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Displaying publications 1 - 20 of 27 in total

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Fulltext Global Protected Areas as refuges for amphibians and reptiles under climate change

Mi C, Ma L, Yang M, Li X, Meiri S, Roll U, et al.

Nat Commun, 2023 Mar 13;14(1):1389.
PMID: 36914628 DOI: 10.1038/s41467-023-36987-y

Protected Areas (PAs) are the cornerstone of biodiversity conservation. Here, we collated distributional data for >14,000 (~70% of) species of amphibians and reptiles (herpetofauna) to perform a global assessment of the conservation effectiveness of PAs using species distribution models. Our analyses reveal that >91% of herpetofauna species are currently distributed in PAs, and that this proportion will remain unaltered under future climate change. Indeed, loss of species' distributional ranges will be lower inside PAs than outside them. Therefore, the proportion of effectively protected species is predicted to increase. However, over 7.8% of species currently occur outside PAs, and large spatial conservation gaps remain, mainly across tropical and subtropical moist broadleaf forests, and across non-high-income countries. We also predict that more than 300 amphibian and 500 reptile species may go extinct under climate change over the course of the ongoing century. Our study highlights the importance of PAs in providing herpetofauna with refuge from climate change, and suggests ways to optimize PAs to better conserve biodiversity worldwide.

Matched MeSH terms: Reptiles
Fulltext Economics, life history and international trade data for seven turtle species in Indonesian and Malaysian farms

Andersen SK, Staerk J, Kalhor E, Natusch DJD, da Silva R, Pfau B, et al.

Data Brief, 2021 Feb;34:106708.
PMID: 33506080 DOI: 10.1016/j.dib.2020.106708

We collected data on the trade of seven turtle and tortoise species endemic to Indonesia and Malaysia (Amyda cartilaginea, Batagur borneoensis, Cuora amboinensis, Carettochelys insculpta, Heosemys annandalii, Heosemys grandis, and Heosemys spinosa). The data on those species included: operations costs of three breeding farms and one export facility; species life-history traits; and species international legal trade and confiscation data. We collected data for the facilities (one in Malaysia and three in Indonesia) using site visits and a semi-structured questionnaire. We conducted a literature review to compile relevant information on species' life-history traits to estimate breeding viability. We downloaded species-specific data on international trade from the Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES) Trade Database for the exporting countries (Malaysia and Indonesia) for 2000-2015. We compared legal trade with confiscation data obtained from CITES. The data in this article can provide insights into the operations of turtle breeding farms in Southeast Asia. These data can be used as a reference for the inspection of breeding farms and for legislative bodies to determine whether captive breeding for select turtle species is feasible.

Matched MeSH terms: Reptiles
Fulltext Plasmodium-a brief introduction to the parasites causing human malaria and their basic biology

Sato S

J Physiol Anthropol, 2021 Jan 07;40(1):1.
PMID: 33413683 DOI: 10.1186/s40101-020-00251-9

Malaria is one of the most devastating infectious diseases of humans. It is problematic clinically and economically as it prevails in poorer countries and regions, strongly hindering socioeconomic development. The causative agents of malaria are unicellular protozoan parasites belonging to the genus Plasmodium. These parasites infect not only humans but also other vertebrates, from reptiles and birds to mammals. To date, over 200 species of Plasmodium have been formally described, and each species infects a certain range of hosts. Plasmodium species that naturally infect humans and cause malaria in large areas of the world are limited to five-P. falciparum, P. vivax, P. malariae, P. ovale and P. knowlesi. The first four are specific for humans, while P. knowlesi is naturally maintained in macaque monkeys and causes zoonotic malaria widely in South East Asia. Transmission of Plasmodium species between vertebrate hosts depends on an insect vector, which is usually the mosquito. The vector is not just a carrier but the definitive host, where sexual reproduction of Plasmodium species occurs, and the parasite's development in the insect is essential for transmission to the next vertebrate host. The range of insect species that can support the critical development of Plasmodium depends on the individual parasite species, but all five Plasmodium species causing malaria in humans are transmitted exclusively by anopheline mosquitoes. Plasmodium species have remarkable genetic flexibility which lets them adapt to alterations in the environment, giving them the potential to quickly develop resistance to therapeutics such as antimalarials and to change host specificity. In this article, selected topics involving the Plasmodium species that cause malaria in humans are reviewed.

