European perch
European perch

Fish on psychiatric drugs behave odd

New research conducted by Swedish researchers finds that anxiolytic drugs in surface waters alter animal behaviours that are known to have ecological and evolutionary consequences

Researchers from Umeå University in Sweden examined how perch behaved when exposed to oxazepam, a drug commonly used to treat anxiety disorders in humans.

The scientists exposed the fish to concentrations of the drug similar to those found in the waters near densely populated areas in Sweden.

How can physical barriers, such as isolation on a particular island, lead to the formation of new species through the process of natural selection?
How can physical barriers, such as isolation on a particular island, lead to the formation of new species through the process of natural selection?

How do new species of coral form in the ocean?

In a recent publication in the Proceedings of the National Academy of Sciences, or PNAS, Hellberg and his graduate student Carlos Prada investigate how corals specialize to particular environments in the ocean.

It is very well known that physical barriers and reproductive isolation can lead to the formation of new species on land, especially among plants and animals with short generation times such as insects and annual plants.

Dan Orr announces retirement

Dan Orr has been a diver for nearly 50 years and a dive professional for over 40 years.

Throughout the years, Orr has been involved in many facets of recreational, commercial, scientific and military diving.

He has worked and taught recreational diving in a retail store, developed and implemented course curricula in the university/academic environment, supervised research efforts in the field of scientific diving, tested diving equipment for military contractors and served on the boards of various nonprofit organizations.