Forty-eight adult and 17 immature male lined snakes (Tropidoclonion lineatum) were collected in St. Louis, Missouri, during the active seasons of 1978-1980. Testis mass was lowest in early spring and ...

Snakes, found on all continents except Antarctica, play vital roles in ecosystems. With over 3,000 species, they exhibit unique mating behaviors such as forming mating balls. Crossbreeding is possible ...

For years scientists have known that some species of sharks, fish and lizards are capable of "virgin births," asexual reproduction known as parthenogenesis that occurs when unfertilized eggs develop.

This is a preview. Log in through your library . Abstract Reproductive tissue was examined from 20 museum specimens of Gyalopion canum from the southwestern United States and Mexico. The first ...

Every spring, red-sided garter snakes leave their hibernation burrows to engage in a frenzied jumble of mating. But a new study finds that doing the deed is no easy feat for males; in fact, they can ...

Deadly pit vipers are capable of virgin birth, scientists now find, joining their constrictor relatives in the ability to reproduce without sex. Female pit vipers can also conserve sperm after sex for ...

Love is in the air in Lancaster County. If you’re a venomous snake, that is. Jesse Rothacker of the Forgotten Friend Reptile Sanctuary recorded on Facebook Live Sunday a pair of mating copperhead ...

A long-term study of copperhead snakes in a forest near Meriden, Conn., revealed that five consecutive years of drought effectively ended the snakes' reproductive output. A long-term study of ...

In a process that some people call a "virgin birth," a Brazilian rainbow boa was born at the Phoenix Zoo with DNA from only one parent. Its mom, who has been at the zoo for 10 years, has never been ...