Hematology patterns of migrating European eels and the role of EVEX virus

V. Van Ginneken; B. Ballieux; R. Willemze; K. Coldenhoff; E. Lentjes; E. Antonissen; O. Haenen; G. Van Den Thillart

doi:10.1016/j.cca.2005.01.011

Hematology patterns of migrating European eels and the role of EVEX virus

V. Van Ginneken
, B. Ballieux
, R. Willemze
, K. Coldenhoff
, E. Lentjes
, E. Antonissen
, O. Haenen
, G. Van Den Thillart

Research output: Contribution to journal › Article › Academic › peer-review

49 Citations (Scopus)

Abstract

We show that European eels infected with the rhabdovirus EVEX (Eel Virus European X) virus, developed hemorrhage and anemia during simulated migration in large swim tunnels, and died after 1000-1500 km. In contrast, virus-negative animals swam 5500 km, the estimated distance to the spawning ground of the European eel in the Sargasso Sea. Virus-positive eels showed a decline in hematocrit, which was related to the swim distance. Virus-negative eels showed a slightly increased hematocrit. Observed changes in plasma lactate dehydrogenase (LDH), total protein and aspartate aminotransferase (AAT) are indicative of a serious viral infection. Based on these observations, we conclude that eel virus infections may adversely affect the spawning migration of eels, and could be a contributing factor to the worldwide decline of eel.

Original language	English
Pages (from-to)	97-102
Number of pages	6
Journal	Comparative biochemistry and physiology. Toxicology & pharmacology
Volume	140
Issue number	1
DOIs	https://doi.org/10.1016/j.cca.2005.01.011
Publication status	Published - 1 Jan 2005

Keywords

Anguilla anguilla
Aspartate aminotransferase
Blood chemistry
European eel
EVEX
Lactate dehydrogenase
Simulated migration
Total protein
Virus

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10.1016/j.cca.2005.01.011

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title = "Hematology patterns of migrating European eels and the role of EVEX virus",

abstract = "We show that European eels infected with the rhabdovirus EVEX (Eel Virus European X) virus, developed hemorrhage and anemia during simulated migration in large swim tunnels, and died after 1000-1500 km. In contrast, virus-negative animals swam 5500 km, the estimated distance to the spawning ground of the European eel in the Sargasso Sea. Virus-positive eels showed a decline in hematocrit, which was related to the swim distance. Virus-negative eels showed a slightly increased hematocrit. Observed changes in plasma lactate dehydrogenase (LDH), total protein and aspartate aminotransferase (AAT) are indicative of a serious viral infection. Based on these observations, we conclude that eel virus infections may adversely affect the spawning migration of eels, and could be a contributing factor to the worldwide decline of eel.",

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AU - Van Ginneken, V.

AU - Ballieux, B.

AU - Willemze, R.

AU - Coldenhoff, K.

AU - Lentjes, E.

AU - Antonissen, E.

AU - Haenen, O.

AU - Van Den Thillart, G.

PY - 2005/1/1

Y1 - 2005/1/1

N2 - We show that European eels infected with the rhabdovirus EVEX (Eel Virus European X) virus, developed hemorrhage and anemia during simulated migration in large swim tunnels, and died after 1000-1500 km. In contrast, virus-negative animals swam 5500 km, the estimated distance to the spawning ground of the European eel in the Sargasso Sea. Virus-positive eels showed a decline in hematocrit, which was related to the swim distance. Virus-negative eels showed a slightly increased hematocrit. Observed changes in plasma lactate dehydrogenase (LDH), total protein and aspartate aminotransferase (AAT) are indicative of a serious viral infection. Based on these observations, we conclude that eel virus infections may adversely affect the spawning migration of eels, and could be a contributing factor to the worldwide decline of eel.

AB - We show that European eels infected with the rhabdovirus EVEX (Eel Virus European X) virus, developed hemorrhage and anemia during simulated migration in large swim tunnels, and died after 1000-1500 km. In contrast, virus-negative animals swam 5500 km, the estimated distance to the spawning ground of the European eel in the Sargasso Sea. Virus-positive eels showed a decline in hematocrit, which was related to the swim distance. Virus-negative eels showed a slightly increased hematocrit. Observed changes in plasma lactate dehydrogenase (LDH), total protein and aspartate aminotransferase (AAT) are indicative of a serious viral infection. Based on these observations, we conclude that eel virus infections may adversely affect the spawning migration of eels, and could be a contributing factor to the worldwide decline of eel.

KW - Anguilla anguilla

KW - Aspartate aminotransferase

KW - Blood chemistry

KW - European eel

KW - EVEX

KW - Lactate dehydrogenase

KW - Simulated migration

KW - Total protein

KW - Virus

UR - https://www.scopus.com/pages/publications/15744394872

U2 - 10.1016/j.cca.2005.01.011

DO - 10.1016/j.cca.2005.01.011

M3 - Article

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AN - SCOPUS:15744394872

SN - 1532-0456

VL - 140

SP - 97

EP - 102

JO - Comparative biochemistry and physiology. Toxicology & pharmacology

JF - Comparative biochemistry and physiology. Toxicology & pharmacology

IS - 1

ER -

Hematology patterns of migrating European eels and the role of EVEX virus

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Keywords

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