6 Works

Genetic structures across a biogeographical barrier reflect dispersal potential of four Southeast Asian mangrove plant species

Alison Wee, Annika Noreen, Junya Ono, Koji Takayama, Prakash Kumar, Hugh Tan, Mohd Saleh, Tadashi Kajita, Edward Webb, Alison K. S. Wee, Annika M. E. Noreen, Prakash P. Kumar, Hugh T. W. Tan, Mohd N. Saleh & Edward L. Webb
Aim Biogeographic barriers restrict the movement of individuals, resulting in population divergence, genetic differentiation, endemism and speciation. Yet, some barriers demonstrate unequal effect across species depending on species dispersal, which manifests in varying genetic structure. We test the hypotheses that the genetic structure of four coastal mangrove species would reflect differences in dispersal potential across the Malay Peninsula, a major biogeographic barrier in the Indo-West Pacific region. Location Twelve sites from the east and west...

Dispersive liquid-liquid microextraction with extractant removal by magnetic nanoparticles for chloramphenicol preconcentration in water samples

Noorfatimah Yahaya, , Nur Afiqah Aling, Mazidatulakmam Miskam, Mardiana Saaid, Nur Nadhirah Mohamad Zain, Sazlinda Kamaruzaman, Muggundha Raoov, Nor Suhaila Mohamad Hanapi & Wan Nazihah Wan Ibrahim
This work describes the development of a new methodology based on dispersive liquid-liquid microextraction with extractant removal by magnetic nanoparticles (DLLME-MNPs) for preconcentration and extraction of chloramphenicol (CAP) antibiotic residues in water. The approach is based on the use of decanoic acid as the extraction solvent followed by the application of MNPs to magnetically retrieve the extraction solvent containing the extracted CAP. The coated MNPs were then desorbed with methanol, and the clean extract was...

Habitat fragmentation and logging affects the occurrence of the lesser mouse deer in tropical forest reserves

Badrul Azhar
Due to rapid urbanization, logging, and agricultural expansion, forest fragmentation is negatively affecting native wildlife populations throughout the tropics. This study examined the effects of landscape and habitat characteristics on the lesser mouse deer, Tragulus kanchil, populations in Peninsular Malaysia. A total of 315 camera traps were deployed in eight forest reserves. This study provides critical ecological information for managing and conserving understudied populations of T. kanchil. We found that the detection of T. kanchil...

Higher mortality rates for large and medium-sized mammals on plantation roads compared to highways in Peninsular Malaysia

Badrul Azhar
The fragmentation of forests by agricultural expansion, urbanisation and road networks is a global phenomenon. In Southeast Asia, wildlife populations are being isolated into pockets of natural habitat surrounded by road networks and monoculture plantations. Mortality by wildlife-vehicle collisions (WVCs) is causing a decline in many species of conservation priority in human-modified landscapes. This study is the first in Malaysia to investigate factors affecting the occurrence of WVCs. We assessed roadkill data gathered by the...

Efficient removal of pharmaceuticals from water using graphene nanoplatelets as adsorbent

Fatin Ahza Rosli, Khairulazhar Jumbri, Abdul Halim Abdullah, Haslina Ahmad, Sazlinda Kamaruzaman & Nor Ain Fathihah Abdullah
Recently, pharmaceutical pollutants in water emerge as global concern as they give threat to human health and environment. In this study, graphene nanoplatelets (GNPs) were used to efficiently remove antibiotics sulfamethoxazole (SMX) and analgesic acetaminophen (ACM) as pharmaceutical pollutants from water by adsorption process. GNPs; C750, C300, M15, and M5 were characterized by high-resolution transmission electron microscopy, Raman spectroscopy, X-Ray diffraction and Brunauer-Emmett-Teller. The effects of several parameters; viz., solution pH, adsorbent amount, initial concentration...

Septicemia of Subterranean Termites Coptotermes curvignathus Caused by Disturbance of Bacteria Isolated from Termite Gut and Its Foraging Pathways

KIT LING CHIN, PAIK SAN H'NG, WAN ZHEN WONG, CHUAN LI LEE, PUI SAN KHOO, CHUAH LUQMAN LUQMAN, ZAIDON ASHAARI & SECA GANDASECA
Microbial pathogens continue to attract a great deal of attention to manage termite population. Every bacterium has its own mode of action and in fact, the mechanisms used by bacteria to attack termites remains elusive at the moment. Hence, the objective of this study was to evaluate the susceptibility of subterranean termites Coptotermes curvignathus to opportunistic pathogens using culturable aerobic bacteria isolated from the termite gut and its foraging pathways. Bacterial suspensions were prepared in...

Registration Year

  • 2020
    6

Resource Types

  • Dataset
    6

Affiliations

  • Universiti Putra Malaysia
    6
  • Hospital Universiti Sains Malaysia
    1
  • University of Washington
    1
  • Kyoto University of Advanced Science
    1
  • University of Malaya
    1
  • Chiba University
    1
  • National University of Singapore
    1
  • Guangxi University
    1
  • Kyoto University
    1
  • University of the Ryukyus
    1