Variation in the onset of incubation and its influence on avian hatching success and asynchrony
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Variation in the Onset of Incubation in a Neotropical Parrot
We studied the onset of incubation in the Green-rumped Parrotlet (Forpus passerinus), a cavity-nesting species with female-only incubation starting on the first egg and asynchronous hatching. We quantified how the onset of incubation varied among individual females, with stage of egg-laying and by ultimate clutch size. We then examined whether this variation affected the incubation period and h...
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In most bird species, the timing of incubation onset may influence the degree of hatching asynchrony, which, together with variation in clutch size, affects reproductive success. In some domesticated species that usually show no hatching asynchrony, plasma prolactin concentrations in females rise with the onset of incubation and the end of laying, and this rise enhances incubation behavior and ...
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This experiment was carried out to examine the effect of temperature on egg incubation period, exogenous feeding onset, growth and survival of the zebra cichlid , Cichlasoma nigrofasciatum larvae with two replications. Experiment was conducted in four groups of brood stocks with Four temperatures with two replications 22-24 °C, 24-26 °C, 26-28 °C and 28-30 °C. After ovulation brood stocks were ...
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Avian brood parasites, including cuckoos and cowbirds, have multiple negative effects on their hosts. We analysed the effects of Shiny Cowbird Molothrus bonariensis parasitism on different components (e.g. egg losses, hatching success, chick survival and nest abandonment) of House Wren Troglodytes aedon reproductive success. We also conducted an experiment to discriminate between two mechanisms...
متن کاملEcological, evolutionary, and conservation implications of incubation temperature-dependent phenotypes in birds.
Incubation is a vital component of reproduction and parental care in birds. Maintaining temperatures within a narrow range is necessary for embryonic development and hatching of young, and exposure to both high and low temperatures can be lethal to embryos. Although it is widely recognized that temperature is important for hatching success, little is known about how variation in incubation temp...
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تاریخ انتشار 2009