Some peculiarities in Patagonoian toothfish Dissostichus eleginoides (Nototheniidae) biology in the area of the Kerguelen Islands (Sub-Antarctica, Indian Ocean)
Distribution and feeding habits of the Patagonian toothfish Dissostichus eleginoides from the Kerguelen Isles region (Southern Indian Ocean, France) in the summer season 1991-1992 are discussed. The studies based on the material collected by the author aboard freezing trawler Poltava. The fieldwork...
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1994
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ftoceandocs:oai:aquadocs.org:1834/15805 2023-05-15T13:57:37+02:00 Some peculiarities in Patagonoian toothfish Dissostichus eleginoides (Nototheniidae) biology in the area of the Kerguelen Islands (Sub-Antarctica, Indian Ocean) Некоторые особенности биологии патагонского клыкача Dissostichus eleginoides (Nototheniidae) в районе островов Кергелен (Субантарктика, Индийский океан) Pshenichnov, L.K. Yakovlev, V.N. Kerguelen Southern Ocean Кергелен Южный океан 1994 pp.78-83 http://hdl.handle.net/1834/15805 ru rus УДК 597.58(267) http://hdl.handle.net/1834/15805 Patagonian toothfish Feeding behaviour Geographical distribution Dissostichus eleginoides Freezing trawlers Food organisms Species composition Jellyfish Vertical distribution Fishing areas Food availability Патагонский клыкач Географическое распределение Пищевой рацион Спектр питания Сезонная динамика Journal Contribution Non Refereed 1994 ftoceandocs 2023-04-06T17:00:43Z Distribution and feeding habits of the Patagonian toothfish Dissostichus eleginoides from the Kerguelen Isles region (Southern Indian Ocean, France) in the summer season 1991-1992 are discussed. The studies based on the material collected by the author aboard freezing trawler Poltava. The fieldwork was done in the austral summer 1991-1992 (November-April) within the insular shelf and slope. The Patagonian toothfish feeding largely on fish and squid, but can switch prey to consume available food (Hyperiids), accessory (gelatinous organisms) or incidental such as bottom crustaceans, octopuses, food waste from the ships galley. There is a regular depth distribution pattern of size-segregated groups of the toothfish within one fishing area -- the larger fish occurring at greater depths. These size- and depth-segregated groups have also been observed to differ in their diet, there being differences in qualitative composition of their prey at different depths. Seasonal (summer) shift of the size-segregated groups to greater depths has been observed. The fish that were taken in April at depth 550-600 m were supposed to be of the groups that had occurred at depths of 350-400 m during December-April. Seasonal variation in food species composition of the Patagonian toothfish at depths of 500 to 600 m has been recognised. Cold water gelatinous organisms (Salpae, Ctenophora, Scyphomedusae) -- staple food for D. eleginoides during December to February were replaced by a natal-subtropical species of squid (Chiroteuthis veranyi). Патагонский клыкач, питаясь на промысловых участках в основном рыбой и кальмарами, при определенных условиях может переходить на питание более доступной (гиперииды), второстепенной (желетелые организмы) или случайной (донные ракообразные, осьминоги, отходы с судов) пищей. Выявлено закономерное прямое распределение размерных группировок клыкача по глубинам в пределах одного промыслового участка (северного) — более крупные (взрослые) особи обитают на больших глубинах. Также отмечено различие в спектре ... Other Non-Article Part of Journal/Newspaper Antarc* Antarctica Kerguelen Islands Patagonian Toothfish Southern Ocean IODE-UNESCO: OceanDocs - E-Repository of Ocean Publications Austral Indian Kerguelen Kerguelen Islands Southern Ocean Южный Океан ENVELOPE(90.000,90.000,-60.000,-60.000) |
institution |
Open Polar |
collection |
IODE-UNESCO: OceanDocs - E-Repository of Ocean Publications |
op_collection_id |
ftoceandocs |
language |
Russian |
topic |
Patagonian toothfish Feeding behaviour Geographical distribution Dissostichus eleginoides Freezing trawlers Food organisms Species composition Jellyfish Vertical distribution Fishing areas Food availability Патагонский клыкач Географическое распределение Пищевой рацион Спектр питания Сезонная динамика |
spellingShingle |