Matched MeSH terms: Reptiles
Fulltext Evidence of West Nile virus infection in migratory and resident wild birds in west coast of peninsular Malaysia

Ain-Najwa MY, Yasmin AR, Omar AR, Arshad SS, Abu J, Mohammed HO, et al.

One Health, 2020 Dec;10:100134.
PMID: 32405525 DOI: 10.1016/j.onehlt.2020.100134

West Nile virus (WNV) is a zoonotic mosquito-borne flavivirus that is harbored and amplified by wild birds via the enzootic transmission cycle. Wide range of hosts are found to be susceptible to WNV infection including mammals, amphibians and reptiles across the world. Several studies have demonstrated that WNV was present in the Malaysian Orang Asli and captive birds. However, no data are available on the WNV prevalence in wild birds found in Malaysia. Therefore this study was conducted to determine the serological and molecular prevalence of WNV in wild birds in selected areas in the West Coast of Peninsular Malaysia. Two types of wild birds were screened, namely migratory and resident birds in order to explore any possibility of WNV transmission from the migratory birds to the resident birds. Thus, a cross-sectional study was conducted at the migratory birds sanctuary located in Kuala Gula, Perak and Kapar, Selangor by catching 163 migratory birds, and 97 resident birds from Kuala Gula and Parit Buntar, Perak at different time between 2016 and 2017 (Total, n = 260). Blood and oropharyngeal swabs were collected for serological and molecular analysis, respectively. Serum were screened for WNV antibodies using a commercial competitive ELISA (c-ELISA) (ID Screen® West Nile Competition Multi-species ELISA, ID VET, Montpellier, France) and cross-reactivity towards Japanese Encephalitis virus (JEV) was also carried out using the JEV-double antigen sandwich (DAS) ELISA. Oropharyngeal swabs were subjected to one-step RT-PCR to detect WNV RNA, in which positive reactions were subsequently sequenced. WNV seropositive rate of 18.71% (29/155) at 95% CI (0.131 to 0.260) and molecular prevalence of 15.2% (16/105) at 95% CI (0.092 to 0.239) were demonstrated in migratory and resident wild birds found in West Coast Malaysia. Phylogenetic analyses of the 16 WNV isolates found in this study revealed that the local strains have 99% similarity to the strains from South Africa and were clustered under lineage 2. Evidence of WNV infection in resident and migratory birds were demonstrated in this study. As a summary, intervention between migratory birds, resident birds and mosquitoes might cause the introduction and maintenance of WNV in Malaysia, however the assumption could be further proven by studying the infection dynamics in the mosquitoes present in the studied areas.

Matched MeSH terms: Reptiles
Review of Mites Found on Various Animal Hosts and at Different Localities in Malaysia

Azmiera N, Mariana A, Pimsler ML, Heo CC

J Med Entomol, 2020 09 07;57(5):1354-1363.
PMID: 32440683 DOI: 10.1093/jme/tjaa086

Mite biodiversity and distribution in Malaysia is currently understudied. Most previous works on Malaysian Acari have focused on pest organisms of medical, veterinary, and agricultural concern, with a few recent studies centered on mites in forensic contexts. Previous literatures have targeted collection sites in forest reserves and/or mountains in either Peninsular or Malaysian Borneo, though the state of Sarawak had the least publications related to mite species descriptions despite having the highest number of nature parks of any state in the country. Most publications focused on the three states Selangor, Pahang and Sabah. Most of the mite species reported were from mammals (66.3%), with fewer species from birds (21.7%), arthropods (11.2%), and reptiles (0.8%). We believe that further work on the systematic documentation of mite species throughout Malaysia is necessary as it could generate useful tools, such as the use of mites as biogeographical markers or as forensic indicators. Therefore, this review catalogs mite species that have been documented in or on animal hosts in Malaysia and serves as a foundation for future work.

