Abstract
The nesting of green turtle (Chelonia mydas) was monitored from 1998 untill 2013 along the beaches of Pasir Panjang, Segari, Perak. The objective of the study is to assess the nesting status of green turtles in Perak, Peninsular Malaysia in terms of total nests, eggs, survival hatchings, and density of visitors. A total number of green turtle nests found for 16 years were 1,019 nests and varied from 10 to 220 nests per year. Meanwhile, the sum of eggs collected for 16 years were 107,820 eggs, and varied from 553 to 20,881 eggs per year. The temporal pattern of nesting indicates year-round nesting in Perak in most years within the 16 years period. The peak season of nesting was estimated to occur between May and June. Survival hatchlings varied from 23.33% (2,071 hatchlings) to 55.03% (5,018 hatchlings) from 1998 to 2013. The density of visitors was not uniformly distributed among the years, and shows a sign of decline especially from 2006 onwards. This publication provides basic knowledge of green turtle nesting population in Perak, and would be helpful in upgrading the conservation program in Malaysia. In future, we hope 1) for an increase in manpower to obtain accurate nesting records along the nesting beaches during nocturnal survey and, 2) to include the breeding biology data such as nest placement, emergence hour, and morphological characteristics of green turtle.
Highlights
In Malaysia, the green turtle is widely distributed, with the prominent nesting population being in Sabah, Sarawak, and Terengganu
It was previously mentioned that only the green and olive ridley species can be found in Perak state (Pusat Pengurusan Penyu, Segari, Perak Darul Ridzuan 2007), which is similar to the adjacent state, Penang Island
The objective of the study is to assess the nesting status of the green turtle in Perak, Peninsular Malaysia in terms of nests, eggs, survival hatchings and density of visitors
Summary
In Malaysia, the green turtle is widely distributed, with the prominent nesting population being in Sabah ( at Turtle Islands Park), Sarawak ( at Talang Satang National Park), and Terengganu ( at Redang Island and Setiu). On the west coast of Peninsular Malaysia, there are three highlighted marine turtle nesting beaches facing the Straits of Malacca; these are Penang Island, Perak, and Melaka. The green turtle majorly resides in Penang Island ( in Kerachut and Teluk Kampi; Sarahaizad et al 2012a) and Perak (Pantai Remis; Chan 2006) with minor landing of olive ridley. In comparing to the other nesting sites in Malaysia, the population status of marine turtle was stated in terms of nesting per years, and published by Mortimer et al 1993 (Melaka), Setiu, Terengganu (Aini Hasanah et al 2014), Redang Island (Chan 2010), Penang Island (Sarahaizad et al 2012a), Sabah (Chan et al 1999) and Sarawak (Leh 1994).
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