BlogArena

General blog about anything and everything of everyday's life.

21. Nov 2019

August 10, 2014
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Invertebrate numbers nearly halve as human population doubles

Invertebrate numbers have decreased by 45% on average over a 35 year period in which the human population doubled, reports a study on the impact of humans on declining animal numbers.  This decline matters because of the enormous benefits invertebrates … Continue reading

July 2, 2013
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Boat noise stops fish finding home

Boat noise disrupts orientation behaviour in larval coral reef fish, according to new research from the Universities of Exeter, Bristol and Liège. Reef fish are normally attracted by reef sound but the study, conducted in French Polynesia, found that fish … Continue reading

February 6, 2012
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A Bug’s (Sex) Life: Diving Beetles Offer Clues About Sexual Selection

*Studies of diving beetles suggest sperm evolution may be driven by changes in female reproductive organs, challenging the paradigm of post-mating sexual selection being driven mostly by competition among sperm.* Studying female reproductive tracts and sperm in diving beetles (Dytiscidae), … Continue reading