Reproductive seasonality and environmental effects in green turtle (Chelonia mydas) nesting at Penang Island, Malaysia

Mohd-Salleh, Sarahaizad and Nishizawa, Hideaki and Mohd Sah, Shahrul Anuar and Khan Chowdhury, Ahmed Jalal (2020) Reproductive seasonality and environmental effects in green turtle (Chelonia mydas) nesting at Penang Island, Malaysia. Journal of the Marine Biological Association of the United Kingdom, 100 (4). pp. 645-650. ISSN 0025-3154 E-ISSN 1469-7769

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Abstract

For species with environmental sex determination, understanding the relationship between reproduction and environmental factors is important for predicting their reproductive output. Here, we study intra-annual variation in green turtle nesting during the 2010-2016 seasons at Penang Island (5°16′28″-5°28′15″N 100°10′52″-100°11′55″E), Malaysia. The additive modelling on a monthly-basis number of nests shows that fluctuation in the number of nests relates to temperature in addition to month of year, rather than precipitation. The number of nests tended to be higher in response to higher temperature during March-July, whereas the lower temperature during August-February also tended to result in a relatively higher number of nests. Concentration of nests during March-July resulted from a shorter inter-nesting interval during warm temperatures, whereas relatively low temperatures may homogenize the temporal distribution of the number of nests. This study provides fundamental information for green turtle nesting seasonality in response to environmental change.

Item Type:	Article (Journal)
Additional Information:	3575/82696
Uncontrolled Keywords:	Additive modelling, precipitation, sea turtle, seasonality, temperature
Subjects:	Q Science > Q Science (General)
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Science Kulliyyah of Science > Department of Marine Science
Depositing User:	Professor Ahmed Jalal Khan Chowdhury
Date Deposited:	07 Sep 2020 15:08
Last Modified:	07 Sep 2020 15:57
URI:	http://irep.iium.edu.my/id/eprint/82696

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