Matched MeSH terms: Reptiles/parasitology*
A new species of Sphenomorphus (Squamata: Scincidae) from Phu Quoc Island, Vietnam with a discussion of biogeography and character state evolution in the S. stellatus group

Grismer LL, Nazarov RA, Bobrov VV, Poyarkov NA

Zootaxa, 2020 Jun 19;4801(3):zootaxa.4801.3.3.
PMID: 33056644 DOI: 10.11646/zootaxa.4801.3.3

An integrative taxonomic analysis of the Sphenomorphus stellatus group recovered a newly discovered museum specimen from Phu Quoc Island, Kien Giang Province, Vietnam as a new species most closely related to S. preylangensis from Phnom Chi in central Cambodia, approximately 175 km to the northeast. Most notably, S. phuquocensis sp. nov. lacks the derived condition of having black dorsal stripes that diagnose S. annamiticus-the sister species to S. preylangensis plus S. phuquocensis sp. nov. A BioGeoBEARS analysis recovered the ancestor of the S. stellatus group to likely have ranged across forested regions on an exposed Sunda Shelf from southwestern Indochina to Peninsular Malaysia prior to diverging into northern and southern lineages separated by the Gulf of Thailand. Episodic fluctuations in sea levels and concomitant changes in the physiography of the Mekong Delta contributed to the fragmented distribution within and between species of the northern lineage. Sphenomorphus phuquocensis sp. nov. represents the second species of reptile endemic to Phu Quoc Island.

Matched MeSH terms: Reptiles*
Fulltext Conspectus of flora, fauna and micro-climate data in Tasik Kenyir from Mac 2015-February 2016

Afiq Ramlee MN, Hussin MF, Roslan A, Rosmidi FH, Pesiu E, Aisyah A Rahim N, et al.

Data Brief, 2020 Apr;29:105328.
PMID: 32181296 DOI: 10.1016/j.dib.2020.105328

This data article presents the diversity of flora and selected fauna in Tasik Kenyir, Malaysia. This man-made lake once suffered huge loss of biodiversity for allowing an earth-dam construction during 1980s. Series of publications on different types of target taxa have been published separately after the post-dam construction. A biodiversity assessment was conducted in Tasik Kenyir from March 2015 until February 2016. The one year assessment were compiled with the previous published data to document and updated the biodiversity checklist in the lake. The data show that Tasik Kenyir is occupied by 113 tree species, 217 butterfly species, 35 bee species, 26 reptile species, 267 aves species and 153 mammal species. The micro-climate data was downloaded from the Malaysian Meteorological Department and analysed in R Studio to highlight the relationship between climate data and biodiversity data.

Matched MeSH terms: Reptiles
Fulltext Behavioral and corticosterone responses to carbon dioxide exposure in reptiles

Natusch DJD, Aust PW, Khadiejah S, Ithnin H, Isa A, Zamzuri CK, et al.

PLoS One, 2020;15(10):e0240176.
PMID: 33022690 DOI: 10.1371/journal.pone.0240176

The use of carbon dioxide (CO2) exposure as a means of animal euthanasia has received considerable attention in mammals and birds but remains virtually untested in reptiles. We measured the behavioral responses of four squamate reptile species (Homalopsis buccata, Malayopython reticulatus, Python bivitattus, and Varanus salvator) to exposure to 99.5% CO2 for durations of 15, 30, or 90 minutes. We also examined alterations in plasma corticosterone levels of M. reticulatus and V. salvator before and after 15 minutes of CO2 exposure relative to control individuals. The four reptile taxa showed consistent behavioral responses to CO2 exposure characterized by gaping and minor movements. The time taken to lose responsiveness to stimuli and cessation of movements varied between 240-4260 seconds (4-71 minutes), with considerable intra- and inter-specific variation. Duration of CO2 exposure influenced the likelihood of recovery, which also varied among species (e.g., from 0-100% recovery after 30-min exposure). Plasma corticosterone concentrations increased after CO2 exposure in both V. salvator (18%) and M. reticulatus (14%), but only significantly in the former species. Based on our results, CO2 appears to be a mild stressor for reptiles, but the relatively minor responses to CO2 suggest it may not cause considerable distress or pain. However, our results are preliminary, and further testing is required to understand optimal CO2 delivery mechanisms and interspecific responses to CO2 exposure before endorsing this method for reptile euthanasia.

