Habitat use and movement activity of Neolissochilus soroides and Channa lucius during post inundation of Tembat Reservoir Hulu Terengganu

Azhari Mohamad, . and Nurfatin Zulkipli, . and Shafiq Zakeyuddin, . and Abdullah Samat, . and Shazana Sharir, . and Amir Shah Ruddin Md Sah, . and Farah Ayuni Farinordin, . and Shukor Md Nor, . Habitat use and movement activity of Neolissochilus soroides and Channa lucius during post inundation of Tembat Reservoir Hulu Terengganu. pp. 503-526. ISSN 1511-3701

The drastic changes in hydroelectric reservoir development created a completely new ecosystem that affects the river particularly in the inundated area. In this study five Neolissochilus soroides and Channa lucius were surgically implanted with a unique coded acoustic transmitter to observe the habitat utilisation and movement activity in Tembat Reservoir after the inundation process. All of the individuals were released into the transition zone of the reservoir and observed using passive and active acoustic tracking devices from April to December 2018. Kruskal-Walis test showed no significant difference between the average size of core area for N. soroides and C. lucius x2(1) 1.320 p 0.251. The home range also showed a similar result for N. soroides and C. lucius where there was an insignificant difference x2(1) 0.273 p 0.602. However duration wise N. soroides spend more time in the transition zone R1 (M 2.71 hrs SE 0.38) and C. lucius in the riverine zone R5 (M 7.14 hrs SE 6.13) and R6 (M 3.85 hours SE 6.36). From the active tracking survey PCA identified three (62.32) and four (71.19) components with eigenvalues greater than 1 for N. soroides and C. lucius respectively. Three most important habitat parameters for N. soroides were the size of river (r 0.97) existence of canopy cover (r 0.77) and substrate type (r 0.79).While for C. lucius were mesohabitat type (r 0.79) distance to riffle (r 0.97) existence of canopy cover (r 0.90) and elevation (r 0.90). A 24-hour movement frequency analysis for both species revealed two active hours of movement at dusk and dawn for both species. From the study it is known that N. soroides and C. lucius respond differently towards the inundation of the reservoir. The findings in this study can be implemented for effective aquatic management and conservation plan to ensure sustainable dam development.

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Abstract

The drastic changes in hydroelectric reservoir development created a completely new ecosystem that affects the river particularly in the inundated area. In this study five Neolissochilus soroides and Channa lucius were surgically implanted with a unique coded acoustic transmitter to observe the habitat utilisation and movement activity in Tembat Reservoir after the inundation process. All of the individuals were released into the transition zone of the reservoir and observed using passive and active acoustic tracking devices from April to December 2018. Kruskal-Walis test showed no significant difference between the average size of core area for N. soroides and C. lucius x2(1) 1.320 p 0.251. The home range also showed a similar result for N. soroides and C. lucius where there was an insignificant difference x2(1) 0.273 p 0.602. However duration wise N. soroides spend more time in the transition zone R1 (M 2.71 hrs SE 0.38) and C. lucius in the riverine zone R5 (M 7.14 hrs SE 6.13) and R6 (M 3.85 hours SE 6.36). From the active tracking survey PCA identified three (62.32) and four (71.19) components with eigenvalues greater than 1 for N. soroides and C. lucius respectively. Three most important habitat parameters for N. soroides were the size of river (r 0.97) existence of canopy cover (r 0.77) and substrate type (r 0.79).While for C. lucius were mesohabitat type (r 0.79) distance to riffle (r 0.97) existence of canopy cover (r 0.90) and elevation (r 0.90). A 24-hour movement frequency analysis for both species revealed two active hours of movement at dusk and dawn for both species. From the study it is known that N. soroides and C. lucius respond differently towards the inundation of the reservoir. The findings in this study can be implemented for effective aquatic management and conservation plan to ensure sustainable dam development.

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Item Type:	Article
AGROVOC Term:	Habitats
AGROVOC Term:	Freshwater fishes
AGROVOC Term:	Water reservoirs
AGROVOC Term:	Aquatic animals
AGROVOC Term:	Ecosystems
AGROVOC Term:	Freshwater ecology
Depositing User:	Mr. AFANDI ABDUL MALEK
Last Modified:	24 Apr 2025 00:55
URI:	http://webagris.upm.edu.my/id/eprint/10137

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