Repeatability and heritability of reproductive traits in free-ranging snakes
نویسندگان
چکیده
منابع مشابه
Female Phenotype, Life History, and Reproductive Success in Free-ranging Snakes (tropidonophis Mairii)
Life-history theory posits causal links from an organism’s phenotype (e.g., its body size and condition) to its reproductive output (e.g., offspring size and number) and thence to its microevolutionary fitness. However, few empirical data are available to quantify such links, especially for tropical organisms. Oviposition by field-caught keelback snakes (Tropidonophis mairii, Colubridae) in tro...
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—Body temperatures (Tb) of eight free-ranging Heterodon platirhinos were measured with radiotelemetry throughout the year. Body temperature ranged from 5–37uC and varied with air temperature and activity. During the active season, Tb of active snakes (,30.5uC) averaged about 3uC higher than that of inactive snakes (,27.4uC). Body temperature did not differ between the sexes or between resident ...
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Persian sturgeon (Acipenser persicus) is one of the most valuable species of fish native to the Caspian Sea and Iran's waters. This study was designed to estimate heritability of Persian sturgeon eggs. In this study, 3 wild Persian sturgeons caught from the south coast of the Caspian Sea in Guilan and transferred to fish breeding programs in Shahid Beheshti rearing and propagation complex were ...
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Dairy cattle breeding programs have been based in the selection for traits related to milk production. In this research a data set of 63 herds of East Azerbaijan province Holstein cattle, collected during 2002-2013 by the Iranian Animal Breeding Center was used to estimate the repeatability and heritability of three traits of economic importance. Genetic parameters for first three lactations of...
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Data on litter production traits of does, involving 1120 litters, was collected over a 10-year period (1984 to 1994) and analyzed to estimate heritability and repeatability. Locally adapted does and bucks of predominantly New Zealand White breeding were involved. Traits studied were total litter size born and born alive, and litter size and weight at 21 days, 28 days (weaning) and 84 days (mark...
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ژورنال
عنوان ژورنال: Journal of Evolutionary Biology
سال: 2007
ISSN: 1010-061X,1420-9101
DOI: 10.1111/j.1420-9101.2006.01256.x