Matched MeSH terms: Reptiles/physiology*
Fulltext “Speedy Biochemistry” as a new teaching method in preclinical curriculum

Noor Akmal Shareela, I.

Medicine & Health, 2020;15(2):327-332.
MyJurnal

Sesi praktikal konvensional sebelum ini telah dilaporkan kurang berkesan dalam mencapai objektif pembelajaran. Oleh itu “Speedy Biochemistry” diperkenalkan untuk membantu pelajar mengaplikasikan pengetahuan yang telah mereka pelajari di dalam kelas. Teknik ini memupuk semangat kerja berpasukan dan penerapan pengetahuan dalam penyelesaian masalah yang dapat dicapai melalui pembelajaran aktif. Pendekatan pembelajaran aktif telah kian diminati oleh para akademik kerana memberikan lebih banyak faedah kepada pelajar. Sesi “Speedy Biochemistry” telah dijalankan di kalangan pelajar perubatan Tahun 1 di Universiti Kebangsaan Malaysia dan maklum balas mereka telah direkodkan. “Speedy Biochemistry” boleh menjadi contoh sesi pembelajaran aktif yang baik dalam meningkatkan minat pelajar perubatan di dalam mata pelajaran Biokimia.

Matched MeSH terms: Reptiles
Fulltext Capsular bag distension syndrome following phacoemulsification with implantation of intraocular lens

Eng, K.J., Safinaz, M.K., Malisa, A.

Medicine & Health, 2020;15(2):306-312.
MyJurnal

Sindrom distensi beg kapsul ialah salah satu komplikasi yang jarang berlaku selepas fakoemulsifikasi dengan implan kanta intraokular dimasukkan ke dalam bag kanta dalam mata. Kami menerangkan satu kes sindrom distensi beg kapsul yang berlaku pada seorang lelaki berusia pertengahan yang menjalani fakoemulsifikasi dengan ‘plat haptic’ implan kanta intraokular (Zeiss CT ASPHINA 509MP) ke dalam mata kanan. Penglihatan mata kanan semasa pemeriksaan susulan 1 minggu and susulan 5 minggu selepas pembedahan tidak menunjukan penambahbaikan dengan refraksi kuasa mata bertukar menjadi minus 2.5 diopter. Tekanan intraokular hanya meningkat pada 2 jam selepas pembedahan dan normal semasa pemeriksaan susulan berikutnya. Beg kapsul distensi telah disahkan dengan menggunakan IOL Master 700. IOL Master 700 menunjukkan pengasingan abnormal beg kapsul dari implan kanta intraokular. Diagnosis sindrom distensi beg kapsul yang disebabkan oleh pengekalan viskoelastik dibuat. Pengeluaran viskoelastik yang tertinggal di dalam mata kanan telah dilakukan dan sindrom distensi beg kapsul berjaya diselesaikan dengan penglihatan mata kanan kembali ke 6/6. Oleh itu, pengeluaran viskoelastik dengan sepenuhnya semasa fakoemulsifikasi dengan ‘plat haptic’ implan kanta intrakular adalah penting untuk mengelakkan sindrom distensi beg kapsul.

