Tuesdays with Turtles – Hatcheries

A little old, but turns out that the WWF is establishing a hatchery for Olive Ridley sea turtles in Orissa.

WWF-India comes with artificial hatchery for Olive Ridley eggs – Newindpress.com

Large-scale destruction of Olive Ridley eggs at nesting sites in the State’s coast has prompted WWF-India to come with an artificial hatchery. It would also double up as a hatching protection centre. The artificial hatchery has been established near mouth of Rushikulya river where WWF-India staff have stored a large number of Olive Ridley eggs along with the arrangements for safe hatching. Last month alone, 116 nests were safeguarded and around 13,000 Olive Ridley eggs were stored in the artificial hatchery. Till end of the week, more than 2,000 eggs have hatched, chairman of WWF-India, Orissa State Committee Saroj Kumar Patnaik said.

Hatcheries become necessary when the natural habitat can no longer be protected. The biggest advantage of a hatchery is the fact that once the eggs are relocated, they are now safe from poaching/predation. But, there are some disadvantages including the resources needed, the possible overcrowding effects if the hatcheries are not well designed, etc. Luckily, there are good resources available for building and managing a good hatchery. With the WWF’s funding and experience, I am sure it will be a very well managed hatchery.

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  • Casuarina plantations and the Olive Ridley

    The Students’ Sea Turtle Conservation Network was featured in the Hindu today.

    Sea turtle lovers are concerned at the disturbance caused to turtle nesting habitats along the Tamil Nadu coastline, where casuarinas have been raised by the State Forest Department.The sea turtle’s egg-laying season began a month ago. Volunteers of the Chennai-based Students’ Sea Turtle Conservation Network (SSTCN) had written to the World Bank stating that the Forest Department should reverse the damage done.The SSTCN also wanted the Bank to provide funds for taking up transplantation work.Akila Balu, co-ordinator, SSTCN, said after the tsunami, the World Bank funded an Emergency Tsunami Reconstruction Project (ETRP) in Tamil Nadu.Under this programme, the State Forest Department had taken up the work of raising casuarina plantations to act as a bio-shield on the coastline. The casuarina saplings were planted right up to the high-tide line. In the process, it eliminated large stretches of sea turtle nesting habitat.Department’s defenceA senior Forest Department official said casuarinas had not been raised all along the State coastline.Adequate space had been provided between each sapling through which the turtles could enter the sand and lay eggs.The ETRP is a conservation-oriented programme, and so far the department has not received any complaints that the casuarina plantation had affected egg-laying of the Olive Ridleys, the official said.“In most of the areas, the saplings are not touching the high-tide line. If we plant closer to the line, the saplings will not survive. On the whole, the plantation will surely not affect the egg-laying turtles,” the official added.

    The Hindu : Tamil Nadu / Chennai News : “Casuarina plantations affecting turtle nesting habitats”

    To find out more, visit the SSTCN website.

    cross-posted at the Students’ Sea Turtle Conservation Network

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  • Now we know where Juvenile sea turtles Hide

    You see the hatchlings as they dig out of the nests all small and helpless and make a beeline towards the sea. You see the adult female as she comes back to lay her eggs. You see adult males when you go snorkeling , but the juveniles had kept a low profile, until now…

    Sea turtles’ mystery hideout revealed – LiveScience – MSNBC.com

    Once sea-turtle hatchlings hit the surf, they vanish for up to five years. Where the half-dollar-size tots spend these ‘lost years’ while ballooning to the size of dinner plates has been a mystery, until now.

    New research, published in the online edition of the journal Biology Letters, indicates the green sea turtles (Chelonia mydas) hide out in the open ocean, where they feast on jellyfish and other marine creatures.

    Turns out that they’ve been “hiding out” in the open ocean eating meat to augment their vegetarian adult diet. I have not seen the paper (reference below), but the study was based on an analysis of their shell content. Carbon and Nitrogen isotope analysis was used as a marker for diet and location.

    The ‘lost years’ of green turtles: using stable isotopes to study cryptic lifestages

    Kimberly J. Reich, Karen A. Bjorndal, Alan B. Bolten

    Archie Carr Center for Sea Turtle Research, Department of Zoology, PO Box 118525, University of Florida, Gainesville, FL 32611, USA

  • Tuesdays with Turtles – Gahirmatha Arrribada Hatchings

    In case I forgot to mention, the Olive Ridley arribada started during the 2nd week of February, so about 50 days later, here they are, the “millions” of hatchlings.

