TY - JOUR
T1 - Eco-biology of Tinfoil barb Barbonymus schwanenfeldii in tropical Lake Kenyir, east coast Malaysia
AU - Musa, Nadirah
AU - Mamat, Ruzaidi
AU - Musa, Naimah
AU - Piah, Rumeaida Mat
AU - Kamal, Abu Hena Mustafa
AU - Musa, Najiah
AU - Sari, Luthfiana Aprilianita
AU - Chowdhury, Ahmed Jalal Khan
N1 - Publisher Copyright:
© 2023 Desalination Publications. All rights reserved.
PY - 2023
Y1 - 2023
N2 - The impact of large dams is a prevalent topic in environmental science, but the importance of altered water quality as a driver of eco-biological impacts in a lake ecosystem is often missing from the research in tropical aquatic environments. The sustainability of fishing in Lake Kenyir is becoming increasingly challenging due to overfishing and worrying levels of pollution in numerous riverine locations, which are detrimental to aquatic ecosystems and jeopardize aquatic life, particularly fish. These negative consequences have transformed lake ecosystems into dreadful obstacles that may significantly impair a species’ capacity to carry out essential biological functions like development and reproduction. Based on the above perspectives, this study focused on some characteristics of water quality and reproductive biology (sexual dimorphism, age composition and gonad maturity) of Tinfoil barb Barbonymus schwanenfeldii, among one the popular fish in tropical man-made Lake Kenyir, Terengganu, Malaysia. The morphometric characteristics, meristic counts, age composition, and gonad maturity were investigated to examine the possible sexual size dimorphism, age, and the reproductive status of Tinfoil barb B. schwanenfeldii in Kenyir Lake, Terengganu, Malaysia. 8 morphometric characters showed significant differences within the sexes while meristic and otolith anatomy showed similar characteristics within the sexes. Males and females were of 5 and 1 y above, of age, respectively. Gonadosomatic index was between 3.84 ± 0.66 to 0.92 ± 0.13, and 6.50 ± 0.89 to 7.34 ± 1.11 while the hepatosomatic index ranged from 0.51 ± 0.17 to 0.59 ± 0.08, and 0.39 ± 0.04 to 0.70 ± 0.09 for males and females, respectively. 50% of the males were in the spent stage while 40% of the females were in Stage V, and 30% in Stage III. Thus, selected morphometrics parameters could be useful to differentiate within sexes of Tinfoil barb B. schwanenfeldii. The males B. schwanenfeldii were of older population compared to the female’s population in Kenyir Lake. According to the Malaysia’s National Water Quality Standards (NWQS), the water quality in Kenyir Lake Basin varied temporally and spatially and the most affected parameters were pH, dissolved oxygen, biochemical oxygen demand, chemical oxygen demand, and total suspended solids. The findings of this research may contribute to the further understanding of the eco-biology that aids in effective sustainable fisheries management in this fascinating man-made Lake Kenyir, Terengganu, Malaysia.
AB - The impact of large dams is a prevalent topic in environmental science, but the importance of altered water quality as a driver of eco-biological impacts in a lake ecosystem is often missing from the research in tropical aquatic environments. The sustainability of fishing in Lake Kenyir is becoming increasingly challenging due to overfishing and worrying levels of pollution in numerous riverine locations, which are detrimental to aquatic ecosystems and jeopardize aquatic life, particularly fish. These negative consequences have transformed lake ecosystems into dreadful obstacles that may significantly impair a species’ capacity to carry out essential biological functions like development and reproduction. Based on the above perspectives, this study focused on some characteristics of water quality and reproductive biology (sexual dimorphism, age composition and gonad maturity) of Tinfoil barb Barbonymus schwanenfeldii, among one the popular fish in tropical man-made Lake Kenyir, Terengganu, Malaysia. The morphometric characteristics, meristic counts, age composition, and gonad maturity were investigated to examine the possible sexual size dimorphism, age, and the reproductive status of Tinfoil barb B. schwanenfeldii in Kenyir Lake, Terengganu, Malaysia. 8 morphometric characters showed significant differences within the sexes while meristic and otolith anatomy showed similar characteristics within the sexes. Males and females were of 5 and 1 y above, of age, respectively. Gonadosomatic index was between 3.84 ± 0.66 to 0.92 ± 0.13, and 6.50 ± 0.89 to 7.34 ± 1.11 while the hepatosomatic index ranged from 0.51 ± 0.17 to 0.59 ± 0.08, and 0.39 ± 0.04 to 0.70 ± 0.09 for males and females, respectively. 50% of the males were in the spent stage while 40% of the females were in Stage V, and 30% in Stage III. Thus, selected morphometrics parameters could be useful to differentiate within sexes of Tinfoil barb B. schwanenfeldii. The males B. schwanenfeldii were of older population compared to the female’s population in Kenyir Lake. According to the Malaysia’s National Water Quality Standards (NWQS), the water quality in Kenyir Lake Basin varied temporally and spatially and the most affected parameters were pH, dissolved oxygen, biochemical oxygen demand, chemical oxygen demand, and total suspended solids. The findings of this research may contribute to the further understanding of the eco-biology that aids in effective sustainable fisheries management in this fascinating man-made Lake Kenyir, Terengganu, Malaysia.
KW - Meristics
KW - Morphometrics
KW - Otolith
KW - Reproduction
KW - Tinfoil barb
KW - Water quality Kenyir Lake
UR - http://www.scopus.com/inward/record.url?scp=85197103254&partnerID=8YFLogxK
U2 - 10.5004/dwt.2023.30016
DO - 10.5004/dwt.2023.30016
M3 - Article
AN - SCOPUS:85197103254
SN - 1944-3994
VL - 315
SP - 500
EP - 514
JO - Desalination and Water Treatment
JF - Desalination and Water Treatment
ER -