Počet záznamů: 1
Nest crypsis, reproductive value of a clutch and escape decisions in incubating female mallards Anas platyrhynchos
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SYSNO ASEP 0101759 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Ostatní články Název Nest crypsis, reproductive value of a clutch and escape decisions in incubating female mallards Anas platyrhynchos Překlad názvu Krypse hnízda, reprodukční hodnota snůšky a únikové vzdálenosti inkubujících samic kachny divoké Anas platyrhynchos Tvůrce(i) Albrecht, Tomáš (UBO-W) RID, SAI, ORCID
Klvaňa, P. (CZ)Zdroj.dok. Ethology. - : Wiley - ISSN 0179-1613
Roč. 110, č. 8 (2004), s. 603-613Poč.str. 11 s. Jazyk dok. eng - angličtina Země vyd. DE - Německo Klíč. slova ducks ; behavior ; reproduction Vědní obor RIV EG - Zoologie CEP IAA6093403 GA AV ČR - Akademie věd IAB6130001 GA AV ČR - Akademie věd CEZ AV0Z6093917 - UBO-W DOI 10.1111/j.1439-0310.2004.00992.x Anotace Escape decisions of incubating parents should be optimized based on the risk-to-parent/cost of escape equilibrium. Animal prey may assess predation risk depending on a variety of cues. We examined interactive effects of nest crypsis and the current reproductive value of a clutch on flushing distances in incubating mallards approached by a human. Flushing distances were inversely correlated with measures of the reproductive value of the current clutch. In addition, individual females tended to increase/decrease flushing distances according to change in nest cover. The results further suggest that vegetation concealment greatly influenced the risk of nest detection by local predators, suggesting that vegetation may act as a protective cover for incubating female. A femaleŽs ability to delay flushes according to the actual vegetation cover might be viewed as an antipredator strategy that reduces premature nest advertising to visually oriented predators. Pracoviště Ústav biologie obratlovců Kontakt Hana Slabáková, slabakova@ivb.cz, Tel.: 543 422 524 Rok sběru 2005
Počet záznamů: 1