Press Esc to close
Monday 25 July 2016
News updated at 9:23 PM IST
Weather
Max: 27.6°C
Min : 20.4°C
In Bengaluru
Sunny day

Biggest oil spill causes highest number of dolphin deaths

Washington, ,July 21,2012Agencies

The largest oil spill ever caused the highest number of dolphin deaths in the Gulf of Mexico, concludes a two-year scientific study.


Most troubling to scientists was the exceptionally high number of young dolphins that made up nearly half of the 186 dolphins that washed ashore from Louisiana to western Florida from January to April 2011.


The number of “perinatal” (near birth) dolphins stranded during this four-month period was six times higher than the average number of perinatal strandings in the region since 2003 and nearly double the historical percentage of all strandings.


“Unfortunately, it was a ‘perfect storm’ that led to the dolphin deaths,” said Graham Worthy, University of Central Florida, Orlando and professor of biology and study co-author, the journal Public Library of Science ONE reports.


“The oil spill and cold winter of 2010 had already put significant stress on their food resources, resulting in poor body condition and depressed immune response. It appears the high volumes of cold freshwater coming from snowmelt water that pushed through Mobile Bay and Mississippi Sound in 2011 was the final blow,” said Worthy, according to a Central Florida statement.


The cold winter of 2010 was followed by the historic BP Deepwater Horizon disaster in April 2010, which dumped millions of gallons of oil into the Gulf of Mexico, likely disrupting the food chain.


This was in the middle of the dolphins’ breeding† season. A sudden entry of high volumes of cold freshwater from Mobile Bay in 2011 imposed additional stress on the ecosystem and specifically on dolphins that were already in poor body condition. “When we put the pieces together, it appears that the dolphins were likely weakened by depleted food resources, bacteria, or other factors as a result of the 2010 cold winter or oil spill,” said Ruth Carmichael.


Go to Top

Photo Gallery
Legendary Santoor player Pandit Shivkumar Sharma being felicitated during an event...

Legendary Santoor player Pandit Shivkumar Sharma being felicitated during an event...

Members of the Indian archery team, the first to reach Brazil for the upcoming Olympics...

Members of the Indian archery team, the first to reach Brazil for the upcoming Olympics...

Kanwarias on their way to offer holy water to Lord Shiva on the occasion of holy month of Shravan...

Kanwarias on their way to offer holy water to Lord Shiva on the occasion of holy month of Shravan...

Actress Kajal Aggarwal receiving an award at 'Femina Power List South 2016'...

Actress Kajal Aggarwal receiving an award at 'Femina Power List South 2016'...

Coast Guard IG Rajan Bargotra briefing on the search operations of missing IAF AN-32 aircraft...

Coast Guard IG Rajan Bargotra briefing on the search operations of missing IAF AN-32 aircraft...

Mumbai crowned Premier Futsal champions in Mapusa...

Mumbai crowned Premier Futsal champions in Mapusa...

Chief of Army Staff, General Dalbir Singh paying homage to the martyrs of OP VIJAY...

Chief of Army Staff, General Dalbir Singh paying homage to the martyrs of OP VIJAY...

School studentsí celebrate Kargil Vijay Diwas in Jalandhar...

School studentsí celebrate Kargil Vijay Diwas in Jalandhar...

Forest officials patrolling in a boat on the flooded Kaziranga National Park on Monday...

Forest officials patrolling in a boat on the flooded Kaziranga National Park on Monday...

KSRTC buses were parked on following the State Transport Unions strike...

KSRTC buses were parked on following the State Transport Unions strike...

Copyright 2014, The Printers (Mysore) Private Ltd., 75, M.G Road, Post Box 5331, Bengaluru - 560001
Tel: +91 (80) 25880000 Fax No. +91 (80) 25880523