Patagonian toothfish Feeding behaviour Geographical distribution Dissostichus eleginoides Freezing trawlers Food organisms Species composition Jellyfish Vertical distribution Fishing areas Food availability Патагонский клыкач Географическое распределение Пищевой рацион Спектр питания Сезонная динамика Pshenichnov, L.K. Some peculiarities in Patagonoian toothfish Dissostichus eleginoides (Nototheniidae) biology in the area of the Kerguelen Islands (Sub-Antarctica, Indian Ocean) |
topic_facet |
Patagonian toothfish Feeding behaviour Geographical distribution Dissostichus eleginoides Freezing trawlers Food organisms Species composition Jellyfish Vertical distribution Fishing areas Food availability Патагонский клыкач Географическое распределение Пищевой рацион Спектр питания Сезонная динамика |
description |
Distribution and feeding habits of the Patagonian toothfish Dissostichus eleginoides from the Kerguelen Isles region (Southern Indian Ocean, France) in the summer season 1991-1992 are discussed. The studies based on the material collected by the author aboard freezing trawler Poltava. The fieldwork was done in the austral summer 1991-1992 (November-April) within the insular shelf and slope. The Patagonian toothfish feeding largely on fish and squid, but can switch prey to consume available food (Hyperiids), accessory (gelatinous organisms) or incidental such as bottom crustaceans, octopuses, food waste from the ships galley. There is a regular depth distribution pattern of size-segregated groups of the toothfish within one fishing area -- the larger fish occurring at greater depths. These size- and depth-segregated groups have also been observed to differ in their diet, there being differences in qualitative composition of their prey at different depths. Seasonal (summer) shift of the size-segregated groups to greater depths has been observed. The fish that were taken in April at depth 550-600 m were supposed to be of the groups that had occurred at depths of 350-400 m during December-April. Seasonal variation in food species composition of the Patagonian toothfish at depths of 500 to 600 m has been recognised. Cold water gelatinous organisms (Salpae, Ctenophora, Scyphomedusae) -- staple food for D. eleginoides during December to February were replaced by a natal-subtropical species of squid (Chiroteuthis veranyi). Патагонский клыкач, питаясь на промысловых участках в основном рыбой и кальмарами, при определенных условиях может переходить на питание более доступной (гиперииды), второстепенной (желетелые организмы) или случайной (донные ракообразные, осьминоги, отходы с судов) пищей. Выявлено закономерное прямое распределение размерных группировок клыкача по глубинам в пределах одного промыслового участка (северного) — более крупные (взрослые) особи обитают на больших глубинах. Также отмечено различие в спектре ... |
author2 |
Yakovlev, V.N. |
format |
Other Non-Article Part of Journal/Newspaper |
author |
Pshenichnov, L.K. |
author_facet |
Pshenichnov, L.K. |
author_sort |
Pshenichnov, L.K. |
title |
Some peculiarities in Patagonoian toothfish Dissostichus eleginoides (Nototheniidae) biology in the area of the Kerguelen Islands (Sub-Antarctica, Indian Ocean) |
title_short |
Some peculiarities in Patagonoian toothfish Dissostichus eleginoides (Nototheniidae) biology in the area of the Kerguelen Islands (Sub-Antarctica, Indian Ocean) |
title_full |
Some peculiarities in Patagonoian toothfish Dissostichus eleginoides (Nototheniidae) biology in the area of the Kerguelen Islands (Sub-Antarctica, Indian Ocean) |
title_fullStr |
Some peculiarities in Patagonoian toothfish Dissostichus eleginoides (Nototheniidae) biology in the area of the Kerguelen Islands (Sub-Antarctica, Indian Ocean) |
title_full_unstemmed |
Some peculiarities in Patagonoian toothfish Dissostichus eleginoides (Nototheniidae) biology in the area of the Kerguelen Islands (Sub-Antarctica, Indian Ocean) |
title_sort |
some peculiarities in patagonoian toothfish dissostichus eleginoides (nototheniidae) biology in the area of the kerguelen islands (sub-antarctica, indian ocean) |
publishDate |
1994 |
url |
http://hdl.handle.net/1834/15805 |
op_coverage |
Kerguelen Southern Ocean Кергелен Южный океан |
long_lat |
ENVELOPE(90.000,90.000,-60.000,-60.000) |
geographic |
Austral Indian Kerguelen Kerguelen Islands Southern Ocean Южный Океан |
geographic_facet |
Austral Indian Kerguelen Kerguelen Islands Southern Ocean Южный Океан |
genre |
Antarc* Antarctica Kerguelen Islands Patagonian Toothfish Southern Ocean |
genre_facet |
Antarc* Antarctica Kerguelen Islands Patagonian Toothfish Southern Ocean |
op_relation |
УДК 597.58(267) http://hdl.handle.net/1834/15805 |
_version_ |
1766265338756857856 |