Population density, human-crocodile conflict and genetic variation among saltwater crocodile, crocodylus porosus in Sarawak

The objective of this study aims to (i) determine the distribution and density of Crocodylus porosus in rivers of western Sarawak, (ii) assess socio-economic profile and matters related to human-crocodile conflicts within population of local peoples and (iii) analyze genetic variations of C. porosus...

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Main Author:	Mohd. Izwan Zulaini, Abdul Gani
Format:	Thesis
Language:	English
Published:	2014
Subjects:	QL Zoology
Online Access:	http://ir.unimas.my/id/eprint/9017/2/Mohd.%20Izwan.pdf
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id	my-unimas-ir.9017
record_format	uketd_dc
spelling	my-unimas-ir.90172023-03-28T07:36:39Z Population density, human-crocodile conflict and genetic variation among saltwater crocodile, crocodylus porosus in Sarawak 2014 Mohd. Izwan Zulaini, Abdul Gani QL Zoology The objective of this study aims to (i) determine the distribution and density of Crocodylus porosus in rivers of western Sarawak, (ii) assess socio-economic profile and matters related to human-crocodile conflicts within population of local peoples and (iii) analyze genetic variations of C. porosus in Sarawak based on microsatellite data. Surveys of C. porosus population had been carried out using night spotting techniques in Batang Samarahan, Sibu Laut River and Bako River. The highest mean relative density was recorded in Bako River (3.19±8.24 non-hatchling/km), followed by Sibu Laut River (0.77±0.51 non-hatchling/km) and Batang Samarahan (0.60±0.33 non-hatchling/km). Pilot study showed that dependency of local communities toward rivers and their awareness toward crocodile issues are relatively high. Based on microsatellite data using Cj127 primer, result showed limited success on determining the relationship among C. porosus from different areas in Sarawak. However using Cj16 primer, phylogenetic and network analysis showed distinct clades based on geographical areas. Population genetic analyses show gene flow occurs and high number of migrants per generations in population of C. porosus in Sarawak suggesting they are panmictic population. Universiti Malaysia Sarawak, (UNIMAS) 2014 Thesis http://ir.unimas.my/id/eprint/9017/ http://ir.unimas.my/id/eprint/9017/2/Mohd.%20Izwan.pdf text en validuser masters Universiti Malaysia Sarawak Faculty of Resource Science and Technology
institution	Universiti Malaysia Sarawak
collection	UNIMAS Institutional Repository
language	English
topic	QL Zoology
spellingShingle	QL Zoology Mohd. Izwan Zulaini, Abdul Gani Population density, human-crocodile conflict and genetic variation among saltwater crocodile, crocodylus porosus in Sarawak
description	The objective of this study aims to (i) determine the distribution and density of Crocodylus porosus in rivers of western Sarawak, (ii) assess socio-economic profile and matters related to human-crocodile conflicts within population of local peoples and (iii) analyze genetic variations of C. porosus in Sarawak based on microsatellite data. Surveys of C. porosus population had been carried out using night spotting techniques in Batang Samarahan, Sibu Laut River and Bako River. The highest mean relative density was recorded in Bako River (3.19±8.24 non-hatchling/km), followed by Sibu Laut River (0.77±0.51 non-hatchling/km) and Batang Samarahan (0.60±0.33 non-hatchling/km). Pilot study showed that dependency of local communities toward rivers and their awareness toward crocodile issues are relatively high. Based on microsatellite data using Cj127 primer, result showed limited success on determining the relationship among C. porosus from different areas in Sarawak. However using Cj16 primer, phylogenetic and network analysis showed distinct clades based on geographical areas. Population genetic analyses show gene flow occurs and high number of migrants per generations in population of C. porosus in Sarawak suggesting they are panmictic population.
format	Thesis
qualification_level	Master's degree
author	Mohd. Izwan Zulaini, Abdul Gani
author_facet	Mohd. Izwan Zulaini, Abdul Gani
author_sort	Mohd. Izwan Zulaini, Abdul Gani
title	Population density, human-crocodile conflict and genetic variation among saltwater crocodile, crocodylus porosus in Sarawak
title_short	Population density, human-crocodile conflict and genetic variation among saltwater crocodile, crocodylus porosus in Sarawak
title_full	Population density, human-crocodile conflict and genetic variation among saltwater crocodile, crocodylus porosus in Sarawak
title_fullStr	Population density, human-crocodile conflict and genetic variation among saltwater crocodile, crocodylus porosus in Sarawak
title_full_unstemmed	Population density, human-crocodile conflict and genetic variation among saltwater crocodile, crocodylus porosus in Sarawak
title_sort	population density, human-crocodile conflict and genetic variation among saltwater crocodile, crocodylus porosus in sarawak
granting_institution	Universiti Malaysia Sarawak
granting_department	Faculty of Resource Science and Technology
publishDate	2014
url	http://ir.unimas.my/id/eprint/9017/2/Mohd.%20Izwan.pdf
_version_	1783727996885008384

Population density, human-crocodile conflict and genetic variation among saltwater crocodile, crocodylus porosus in Sarawak

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