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Observations on mass nesting of the olive ridley Lepidochelys olivacea at Gahirmatha, Orissa during the 1987 season

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Relation http://eprints.cmfri.org.in/816/
 
Title Observations on mass nesting of the olive ridley Lepidochelys olivacea at Gahirmatha, Orissa during the 1987 season
 
Creator James, P S B R
Rajagopalan, M
Dan, S S
Fernando, A Bastian
Selvaraj, V
 
Subject Marine Turtle
 
Description Observations made during the' arribadas' or mass nesting of the Olive ridley Lepidochelys olivacea
during 1987 at Gahirmatha rookery, Orissa are reported. The first mass nesting occurred in a stretch
of 5.7 km from 5th to 14th January and two lakhs turtles nested. During the second mass nesting
in a stretch of 4.5 km from 5th to 14th March four lakhs turtles nested. Hatchlings of first mass nesting
batch emerged after 60 days of incubation in March 1987 and the percentage of live hatchlings
emerged from the natural nests varied from 63.25 to 98.66 (87.72). The mean carapace length in mm
from 20 clutches examined varied from 40.2 to 42.8 and carapace width varied from 32.7 to 34.5. The
mean weight in gm of the hatchlings varied from 14.75 to 19.10. Tlie emergence of hatchlings of
second mass nesting noticed after an interval of 50 days in May 1987 and the mean percentage of live
hatchlings emerged varied from 17.95 to 90.38 (54.34). The mean carapace length in mm from 65
clutches examined varied from 36.48 to 42.85 and the carapace width varied from 27.69 to 34.06. Tlie
mean weight of hatchlings in gm varied from 13.6 to 18.6 gm. The hatdJing success of first and
Second mass nesting occurred in 1987 at Gahirmatha was compared and the high percentage of spoilt
and unfertilized eggs and dead hatchlings was observed in second mass nesting batch.
 
Publisher MBAI
 
Date 1991
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
Identifier http://eprints.cmfri.org.in/816/1/James__69-75.pdf
James, P S B R and Rajagopalan, M and Dan, S S and Fernando, A Bastian and Selvaraj, V (1991) Observations on mass nesting of the olive ridley Lepidochelys olivacea at Gahirmatha, Orissa during the 1987 season. Journal of the Marine Biological Association of India, 33 (1&2). pp. 69-75.