Weba. because breeding among close relatives leads to a higher proportion of offspring with genetic defects and, consequently, reduced fitness. b. as part of a larger fixed action pattern. c. because many bees, wasps, and ants can inflict painful, and even fatal, stings and bites. Web1 jan. 2016 · A newborn male then receives more parental investment and would have better mating prospects than a newborn female and therefore can expect to have more offspring. Therefore, parents who are genetically more disposed to producing males would have more than average numbers of offspring. As a result, male to female sex ratio …
Male Parental Care in the Bony Fishes - JSTOR
WebA monogamic bond strongly favors the evolution of male investment in the raising of offspring, as is the case in most birds (90% of bird species are monogamic and most exhibit biparental care of young). Mammals exhibit this type of behavior to a far lesser extent (female mammals monopolize the feeding of newly born young). Web29 dec. 2016 · The relative contribution that male and female parents make to offspring care varies by species. In amphibians, male-only and female-only parental investments express themselves fairly equally, while biparental investment is less common. Among reptiles that exhibit parental investment, either only the female or both parents provide … couch and sofa sellers
Male parental care and its adaptive significance in a neotropical frog
Web21 uur geleden · Male mate choice occurs most often when males are substantially involved in caring for their offspring, or when there is great variation in the quality of the females … Web14 jun. 2016 · Altogether our study reveals that different care behaviours allow males to gain fitness benefits via increased female fecundity, and specifically when provisioning … Web21 mrt. 2012 · 1. Introduction. Parental decisions about brood care reflect a trade-off between fitness gained from raising the current brood and other aspects of fitness, such … bred and