Male chimpanzees choose their allies carefully
Study finds male chimpanzees may increase their chances of siring offspring by recognizing the importance of third-party relationships.
Plants & Animals
Dec 3, 2012
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Page 9 - News tagged with male reproduction
Are elder siblings helpers or competitors?
Having elder siblings decreases mortality risk in childhood, but same-sex elder siblings are associated with lower marriage rates and fewer children for their younger siblings in adulthood, according to the results of a long-term ...
Social Sciences
Nov 22, 2012
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Male competition over females: An evolutionary engine of genital evolution
When a female mates with several males, these will compete over the fertilization her eggs. This is an important evolutionary force that has led to the evolution of a diversity of male sexual organ morphologies. This is revealed ...
Plants & Animals
Oct 25, 2012
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Single spider dads caring for eggs suffer no disadvantages despite parenting costs
Single fatherhood is a challenge many arachnids undertake, guarding eggs laid by females despite the costs to their own health and mating benefits, but the news may not be all bad for these dads.
Plants & Animals
Oct 10, 2012
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The scent of love: Decomposition and male sex pheromones
Young virgin female hide beetles (Dermestes maculatus) are attracted to cadavers by a combination of cadaver odour and male sex pheromones, finds a new study published in BioMed Central's open access journal Frontiers in ...
Plants & Animals
Aug 13, 2012
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You snooze, you lose: Less sleep leads to more offspring in male pectoral sandpipers
During the breeding season, polygynous male pectoral sandpipers that sleep the least sire the most young. A team of researchers headed by Bart Kempenaers from the Max Planck Institute for Ornithology in Seewiesen has now ...
Plants & Animals
Aug 9, 2012
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Study of fruit fly chromosomes improves understanding of evolution, fertility
(Phys.org) -- The propagation of every animal on the planet is the result of sexual activity between males and females of a given species. But how did things get this way? Why two sexes instead of one? Why are sperm necessary ...
Biotechnology
Aug 9, 2012
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Building blocks of life came from deep Earth
The rise of the first complex life depended on vital metals brought up to the Earth's surface from far below in vast granite deposits, a new study argues.
Earth Sciences
Aug 7, 2012
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Promiscuous squid fatigued after mating: study
(Phys.org) -- In order to pass on their genes, southern dumpling squid engage in up to three hours of mating with each partner, but University of Melbourne researchers have found that this results in a reduced ability to ...
Plants & Animals
Jul 18, 2012
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Better looking birds have more help at home with their chicks
In choosing a mate both males and females rely on visual cues to determine which potential partner will supply the best genes, best nesting site, best territory, and best parenting skills. New research published in BioMed ...
Plants & Animals
Jun 25, 2012
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