Spiders: Chastity belts stop cuckoos in the nest

User rating: 3.9 / 5 after 8 vote(s)

Image: (c) Frank Luerweg
Image: (c) Frank Luerweg

The fact that female wasp spiders have numerous sexual contacts is something which their male partners cannot prevent. What they can do, however, is ensure that no offspring ensue from these tête à têtes with their rivals: the male spiders simply place a chastity belt on their partner while copulating. The tip of their genital breaks off during intercourse, blocking the sexual orifice of the lady spider.


Full story »
All News summaries from General Science news
All News summaries for March 05, 2007

Study explores plausibility of bulbs and tubers in the diet of early human ancestors

7 hours ago | User rating: not rated yet
(PhysOrg.com) -- It was a dirty job, but somebody had to do it. Anthropologist Nathaniel J. Dominy of the University of California, Santa Cruz, has advanced the investigation of the diet of early human ancestors ...

Wealth Does Not Dictate Concern for the Environment

7 hours ago | User rating: not rated yet
It has been a long-held assumption that poor nations will not support efforts to protect the environment since their citizens are too preoccupied with meeting basic needs, such as food and housing. However, a new study in ...

Construction workers unearth mammoth bones in Minsk

7 hours ago | User rating: not rated yet
Workers building a business centre in Minsk came across the bones of two mammoths thought to be between 25,000 and 45,000 years old, an official from Belarus' Academy of Sciences told AFP on Friday.

Women's access to credit affects efficiency in rural households

8 hours ago | User rating: not rated yet
Rural strategies designed to induce economic growth often emphasize the need to improve access to capital for poor households. However, this approach implicitly assumes that family members pool all their resources and allocate ...

Colonial heritage metaphors used in US military conflicts

8 hours ago | User rating: not rated yet
The historical reference to "Indian Country" presents a complex metaphor. For many Native Americans it signifies home, family, and territory; however, for others the term can refer to colonialism and Native American land ...
Goto Archive PhysOrg Forum Goto Archive Video Goto Archive Editorials Goto Archive Free Magazines Goto Archive Newsletter

News Archive