Forget about the idea that animals only have sex to reproduce. Dolphins, bats, rams, bonobos or lions show that homosexual pleasure and behaviors are also part of nature. And not only that: there are species that change sex, that transmit diseases such as chlamydia or that transform their body to imitate genitals. All this composes a panorama as unexpected as fascinating.
Science and apartthe Xataka section that was born to look at science with magnifying glass and do it in the company of experts, Return with a new episode in Our YouTube channelalso available on Spotify and Ivoox. On this occasion, Ángela Blanco interviews Ricardo MoureBiologist and Doctor in Biotechnology, with a very clear purpose: to explore what biology has discovered about sex in animals and leave aside the myths that we still drag.
One of the points of the conversation is homosexuality in the animal kingdom. Moure clarifies from the beginning: “To be correct at a technical level, in animals we cannot talk about homosexual individuals or homosexual animals. We talk about homosexual behaviors“And add concrete examples:” Among the rams, one in five has sex with both males and females, and one in 10 only with other males. “
Another of the issues raised by the interview is that of pleasure in animal sex. Moure recognizes the difficulty of measuring it: “In the case of whether animals feel some kind of sexual pleasure, this is complicated because, of course, we cannot get into the mind of an animal and know its subjective perception, but it is true that it has been investigated if there are species in which there is sexual pleasure.” The clearest examples appear in social species, from primates to cetaceans, where relationships do not always seek offspring.
Among the most graphic examples mentioned by Moure is the relationship between sexual behavior and the size of the testicles. “The size of the testicles depends a little on this,” he says. The contrast is striking: “Gorillas can reach 200 kg, they have testicles that are like two olives (…) but instead bonobos (…) They have very large testicles”The key is in sperm competition, which favors species where females maintain relations with several males.
It also stops in the biological mechanisms that allow some species to change sex. “When a male clown fish is widowed, it changes sex and becomes the female,” Moure details, remembering that all these fish are born males and that their role depends on the structure of the group. But there are more factors that alter the proportion of sexes: “humans also greatly affect the distribution of sexes because of climate change,” he says.
The interview also addresses a less known aspect: sexually transmitted diseases in animals. “A case that draws a lot of attention is that of the Koalas. The Koalas in Australia have a CLAMIDIA EPIDEMIA that the species is being loaded, ”says Moure. The problem is serious because it causes infertility and is very difficult to treat.
What we have advanced here is just a fragment of an episode loaded with data, anecdotes and explanations that show this aspect in the animal kingdom. In Science and apartRicardo Moure provides keys that invite you to think otherwise the relationship between biology and sex. The chapter is now available. Choose the platform you want to enjoy it.
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