Studies on the coastal water quality in relation to the health of green mussel Perna viridis (Linnaeus)

Sasikumar, Geetha (2007) Studies on the coastal water quality in relation to the health of green mussel Perna viridis (Linnaeus). PhD thesis, Mangalore University, Mangalagangothri - 574199,.

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Abstract

The thesis presents an account on the physiological response of green mussel, Perna viridis (Linnaeus) to the temporal and spatial variations in the environmental parameters of the mussel beds. Condition index, a nonspecific biomarker which integrates physiological responses of mussels to multiple stressors is evaluated as the intrinsic response to the variable environment. The cytological response in the mussels is also elucidated with reference to the trace metal and organochlorine concentrations of the shellfish waters. Baseline information on the sanitary quality of the coastal waters and the extent of faecal contamination of the mussel beds is also presented. • The study area covers the mussel beds off Someshwara and Surathkal of Dakshina Kannada District, Kamataka, where green mussel, P. viridis contributes to a significant fishery of commercial importance. • The variations in water temperature, salinity, dissolved oxygen (DO), pH and the qualitative and quantitative variations in seston of the mussel beds were studied to evaluate their temporal and site-specific differences between the two mussel beds. • With the onset of monsoon a sharp decline in the water temperature, salinity and pH of the mussel beds was noticed. Bottom water temperature at Someshwara mussel beds varied between 2S.20°C in August and 31.1S0C in April. At Surathkal mussel beds, water temperature ranged between 26. 10°C in August and 31.4SoC in May. The mean water temperature of the mussel beds varied significantly (p<O.OS)

Item Type:Thesis (PhD)
Supervisor(s):Krishnamurthy, M
Uncontrolled Keywords:coastal water quality; health; green mussel; Perna viriais; Linnaeus
Subjects:Marine Environment
Theses
Molluscan Fisheries > Mussel culture
Divisions:CMFRI-Cochin > Marine Capture > Molluscan Fisheries
ID Code:7668
Deposited By:Dr. V Mohan
Deposited On:19 Feb 2011 17:34
Last Modified:21 Jan 2014 12:29

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