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@article{724430,
author = {Tajmrová, Lenka and Helešic, Jan},
article_location = {Weinheim},
article_number = {4 - 5},
keywords = {stream benthos; larval instars feeding; activity patterns},
language = {eng},
issn = {1434-2944},
journal = {International Review of Hydrobiology},
title = {Circadian Changes in Feeding Activity and Diet of Hydropsyche saxonica (Trichoptera)},
volume = {92 - 2007},
year = {2007}
}
TY - JOUR
ID - 724430
AU - Tajmrová, Lenka - Helešic, Jan
PY - 2007
TI - Circadian Changes in Feeding Activity and Diet of Hydropsyche saxonica (Trichoptera)
JF - International Review of Hydrobiology
VL - 92 - 2007
IS - 4 - 5
SP - 539 - 544
EP - 539 - 544
PB - WILEY-VCH Verlag GmbH & Co. KGaA
SN - 14342944
KW - stream benthos
KW - larval instars feeding
KW - activity patterns
N2 - Circadian changes in feeding activity and diet of instar IV and V larvae of Hydropsyche saxonica were studied in the Vrbovecký brook (Czech Republic). The larvae were hand-picked at 6-hour intervals. The ratio maximum foregut diameter/head capsule width was used to determine gut fullness and the contents of larval foreguts were analyzed using a millipore filter technique. One-way ANOVA revealed significant differences in gut fullness among instar V larvae collected at different times. Guts were fuller in the larvae collected at dusk and at dawn, indicating high crepuscular activity. No significant temporal differences in gut fullness were recorded for instar IV larvae. There were no significant differences in foregut contents among instar V or among instar IV larvae collected at different times. However, the difference between foregut contents of instar V and IV larvae was significant. Amorphous detritus was the most important food source for instars IV, whereas instars V fed mainly on animal food and cellular detritus.
ER -
TAJMROVÁ, Lenka a Jan HELEŠIC. Circadian Changes in Feeding Activity and Diet of Hydropsyche saxonica (Trichoptera). \textit{International Review of Hydrobiology}. Weinheim: WILEY-VCH Verlag GmbH \&{} Co. KGaA, 2007, roč.~92 - 2007, 4 - 5, s.~539 - 544. ISSN~1434-2944.
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