Scavenger assemblages under differing trophic conditions: a case study in the deep Arabian Sea
Baited cameras and traps were deployed at four stations in the deep Arabian Sea to investigate the composition of the necrophagous fauna and to evaluate whether regional differences in trophic conditions are reflected by differing scavenger assemblages. The ophidiid fish Barathrites iris, the large...
Published in: | Deep Sea Research Part II: Topical Studies in Oceanography |
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ftawi:oai:epic.awi.de:44152 2024-09-15T18:05:18+00:00 Scavenger assemblages under differing trophic conditions: a case study in the deep Arabian Sea Janssen, Felix Treude, Tina Witte, Ursula 2000 https://epic.awi.de/id/eprint/44152/ https://doi.org/10.1016/S0967-0645(00)00056-4 https://hdl.handle.net/10013/epic.50537 unknown Janssen, F. orcid:0000-0002-5607-4012 , Treude, T. and Witte, U. (2000) Scavenger assemblages under differing trophic conditions: a case study in the deep Arabian Sea , Deep Sea Research Part II: Topical Studies in Oceanography, 47 (14), pp. 2999-3026 . doi:10.1016/S0967-0645(00)00056-4 <https://doi.org/10.1016/S0967-0645%2800%2900056-4> , hdl:10013/epic.50537 EPIC3Deep Sea Research Part II: Topical Studies in Oceanography, 47(14), pp. 2999-3026, ISSN: 09670645 Article isiRev 2000 ftawi https://doi.org/10.1016/S0967-0645(00)00056-4 2024-06-24T04:17:43Z Baited cameras and traps were deployed at four stations in the deep Arabian Sea to investigate the composition of the necrophagous fauna and to evaluate whether regional differences in trophic conditions are reflected by differing scavenger assemblages. The ophidiid fish Barathrites iris, the large lysianassoid amphipod Eurythenes gryllus, the aristeid prawn Plesiopenaeus armatus, and zoarcid fishes of the genus Pachycara were abundant at the bait at all stations. The ophidiid Holcomycteronus aequatorius, the liparid fish Paraliparis sp., and galatheid crabs of the genus Munidopsis occurred in considerable numbers at single sites. Trap catches further contained lysianassoid amphipods of the genera Paralicella, Abyssorchomene and Paracallisoma. In contrast to scavenger assemblages of the Atlantic and Pacific Ocean, macrourid fishes were virtually absent at the bait. E. gryllus and B. iris consumed the main proportion of the bait, while consumption was at most moderate in all other taxa. Feeding strategies of the respective taxa are inferred from their behavior at the bait and discussed with regard to the profit that can be drawn from food falls. Differences between stations were pronounced with respect to species dominating bait consumption. E. gryllus appeared in highest numbers at the bait in the productive northern and central Arabian Sea where a relatively high availability of food items is expected to sustain high population densities. High numbers of B. iris in the least productive southern part indicate their ability to persist under food-poor conditions and may correspond to a high dependency on food falls. E. gryllus and B. iris both occurred in smaller numbers in the particularly productive western Arabian Sea. This may reflect a reduced dependency on food falls, due to an access to alternative food sources, rather than small population densities. Smaller numbers of E. gryllus and B. iris resulted in slower bait consumption and gave Pachycara spp. the opportunity to contribute considerably to bait ... Article in Journal/Newspaper Eurythenes gryllus Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Deep Sea Research Part II: Topical Studies in Oceanography 47 14 2999 3026 |
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Open Polar |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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ftawi |
language |
unknown |
description |
Baited cameras and traps were deployed at four stations in the deep Arabian Sea to investigate the composition of the necrophagous fauna and to evaluate whether regional differences in trophic conditions are reflected by differing scavenger assemblages. The ophidiid fish Barathrites iris, the large lysianassoid amphipod Eurythenes gryllus, the aristeid prawn Plesiopenaeus armatus, and zoarcid fishes of the genus Pachycara were abundant at the bait at all stations. The ophidiid Holcomycteronus aequatorius, the liparid fish Paraliparis sp., and galatheid crabs of the genus Munidopsis occurred in considerable numbers at single sites. Trap catches further contained lysianassoid amphipods of the genera Paralicella, Abyssorchomene and Paracallisoma. In contrast to scavenger assemblages of the Atlantic and Pacific Ocean, macrourid fishes were virtually absent at the bait. E. gryllus and B. iris consumed the main proportion of the bait, while consumption was at most moderate in all other taxa. Feeding strategies of the respective taxa are inferred from their behavior at the bait and discussed with regard to the profit that can be drawn from food falls. Differences between stations were pronounced with respect to species dominating bait consumption. E. gryllus appeared in highest numbers at the bait in the productive northern and central Arabian Sea where a relatively high availability of food items is expected to sustain high population densities. High numbers of B. iris in the least productive southern part indicate their ability to persist under food-poor conditions and may correspond to a high dependency on food falls. E. gryllus and B. iris both occurred in smaller numbers in the particularly productive western Arabian Sea. This may reflect a reduced dependency on food falls, due to an access to alternative food sources, rather than small population densities. Smaller numbers of E. gryllus and B. iris resulted in slower bait consumption and gave Pachycara spp. the opportunity to contribute considerably to bait ... |
format |
Article in Journal/Newspaper |
author |
Janssen, Felix Treude, Tina Witte, Ursula |
spellingShingle |
Janssen, Felix Treude, Tina Witte, Ursula Scavenger assemblages under differing trophic conditions: a case study in the deep Arabian Sea |
author_facet |
Janssen, Felix Treude, Tina Witte, Ursula |
author_sort |
Janssen, Felix |
title |
Scavenger assemblages under differing trophic conditions: a case study in the deep Arabian Sea |
title_short |
Scavenger assemblages under differing trophic conditions: a case study in the deep Arabian Sea |
title_full |
Scavenger assemblages under differing trophic conditions: a case study in the deep Arabian Sea |
title_fullStr |
Scavenger assemblages under differing trophic conditions: a case study in the deep Arabian Sea |
title_full_unstemmed |
Scavenger assemblages under differing trophic conditions: a case study in the deep Arabian Sea |
title_sort |
scavenger assemblages under differing trophic conditions: a case study in the deep arabian sea |
publishDate |
2000 |
url |
https://epic.awi.de/id/eprint/44152/ https://doi.org/10.1016/S0967-0645(00)00056-4 https://hdl.handle.net/10013/epic.50537 |
genre |
Eurythenes gryllus |
genre_facet |
Eurythenes gryllus |
op_source |
EPIC3Deep Sea Research Part II: Topical Studies in Oceanography, 47(14), pp. 2999-3026, ISSN: 09670645 |
op_relation |
Janssen, F. orcid:0000-0002-5607-4012 , Treude, T. and Witte, U. (2000) Scavenger assemblages under differing trophic conditions: a case study in the deep Arabian Sea , Deep Sea Research Part II: Topical Studies in Oceanography, 47 (14), pp. 2999-3026 . doi:10.1016/S0967-0645(00)00056-4 <https://doi.org/10.1016/S0967-0645%2800%2900056-4> , hdl:10013/epic.50537 |
op_doi |
https://doi.org/10.1016/S0967-0645(00)00056-4 |
container_title |
Deep Sea Research Part II: Topical Studies in Oceanography |
container_volume |
47 |
container_issue |
14 |
container_start_page |
2999 |
op_container_end_page |
3026 |
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1810442876360851456 |