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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.

Conditions at the Cayman Turtle Farm make it impossible for the turtles to express their natural behaviour and can lead to disease, injury and even cannibalism.

Tanya Streeter speaks out against Cayman Turtle Farm

The World Society for the Protection of Animals WSPAhas handed in a petition with 144,000 signatures to the Cayman government

Information obtained by WSPA and a recent report into the conditions at the Cayman Turtle Farm (CTF) has confirmed that animal suffering is a major problem at the facility which is the most popular tourist attraction in the Cayman Islands.

CTF is currently housing around 7,000 endangered sea turtles in cramped, unhealthy and diseased conditions

A research study is being conducted into the personality traits and behaviour of male cave divers and research subjects are required.
A research study is being conducted into the personality traits and behaviour of male cave divers and research subjects are required.

Calling all male cave divers

A research study is being conducted into the personality traits and behaviour of male cave divers and research subjects are required.

Please pass this information on to relevant friends, peers and colleagues.

Australian researchers found that the embryos could identify electric fields simulating a nearby predator, despite being confined to a tiny egg case.
Australian researchers found that the embryos could identify electric fields simulating a nearby predator, despite being confined to a tiny egg case.

Embryonic sharks play dead to evade predators

Brown-banded bamboo sharks can sense electrical fields even before they've hatched from their egg cases.

Despite being confined to the small space within the egg case, where they are vulnerable to predators, embryonic sharks are able to recognise dangerous stimuli and react with an innate avoidance response.

Normally, an embryo pulses its gills actively. But when researchers turned on electrodes to produce an electric field near the egg cases, the unhatched sharks froze and stilled their gills for several seconds.

Why is Scientific Diving Safer?

Scientific diving appears to be one of the safer forms of diving, a recent study of incidences of decompression illness over ten years has found. This safety seems to be facilitated by a combination of relatively high levels of training and oversight, the predominance of shallow, no-decompression diving and, possibly, low peer or institutional pressure to complete dives under less than optimal circumstances.