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All Journal TREUBIA Journal of Social, Humanity, and Education
Mahmudul Hasan, Mahmudul
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Religion Humanities Education Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Social Sciences

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GENETIC DIVERGENCE AND GEOGRAPHIC DISTRIBUTION OF FROGS IN GENUS FEJERVARYA FROM INDONESIA INFERRED FROM MITOCHONDRIAL 16S rRNA GENE ANALYSIS Igawa, Takeshi; Sumida, Masayuki; Kurniawan, Nia; Djong, Tjong Hon; Maideliza, Tesri; Hamidy, Amir; Hasan, Mahmudul
TREUBIA Vol 41 (2014): Vol. 41, December 2014
Publisher : Research Center for Biology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/treubia.v41i0.361

Abstract

The Indonesian archipelago is an ideal setting for the study of speciation and biogeography. This archipelago is divided into three island groups based on zoogeography: Sundaland, Wallaceaand the Australian region. In this paper we used frogs in genus Fejervarya (Bolkay) to study biogeography and examine patterns of gene flow across proposed zoogeographic boundaries. Severalmolecular studies on Fejervarya species from Indonesia have been carried out, but comparative studies among members of the genus Fejervarya have yet to be performed. In order to elucidate genetic divergence and geographic distribution of these frogs, we conducted a molecular analysis of the mitochondrial 16S rRNA gene using 179 frogs from five Fejervarya species. In total we collected from 32 localities in Sumatra, Kalimantan (Indonesian part of Borneo), Java, Bali, Sulawesi and Lesser Sunda Islands in Indonesia. Molecular phylogenetic analysis recovered 35 haplotypes and showed that frogs in the genus Fejervarya were divided into two well-supported clades. The first group were of three species, F. limnocharis, F. iskandari and F. cf. verruculosa and the other group clade consisted of Fejervarya cancrivora and Fejervarya sp. (Sulawesi-type). The average sequence divergence among these four species ranged from 1.09 to 16.03% (mean = 11.29±2.83%). The present results clearly show that there are five Fejervarya species in the Indonesian archipelago. Fejervarya limnocharis and F. cancrivora are widely distributed and sympatric in Sumatra, Borneo and Java. Fejervarya iskandari is not endemic to Java and also occurs in the Lesser Sundas. Fejervarya cf. verruculosa and Fejervarya sp. (Sulawesi-type) are endemic to Lesser Sunda and Sulawesi Island, respectively. Key words: Fejervarya, genetic divergence, geographic distribution, 16S rRNA gene
A comprehensive review of international students' perceptions of the learning environment in relation to academic achievement Masud, Nuruddin Ahmed; Mensah, Joshua; San, San Su Su; Subarna, Mst Taherun Nesa; Hasan, Mahmudul
Journal of Social, Humanity, and Education Vol. 3 No. 3 (2023): May
Publisher : Goodwood Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35912/jshe.v3i3.1434

Abstract

Purpose: The primary purpose of the research is to pursue the international student's perception of the learning environment related to academic achievement in international universities to establish the elements of an educational culture that contribute to the academic achievement of international students. Research methodology: Numerous studies have been conducted over the last few decades to determine how students perceive their learning environment as reflected by their average level of academic achievement. The impact of international students from the Asian & African continent and their social, cultural, and educational experiences on their academic achievement was evaluated by reviewing global and local materials conducted at one Chinese university in Zhejiang province. This study commenced with a search of computerized educational, sociology, and psychology databases using the exploratory phase method. The materials for the review are divided into two sections: a synopsis of academic, social, and cultural consequences & a description and criticism of strategies for promoting international competitiveness and fostering intercultural understanding. Results: International students' perception of the learning environment has a significant impact on academic achievement at international foreign universities, and the findings of this study stimulate the researcher to emerge with new strategies that can heighten the performance of international students.
Co-Authors AMIR HAMIDY Djong Hon Tjong Masayuki Sumida, Masayuki Masud, Nuruddin Ahmed Mensah, Joshua Nia Kurniawan San, San Su Su Subarna, MST Taherun Nesa Takeshi Igawa, Takeshi Tesri Maideliza