New record of Sumatran barb (Puntigrus tetrazona) as an introduced species in Lake Toba, Indonesia: Invasiveness risk

Biosystems Diversity, Journal Year: 2025, Volume and Issue: 33(1), P. e2504 - e2504

Published: Jan. 21, 2025

Lake Toba is an important habitat for native Indonesian fish species, but in recent years it has experienced pressure due to invasive introduced species. Introduced species that have been identified include Amphilophus labiatus, Aplocheilus panchax, Cyprinus carpio, Mystacoleucus marginatus, M. padangensis, Oreochromis mossambicus, O. niloticus, and Parambassis siamensis, while a newly recorded discovered, namely Puntigrus tetrazona. Therefore, data are needed regarding the distribution, density, growth pattern, risk of invasiveness this as basis future management. This research uses exploratory method. The frequency index value P. tetrazona reached 70%, where absences were found three locations, Ajibata, Silalahi, Tongging. Population density values show average reaching 0.08 ind./m2, highest was Muara 0.39 ind./m2. results Fish Invasiveness Screening Test (FIST) analysis showed within moderate category biodiversity with distribution (FD) 50%. length-weight relationship 3.027 (isometric pattern). relative weight (Wr) condition factor 102.96, which indicates stable condition. pattern indicate suitable Available food sources low level competition beneficial new habitat. posed by could possibly turn into high if population not controlled. Moreover, natural enemies do yet exist Toba, then next few experience explosion. will add threats survival Neolissochilus Tor groups. useful managing North Sumatra, Indonesia.

Language: Английский

Conservation and Population Status of Freshwater Fishes from Kelekar River, South Sumatra, Indonesia

International Journal of Current Science Research and Review, Journal Year: 2024, Volume and Issue: 07(02)

Published: Feb. 17, 2024

This study assessed the conservation and population status of fish species collected from Kelekar river. was conducted between May 2022 June 2023. A total 1.267 belonging to 49 19 families were recorded. Cyprinidae found be richest family (18 species) followed by Osphronemidae (5 species), Channidae (4 Siluridae (3 Bagridae, Claridae, Pangasidae, Pristolepidae (2 others (1 species). The Shannon-Weiner diversity index 3.547. Simpson’s dominance 0.035, Evenness 0.921. biodiversity river in high category. Base on latest IUCN red list, one as data deficient, forty-three least concern, two near threatened, vulnerable, critically endangered. based present River unknown (35%), stable (47%), decreasing (18%).

Language: Английский