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Titolo:
ENVIRONMENTAL PHYSIOLOGY OF THE MOLE CRAB EMERITA-ASIATICA, AT A POWER-PLANT DISCHARGE AREA ON THE EAST-COAST OF INDIA
Autore:
SURESH K; AHAMED MS; DURAIRAJ G; NAIR KVK;
Indirizzi:
UNIV MADRAS,DEPT ZOOL MADRAS 600025 TAMIL NADU INDIA INDIRA GANDHI CTR ATOM RES,WATER & STEAM CHEM LAB KALPAKKAM 603102 TAMIL NADU INDIA
Titolo Testata:
Environmental pollution
fascicolo: 2, volume: 88, anno: 1995,
pagine: 133 - 136
SICI:
0269-7491(1995)88:2<133:EPOTMC>2.0.ZU;2-N
Fonte:
ISI
Lingua:
ENG
Soggetto:
HEATED EFFLUENT;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
18
Recensione:
Indirizzi per estratti:
Citazione:
K. Suresh et al., "ENVIRONMENTAL PHYSIOLOGY OF THE MOLE CRAB EMERITA-ASIATICA, AT A POWER-PLANT DISCHARGE AREA ON THE EAST-COAST OF INDIA", Environmental pollution, 88(2), 1995, pp. 133-136

Abstract

Cage experiments at the discharge area of Madras Atomic Power Station(MAPS) facilitated studies of thermal tolerance in Emerita asiatica. At the laboratory, oxygen consumption at various temperatures and varying salinities was also investigated. In the field 100% mortality of crabs was recorded at the Condenser Cooling Water Pumps (CCWP) discharge site compared to no mortality at the Processed Sea Water Pumps (PSWP) sire. This observation implicated temperature as a stress factor at the CCWP outfall, because other factors, including residual chlorine and water velocity, were the same at the PSWP and CCWP sites. Laboratory experiments on tolerance revealed that 38.5 degrees C was lethal to mole crabs. The time taken for 100% mortality decreased as the temperature increased from 35 to 40 degrees C. Oxygen metabolism showed a progressive increase with temperature from 29 to 36 degrees C, and declined at 37 degrees C. The influence of salinity on oxygen consumption was marginal at salinities of 20 to 35 parts per thousand but, when reduced to 15 parts per thousand, the oxygen consumption declined. The present study thus indicates that temperature could be the lethal factor,determining the distribution of mole crabs near the power station, where water temperature can exceed 40 degrees C.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 28/09/20 alle ore 14:22:35