One of the most fascinating aspects of human life is how we choose our mates. Animals also choose their mates, sometimes with a great deal of care. Mating systems are important to understand because they reflect the result of natural selection on mate ch
The male is generally not very committed to the female and provides no parental care to offspring. This is in contrast to obligate monogamy in which breeding success is dependent on both parents providing parental care. Male (but not female) dik-diks will attempt to engage in mating with othe...
During the artificial propagation of rare animal, one male and one female animals are selected. If male one is wanted, the mating time should be 3 or 9 o'clock A.M., on the 3rd, 9th, 13th, 19th, 23rd or 29th of lunar March or september. If female one is wanted, the mating time...
On the basis of simulations and genealogical data of ten dog breeds, three popular mating practices (popular sire effect, line breeding, close breeding) were investigated along with their effects on the dissemination of genetic disorders. Our results showed that the use of sires in these ten bree...
of parental care, differ from the mating systems of pulsed or seasonally breeding non-human animals in which Bateman’s principles were originally tested. ... MB Mulder,CT Ross - 《Proceedings of the Royal Society B Biological Sciences》 被引量: 0发表: 2019年 Selection on pollen and pistil ...
Puppies are born 63 days after mating. Each puppy weighs between one and one and a half pounds when they are first born. During the initial 8-12 weeks, babies nurse from their mothers for nutrition while they continue to grow and develop. It is important that puppies stay with their mothe...
Qinghai Lake – Ranked among the top 8 bird sanctuaries in the world, “Bird Island, located on this lake, is a distinctive avian breeding ground in Asia. The spring season, May to July, is the best time to visit and see bar-headed geese, cormorants, and seagulls breeding on the islan...
It isn't just humans who find their true love and stay in monogamous relationships! While multiple mating partners is often more common when it comes to animals who sexually reproduce, there are a wide variety of animal species mate for life with a sing
5. Mortality of breeding females, litter size, weight of young at weaning, the effect of parity, loss of litters and of young between birth and weaning and the sex-ratio of the young weaned were alike for both methods of mating. 6. The interaction of concurrent gestation and lactation ...
Outside of the mating season, the arroyo toad spends much of the day buried in sand or mud, emerging at night to forage for ants and other small insects. During the dry season, it enters a state of dormancy known as aestivation. Why are arroyo toads endangered? The arroyo toad population...