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Titolo:
Biochemical stress responses in tissues of the prawn Macrobrachium malcolmsonii on exposure to endosulfan
Autore:
Bhavan, PS; Geraldine, P;
Indirizzi:
Bharathidasan Univ, Dept Anim Sci, Tiruchchirappalli 620024, Tamil Nadu, India Bharathidasan Univ Tiruchchirappalli Tamil Nadu India 620024 Nadu, India
Titolo Testata:
PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY
fascicolo: 1, volume: 70, anno: 2001,
pagine: 27 - 41
SICI:
0048-3575(200105)70:1<27:BSRITO>2.0.ZU;2-O
Fonte:
ISI
Lingua:
ENG
Soggetto:
FRESH-WATER PRAWN; FIELD CRAB; ACETYLCHOLINESTERASE ACTIVITY; SUBLETHAL CONCENTRATIONS; METAPENAEUS-MONOCEROS; BARYTELPHUSA-GUERINI; PENAEID PRAWN; FISH; GLUTATHIONE; CONSUMPTION;
Keywords:
GST; phosphatases; LDH; soluble protein; free amino acid; nucleic acids; SDS-PAGE; AchE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Life Sciences
Citazioni:
65
Recensione:
Indirizzi per estratti:
Indirizzo: Bhavan, PS Govt Arts Coll, Dept Zool, Dharmapuri 636705, Tamil Nadu, IndiaGovt Arts Coll Dharmapuri Tamil Nadu India 636705 Nadu, India
Citazione:
P.S. Bhavan e P. Geraldine, "Biochemical stress responses in tissues of the prawn Macrobrachium malcolmsonii on exposure to endosulfan", PEST BIOCH, 70(1), 2001, pp. 27-41

Abstract

This study was conducted to investigate the induction of biochemical stress responses in Macrobrachium malcolmsonii following exposure to endosulfan and to determine the most sensitive parameter of endosulfan-induced stress in this species of prawn. Intermolt juvenile prawns were exposed to three sublethal concentrations of endosulfan (10.6, 16.0, and 32.0 ng/L) for a period of 21 days. Samples were taken from the hemolymph, brain, hepatopancreas, gills, and muscle of respective prawns from each test and control group on 1, 8, 15, and 21 days of exposure. The content of glutathione S-transferase (GST) was found to be higher in test prawns than in controls. This suggests that there was an activation of a mechanism to detoxify endosulfan. However, the toxic effects of endosulfan were not fully neutralized, and, hence, there was evidence of impairments in various biochemical mechanisms. Biphasic alterations were noted in phosphatases and in lactate dehydrogenase (LDH) levels in tissues of rest prawns. The concentration of soluble protein in the hemolymph was found to be elevated, whereas this declined in othertissues of test prawns in comparison to controls. Elevation in the level of total free amino acid and decline in DNA and RNA levels in test prawns were recorded. Endosulfan toxicity resulted in breakdown of various polypeptides in tissues of test prawns. Thus, protein denaturation appeared to be one of the manifested toxic effects of endosulfan. The content of acetylcholinesterase (AchE) declined in test prawns. This reflects the disturbances ofbasic metabolic activities in test prawns. The grade of endosulfan-inducedbiochemical stress responses in rest prawns was in the order phosphatases > LDH > GST > protein denaturation > AchE. The present investigation records that endosulfan severely impairs various biochemical and physiological mechanisms in M. malcolmsonii and hence poses a threat to its survival, growth, and maturation. (C) 2001 Academic Press.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 02/04/20 alle ore 00:08:39