Feeding Habits of the Atka Mackerel Pleurogrammus monopterygius in Waters off the Central Kuril Islands

The diet composition, stomach fullness, and condition factor of different size groups of the Atka mackerel Pleurogrammus monopterygius were studied in the area of the submarine plateau located in the Pacific waters off the central Kuril Islands, southeast of Onekotan Island, in June–July 1996. Accor...

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Bibliographic Details
Published in:Journal of ichthyology 2019, Vol.59 (1), p.58-64
Main Authors: Orlov, A. M., Frenkel’, S. E.
Format: Article
Language:English
Subjects:
Aquatic crustaceans
Biomedical and Life Sciences
Calories
Condition factor
Copepoda
Diet
Fish
Islands
Life Sciences
Marine fishes
Pleurogrammus monopterygius
Stomach
Submarine plateaus
Zoology
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Summary:The diet composition, stomach fullness, and condition factor of different size groups of the Atka mackerel Pleurogrammus monopterygius were studied in the area of the submarine plateau located in the Pacific waters off the central Kuril Islands, southeast of Onekotan Island, in June–July 1996. According to previously published data, mesopelagic fish forms the major part of the diet of Atka mackerel in this area, but the present study has revealed the leading role of Copepoda and Appendicularia, which is explained by different sites of material sampling: respectively, in the areas adjacent to the edge of the plateau and in its central part. It is assumed that the substantially lower condition factor of fish, as compared to previously published values, with the similar stomach fullness indices may result from the consumption of mainly low-calorie food (copepods and appendicularians).
ISSN:0032-9452
1555-6425
DOI:10.1134/S0032945219010107