Officials puzzle over 100s of dead dolphins

2014-02-04 09:30
Institute for Marine Mammal Studies veterinary technician Wendy Hatchett lifts a dead bottlenose dolphin that was found on Ono Island, Alabama. (Patrick Semansky, AP, file)

Institute for Marine Mammal Studies veterinary technician Wendy Hatchett lifts a dead bottlenose dolphin that was found on Ono Island, Alabama. (Patrick Semansky, AP, file)

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Lima - More than 400 dead dolphins were found in January on the Pacific Ocean beaches of northern Peru where twice that amount were encountered in 2012, officials said on Monday.

Authorities never established the cause of the deaths in 2012. They are doing autopsies on the latest dolphins found in the Lambayeque region on the northern coast.

Technician Jaime de la Cruz of Peru's Imarpe marine life agency said about 220 dead dolphins were found in the last week of January, the rest during the previous three weeks.

De la Cruz said autopsy results are expected in two weeks. Exams will focus on lungs, kidneys and livers.

Autopsies of some of the more than 870 dolphins found in 2012 were inconclusive. Speculation ranged from biotoxins in the sea to seismic testing to an unknown ailment.

Yuri Hooker, director of the marine biology unit at Cayetano Heredia University, said that in other parts of the world dolphin deaths generally are caused by environmental contamination when the sea mammals eat fish or other smaller species filled with toxins. Hooker said others die after ingesting discarded plastic floating in the sea.

The marine biologist said determining the death of dolphins is "complicated" in Peru because government laboratories have only three or four of the world's 100 or so chemical reagents that can be used for determining the animals' cause of death.
Read more on:    marine life

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