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

Další údaje

• Originální 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

Anotace

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

Anotace 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

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