Premium
Changes in ovary and testis and breeding fitness of the climbing perch, Anabas testudineus (Bloch, 1792), exposed to sub‐lethal concentrations of monocrotophos
Author(s) -
Mohapatra Sujata,
Kumar Rajesh,
Patnaik Srianga Tilak,
Mishra Choudhury Suryakant,
Sahoo Lakshman,
Sundaray Jitendra Kumar
Publication year - 2020
Publication title -
aquaculture research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.646
H-Index - 89
eISSN - 1365-2109
pISSN - 1355-557X
DOI - 10.1111/are.14657
Subject(s) - anabas testudineus , monocrotophos , biology , gonadosomatic index , perch , toxicology , zoology , pesticide , fishery , ecology , fish <actinopterygii> , population , fecundity , demography , sociology
Monocrotophos (MCP) is one of the organophosphate pesticides extensively used in agriculture and animal husbandry. The present study reports the effects of sub‐lethal concentrations of MCP on gonadosomatic index (GSI), gonadal histology and breeding fitness of the fish Anabas testudineus . The fish were exposed to three sub‐lethal concentrations of monocrotophos (T1: 3.5 mg/L, T2: 5.3 mg/L and T3: 10.6 mg/L) for 45 days with 12 fish (males and females in equal numbers) in each tank, and one group was kept as control (C) without any treatment. GSI decreased in all treatment groups in comparison with control. Significant decrease in fertilization and hatching rate was observed at all concentrations in comparison with control on 15, 30 and 45 days of monocrotophos exposure. The decreased vitellogenesis, disruption of follicular wall and oocyte atresia were observed in all the treated females at 30 and 45 days of exposure. Rupture of seminiferous tubules was noticed in all the treated males irrespective of exposure periods. The results thus indicated that monocrotophos could deleteriously impact the gonadal structure and function in A. testudineus, which could seriously impact the reproductive success of the animal.