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Dominica announces new protections for sperm whales

Dominica has placed almost 800 square kilometers of sea off the west coast of the...
Commerson's dolphin

New Important Marine Mammal Areas added to global ocean conservation list

Commerson's dolphin Experts from a number of countries have mapped out a new set of...
Vaquita. Photo Thomas Jefferson

Scientific Committee gives first ever official species extinction warning

Photo: Thomas Jefferson We have welcomed the urgent call by experts to protect the vaquita...
blue whale

Whale fossil from Peru may have been heavier than blue whale

Scientists examining the bones of a 39 million-year-old ancient whale have concluded that it may...

Begging for food from fishermen may be harming dolphins

Researchers at Savannah State University in the US have concluded that dolphins foraging for fish stuck in or stirred up by the long, submerged nets of local shrimp trawlers are passing on this knowledge and behaviour to other dolphins in their group.

 

However, the research, published in PLOS ONE, also makes reference to the trawling activity having wider, negative impacts on the dolphins, dividing the wider group into those that do beg or forage for fish in the nets, and those that don’t. As well as the physical risks to half the group who do get close to these shrimp nets, there is also a risk that the whole population will split completely into two sub populations (those that beg and those that don’t) that then don’t mix, and so reducing rates of reproduction.

Recently, researchers used data spanning 45 years to illustrate how contact with human’s puts dolphins at risk as they become ‘conditioned’ very quickly, and that this can place the dolphins in harm’s way.