CIRCADIAN CHANGES IN FEEDING ACTIVITY AND DIET OF HYDROPSYCHE SAXONICA MCLACHLAN, 1884

TAJMROVÁ, Lenka a Jan HELEŠIC. CIRCADIAN CHANGES IN FEEDING ACTIVITY AND DIET OF HYDROPSYCHE SAXONICA MCLACHLAN, 1884. In Symposium RIVER BOTTOM VI, Book of abstracts. 1. vyd. Brno: Masarykova univerzita v Brně, 2005, s. 62.

Základní údaje

Originální název

CIRCADIAN CHANGES IN FEEDING ACTIVITY AND DIET OF HYDROPSYCHE SAXONICA MCLACHLAN, 1884

Název česky

Denní potravní aktivita a potrava HYDROPSYCHE SAXONICA MCLACHLAN, 1884

Autoři

TAJMROVÁ, Lenka (203 Česká republika, garant) a Jan HELEŠIC (203 Česká republika)

Vydání

1. vyd. Brno, Symposium RIVER BOTTOM VI, Book of abstracts, s. 62-62, 2005

Nakladatel

Masarykova univerzita v Brně

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Další údaje

Jazyk

angličtina

Typ výsledku

Stať ve sborníku

Obor

10600 1.6 Biological sciences

Stát vydavatele

Česká republika

Utajení

není předmětem státního či obchodního tajemství

Kód RIV

RIV/00216224:14310/05:00012853

Organizační jednotka

Přírodovědecká fakulta

Klíčová slova anglicky

Hydropsyche saxonica; instars; circadian changes; feeding activity; diet

Štítky

circadian changes, diet, feeding activity, Hydropsyche saxonica, instars

Příznaky

Mezinárodní význam

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Anotace

V originále

Circadian changes in feeding activity and diet of IV and V instar larvae of Hydropsyche saxonica were studied in the Vrbovecký brook (Czech Republic) during one 24-hour period on 22nd and 23rd October 2004. The larvae were hand-picked at 6-hour intervals. The ratio maximum foregut width/head capsule width was used to determine gut fullness. A one-way ANOVA revealed significant differences in gut fullness among V instar larvae collected at different times. Mean value of the ratio was higher for the larvae collected at dusk and at dawn indicating their crepuscular activity. No significant differences were recorded for IV instar larvae. The contents of larval foreguts were analysed using millipore filter technique. There were no differences in gut contents among the V instar or among the IV instar larvae collected at different times. But the difference between gut contents of V instar and IV instar larvae was significant. Amorphous detritus was the most important food source for IV instars whereas V instars fed mainly on animal food

Česky

Circadian changes in feeding activity and diet of IV and V instar larvae of Hydropsyche saxonica were studied in the Vrbovecký brook (Czech Republic) during one 24-hour period on 22nd and 23rd October 2004. The larvae were hand-picked at 6-hour intervals. The ratio maximum foregut width/head capsule width was used to determine gut fullness. A one-way ANOVA revealed significant differences in gut fullness among V instar larvae collected at different times. Mean value of the ratio was higher for the larvae collected at dusk and at dawn indicating their crepuscular activity. No significant differences were recorded for IV instar larvae. The contents of larval foreguts were analysed using millipore filter technique. There were no differences in gut contents among the V instar or among the IV instar larvae collected at different times. But the difference between gut contents of V instar and IV instar larvae was significant. Amorphous detritus was the most important food source for IV instars whereas V instars fed mainly on animal food

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Návaznosti

GA206/02/0902, projekt VaV	Název: Životní strategie meio-makrozoobentosu tekoucích vod Investor: Grantová agentura ČR, Životní strategie meio-makrozoobentsu tekoucích vod
MSM 143100010, záměr	Název: Časoprostorová dynamika biodiverzity v ekosystémech střední Evropy. Investor: Ministerstvo školství, mládeže a tělovýchovy ČR, Časoprostorová dynamika biodiverzity v ekosystémech střední Evropy
MSM0021622416, záměr	Název: Diverzita biotických společenstev a populací: kauzální analýza variability v prostoru a čase Investor: Ministerstvo školství, mládeže a tělovýchovy ČR, Diverzita biotických společenstev: kauzální analýza variability v prostoru a čase