Abstract
Smoothtongue Leuroglossus schmidti is a small mesopelagic fish species common for subarctic waters. It rises to the upper epipelagic layer at night for feeding and preys mainly on euphausiids, copepods and amphipods. Its mean index of stomach fullness reaches 68 ‱ in the epipelagic layer, but it almost doesn’t feed deeper than 200 m, judging by a little food in the stomach. In the Bering Sea, euphausiids dominate in its diet and the portion of copepods is small. In the Okhotsk Sea, each of these two groups provides a half of the diet. In the North Pacific, the portion of copepods is 63 % on average, euphausiids are the second important prey, and amphipods occur in the diet occasionally. Daily ration of smoothtongue is about 1.4 %.
Highlights
Ключевые слова: Leuroglossus schmidti, серебрянка, питание рыб, зоопланктон, индекс наполнения желудка, Берингово море, Охотское море, Тихий океан
Feeding of smoothtongue Leuroglossus schmidti in the Bering, Okhotsk Seas and adjacent waters of the Pacific Ocean // Izv
Smoothtongue Leuroglossus schmidti is a small mesopelagic fish species common for subarctic waters. It rises to the upper epipelagic layer at night for feeding and preys mainly on euphausiids, copepods and amphipods
Summary
ПИТАНИЕ ДАЛЬНЕВОСТОЧНОЙ СЕРЕБРЯНКИ LEUROGLOSSUS SCHMIDTI В БЕРИНГОВОМ, ОХОТСКОМ МОРЯХ. В Тихом океане, как и в Охотском море, серебрянка питается эвфаузиидами и копеподами, причем на долю копепод приходится до 63 %. Ключевые слова: Leuroglossus schmidti, серебрянка, питание рыб, зоопланктон, индекс наполнения желудка, Берингово море, Охотское море, Тихий океан. Efimkin A.Ya. Feeding of smoothtongue Leuroglossus schmidti in the Bering, Okhotsk Seas and adjacent waters of the Pacific Ocean // Izv. TINRO. Smoothtongue Leuroglossus schmidti is a small mesopelagic fish species common for subarctic waters. It rises to the upper epipelagic layer at night for feeding and preys mainly on euphausiids, copepods and amphipods. Дальневосточная серебрянка Leuroglossus schmidti — мелкая мезопелагическая рыба, достигающая длины 17 см, обитает в субарктических водах северной Пацифики и дальневосточных морях на глубинах до 1800 м (Борец, 1997). Автор выражает признательность сотрудникам лаборатории гидробиологии ТИНРО-центра, участвовавшим в экспедициях и выполнявшим первичную обработку проб на борту судов
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