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They have to get in the right position - which is different from one species to another - and then have to successfully insert both their pedipalps into the female spider's genital slit, one at a time. Male spiders do not have penises and have to produce sperm that get stored in two leg-like appendages called pedipalps. The keeper oversees the reproduction of the bird-eating spiders, giant specimens who can measure up to 30cm. While male's spiders main goal is to carry on their legacy, female spiders's priority is to store lots of fat so they can birth healthy babies later in life.įemale spiders are known to be eating their sexual partners, and if males didn't have to reproduce with females to advance the species, they would absolutely avoid them, Dave Clarke, the head keeper of invertebrates at ZSL London Zoo, told Cooke.Ĭlarke, whose job includes mating the species living in captivity at the Zoo, said he feels sad for male spiders and takes spider reproduction very seriously. There are 45,000 species of spiders, and in most of them, female have the upper hand when it comes to mating.
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In spiders, the female is in charge of reproduction selection, which means she chooses the male she wants to reproduce with, so that her progeniture have the best genes. For instance, spiny lobster will 'budget' their sperm: They will refuse to mate with old, or less attractive specimens in order to keep their most potent sperm for younger females. Some species' males also have their quirks. Meanwhile, she also brought to light the fact that whales are one of the only species, alongside humans, to experience menopause, and on top of that, menopausal wales are known to have sex with younger lovers, making them 'cougars.' She found out that some of these habits are not so different from the romps us humans enjoy in the bedroom.įor instance, she reveals that several species of spiders indulge in a little of bondage, and that one in particular, the Caerostris darwini, even throws oral sex into the mix to enhance their chance of mating. Through her own research and interviews with specialists in specific species, Cooke uncovers the very varied - and often surprising - sexual habits they have developed in order to best serve their own evolution. From male spiders tying females up to menopausal orcas getting frisky with younger calves, a new book has laid bare the incredible sex lives of animals who have some seriously kinky practices.īitch: A Revolutionary Guide to Sex, Evolution and the Female Animal, by British zoologist Lucy Cooke, looks into the diverse sexual practices at play in the animal kingdom.