Matched MeSH terms: Reptiles
Fulltext Kepimpinan pengetua berdasarkan atribut semula jadi dalam memartabatkan profesionalisme keguruan di smk St Micheal penampang,Sabah

Rohani Binti Marasan, Dg.NorizahAg. Kiflee@Dzulkifl, Colonius Atang

Malaysian Journal of Social Sciences and Humanities, 2019;4(7):168-177.
MyJurnal

Kepimpinan pengetua diterokai berdasarkan atribut semula jadi yang memfokuskan ketegasan kepimpinan pengetua dalam lapan bidang amalan pengurusan di sekolah. Kerangka teoritikal adalah bersandarkan Teori The Great Man dan model pengetua berkesan diaplikasikan dalam menjalankan kajian secara kualitatif iaitu melalui kajian kes tunggal. Data kualitatif ini diperolehi dengan menemubual pengetua, barisan pentadbir, guru kanan mata pelajaran, dan guru-guru. Data kualitatif dianalisa secara manual. Dapatan menunjukkan atribut semula jadi pengetua berdasarkan aspek ketegasan adalah mencerminkan kewibawaan sikap pengetua dalam amalan pengurusannya di sekolah. Aspek ini diteliti berdasarkan tema demografi pengetua dan pandangan guru-guru. Temu bual mendalam ini menjelaskan amalan pengurusan kepimpinan pengetua dalam lapan bidang utama di sekolah didapati menyokong dapatan sebagaimana dalam teori dibangunkan serta model pengetua berkesan. Bagaimanapun, dalam menghadapi cabaran impak globalisasi, pengetua juga memerlukan sokongan daripada pelbagai pihak sama ada warga sekolah mahupun pihak luar dalam mengurus sekolah dengan lebih berkesan.

Matched MeSH terms: Reptiles
Fulltext Sikap belajar sejarah melalui penerokaan sumber sejarah

M. Kaviza

Malaysian Journal of Social Sciences and Humanities, 2019;4(5):69-75.
MyJurnal

Oleh kerana pelaksanaan pembelajaran sejarah yang berkesan dapat membentuk sikap belajar yang positif dalam kalangan murid, maka kajian tinjauan ini adalah bertujuan untuk mengenal pasti tahap persepsi sikap belajar sejarah dari segi minat belajar sejarah, kebolehan belajar sejarah dan penggunaan bahan sejarah bagi murid yang mengikuti pembelajaran sejarah berasaskan penggunaan sumber sejarah, di samping untuk menentukan sama ada terdapat perbezaan min persepsi sikap belajar sejarah berdasarkan jantina. Seramai 55 orang murid Tingkatan Empat terlibat dalam kajian ini. Soal selidik yang telah diadaptasi yang telah disahkan oleh pakar-pakar penilai dalam bidang pendidikan sejarah serta mempunyai nilai kebolehpercayaan yang baik merupakan instrumen kajian ini. Data kajian ini telah dianalisis secara deskriptif dan inferensi iaitu ujian-t sampel berpasangan melalui perisian IBM SPSS. Dapatan kajian ini menunjukkan bahawa tahap persepsi sikap belajar sejarah dan ketiga-tiga konstruknya adalah tinggi. Selain itu, dapatan kajian ini juga telah melaporkan bahawa tidak terdapat perbezaan min persepsi sikap belajar sejarah berdasarkan jantina. Sikap belajar sejarah yang positif yang telah dipamerkan oleh murid-murid dalam kajian ini telah mencadangkan kepada guru-guru Sejarah untuk merekabentuk dan melaksanakan proses pembelajaran sejarah dengan menggunakan sumber sejarah secara intensif di dalam kelas selaras dengan matlamat kurikulum sejarah untuk membina minat terhadap mata pelajaran sejarah sebagai satu disiplin ilmu yang dinamik dan membina semangat patriotisme dalam mempertahankan kedaulatan negara.

