NOPR Collection:

First record of Halophila ovalis in the Haripur creek, East Coast of India

2015-01-01T00:00:00Z

Title: First record of Halophila ovalis in the Haripur creek, East Coast of India Authors: Mahapatro, Debasish; Behera, Durga Prasad; Naik, Subrat; Mishra, Rajani Kanta; Mishra, B.N. Abstract: Present study reports the first record of occurrence of a seagrass Halophila ovalis, family- Hydrocharitaceae and class-Liliopsida in the Haripur creek of the southern coast of Odisha. It was suggested that the shallow water region of this tidal creek provided a conducive environment for colonization of this particular sea grass species. This study also describes the morphological and habitat characteristics of the sea grass. Page(s): 118-120

Stock Assessment of white fish, Lactarius lactarius (Bloch and Schneider,1801) along Ratnagiri Coast of Maharashtra, India

2015-01-01T00:00:00Z

Title: Stock Assessment of white fish, Lactarius lactarius (Bloch and Schneider,1801) along Ratnagiri Coast of Maharashtra, India Authors: Pawase, A.S.; Metar, S.Y.; Sawant, M.S.; Barve, S.K.; Akhade, R.R.; Pai, R. Abstract: The study on the age, growth and mortality of white fish, Lactarius lactarius was carried out based on the length frequency data collected during August 2009 to August 2011. The asymptotic length ((L_∞)) and growth coefficient (K) were estimated as 366 mm and 0.685 yr^-1 respectively. The total, natural and fishing mortalities were 3.31, 1.30 and 2.01 yr^-1 respectively. The exploitation rate (U) and exploitation ratio (E) were calculated as 0.61 and 0.62 respectively. Though Emax obtained at 0.91, it is not advisable for a stock to be exploited at that level as in future, it would be detrimental. Page(s): 115-117

Changes in water, organic, inorganic and pigments contents in mangrove leaves (Avicennia marina) during decomposition under different field (Sandspit backwaters, Karachi) and laboratory conditions

2015-01-01T00:00:00Z

Title: Changes in water, organic, inorganic and pigments contents in mangrove leaves (Avicennia marina) during decomposition under different field (Sandspit backwaters, Karachi) and laboratory conditions Authors: Shafique, S; Siddiqui, P J A Abstract: Decomposition of Avicennia marina (Forsk) Vierh leaf litter was studied using litterbag technique in a mangrove stand at Sandspit backwaters, Karachi and also in the laboratory. Water content of litter under all experimental conditions showed a decreasing trend during decomposition. Under FMAC, LAAC reduction of water content was lower compare to FAC and LAC. Inorganic content of remaining decomposing leaves increases with time. Reverse is true for the organic matter. Similarly, reduction in organic matter starts from initial value of 90.41 g % and reaches its minimum at the end of experiment. Lowest organic content values observed in different experiment ranged from 45.46 - 60.93 g %. The value Chlorophyll decreased with elapsed time. Chlorophyll a appears to have degraded faster than chlorophyll b as indicated by the chl a : chl b ratio. Page(s): 110-114

Finfish diversity in Coleroon estuary, Southeast coast of India

2015-01-01T00:00:00Z

Title: Finfish diversity in Coleroon estuary, Southeast coast of India Authors: Bharadhirajan, P.; Murugan, S.; Gopalakershanan, A.; Murugesan, P. Abstract: Present study was undertaken to record diversity, species richness and species evenness of finfishes in Coleroon Estuary from May 2012 to April 2013. A total of 59 species were recorded which belonged to 9 Orders, 26 Families and 30 Genera. Among them Mugil cephalus was found most dominant species (23.5%). Values of Shannon diversity index, Simpson richness and Pielou's evenness for three zones varied from 1.5 to 3.2, 0.7 to 0.9 and 0.6 to 0.9 respectively. Maximum diversity and richness were recorded during summer (3.2), (0.93) (June-2012) and the lowest during monsoon season (1.5), (0.73) (November-2012). Percentage wise catches of fishes were in the Order Perciformes (85.42%) followed by Clupeiformes (6.60%), Siluriformes (2.47%), Gonorhynchiformes (1.83%), Pleuronectiformes (1.20%), Elopiformes (1.15%), Scorpaeniformes (0.99%), Beloniformes (0.35%) and Anguilliformes (0.19%). Maximum catches were in order Perciformes 79,508 kg and minimum catches was in Anguilliformes 180 kg. Page(s): 104-109