Seals give birth only when conditions are right. After mating, a female seal can delay implantation of the embryo in the ...

Female tammar wallabies are rarely, if ever, truly alone. Their pregnancies last almost exactly 12 months—and within hours of giving birth, most of the marsupials can be found mating again, conceiving ...

Recent advancements in reproductive health research are opening up new possibilities for improving the success of fertility treatments, particularly in in-vitro fertilisation (IVF). One such ...

Five nominal species of braconid wasps that parasitize nymphs of five mirid species were studied on farms. The biological data obtained indicate that Peristenus pallipes (Curtis) is likely two (and ...

Flesh flies (Sarcophagidae) collected in Costa Rica and Panama lack the pupal diapause that is characteristic of flesh flies from the temperate zone and tropical Africa. The absence of a diapause ...

To work out which nutrients were important to induce diapause, the researchers grew early-stage mouse embryos in dishes that contained different nutrients. They found that embryos grown in dishes ...

Monarch butterflies (Danaus plexippus) have long been known for their impressive migration abilities, with North American species traveling around 3,000 miles from the United States and Canada into ...

To be honest, I wasn’t sure I was. But Andrew Forbes, an Ottawa-born writer who now lives in Peterborough, Ont., had, during the pandemic, become one of my favourite authors. His two collections of ...