2010 - Department of Wildlife and National Parks

PENYELIDIKAN
RESEARCH
109
Kajian Populasi Ular Sawa (Python reticulatus)
Population Study of Reticulated Python (Python reticulatus)
Kajian ini telah dijalankan serentak dan di kawasan yang sama dengan kajian populasi Biawak Air. Kaedah yang
digunakan juga adalah tangkap-tanda-lepas dan tangkap semula di mana ukuran morfologi setiap individu yang
ditangkap direkodkan. Daerah Sabak Bernam, Selangor merekodkan tangkapan di kawasan hutan sebanyak
tiga ekor (1:2) dan seekor (0:1) di kawasan ladang kelapa sawit. Daerah Setiu pula merekodkan tangkapan di
kawasan hutan (0:1) dan ladang kelapa sawit (0:1) manakala tiada sebarang tangkapan direkodkan di daerah
Kerian, Perak.
This study was conducted simultaneously with the monitor lizard population study in the same area. Catch-markrelease
and recapture were used as sampling methods whereby morphological measurements for each individual
were recorded. Sabak Bernam in Selangor recorded a total of 3 individuals (1:2) captured within forested areas
and one capture was recorded (0:1) in oil palm plantation. Setiu in Terengganu recorded an individual (0:1) from
forested areas and another individual (0:1) from palm oil plantations. There was no recorded capture from Kerian,
Perak.
Kajian Populasi Biawak Air (Varanus salvator)
Population Study of Monitor Lizard (Varanus salvator)
Kajian populasi Biawak Air telah dijalankan di daerah Sabak Bernam, Selangor; Setiu, Terengganu dan Kerian,
Perak untuk mengenalpasti anggaran saiz populasi spesies ini mengikut jenis habitat. Kajian ini juga dijalankan
untuk mengenalpasti tahap ancaman pemburuan terhadap populasi spesies ini dan mengumpul sampel DNA
individu Biawak Air dari populasi liar untuk rujukan perbankan genetik Jabatan PERHILITAN. Persampelan
di lapangan melibatkan kawasan pinggir hutan, ladang kelapa sawit, paya bakau dan sawah padi. Kaedah
tangkap-tanda-lepas dan tangkap semula telah digunakan dalam kajian ini. Setiap individu Biawak Air yang
berjaya ditangkap dipasangkan mikrocip untuk kajian jangka panjang. Ukuran morfologi turut direkodkan untuk
mengenalpasti demografi asas populasi yang dikaji. Secara keseluruhannya, anggaran saiz populasi paling
tinggi direkodkan di kawasan paya bakau, diikuti kawasan ladang kelapa sawit, sawah padi dan pinggir hutan.
Purata nisbah jantina pula ialah 1:1. Populasi yang diburu secara intensif di Sabak Bernam didominasi individu
bersaiz kurang daripada 4 kg manakala di Setiu dan Kerian, kedua-duanya didominasi individu bersaiz lebih
besar.
A population study on Monitor Lizard was carried out at Sabak Bernam, Selangor; Setiu, Terengganu and Kerian,
Perak in order to estimate their population size according to habitat type. The objective was also to determine
the level of threats from licensed hunting as well as to collect Monitor Lizard DNA samples from the wild for the
Department’s genetic resource bank. Sampling exercises were carried out in forest fringes, palm oil plantations,
mangrove forests and paddy fields. Catch-mark-release and recapture were used as sampling methods. Every
individual captured was marked and micro chipped for long term studies. Morphological characteristics were also
recorded to assess basic demography of the population studied. Highest estimated population size was recorded
at mangrove forests, followed by palm oil plantations, paddy fields and forest fringes while sex ratio estimated at
1:1. The intensively hunted population in Sabak Bernam was dominated by small individuals of less than 4 kg
while in Setiu and Kerian, both was dominated by larger individuals.
ANNUAL REPORT 2010 DWNP