How the male mantis keeps its head during rough sex
A male Springbok praying mantis looking for a hook up doesn't have to worry about a female stealing his heart away.
A male Springbok praying mantis looking for a hook up doesn't have to worry about a female stealing his heart away.
Plants & Animals
Jan 20, 2021
2
391
Scientists from the Leibniz Institute for Zoo and Wildlife Research (Leibniz-IZW) have found that interacting with other males is more "stressful" for low-ranking than for high-ranking male spotted hyenas. This restricts ...
Plants & Animals
Jan 19, 2021
0
5
A lonely rhinoceros at a Bangladesh zoo is looking for new love after losing her partner seven years ago, but pandemic travel restrictions are hampering her keeper's attempts to play matchmaker.
Plants & Animals
Jan 15, 2021
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6
Having genitals of a certain shape and size gives male flies a major reproductive advantage, new research shows.
Plants & Animals
Jan 15, 2021
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201
Research from the University of Adelaide has found that some species of fish will have higher reproductive capacity because of larger sex organs, under the more acidic oceans of the future.
Ecology
Dec 30, 2020
9
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In many animals, female preference for males with the most elaborate appearance is an important factor in the evolution of bright and dramatic colors.
Ecology
Dec 22, 2020
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Males may put a lot of effort into attracting females. Male peacocks flaunt eye-catching trains, but male bats, because they are active at night, may rely on females' sense of smell to draw them in. Three years ago, Victoria ...
Plants & Animals
Dec 16, 2020
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46
Monash University researchers have combined acoustic waves and fluid dynamics to create a new approach for separating high-quality sperm in assisted reproduction—opening new windows for infertile couples to have a family ...
Analytical Chemistry
Dec 07, 2020
1
16
A dwindling tribe of chimpanzees in Guinea that gained global fame for uncanny abilities to use tools has a glimmer of hope after its last fertile female gave birth.
Plants & Animals
Nov 26, 2020
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229
Dolphins actively slow down their hearts before diving, and can even adjust their heart rate depending on how long they plan to dive for, a new study suggests. Published in Frontiers in Physiology, the findings provide new ...
Plants & Animals
Nov 24, 2020
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1597
Male (♂) refers to the sex of an organism, or part of an organism, which produces small mobile gametes, called spermatozoa. Each spermatozoon can fuse with a larger female gamete or ovum, in the process of fertilization. A male cannot reproduce sexually without access to at least one ovum from a female, but some organisms can reproduce both sexually and asexually.
Not all species share a common sex-determination system. In humans and most animals, sex is determined genetically but in other species it can be determined due to social, environmental, or other factors. The existence of two sexes seems to have been selected independently across different evolutionary lineages (see Convergent Evolution). Accordingly, sex is defined operationally across species by the type of gametes produced (ie: spermatozoa vs. ova) and differences between males and females in one lineage are not always predictive of differences in another.
Male/Female dimorphism between organisms or reproductive organs of different sexes is not limited to animals; male gametes are produced by chytrids, diatoms and land plants, among others. In land plants, female and male designate not only the female and male gamete-producing organisms and structures but also the structures of the sporophytes that give rise to male and female plants.
This text uses material from Wikipedia, licensed under CC BY-SA