors
- KwdEn :
- MESH :
- etiology : Anemia, Fish Diseases.
- mortality : Fish Diseases.
- physiology : Fishes, Predatory Behavior.
- veterinary : Anemia.
- Animals, Body Size.
Abstract
The effects of sea lamprey Petromyzon marinus parasitism on hematological variables have not been quantified for lake sturgeon Acipenser fulvescens. Our study objectives were to (1) assess changes in lake sturgeon hematology immediately after a single sea lamprey attack and after a 2-week recovery period and (2) assess changes in the histological condition of major hematopoietic organs. Lake sturgeon from four size-groups (470-570, 570-650, 650-760, and 950-1,500 mm fork length) were individually subjected to a sea lamprey attack in a series of 55 experimental trials. Survival of lake sturgeon after a single sea lamprey attack was size dependent, with fish in smaller size-groups exhibiting higher direct and indirect mortality than individuals in larger size-classes. The most sensitive blood chemistry variable was hematocrit: each 1% decline in hematocrit resulted in a 5.1% increase in mortality risk. Other important variables were plasma protein level, with a 10-g/dL decline resulting in a 4.2% increase in mortality risk; and hemoglobin, with a 1-g/dL decline resulting in a 2.9% increase in mortality risk. Most of the surviving lake sturgeon were unable to restore hemoglobin, hematocrit, and plasma protein to pre-attack levels by the end of the 2-week recovery period. We developed an index of histological spleen condition, which indicated that short-duration (< 5-d) sea lamprey attachments depleted red blood cell reserves faster than longer-duration attacks. Our study results indicate that sea lamprey parasitism has the potential to induce acute anemia in lake sturgeon and that nonlethal attacks on smaller (< 760-mm) fish can have serious physiological implications.
PubMed: 22838079
Affiliations:
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Patrick</name></author><author><name sortKey="Sutton, Trent M" sort="Sutton, Trent M" uniqKey="Sutton T" first="Trent M" last="Sutton">Trent M. 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Sepúlveda</name><affiliation wicri:level="1"><nlm:affiliation>Department of Forestry and Natural Resources, Purdue University, 195 Marsteller Street, West Lafayette, Indiana 47907, USA.</nlm:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Department of Forestry and Natural Resources, Purdue University, 195 Marsteller Street, West Lafayette, Indiana 47907</wicri:regionArea><wicri:noRegion>Indiana 47907</wicri:noRegion></affiliation></author><author><name sortKey="Patrick, Holly K" sort="Patrick, Holly K" uniqKey="Patrick H" first="Holly K" last="Patrick">Holly K. Patrick</name></author><author><name sortKey="Sutton, Trent M" sort="Sutton, Trent M" uniqKey="Sutton T" first="Trent M" last="Sutton">Trent M. Sutton</name></author></analytic><series><title level="j">Journal of aquatic animal health</title><idno type="ISSN">0899-7659</idno><imprint><date when="2012" type="published">2012</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Anemia (etiology)</term><term>Anemia (veterinary)</term><term>Animals</term><term>Body Size</term><term>Fish Diseases (etiology)</term><term>Fish Diseases (mortality)</term><term>Fishes (physiology)</term><term>Predatory Behavior (physiology)</term></keywords><keywords scheme="MESH" qualifier="etiology" xml:lang="en"><term>Anemia</term><term>Fish Diseases</term></keywords><keywords scheme="MESH" qualifier="mortality" xml:lang="en"><term>Fish Diseases</term></keywords><keywords scheme="MESH" qualifier="physiology" xml:lang="en"><term>Fishes</term><term>Predatory Behavior</term></keywords><keywords scheme="MESH" qualifier="veterinary" xml:lang="en"><term>Anemia</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Animals</term><term>Body Size</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The effects of sea lamprey Petromyzon marinus parasitism on hematological variables have not been quantified for lake sturgeon Acipenser fulvescens. Our study objectives were to (1) assess changes in lake sturgeon hematology immediately after a single sea lamprey attack and after a 2-week recovery period and (2) assess changes in the histological condition of major hematopoietic organs. Lake sturgeon from four size-groups (470-570, 570-650, 650-760, and 950-1,500 mm fork length) were individually subjected to a sea lamprey attack in a series of 55 experimental trials. Survival of lake sturgeon after a single sea lamprey attack was size dependent, with fish in smaller size-groups exhibiting higher direct and indirect mortality than individuals in larger size-classes. The most sensitive blood chemistry variable was hematocrit: each 1% decline in hematocrit resulted in a 5.1% increase in mortality risk. Other important variables were plasma protein level, with a 10-g/dL decline resulting in a 4.2% increase in mortality risk; and hemoglobin, with a 1-g/dL decline resulting in a 2.9% increase in mortality risk. Most of the surviving lake sturgeon were unable to restore hemoglobin, hematocrit, and plasma protein to pre-attack levels by the end of the 2-week recovery period. We developed an index of histological spleen condition, which indicated that short-duration (< 5-d) sea lamprey attachments depleted red blood cell reserves faster than longer-duration attacks. Our study results indicate that sea lamprey parasitism has the potential to induce acute anemia in lake sturgeon and that nonlethal attacks on smaller (< 760-mm) fish can have serious physiological implications.</div></front></TEI><affiliations><list><country><li>États-Unis</li></country></list><tree><noCountry><name sortKey="Patrick, Holly K" sort="Patrick, Holly K" uniqKey="Patrick H" first="Holly K" last="Patrick">Holly K. Patrick</name><name sortKey="Sutton, Trent M" sort="Sutton, Trent M" uniqKey="Sutton T" first="Trent M" last="Sutton">Trent M. Sutton</name></noCountry><country name="États-Unis"><noRegion><name sortKey="Sepulveda, Maria S" sort="Sepulveda, Maria S" uniqKey="Sepulveda M" first="Maria S" last="Sepúlveda">Maria S. Sepúlveda</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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