Sexual Maturity of Male Chickens Selected for Mating Ability
نویسندگان
چکیده
منابع مشابه
Genetics of behavior: selection for mating ability in chickens.
MATING behavior in animals is complex and determined by diverse genetic and environmental factors. As one aspect of this behavior, mating frequency in chickens has received considerable attention ( UPP 1928; WOOD-GUSH 1956; MCDANIEL and CRAIG 1959; SIEGEL 1959; CARBAUGH, SCHEIN and HALE 1962; JUSTICE, MCDANIEL and CRAIG 1962). These reports, while not in agreement on the best procedures for the...
متن کاملEgg Viability, Mating Frequency and Male Mating Ability Evolve in Populations of Drosophila melanogaster Selected for Resistance to Cold Shock
BACKGROUND Ability to resist temperature shock is an important component of fitness of insects and other ectotherms. Increased resistance to temperature shock is known to affect life-history traits. Temperature shock is also known to affect reproductive traits such as mating ability and viability of gametes. Therefore selection for increased temperature shock resistance can affect the evolution...
متن کاملMale-mating Ability in Drosophila Melanogaster
The effect of full-sib inbreeding on competitive male-mating ability (CI8) in Drosophila melanogaster was investigated in two experiments. In the first, five inbred lines (with reserves) were assessed up to 18 generations. Linear inbreeding depression, of 5.9% per 10% increase in homozygosity, was observed. In a second experiment, 21 inbred lines were tested after three generations of full-sib ...
متن کاملEffects of prenatal stress on male offspring sexual maturity.
Prenatal stimulations have been shown to have long-term effects on at reproductive activity. We evaluated the influence of the prenatal stress on the hypothalamic-pituitary-gonad (HPG) axis in male offsprings from mothers with high number of offsprings per litter (HNL) and low number of offsprings per litter (LNL) after hypothesizing that the number of offsprings per litter may modify the effec...
متن کاملSexual Experience Enhances Drosophila melanogaster Male Mating Behavior and Success
Competition for mates is a wide-spread phenomenon affecting individual reproductive success. The ability of animals to adjust their behaviors in response to changing social environment is important and well documented. Drosophila melanogaster males compete with one another for matings with females and modify their reproductive behaviors based on prior social interactions. However, it remains to...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Poultry Science
سال: 1965
ISSN: 0032-5791
DOI: 10.3382/ps.0440070