An Ichthyophonus ‐typefungus in the deep‐sea pelagic fish Scopelogadus beanii (Günther) (Pisces: Melamphaidae)pathology, geographic distribution and ecological implications
Parasitological examination of 400 specimens of the lower mesopelagic‐bathypelagic melamphaid fish Scopelogadus beanii (Günther) collected from throughout the species'geographic range in the Atlantic Ocean revealed cysts ranging in size from 1 to > 20 mm diameter in the livers of 50 indi...
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Wiley
1988
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Online Access: | http://dx.doi.org/10.1111/j.1095-8649.1988.tb05381.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1095-8649.1988.tb05381.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1095-8649.1988.tb05381.x |
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crwiley:10.1111/j.1095-8649.1988.tb05381.x 2023-12-03T10:27:05+01:00 An Ichthyophonus ‐typefungus in the deep‐sea pelagic fish Scopelogadus beanii (Günther) (Pisces: Melamphaidae)pathology, geographic distribution and ecological implications Gartner, J. V. Zwerner, D. E. 1988 http://dx.doi.org/10.1111/j.1095-8649.1988.tb05381.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1095-8649.1988.tb05381.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1095-8649.1988.tb05381.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Fish Biology volume 32, issue 3, page 459-470 ISSN 0022-1112 1095-8649 Aquatic Science Ecology, Evolution, Behavior and Systematics journal-article 1988 crwiley https://doi.org/10.1111/j.1095-8649.1988.tb05381.x 2023-11-09T14:35:45Z Parasitological examination of 400 specimens of the lower mesopelagic‐bathypelagic melamphaid fish Scopelogadus beanii (Günther) collected from throughout the species'geographic range in the Atlantic Ocean revealed cysts ranging in size from 1 to > 20 mm diameter in the livers of 50 individuals (12.5%). Histological preparations showed that the encysted material was an Ichthyophonus‐type fungus, which destroyed the liver tissue in infected individuals by progressive necrosis, the extent of which varied with cyst number and size. Infections were found primarily in individuals > 80 mm s.l . (size of sexual maturity in S. beanii ), with a significantly higher rate of infection among females. Liver weight was significantly reduced in infected fishes. Body wet weights tended to be lower in infected females. Fish from the western Atlantic showed a significantly greater prevalence of infection (17.0%) than those from either the eastern (1.1%) or South Atlantic (7.1 %). Within the western Atlantic, individuals collected from the slope waters of the Mid‐Atlantic Bight showed a significantly higher percentage of infected individuals than those collected from more northerly areas (27.8% v. 9.9%, respectively); regional variations may be accounted for by differences in habitat and diet of S. beanii among these regions. The high percentage of infected individuals in the western North Atlantic, coupled with the pathogenic nature of the fungus, suggests the possible loss of reproductively competent individuals from the population of this region. Article in Journal/Newspaper North Atlantic Wiley Online Library (via Crossref) Journal of Fish Biology 32 3 459 470 |
institution |
Open Polar |
collection |
Wiley Online Library (via Crossref) |
op_collection_id |
crwiley |
language |
English |
topic |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Aquatic Science Ecology, Evolution, Behavior and Systematics Gartner, J. V. Zwerner, D. E. An Ichthyophonus ‐typefungus in the deep‐sea pelagic fish Scopelogadus beanii (Günther) (Pisces: Melamphaidae)pathology, geographic distribution and ecological implications |
topic_facet |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
description |
Parasitological examination of 400 specimens of the lower mesopelagic‐bathypelagic melamphaid fish Scopelogadus beanii (Günther) collected from throughout the species'geographic range in the Atlantic Ocean revealed cysts ranging in size from 1 to > 20 mm diameter in the livers of 50 individuals (12.5%). Histological preparations showed that the encysted material was an Ichthyophonus‐type fungus, which destroyed the liver tissue in infected individuals by progressive necrosis, the extent of which varied with cyst number and size. Infections were found primarily in individuals > 80 mm s.l . (size of sexual maturity in S. beanii ), with a significantly higher rate of infection among females. Liver weight was significantly reduced in infected fishes. Body wet weights tended to be lower in infected females. Fish from the western Atlantic showed a significantly greater prevalence of infection (17.0%) than those from either the eastern (1.1%) or South Atlantic (7.1 %). Within the western Atlantic, individuals collected from the slope waters of the Mid‐Atlantic Bight showed a significantly higher percentage of infected individuals than those collected from more northerly areas (27.8% v. 9.9%, respectively); regional variations may be accounted for by differences in habitat and diet of S. beanii among these regions. The high percentage of infected individuals in the western North Atlantic, coupled with the pathogenic nature of the fungus, suggests the possible loss of reproductively competent individuals from the population of this region. |
format |
Article in Journal/Newspaper |
author |
Gartner, J. V. Zwerner, D. E. |
author_facet |
Gartner, J. V. Zwerner, D. E. |
author_sort |
Gartner, J. V. |
title |
An Ichthyophonus ‐typefungus in the deep‐sea pelagic fish Scopelogadus beanii (Günther) (Pisces: Melamphaidae)pathology, geographic distribution and ecological implications |
title_short |
An Ichthyophonus ‐typefungus in the deep‐sea pelagic fish Scopelogadus beanii (Günther) (Pisces: Melamphaidae)pathology, geographic distribution and ecological implications |
title_full |
An Ichthyophonus ‐typefungus in the deep‐sea pelagic fish Scopelogadus beanii (Günther) (Pisces: Melamphaidae)pathology, geographic distribution and ecological implications |
title_fullStr |
An Ichthyophonus ‐typefungus in the deep‐sea pelagic fish Scopelogadus beanii (Günther) (Pisces: Melamphaidae)pathology, geographic distribution and ecological implications |
title_full_unstemmed |
An Ichthyophonus ‐typefungus in the deep‐sea pelagic fish Scopelogadus beanii (Günther) (Pisces: Melamphaidae)pathology, geographic distribution and ecological implications |
title_sort |
ichthyophonus ‐typefungus in the deep‐sea pelagic fish scopelogadus beanii (günther) (pisces: melamphaidae)pathology, geographic distribution and ecological implications |
publisher |
Wiley |
publishDate |
1988 |
url |
http://dx.doi.org/10.1111/j.1095-8649.1988.tb05381.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1095-8649.1988.tb05381.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1095-8649.1988.tb05381.x |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Journal of Fish Biology volume 32, issue 3, page 459-470 ISSN 0022-1112 1095-8649 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1095-8649.1988.tb05381.x |
container_title |
Journal of Fish Biology |
container_volume |
32 |
container_issue |
3 |
container_start_page |
459 |
op_container_end_page |
470 |
_version_ |
1784276676371283968 |