Giraffe males have longer suckling bouts than females
نویسندگان
چکیده
منابع مشابه
Females avoid manipulative males and live longer.
Female mate choice has been demonstrated in a wide variety of species and is now accepted as an important factor in sexual selection. One of the remaining questions, however, is why females prefer specific males. Do females or their offspring benefit from their choice? Or do females choose mates to minimize costs of mating? Here we show that, in the ovoviviparous cockroach Nauphoeta cinerea, wh...
متن کاملWhy Do Females Live Longer Than Males? - Proceedings ASTIN 2001 - Washington, United States of America
In most countries, females live several years longer than males. Many biological and behavioral reasons have been presented in the scientific literature to explain this female advantage. A crosssectional regression study, using 50 explanatory variables and data collected from 169 countries, provides support to the behavioral hypothesis. Four variables, unrelated to biological sex differences,...
متن کاملfemales have a lower liver histopathological score in hbeag-negative chronic hepatitis b than males
background: more than 350 million people are chronic carriers of hepatitis b virus (hbv) and because of the high hbv-related morbidity and mortality, the global disease burden of hbv is substantial. in patients with hbeag–negative chronic hepatitis b (chb) with serum alanine aminotransferase (alt) levels, 1-2 × upper limit of normal (uln) and hbv dna load of 10000 to 100000 copies/ml, liver bio...
متن کاملMitochondrial oxidant generation is involved in determining why females live longer than males.
Females live longer than males in many mammalian species, including humans. This natural phenomenon can be explained on the basis of the mitochondrial theory of aging. Mitochondria are a major source of free radicals in cells. Mitochondria from female rats generate half the amount of hydrogen peroxide than those of males and have higher levels of mitochondrial reduced glutathione. The latter is...
متن کاملEvolution: When Females are Brighter than Males
Females are usually considered to be more choosy than males when seeking a mating partner, resulting in the evolution of attractive males. When males are the limiting resource for receptive females, however, the females may become brightly coloured.
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: Journal of Mammalogy
سال: 2019
ISSN: 0022-2372,1545-1542
DOI: 10.1093/jmammal/gyz201