Research Article: Morpho-meristic analysis of the great snakehead (Channa marulius) collected from the Lowland ecosystem in Bangladesh and its future implications
- سال انتشار: 1402
- محل انتشار: مجله علوم شیلات ایران، دوره: 23، شماره: 2
- کد COI اختصاصی: JR_JIFRO-23-2_001
- زبان مقاله: انگلیسی
- تعداد مشاهده: 29
نویسندگان
MS Student, Dept. of Genetics and Fish Breeding, BSMRAU, Gazipur, Bangladesh
MS Student, Dept. of Genetics and Fish Breeding, BSMRAU, Gazipur, Bangladesh
Professor, Department of Fisheries Biology and Genetics, Faculty of Fisheries, Bangladesh Agricultural University (BAU), Mymensingh, Bangladesh
Associate Professor, Department of Genetics and Fish Breeding, Faculty of Fisheries, Bangabandhu Sheikh Mujibur Rahman Agricultural University (BSMRAU), Gazipur, Bangladesh
Assistant Professor, Department of Fisheries, Faculty of Fisheries, Bangamata Sheikh Fazilatunnesa Mujib Science & Technology University, Melandah, Jamalpur-۲۰۱۲, Bangladesh
Professor, Department of Fisheries Biology and Aquatic Environment, Faculty of Fisheries, Bangabandhu Sheikh Mujibur Rahman Agricultural University (BSMRAU), Gazipur, Bangladesh
Associate Professor, Department of Genetics and Fish Breeding, Faculty of Fisheries, Bangabandhu Sheikh Mujibur Rahman Agricultural University (BSMRAU), Gazipur, Bangladesh
چکیده
The genus Channa has many species including several cryptic species like the great snakehead (Channa marulius), locally known as “Gajar”, distributed across its natural distribution range of Southern and Southeast Asian countries including Bangladesh. This fish needs to be conserved but there is no information regarding the morphological variations in Bangladesh. This study reveals the morphometric traits and meristic counts of C. marulius collected from the lowland ecosystem in Bangladesh. A total of ۶۷ samples were collected from ۷ locations in Bangladesh to record morphological observations. This investigation was done on ۶ meristic traits and ۱۷ morphometric features. The fin formulae of C. marulius were dorsal ۵۵-۴۵, pectoral ۱۹-۱۴, pelvic ۲-۶, anal ۳۷-۲۸, and caudal C. ۱۷-۱۲. The lateral line is present which continued with ۶۸-۶۱ scales in a single line. All relationships (coefficient of determination, r۲) of the morphological measurements were found significant statistically (p≤ ۰.۰۵) by analysis of variance. The r۲ value shows the length-length relationships by total length (TL) vs. standard length (SL) (TL=a+b×SL) as the best-fitted model among seventeen equations. The fifteen morphometric measurements were used for the classification of populations by discriminant function analysis and could separate the populations at p< ۰.۰۰۱ at a highly significant level. The principal component analysis showed that SL, TL, and LDFB (length of dorsal fin base) of the morphometric measurements were important for the phenotypic variation in C. marulius fish populations. Thus, three key characteristics can be used to know the populational variations of C. marulius in Bangladesh and these findings can be useful for making any comparisons with its related species.کلیدواژه ها
Morpho-meristic character, Discriminant function analysis, Principal component analysis, Great snakehead population, Bangladeshاطلاعات بیشتر در مورد COI
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