Sub-lethal impact of carbaryl on food utilization in the freshwater prawn Macrobrachium malcolmsonii

This study determines the toxic effect of carbaryl (Sevin50% W.P) on the food utilization parameters in intermoult juveniles of the prawn, Macrobrachium malcolmsonii. The prawns (4.5-5.0 cm in length and 1.0-1.25 g wet wt.) were exposed to three sub-lethal concentrations of carbaryl (5.15, 7.73 and...

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Published in:Journal of environmental biology 2011-05, Vol.32 (3), p.369-373
Main Authors: Bhavan, P Saravana, Geraldine, P, Sowdeswari, R
Format: Article
Language:English
Subjects:
Absorption
Ammonia
Animals
Bioenergetics
Carbaryl
Carbaryl - toxicity
Dose-Response Relationship, Drug
Energy
Environmental science
Excretion
Feeding Behavior - drug effects
Feeding rates
Food
Freshwater
Insecticides - toxicity
Macrobrachium malcolmsonii
Palaemonidae - drug effects
Palaemonidae - physiology
Water Pollutants, Chemical - toxicity
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Geraldine, P
Sowdeswari, R
description This study determines the toxic effect of carbaryl (Sevin50% W.P) on the food utilization parameters in intermoult juveniles of the prawn, Macrobrachium malcolmsonii. The prawns (4.5-5.0 cm in length and 1.0-1.25 g wet wt.) were exposed to three sub-lethal concentrations of carbaryl (5.15, 7.73 and 15.47 microgl-1) for duration of 40 days. The toxic medium was renewed daily. The prawns were fed ad libitum with known energy quantity of boiled goat liver on daily basis. The overall wet weight gain was calculated. The energy lost through unconsumed food (15-60%), faeces (15-109%), ammonia excretion (9-27%) and moults (13-26%) of the prawns were calculated. The feeding rate, the rate and efficiency of absorption, the metabolic and food conversion rates and the gross and net food conversions efficiencies were found to be significantly declined (p
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The prawns (4.5-5.0 cm in length and 1.0-1.25 g wet wt.) were exposed to three sub-lethal concentrations of carbaryl (5.15, 7.73 and 15.47 microgl-1) for duration of 40 days. The toxic medium was renewed daily. The prawns were fed ad libitum with known energy quantity of boiled goat liver on daily basis. The overall wet weight gain was calculated. The energy lost through unconsumed food (15-60%), faeces (15-109%), ammonia excretion (9-27%) and moults (13-26%) of the prawns were calculated. The feeding rate, the rate and efficiency of absorption, the metabolic and food conversion rates and the gross and net food conversions efficiencies were found to be significantly declined (p&lt;0.05) in test prawns when compared to that of the control. The energy lost through faeces, ammonia excretion and exuvia was found to be significantly elevated (p&lt;0.05) in test prawns than that of the control. The effectof carbaryl on the bioenergetics parameters was severe in the highest sub-lethal concentration, less in the intermediate concentration and least in the lowest sub-lethal concentration. The results indicated that decrease in feeding, absorption, metabolism and food conversion are interdependent and toxicity of carbaryl diverting energy from production to maintenance pathways, which ultimately resulting in declined growth of M. malcolmsonii.</description><identifier>ISSN: 0254-8704</identifier><identifier>EISSN: 2394-0379</identifier><identifier>PMID: 22167951</identifier><language>eng</language><publisher>India: Triveni Enterprises</publisher><subject>Absorption ; Ammonia ; Animals ; Bioenergetics ; Carbaryl ; Carbaryl - toxicity ; Dose-Response Relationship, Drug ; Energy ; Environmental science ; Excretion ; Feeding Behavior - drug effects ; Feeding rates ; Food ; Freshwater ; Insecticides - toxicity ; Macrobrachium malcolmsonii ; Palaemonidae - drug effects ; Palaemonidae - physiology ; Water Pollutants, Chemical - toxicity</subject><ispartof>Journal of environmental biology, 2011-05, Vol.32 (3), p.369-373</ispartof><rights>Copyright Triveni Enterprises May 2011</rights><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/22167951$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Bhavan, P Saravana</creatorcontrib><creatorcontrib>Geraldine, P</creatorcontrib><creatorcontrib>Sowdeswari, R</creatorcontrib><title>Sub-lethal impact of carbaryl on food utilization in the freshwater prawn Macrobrachium malcolmsonii</title><title>Journal of environmental biology</title><addtitle>J Environ Biol</addtitle><description>This study determines the toxic effect of carbaryl (Sevin50% W.P) on the food utilization parameters in intermoult juveniles of the prawn, Macrobrachium malcolmsonii. 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ispartof Journal of environmental biology, 2011-05, Vol.32 (3), p.369-373
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2394-0379
language eng
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source EZB Electronic Journals Library
subjects Absorption
Ammonia
Animals
Bioenergetics
Carbaryl
Carbaryl - toxicity
Dose-Response Relationship, Drug
Energy
Environmental science
Excretion
Feeding Behavior - drug effects
Feeding rates
Food
Freshwater
Insecticides - toxicity
Macrobrachium malcolmsonii
Palaemonidae - drug effects
Palaemonidae - physiology
Water Pollutants, Chemical - toxicity
title Sub-lethal impact of carbaryl on food utilization in the freshwater prawn Macrobrachium malcolmsonii
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