Occurrence of infestation with the isopod, Alitropus typus M. Edwards (Crustacea: Flabellifera: Aegidae) on commercially important freshwater fishes of Kerala, India

Abstract

Rapidly rising temperatures and increasing organic load in the inland and coastal waters has led to a signi cant increase in parasite population. The isopod Alitropus typus infestation on sh in these waters have become more frequent, causing mortalities in both wild and cultured shes. The present study was aimed to investigate the infestation on different sh hosts, mean intensity, prevalence, environmental in uences on the parasite abundance and the histopathological changes it causes in the host. A total of 219 isopod specimens were collected from 149 infested shes in two districts of Kerala, India. Among the different sh hosts, Channa striata was found to be the most susceptible, followed by Catla catla,

Water quality and fish health in the upper asahan river in supporting the sustainability of fish resources

“…Decreased water quality results in a high stress response in fish making them susceptible to parasitic infections. [12] explained that rapidly rising temperatures and increased organic loads in inland waters led to a significant increase in parasite populations. The isopod infestation of Alitropus typus in fish in these waters is becoming more and more frequent, and causes the death of both wild and fish farming.…”