    The Hindu News Update Service

    Olive Ridley hatchlings emerge in Gahirmatha

    Kendrapara (Orissa), April 10. (PTI): Millions of tiny olive ridley sea turtle hatchlings are now emerging out of nests at the Gahirmatha beach in Orissa’s Kendrapara district, wildlife officials said on Monday.

    The eggs laid by thousands of adult females in the Nasi-2 and Babubali islands in the Gahirmatha marine sanctuary have began to hatch over the last two days, they said.

    Wildlife officials stationed at the nesting grounds were witness to the phenomenon, but tourists and researchers were not allowed into the unmanned territory close to the Wheeler’s island where a defence test range is located.

    India’s intermediate range nuclear-capable missile Agni III is likely to be test fired from there some time this week, defence sources said.

    You know what, the fact that this area is under close military supervision because of India’s grandiose missile dreams may not be sucha bad thing (sacrilege!!!). The area is under so much development pressure that even military operations are better than the alternative.

    For more about the Gahirmatha area, visit the official website. At this point in time, the Arribada is very tourist unfriendly, and there are few, if any volunteering opportunities. I will keep any eye open for changes

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  • Bonus Turtle Coverage – The Great Turtle Race

    Great Turtle Race

    Follow eleven turtles as they sprint from Costa Rica to near the Galapagos. Each of them has a corporate sponsor, and at 20 miles an hour, they will get there in a couple of weeks! I think Billie’s going to win, but the leatherback turtle is in bad shape, endangered due to poaching, adult mortality and habitat loss. They may be gone very soon.

    Here’s the flickr page for the race, some beautiful pictures already.

  • 100s of turtles die in Andhra Pradesh

      I have written about turtle excluder devices (TEDs) and how they save adult turtles lives previously. So, this story is an utterly avoidable tragedy brought about by the lack of implementation of laws regulating the use of TEDs.

    The death of hundreds of Olive Ridley turtles along the Paravada coast in December 2007 had occurred due to failure of the trawlers to install the mandatory turtle excluder device. Lab tests conducted at Andhra University and Veterinary Biological Research Institute, Hyderabad ruled out the largescale death of the endangered species due to consumption of toxic contents discharged by industries located nearby or on account of rise in the seawater temperature.“We didn’t find any abnormal pollution levels. The washing ashore of carcasses was not a localised phenomena as dead turtles were found all along the coast up to Srikakulam during the year-end – the breeding season,” P.J. Vijaykar, Divisional Forest Officer told The Hindu on Wednesday.

    The Hindu : Andhra Pradesh / Visakhapatnam News : Olive Ridley death riddle solved

    Andhra Pradesh was supposed to be a success story with the TEDs. This from an article by Kartik Shanker, one of SSTCN’s founding members…

    In India, the parallel cases of Orissa and Andhra Pradesh demonstrate how a TED programme should not (and should) be implemented. In Orissa, the polarization between the fishing community and conservationists has prevented the introduction of TEDs, while in Andhra Pradesh, TEDs were introduced by the state Fisheries Department with appropriate demonstration and training programmes (see Shanker and Pilcher, 2003).

    So, this occurrence in Andhra Pradesh is quite disheartening and speaks to the large gaps that lie between legislation, policy and implementation in India.

    Cross Posted at SSTCN

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  • The Olive Ridley Arrives in BC

    No, not me, the sea turtle! When this blog migrated to BC in 2008, it surely didn’t expect the sea turtle it was named after to follow suit, but here we are…

    A species of sea turtle never before seen in B.C. waters arrived on Wickaninnish Beach this week.

    Parks Canada, the Department of Fisheries and Oceans, and the Vancouver Aquarium worked together to confirm the event as the first-ever sighting of an olive ridley sea turtle in B.C. waters.

    “B.C. residents can be proud to learn that we now officially have three sea turtle species in our waters,” stated a media release from the three organizations involved.

    via Sea turtle found in Pacific Rim park.

    I would quibble with “never before seen”, this is highly unlikely in the many years Canada’s indigenous have made their home on the ocean, and given that turtles tend to stray. It appears this female arrived nearly dead, and died of possible blunt force trauma, which can be caused by many things including propeller hits, boat collisions, etc. Also found, large bits of plastic inside her stomach, which is all too common.

    So, farewell, dear friend, you strayed a bit too far north for your tastes, not as far as Alaska, but far enough.