Larvivorous potentiality of Puntius tetrazona and Hyphessobrycon rosaceus against Culex vishnui subgroup in laboratory and field based bioassay.

ABSTRACT:

Objectives

This study assessed the predatory potentiality of two unexplored fishes, Puntius tetrazona and Hyphessobrycon rosaceus on Culex vishnui subgroup larvae in order to utilize natural resources to diminish mosquito population. Larval feeding rate was evaluated in laboratory under varying prey density and volume of water. The experiment was extended to semi field condition.

Results

Puntius tetrazona and H. rosaceus consumed from 66 to 600 and from 87 to 718 Cx. vishnui larvae respectively in laboratory condition at 10 prey density levels (100-1000 larvae) at an increment of 100 larvae at 2 l water volume. In semi field condition, a 78% reduction in larval density was observed at day 30 post introduction of P. tetrazona, whereas 91% reduction was noted on day 21 for H.

SUBMITTER: Barik M 

PROVIDER: S-EPMC6225676 | biostudies-literature | 2018 Nov

REPOSITORIES: biostudies-literature