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Effect of cadmium in the gills of green tiger prawn, Penaeus semisulcatus

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Title Effect of cadmium in the gills of green tiger prawn,
Penaeus semisulcatus
Not Available
 
Creator Nammalwar,P
Sanil,N K
Sabu,A S
 
Subject Penaeus semisulcatus, cadmium, gills, acute toxicity
 
Description Not Available
The aim of this study was to determine the acute toxicity levels of cadmium for Penaeus semisulcatus
and elucidate the impact of this heavy metal on gills at two sublethal (250 and 500 μg L-1) levels for a
period of 14 days. The median lethal concentration level (LC50) of cadmium in 24, 48, 72 and 96 h for P.
semisulcatus were 8180, 5160, 4000 and 2680 μg L-1. The gills of the shrimps were dissected out and
processed for light and electron microscopic studies. The light microscopic studies revealed several
alterations in the histoarchitecture of the gills and the prominent changes include deformity of the
secondary gill lamellae, infiltration of hemocytes, malformation at the tip of gill filament, lifting of
lamellar epithelium, hyperplasia and swelling of the gill lamellae. The ultrastructural examination
exposed detachment of gill epithelium, formation of electron dense deposits in the cuticle, disrupted and
damaged microvilli, shrunken nucleus, vacuole formation, swollen mitochondria with disoriented cristae,
fragmented endoplasmic reticulum and numerous vacuoles with electron dense granules. These
alterations impair vital physiological functions, such as respiration and osmoregulation of the gills, which
in turn affect the survival of P. semisulcatus. Therefore, the present study suggests that efficient remedial
measures should be adopted to prevent the occurrence of cadmium contamination in the aquatic
environment.
Not Available
 
Date 2021-09-17T07:59:37Z
2021-09-17T07:59:37Z
2017
 
Type Article
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/63837
 
Language English
 
Relation Not Available
 
Publisher Not Available