Matched MeSH terms: Reptiles
Fulltext Pengetahuan pedagogi kandungan (ppk) guru bukan pengkhususan reka bentuk dan teknologi (rbt) di sekolah menengah

Cathrine Binti Masingan, Sabariah Bte Sharif

Malaysian Journal of Social Sciences and Humanities, 2019;4(6):64-71.
MyJurnal

Kajian ini bertujuan untuk meneroka kefahaman Pengetahuan Pedagogi Kandungan (PPK) guru bukan pengkhususan mata pelajaran Reka Bentuk dan Teknologi (RBT) di Sekolah Menengah. Kajian ini adalah kajian kualitatif single case yang melibatkan dua orang guru bukan pengkhususan mata pelajaran RBT dipilih sebagai peserta kajian. Pengumpulan data menggunakan kaedah temu bual, pemerhatian dan juga analisis dokumen. Proses analisis data melibatkan tiga peringkat koding dalam Grounded Theory iaitu open coding, axial coding dan selective coding. Hasil kajian mendapati kedua peserta belum memahami dan menguasai sepenuhnya hala tuju, matlamat dan fokus KSSM RBT. Selain itu, mereka juga masih menghadapi masalah dalam menguasai isi kandungan mata pelajaran tersebut dengan baik. Dari aspek pengetahuan pedagogi, walaupun peserta kajian sedar tentang pendekatan-pendekatan PdPc yang dicadangkan dalam DSKP KSSM mata pelajaran RBT, namun mereka kurang menggunakan pendekatan tersebut dan masih cenderung menggunakan pendekatan pengajaran tradisional yang lebih berpusatkan kepada guru dan menggunakan kaedah syarahan semasa proses PdPc.

Matched MeSH terms: Reptiles
Fulltext Penerimaan penggunaan mobile learning di kalangan pelajar tingkatan 6 dalam mata pelajaran Geografi

Dympna James Jemson, Sabariah Sharif, Soon Singh A/L Bikar nSingh

Malaysian Journal of Social Sciences and Humanities, 2019;4(6):101-107.
MyJurnal

Kajian ini dilaksanakan untuk melihat penerimaan terhadap penggunaan mobile learning di kalangan pelajar tingkatan 6 dalam mata pelajaran geografi. Kaedah kuantitatif digunakan dalam kajian ini yang melibatkan sebuah pusat tingkatan 6 yang terletak di daerah Kota Kinabalu, Sabah seramai 137 orang pelajar. Semua pelajar yang mengambil mata pelajaran geografi telah diambil sebagai sampel kajian. Borang soal selidik digunakan sebagai instrumen dalam kajian ini yang telah diubahsuai dan dirujuk daripada Technology Acceptance Model (TAM) untuk menentukan tahap penerimaan terhadap penggunaan mobile learning di kalangan pelajar tingkatan 6 dalam mata pelajaran Geografi. Hasil daripada analisis statistik menunjukkan bahawa tahap penerimaan pelajar terhadap mobile learning berada di tahap yang tinggi.

Matched MeSH terms: Reptiles
Molecular diagnosis and genetic diversity of Cryptosporidium spp. in exotic birds of southwest of Iran

Jalas M, Tavalla M

Trop Biomed, 2018 Dec 01;35(4):944-950.
PMID: 33601843

Cryptosporidium parasites can infect a wide range of vertebrate hosts including reptiles, mammals, and birds. Due to the zoonotic nature of cryptosporidiosis and its close contact with exotic birds and humans, the present study aimed to determine the prevalence and genetic diversity of Cryptosporidium spp. in exotic birds of southwest of Iran, by the staining and molecular methods. In the present research, 369 stool specimens were randomly collected from exotic birds and stained by modified acid-fast stain using Ziehl-Neelsen method. The slides were examined using light microscopy at a magnification of 100X. Then, the extracted DNA was amplified using the PCR method. Finally, all genotypes and positive samples from PCR assay were sequenced by Bioneer Company (Daejeon, South Korea). Among 369 stool specimens, 25 and 27 cases were found to be positive for Cryptosporidium spp. by the modified Ziehl-Neelsen staining and the PCR methods, respectively. Based on the genotyping, C. avian genotype III and C. meleagridis were detected in 25 and 2 stool samples, respectively. The results revealed a relatively high prevalence of Cryptosporidium spp. in exotic birds in the southwest of Iran. Due to the zoonotic nature of C. meleagridis, these exotic birds can be a significant source of cryptosporidiosis. It is important that high-risk people, including immune-deficient patients, receive correct information about the risk of indirect and direct contact with infected exotic birds.

