Особенности поведения и питания сеголетков шпрота в Балтийском море
The feeding pattern and daily variations in the feeding intensity of 0-group Baltic sprat of different size groups have been investigated for the years 1978-1985. It has been noted that the year-to-year feeding pattern and intensity of young sprat differed. The stomach content indices of sprat are decreasing with the increase of the fish size. The best feeding activity of 0-group sprat was noted in the years when Temora prevailed in the ration of the fish that is likely to be caused by the calorific value of the former. Though the lesser amount of food is consumed, the physiological states of fish were good. The daily feeding intensity in the 0-group sprat varies. The bulk of food is consumed when fish keep in shoals. With the dispersion of the shoals, the young sprat stop feeding and begin to digest the food consumed. The maxima in the stomach contents are observed in the evening (8-11 p.m.) and minima – in the morning (5 a.m.).
Main Authors: | , |
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Format: | Journal Contribution biblioteca |
Language: | Russian |
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1987
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Subjects: | Baltic sprat, Feeding pattern, Feeding intensity, 0-group sprat, ASFA_2015::F::Feeding behaviour, ASFA_2015::F::Food composition, |
Online Access: | http://hdl.handle.net/1834/9900 |
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dig-aquadocs-1834-99002021-05-19T06:57:32Z Особенности поведения и питания сеголетков шпрота в Балтийском море The feeding and behavior patterns of 0-group sprat in the Baltic Sea Starodub, M.L. Shvetsov, F.G. Baltic sprat Feeding pattern Feeding intensity 0-group sprat ASFA_2015::F::Feeding behaviour ASFA_2015::F::Food composition The feeding pattern and daily variations in the feeding intensity of 0-group Baltic sprat of different size groups have been investigated for the years 1978-1985. It has been noted that the year-to-year feeding pattern and intensity of young sprat differed. The stomach content indices of sprat are decreasing with the increase of the fish size. The best feeding activity of 0-group sprat was noted in the years when Temora prevailed in the ration of the fish that is likely to be caused by the calorific value of the former. Though the lesser amount of food is consumed, the physiological states of fish were good. The daily feeding intensity in the 0-group sprat varies. The bulk of food is consumed when fish keep in shoals. With the dispersion of the shoals, the young sprat stop feeding and begin to digest the food consumed. The maxima in the stomach contents are observed in the evening (8-11 p.m.) and minima – in the morning (5 a.m.). Изложены результаты исследования питания и суточной динамики накормленности разноразмерных групп сеголетков балтийского шпрота в 1978-1985 г. Отмечено, что интенсивность и характер питания молоди по годам сильно различались. С увеличением размеров рыб индексы наполнения желудков уменьшаются. Наилучший нагул сеголетков шпрота отмечен в годы, когда основу питания составляла темора, что, вероятно, обусловлено более высокой ее калорийностью. В эти годы при меньшем потреблении корма сегодетки находились в хорошем физиологическом состоянии. В питании сеголетков шпрота проявляется суточная динамика. В вечернее время суток (20-23 ч.) отмечен максимум накормленности, в утренние часы (5 ч.) – ее минимум. Основное потребление корма происходит тогда, когда рыбы держатся косяками. С рассеиванием косяков питание молоди ослабевает и начинается интенсивное переваривание пищи. 11. ausgabe des sonderheftes über fischereiliche untersuchungen der DDR und der UDSSR in der Ostsee. 11. выпуск совместного сборника научных статей по вопросам рыбохозяйственных исследований ГДР и СССР в Балтийском море. Published 2017-09-21T13:13:10Z 2017-09-21T13:13:10Z 1987 Journal Contribution Not Known 0428-4984 http://hdl.handle.net/1834/9900 ru pp. 53-54 Baltic Sea |
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biblioteca |
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Europa del Oeste |
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Russian |
topic |
Baltic sprat Feeding pattern Feeding intensity 0-group sprat ASFA_2015::F::Feeding behaviour ASFA_2015::F::Food composition Baltic sprat Feeding pattern Feeding intensity 0-group sprat ASFA_2015::F::Feeding behaviour ASFA_2015::F::Food composition |
spellingShingle |
Baltic sprat Feeding pattern Feeding intensity 0-group sprat ASFA_2015::F::Feeding behaviour ASFA_2015::F::Food composition Baltic sprat Feeding pattern Feeding intensity 0-group sprat ASFA_2015::F::Feeding behaviour ASFA_2015::F::Food composition Starodub, M.L. Shvetsov, F.G. Особенности поведения и питания сеголетков шпрота в Балтийском море |
description |
The feeding pattern and daily variations in the feeding intensity of 0-group Baltic sprat of different size groups have been investigated for the years 1978-1985. It has been noted that the year-to-year feeding pattern and intensity of young sprat differed. The stomach content indices of sprat are decreasing with the increase of the fish size. The best feeding activity of 0-group sprat was noted in the years when Temora prevailed in the ration of the fish that is likely to be caused by the calorific value of the former. Though the lesser amount of food is consumed, the physiological states of fish were good.
The daily feeding intensity in the 0-group sprat varies. The bulk of food is consumed when fish keep in shoals. With the dispersion of the shoals, the young sprat stop feeding and begin to digest the food consumed. The maxima in the stomach contents are observed in the evening (8-11 p.m.) and minima – in the morning (5 a.m.). |
format |
Journal Contribution |
topic_facet |
Baltic sprat Feeding pattern Feeding intensity 0-group sprat ASFA_2015::F::Feeding behaviour ASFA_2015::F::Food composition |
author |
Starodub, M.L. Shvetsov, F.G. |
author_facet |
Starodub, M.L. Shvetsov, F.G. |
author_sort |
Starodub, M.L. |
title |
Особенности поведения и питания сеголетков шпрота в Балтийском море |
title_short |
Особенности поведения и питания сеголетков шпрота в Балтийском море |
title_full |
Особенности поведения и питания сеголетков шпрота в Балтийском море |
title_fullStr |
Особенности поведения и питания сеголетков шпрота в Балтийском море |
title_full_unstemmed |
Особенности поведения и питания сеголетков шпрота в Балтийском море |
title_sort |
особенности поведения и питания сеголетков шпрота в балтийском море |
publishDate |
1987 |
url |
http://hdl.handle.net/1834/9900 |
work_keys_str_mv |
AT starodubml osobennostipovedeniâipitaniâsegoletkovšprotavbaltijskommore AT shvetsovfg osobennostipovedeniâipitaniâsegoletkovšprotavbaltijskommore AT starodubml thefeedingandbehaviorpatternsof0groupspratinthebalticsea AT shvetsovfg thefeedingandbehaviorpatternsof0groupspratinthebalticsea |
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1756076803284271104 |