Length-weight and length-length relationship of two endemic snakehead fish species from Brahmaputra river basin, Assam, India

Borah, Simanku; Gogoi, Pranab; Bhattacharjya, B. K.; Suresh, Vettath Raghavan; Yadav, Anil Kumar; Baitha, Raju; Koushlesh, Satish Kumar; Ray, Bipul Chandra; Das, Basanta Kumar

doi:10.1111/jai.13685

Cited by 11 publications

(10 citation statements)

References 11 publications

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“…LWRs can be used to convert length-frequency observations to biomass estimates while modelling an aquatic ecosystem (Kulbicki et al, 2005) and in converting length data obtained from back calculations on otoliths and scales. LWRs of other freshwater fishes from Indian rivers were previously reported by Baitha et al (2018), Borah et al (2018), Koushlesh et al (2018), Baitha et al (2017) and Nath et al (2017). The relative condition factor for L. calbasu, L. bata, L. rohita, L. dyocheilus and L. porcellus were estimated as 1.019± 0.023, 1.001 ±0.011, 1.013 ± 0.021, 1.005 ± 0.023 and 1.003 ±0.017, respectively (Table 2).…”

supporting

confidence: 60%

Length-weight relationship and relative condition factor of five Labeo spp. from river Cauvery in India

Mol¹,

Jaiswar²,

Panikkar³

et al. 2019

Indian J. Fish.

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Length-weight relationship (LWR) of five species of the genus Labeo (Family: Cyprinidae) namely L. rohita (Hamilton,1822), L. calbasu (Hamilton,1822), L. bata (Hamilton,1822), L. dyocheilus (McClelland, 1839) and L. porcellus (Heckel, 1844), based on 214 specimens collected from Cauvery River in Peninsular India, were established. Sampling was carried out from December 2017 to December 2018 at around three months interval. The value of regression coefficient (b) ranged from 2.6147 (L. bata) to 3.2855 (L. dyocheilus). A new maximum length of 41 cm for L. porcellus has been recorded. For L. porcellus, LWR is established for the first time while for other species (except L. rohita); it is estimated for the first time from a peninsular river in India. Relative condition factor estimated for the five fish species did not show large scale variation (1.001 to 1.019).

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supporting

confidence: 60%

Length-weight relationship and relative condition factor of five Labeo spp. from river Cauvery in India

Mol¹,

Jaiswar²,

Panikkar³

et al. 2019

Indian J. Fish.

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“…The result for C. stewartii (2.98), however, is nearly similar to that of the FishBase database (2.99). Borah et al () studied the Assamese snakehead C. stewartii from the Brahmaputra River basin, reporting a b value of 2.917 for 37 individuals, nearly equal to the results of the present study and the FishBase record. SinghaBhagabati, Boruah, and Deka () studied the LWRs of the Ocellated Pufferfish L. cutcutia from the Diplai beel of Assam, reporting b values of 2.441 for sub‐adults, 3.002 for adult males and 3.318 for adult female fish.…”

Section: Discussionsupporting

confidence: 81%

Length–weight relationships of four indigenous fish species collected in Assam and Meghalaya, India

et al. 2019

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The length–weight relationships (LWRs) of four indigenous fish species; namely Parambassis baculis (Hamilton, 1822); Pethia gelius (Hamilton, 1822); Channa stewartii (Playfair, 1867); and Leiodon cutcutia (Hamilton, 1822) collected from the Ranganadi River in Assam, and the Simsang and Kynshi River in Meghalaya are presented in the present study. The value of the parameter b recorded for P. baculis = 3.347; P. gelius = 3.924; C. stewartii = 2.979; and L. cutcutia = 3.205, with regression coefficients (r2) of 0.993, 0.963, 0.983 and 0.955, respectively. Parameter a was 0.0124 for P. baculis, 0.0037 for P. gelius, 0.0098 for C. stewartii and 0.0273 for L. cutcutia. As information on the LWRs of these fish species is not available in the FishBase database, it should assist future researchers to better analyse the stock of these fishes.

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“…It is an established fact that, for an ideal fish, the value of b usually remains constant at 3.0 (Hile, 1936; Martin, 1949) and the departure of the b value from 3.0 is rare in adult fishes (Beverton & Holt, 1957). A number of intrinsic (gonad development, age, sex and genetic structure) and extrinsic factors (food availability, season and habitat characteristics) exert effect on b value of fishes (Borah et al., 2018).…”

Section: Discussionmentioning

confidence: 99%

Length–weight relationships of six indigenous fish species from the River Cauvery and its estuary, India

et al. 2021

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The present study estimated length–weight relationships (LWRs) for six indigenous fish species (Barilius gatensis, Salmostoma acinaces, S. boopis, Puntius amphibius, Hemibagrus punctatus and Ambassis miops) based on specimens collected from River Cauvery (including estuary) during July 2017–January 2020. The sampling surveys were carried out in three distinct sampling seasons, viz., the pre‐monsoon (March–May), the monsoon (July–October) and the post‐monsoon (November–February). Majority of the fish specimens dealt in the study were collected from multi‐meshed monofilament gill nets (mesh sizes 18, 30, 45, 60, 90, 110, 120 and 150 mm) operated by local fishers. For those sites situated in the protected areas, sampling was carried out by cast nets with prior permission from the local administration and the collected fishes were released back into river after length–weight measurements. The length measurements were noted as total length (TL) measured to the nearest 0.1 cm by using a digital Vernier caliper. A digital balance was used for weight measurements with an accuracy of 0.01 g. The study recorded a new maximum length of 48 cm for H. punctatus. The LWR data generated from the present study are significant for proper assessment of the stock status and their management, if collected together with other essential biological and physical parameters.

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Length-weight and length-length relationship of two endemic snakehead fish species from Brahmaputra river basin, Assam, India

Cited by 11 publications

References 11 publications

Length-weight relationship and relative condition factor of five Labeo spp. from river Cauvery in India

Length-weight relationship and relative condition factor of five Labeo spp. from river Cauvery in India

Length–weight relationships of four indigenous fish species collected in Assam and Meghalaya, India

Length–weight relationships of six indigenous fish species from the River Cauvery and its estuary, India

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