KFU. Card publication. Food spectrum and trophic position of an Arctic cephalopod, Rossia palpebrosa (Sepiolida), inferred by stomach contents and stable isotope (δ13C and δ15N) analyses

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FOOD SPECTRUM AND TROPHIC POSITION OF AN ARCTIC CEPHALOPOD, ROSSIA PALPEBROSA (SEPIOLIDA), INFERRED BY STOMACH CONTENTS AND STABLE ISOTOPE (δ13C AND δ15N) ANALYSES

Form of presentation

Articles in international journals and collections

Year of publication

2019

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Authors, employees of KFU

Golikov Aleksey Valentinovich, author

Sabirov Rushan Mirzovich, author

Bibliographic description in the original language

Golikov A. V., Ceia F. R., Sabirov R. M., Belyaev A. N., Blicher M. E., Arboe N. H., Zakharov D. V., Xavier J. C. Food spectrum and trophic position of an Arctic cephalopod, Rossia palpebrosa (Sepiolida), inferred by stomach contents and stable isotope (δ13C and δ15N) analyses // Marine Ecology Progress Series, 2019. – https://doi.org/10.3354/meps13152 https://www.int-res.com/prepress/m13152.html

Annotation

Rossia palpebrosa (Sepiolida) is the most abundant nekto-benthic cephalopod in the Arctic; however, its feeding and trophic ecology are largely unknown. This work aims to assess the role of this species in Arctic ecosystems based on the contents of its stomachs and analyses of δ13C and δ15N stable isotopes in its beaks. The main taxa identified in the food spectrum were Crustacea (frequency of occurrence: F = 52.1%), followed by Polychaeta (F = 14.6%) and fishes (F = 6.3%). Sipuncula and Echinoidea were occasionally found, and were recorded here as R. palpebrosa prey for the first time, as well as Polychaeta and Euphausiacea. A significant geographic increase in δ13C values (mean –19.3 ? 0.2?) from the Barents Sea to West Greenland was found, but no significant ontogenetic increase, suggesting no migrations occurred among different water masses. Values of δ15N (8.7 ? 0.2?) and trophic level (TL; 3.6 ? 0.1) revealed significant ontogenetic increases and an absence of geographic patterns, suggesting the trophic role of this species is similar throughout the studied part of the Arctic. Stable isotope values, TL and food spectrum for R. palpebrosa are close to Arctic nekto-benthic predatory fishes and shrimps, especially Pandalus borealis. However, sepiolids prey on organisms exceeding their own size and do not scavenge. Gradual ontogenetic decrease in isotopic niche width, while increasing diversity in the food spectrum of larger specimens, was observed in R. palpebrosa. However, δ13C values, i.e. variation in primary productivity supporting food sources, are more responsible for these ontogenetic differences in niche size, than δ15N values.

Keywords

Arctic cephalopods, Rossia palpebrosa (Sepiolida), food spectrum, trophic position

The name of the journal

Marine Ecology Progress Series

URL

https://www.int-res.com/prepress/m13152.html

Please use this ID to quote from or refer to the card

https://repository.kpfu.ru/eng/?p_id=212562&p_lang=2

Full metadata record

Field DC	Value	Language
dc.contributor.author	Golikov Aleksey Valentinovich	ru_RU
dc.contributor.author	Sabirov Rushan Mirzovich	ru_RU
dc.date.accessioned	2019-01-01T00:00:00Z	ru_RU
dc.date.available	2019-01-01T00:00:00Z	ru_RU
dc.date.issued	2019	ru_RU
dc.identifier.citation	Golikov A. V., Ceia F. R., Sabirov R. M., Belyaev A. N., Blicher M. E., Arboe N. H., Zakharov D. V., Xavier J. C. Food spectrum and trophic position of an Arctic cephalopod, Rossia palpebrosa (Sepiolida), inferred by stomach contents and stable isotope (δ13C and δ15N) analyses // Marine Ecology Progress Series, 2019. – https://doi.org/10.3354/meps13152 https://www.int-res.com/prepress/m13152.html	ru_RU
dc.identifier.uri	https://repository.kpfu.ru/eng/?p_id=212562&p_lang=2	ru_RU
dc.description.abstract	Marine Ecology Progress Series	ru_RU
dc.description.abstract	Rossia palpebrosa (Sepiolida) is the most abundant nekto-benthic cephalopod in the Arctic; however, its feeding and trophic ecology are largely unknown. This work aims to assess the role of this species in Arctic ecosystems based on the contents of its stomachs and analyses of δ13C and δ15N stable isotopes in its beaks. The main taxa identified in the food spectrum were Crustacea (frequency of occurrence: F = 52.1%), followed by Polychaeta (F = 14.6%) and fishes (F = 6.3%). Sipuncula and Echinoidea were occasionally found, and were recorded here as R. palpebrosa prey for the first time, as well as Polychaeta and Euphausiacea. A significant geographic increase in δ13C values (mean –19.3 ? 0.2?) from the Barents Sea to West Greenland was found, but no significant ontogenetic increase, suggesting no migrations occurred among different water masses. Values of δ15N (8.7 ? 0.2?) and trophic level (TL; 3.6 ? 0.1) revealed significant ontogenetic increases and an absence of geographic patterns, suggesting the trophic role of this species is similar throughout the studied part of the Arctic. Stable isotope values, TL and food spectrum for R. palpebrosa are close to Arctic nekto-benthic predatory fishes and shrimps, especially Pandalus borealis. However, sepiolids prey on organisms exceeding their own size and do not scavenge. Gradual ontogenetic decrease in isotopic niche width, while increasing diversity in the food spectrum of larger specimens, was observed in R. palpebrosa. However, δ13C values, i.e. variation in primary productivity supporting food sources, are more responsible for these ontogenetic differences in niche size, than δ15N values.	ru_RU
dc.language.iso	ru	ru_RU
dc.subject	Arctic cephalopods	ru_RU
dc.subject	Rossia palpebrosa (Sepiolida)	ru_RU
dc.subject	food spectrum	ru_RU
dc.subject	trophic position	ru_RU
dc.title	Food spectrum and trophic position of an Arctic cephalopod, Rossia palpebrosa (Sepiolida), inferred by stomach contents and stable isotope (δ13C and δ15N) analyses	ru_RU
dc.type	Articles in international journals and collections	ru_RU