Study of Fish Exploitation Pattern of River Bharathapuzha, Kerala, India
Study of Fish Exploitation Pattern of River Bharathapuzha, Kerala, India
Date
2021
Authors
Renjithkumar, C. R.
Roshni, K.
Kurup, B. M.
Journal Title
Journal ISSN
Volume Title
Publisher
Society of Fisheries Technologists (India)
Abstract
A total of 31 finfish species belonging to 7 orders and
28 genera and one shell fish species were recorded
in the exploited pattern of Bharathapuzha river. Total
annual fish landing from the Bharathapuzha river
was quantified as 112.56 t. Highest landing was
recorded during the post-monsoon season and
lowest during the monsoon season. The main species
contributed to the landing are Dawkinsia filamentosa
(17.34 t), Systomus sarana (12.06 t), Hypselobarbus
kurali (9.89 t), Parambassis dayi (8.39 t) and Wallago
attu (7.61). Gibelion catla, Labeo rohita, Cirrhinus
mrigala (Indian major carps) and Oreochromis
mossambicus were the non-native species represented
in the exploited fishery. Gill nets, cast nets, seine nets
and hook and lines were the major fishing gears used
in the river. Catch per unit effort (CPUE) recorded
in gill net for major species were Pseudetroplus
maculatus (0.75 kg h-1), Devario aequipinnatus (0.5 kg
h-1), L. rohita (0.38 kg h-1), D. filamentosa (0.20 kg
h-1) and S. sarana (0.18 kg h-1). The highest CPUE
recorded in cast net was for Hypselobarbus kurali (0.51
kg h-1), Hyporhamphus xanthopterus (0.50 kg h-1),
Mystus vittatus (0.38 kg h-1) and W. attu (0.29 kg
h-1). In seine net high CPUE was recorded in Channa
striata (0.17 kg h-1), L. rohita (0.16 kg h-1) and Etroplus
suratensis (0.13 kg h-1).
Description
Keywords
Fishery, cyprinidae, non-native fishes, catch per unit effort