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Reproductive investment and optimum clutch size of Loggerhead Sea Turtles (Caretta caretta)

Hays, Graeme C. and Speakman, John R. 1991, Reproductive investment and optimum clutch size of Loggerhead Sea Turtles (Caretta caretta), Journal of animal ecology, vol. 60, no. 2, pp. 455-462.

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Title Reproductive investment and optimum clutch size of Loggerhead Sea Turtles (Caretta caretta)
Author(s) Hays, Graeme C.ORCID iD for Hays, Graeme C. orcid.org/0000-0002-3314-8189
Speakman, John R.
Journal name Journal of animal ecology
Volume number 60
Issue number 2
Start page 455
End page 462
Total pages 8
Publisher Wiley
Place of publication London, England
Publication date 1991-06
ISSN 0021-8790
1365-2656
Summary (1) Data for loggerhead turtles (Caretta caretta L.) nesting on the Greek island of Cephalonia were used to develop a model which predicted the optimum clutch size. (2) There was a positive linear relationship between the number of clutches into which eggs could be divided and the total time spent by a nesting turtle on the beach, and hence a negative relationship between the time invested on the beach per egg and clutch size. (3) A previous study indicated that energy expenditure for nesting turtles on land is very high, so there may be a selective pressure to maximize clutch size in order to minimize the energy expended per egg laid. As there appeared to be no counterselective pressures favouring small clutches, clutch size should be constrained by a female's egg-carryingc apacity,w hich in turn could be expected to be related to her body size. Hence, a positive relationship between clutch size and body size was predicted, and was found in the population under study.
Language eng
Field of Research 069999 Biological Sciences not elsewhere classified
Socio Economic Objective 970106 Expanding Knowledge in the Biological Sciences
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©1991, Wiley
Persistent URL http://hdl.handle.net/10536/DRO/DU:30058302

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