Patterns of Fish Assemblage, Growth, and Diet Composition in a Tropical River between Two Cascading Hydropower Dams

Table 5

Summary of regression analyses of the length-weight relationship (LWR) of selected species in the Murum River during the dry (trip 1) and wet (trip 2) seasons.

Family	Species	Trip	Log BW = log a + b log TL			Parameter estimates		SE	value	LWR: W = aL^b	Growth pattern
			n	R^2	value
Barigdae	Mystus singaringan	1	12	0.805	0.001	Log a	−6.857	1.748	0.003	W = 0.0011L^3.555	A+
						b	3.555	0.553	0.001
		2	NA
	Hemibagrus capitulum	1	10	0.955	0.001	Log a	−5.333	0.843	0.001	W = 0.0048L^3.129	A+
						b	3.129	0.240	0.001
		2	12	0.983	0.001	Log a	−6.473	0.491	0.001	W = 0.0015L^3.457	A+
						b	3.457	0.143	0.001
Cichlidae	Oreochromis mossambicus	1	11	0.961	0.001	Log a	−3.170	0.525	0.001	W = 0.0420L^2.744	A−
						b	2.744	0.185	0.001
		2	13	0.948	0.001	Log a	−2.545	0.531	0.001	W = 0.0785L^2.562	A−
						b	2.562	0.181	0.001
Cyprinidae	Barbonymus schwanenfeldii	1	72	0.899	0.001	Log a	−3.571	0.314	0.001	W = 0.0281L^2.686	A−
						b	2.686	0.108	0.001
		2	118	0.947	0.001	Log a	−4.496	0.181	0.001	W = 0.0112 L^3.004	I
						b	3.004	0.066	0.001
	Cyclocheilichthys apogon	1	74	0.920	0.001	Log a	−4.610	0.290	0.001	W = 0.0100L^3.048	I
						b	3.048	0.106	0.001
		2	29	0.972	0.001	Log a	−6.043	0.305	0.001	W = 0.0024L^3.614	A+
						b	3.614	0.117	0.001
	Hampala macrolepidota	1	12	0.874	0.001	Log a	−3.056	0.895	0.007	W = 0.0471L^2.481	A−
						b	2.481	0.298	0.001
		2	11	0.994	0.001	Log a	−5.136	0.240	0.001	W = 0.0059 L^3.192	A+
						b	3.192	0.085	0.001
	Lobocheilos ovalis	1	24	0.893	0.001	Log a	−4.558	0.653	0.001	W = 0.0105L^2.933	A−
						b	2.933	0.216	0.001
		2	6	0.848	0.009	Log a	−11.665	3.380	0.026	W = 0.0000 L^5.408	A+
						b	5.408	1.145	0.009
	Osteochilus enneaporos	1	11	0.882	0.001	Log a	−4.355	1.049	0.002	W = 0.0128L^2.900	A−
						b	2.900	0.354	0.001
		2	9	0.922	0.001	Log a	−5.969	1.155	0.001	W = 0.0026L^3.436	A+
						b	3.436	0.378	0.001
	Osteochilus hasseltii	1	53	0.869	0.001	Log a	−4.650	0.481	0.001	W = 0.0096L^3.007	I
						b	3.007	0.163	0.001
		2	NA
	Parachela oxygastroides	1	27	0.814	0.001	Log a	−5.916	0.914	0.001	W = 0.0027L^3.306	A+
						b	3.306	0.316	0.001
		2	24	0.831	0.001	Log a	−6.706	0.870	0.001	W = 0.0012L^3.571	A+
						b	3.571	0.310	0.001
	Puntioplites waandersi	1	14	0.986	0.001	Log a	−5.006	0.360	0.001	W = 0.0067L^3.162	A+
						b	3.162	0.110	0.001
		2	NA

n, number of individuals; R², coefficient of determination; SE, standard error; SD, standard deviation; A+, positive allometry; A−, negative allometry; I, isometric. Significant values ( value < 0.05) are indicated in bold.