Matched MeSH terms: Reptiles
Pembandingan kesan faktor pelekangan (fd) ke atas bahan komposit plastik bertetulang ekaarah dan bertenun semasa proses pemesinan kisar

Azmi H, Che Haron C, Ghani J, Suhaily M

Sains Malaysiana, 2018;47:829-838.

Serabut kenaf merupakan salah satu serabut berasaskan tumbuhan di dalam kumpulan serabut asli yang semakin luas
penggunaannya. Serabut kenaf dicampurkan dengan bahan plastik (epoksi) bagi menghasilkan suatu bahan baharu
dengan sifat mekanikal yang baik dengan kos pembuatan yang rendah. Bahan kerja ini terbahagi kepada dua jenis iaitu
serabut kenaf ekaarah dan serabut kenaf tenunan. Uji kaji ini akan menumpukan kepada pembandingan kesan faktor
pelekangan Fd yang terhasil semasa proses pemesinan kisar ke atas bahan komposit tersebut dengan penentuan set
parameter mesin yang paling optimum bagi mengurangkan kesan Fd. Uji kaji dijalankan berdasarkan analisis kaedah
gerak balas permukaan (RSM) dengan pendekatan reka bentuk Box-Behnken bagi mendapatkan hasil faktor bersandar
terhadap sambutan. Faktor yang terlibat adalah kelajuan pemotongan, kadar suapan dan kedalaman pemotongan. Proses
pengisaran secara lelurus (lurah) dilakukan bagi melihat kesan Fd yang terhasil dengan menggunakan perkakasan mata
alat jenis Keluli Berkelajuan Tinggi (HSS) tidak bersalut hujung rata berdiameter 10 mm. Imej daripada mikroskop
menunjukkan bahan komposit serabut kenaf ekaarah menghasilkan faktor pelekangan yang tinggi berbanding kesan
ke atas bahan komposit serabut kenaf bertenun. Bagi set parameter optimum pula, bahan kerja serabut kenaf ekaarah
ialah kelajuan pemotongan, kadar suapan dan kedalaman pemotongan yang rendah. Manakala bagi bahan kerja serabut
kenaf bertenun, set parameter optimum adalah kelajuan pemotongan yang rendah dengan kadar suapan dan kedalaman
pemotongan yang tinggi.

Matched MeSH terms: Reptiles
The global distribution of tetrapods reveals a need for targeted reptile conservation

Roll U, Feldman A, Novosolov M, Allison A, Bauer AM, Bernard R, et al.

Nat Ecol Evol, 2017 Nov;1(11):1677-1682.
PMID: 28993667 DOI: 10.1038/s41559-017-0332-2

The distributions of amphibians, birds and mammals have underpinned global and local conservation priorities, and have been fundamental to our understanding of the determinants of global biodiversity. In contrast, the global distributions of reptiles, representing a third of terrestrial vertebrate diversity, have been unavailable. This prevented the incorporation of reptiles into conservation planning and biased our understanding of the underlying processes governing global vertebrate biodiversity. Here, we present and analyse the global distribution of 10,064 reptile species (99% of extant terrestrial species). We show that richness patterns of the other three tetrapod classes are good spatial surrogates for species richness of all reptiles combined and of snakes, but characterize diversity patterns of lizards and turtles poorly. Hotspots of total and endemic lizard richness overlap very little with those of other taxa. Moreover, existing protected areas, sites of biodiversity significance and global conservation schemes represent birds and mammals better than reptiles. We show that additional conservation actions are needed to effectively protect reptiles, particularly lizards and turtles. Adding reptile knowledge to a global complementarity conservation priority scheme identifies many locations that consequently become important. Notably, investing resources in some of the world's arid, grassland and savannah habitats might be necessary to represent all terrestrial vertebrates efficiently.

