Biodiversity and Species Composition of Fish in Huai Banglieng, Champasak Province, The Lao People’s Democratic Republic
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Abstract
Banglieng River is a tributary of the Mekong River in the southern part of The Lao People's Democratic Republic (Lao PDR). Its upstream part is on the Bolaven Plateau with an average height of 1,200 meters above sea level. The study of fish biodiversity and species composition of fish was planned to collect data from 6 sampling sites covering the upstream, lower and tributary areas of Banglieng River by collecting data 3 times a year between 2020-2021. Fishes were collected by gillnets with 6 different mesh sizes including 1.5, 2, 4, 6, 8 and 10 cm, and seine nets. The data were used to analyze biodiversity, ecological index and the ecological characteristics of the 6 sampling sites. A total of 769 individuals of fish surveyed were classified into 18 families and 54 species. Cyprinidae was a dominant group with 18 species, accounting for 33.33% of the total number of fish species found. Moreover, 3 undescribed species of fish were found including Lepidocephalichthys n.sp., Rasbora n.sp. and Parambassis n.sp. At sampling sites 5 and 6 located in the upstream area of Banglieng River, 14 species of fish in 9 families were found. Among them, 1 fish species (Oreochromis niloticus) was exotic. At this sampling area, Poropuntius solitus and Devario gibber were found to be the dominant species. At sampling sites 1, 2 and 4 located in the downstream area of Banglieng River, it was an area with high biodiversity, with 38 species of fish in 13 families, but no endemic species. At this sampling area, Raiamas guttatus and Mystacoleucus atridorsalis were found to be the dominant species.
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บทความที่ได้รับการตีพิมพ์เป็นลิขสิทธิ์ของ วารสารวิทยาศาสตร์และเทคโนโลยี มหาวิทยาลัยอุบลราชธานี
ข้อความที่ปรากฏในบทความแต่ละเรื่องในวารสารวิชาการเล่มนี้เป็นความคิดเห็นส่วนตัวของผู้เขียนแต่ละท่านไม่เกี่ยวข้องกับมหาวิทยาลัยอุบลราชธานี และคณาจารย์ท่านอื่นๆในมหาวิทยาลัยฯ แต่อย่างใด ความรับผิดชอบองค์ประกอบทั้งหมดของบทความแต่ละเรื่องเป็นของผู้เขียนแต่ละท่าน หากมีความผิดพลาดใดๆ ผู้เขียนแต่ละท่านจะรับผิดชอบบทความของตนเองแต่ผู้เดียว
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