How Odynerus Suspends Her Egg

His Hormone, Her Oogenesis: How Male Malaria Mosquitoes Trigger Female Egg Development

A female mosquito needs two things to reproduce: your blood and a visit from a male mosquito. The blood provides the nutrient-rich meal she will use to feed her developing eggs. The male provides not only sperm, but also a complex mix of proteins and other molecules, secreted from the so-called male accessory glands (MAGs) and deposited along with the sperm during mating. The secretions form a ...

How Detroit Cares for Her Backward Children

In Detroit a systematic plan has been worked out which has been in effective operation for the past two years, and is well worth consideration. Special education for backward children has been carried on in Detroit for the past ten years. Work was begun in 1901, with the opening of one room, and since that time, eight additional rooms have been opened. From the beginning, it was found that a gr...

How precise is egg discrimination in weaverbirds?

The village weaverbird, Ploceus cucullatus, lays eggs of an extremely broad range of appearance between individuals. This variation is thought to have evolved as a counteradaptation to brood parasitism by the diederik cuckoo Chrysococcyx caprius. The primary objective of our study was to characterize the relationship between egg appearance and egg rejection in the African village weaverbird. We...

How Partner Support of an Adolescent Affects Her Pregnancy Outcome

To investigate any connection between partner support and pregnancy outcome, self administered questionnaires were given to the first thirty women of child bearing age that came in to the office of their family doctor on a particular day. If the partner is present and not supportive the miscarriage rate is more than double and the abortion rate four times greater than if the partner is present ...

How Does a Mom's Nutrition Affect Her Children's Health?