Matched MeSH terms: Reptiles*
Fulltext Dissemination of Salmonella enterica sequence types among ASEAN economic community countries

Patchanee P, Boonkhot P, Kittiwan N, Tadee P, Chotinun S

Southeast Asian J. Trop. Med. Public Health, 2015 Jul;46(4):707-19.
PMID: 26867391

Food-borne illness caused by Salmonella enterica remains a public health problem and results in economic loss worldwide. With the up-coming establish- ment of the ASEAN Economic Community (AEC) allowing unrestricted move- ment of labor and goods, there is a higher risk of pathogen transmission among the AEC countries. This study characterized and investigated the spatial and temporal associations of S. enterica strains isolated in AEC countries during 1940- 2012 compared with those isolated in northern-Thailand during 2011-2013. Of the 173 S. enterica strains examined, 68 sequence types (STs) and 32 clonal complexes (CCs) were identified by multi loci sequence typing. Twenty-one strains belonged to four sequence types new to AEC countries, and they constituted only two CCs. A number of strains originated from various countries with multiple hosts, were highlighted. There was evidence of strains circulating in the AEC region well over a decade. Such information will be important in formulating biosecurity measures, as well as in educating regarding the risk of disease transmission in AEC.

Matched MeSH terms: Reptiles/microbiology
Sabellaria jeramae, a new species (Annelida: Polychaeta: Sabellariidae) from the shallow waters of Malaysia, with a note on the ecological traits of reefs

Nishi E, Matsuo K, Capa M, Tomioka S, Kajihara H, Kupriyanova EK, et al.

Zootaxa, 2015;4052(5):555-68.
PMID: 26701452 DOI: 10.11646/zootaxa.4052.5.3

A new species of the genus Sabellaria Lamarck, 1818 (Annelida: Polychaeta: Sabellariidae) is described from the intertidal zone of Jeram, Selangor, Malaysia. Sabellaria jeramae n. sp. is a gregarious species that constructs large reefs several hundreds of meters long and 50-200 m wide. The new species is distinguished from other congeners by the character combination of the presence of a single kind of middle paleae with conspicuous morphology, and outer paleae with long frayed teeth. Morphological features of the species are described and compared to those of all congeneric species. We also compare the reef structure and geographical distribution of the new species to those of the members of the family Sabellariidae around the world, demonstrating the ecological traits of the reefs.

Matched MeSH terms: Reptiles
Fulltext Ecological importance of sedges: a survey of the Australasian Cyperaceae genus Lepidosperma

Barrett RL

Ann Bot, 2013 Apr;111(4):499-529.
PMID: 23378523 DOI: 10.1093/aob/mct008

BACKGROUND: Sedges (Cyperaceae) form an important ecological component of many ecosystems around the world. Sword and rapier sedges (genus Lepidosperma) are common and widespread components of the southern Australian and New Zealand floras, also occurring in New Caledonia, West Papua, Borneo, Malaysia and southern China. Sedge ecology is seldom studied and no comprehensive review of sedge ecology exists. Lepidosperma is unusual in the Cyperaceae with the majority of species occurring in dryland habitats.
SCOPE: Extensive review of ecological literature and field observations shows Lepidosperma species to be important components of many ecosystems, often dominating understorey and sedge-rich communities. For the first time, a detailed ecological review of a Cyperaceae genus is presented.
CONCLUSIONS: Lepidosperma species are long-lived perennials with significant abundance and persistence in the landscape. Speciation patterns in the genus are of considerable interest due to complex biogeographical patterns and a high degree of habitat specificity. Potential benefits exist for medicinal products identified from several Lepidosperma species. Over 178 organisms, including 26 mammals, 42 birds, six reptiles, five amphibians, eight arachnids, 75 insects, three crustaceans and 13 fungi, are found to be dependent on, or making use of, Lepidosperma species. A significant relationship exists between Lepidosperma species and the moth genus Elachista. Implications for the conservation and ecology of both sedges and associated species are discussed.

Matched MeSH terms: Reptiles

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