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Co-Authors
- Debangshu Chakraborty
- M. J. D'Souza
- R. Bastia
- Jaydip Guha
- B. S. Mishra
- Dipayan Guha
- Sanjay Das
- C. Srikarni
- N. C. Ghose
- Barna Chakraborty
- A. K. Chandra
- Karankumar K. Ramteke
- Asha T. Landge
- A. K. Jaiswar
- G. Deshmukhe
- R. K. Renjith
- Suman Kumari
- Z. J. Abidi
- Tarkeswar Kumar
- Gaihiamngam Kamei
- G. B. Sreekanth
- P. U. Zacharia
- Surendra Kumar Ahirwal
- Swatipriyanka Sen
- E. Vivekanandan
- Shoba J. Kizhakudan
- Gyanaranjan Dash
- G. Jayshree
- Mayura Khot
- P. Sivaperumal
- Neeta Jadhav
- Anil Pawase
- Tasaduq H. Shah
- Tarkeshwar Kumar
- R. K. Sadawarte
- K. M. Sandhya
- Sangita A. Bharadiya
Journals
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z All
Chakraborty, S. K.
- Corporate Values, Personal Values, Cultural Congruence and Ethics: A Critical Exploration
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Authors
Affiliations
1 BIT (Mcsra, Ranchi) Extension Centre, Kolkata, IN
2 IIM Kolkata, IN
1 BIT (Mcsra, Ranchi) Extension Centre, Kolkata, IN
2 IIM Kolkata, IN
Source
<i>Metamorphosis</i> A Journal of Management Research, Vol 4, No 2 (2005), Pagination: 138-156Abstract
This paper attempts to explore critically, some differences between 'corporate values' and 'personal values', as indicated by the values statements of a few well-known companies, both in the West and the East. It appears that values chokes by Western companies tend to represent primarily 'corporate values', which emphasize the objective character of the organization. Indian companies seem to follow this lead. But most companies in other Asian countries appear to select values in terms of subjective character of individuals that should augment the performance effectiveness of organizations. `Corporate values' tend implicitly to accord priority to objective or doing skills over subjective or being values. But in 'personal values' the subjective values dimension receives greater accent than the objective. This is because decisions and actions taken by 'high skills' persons may become unethical if their driving values originate from questionable subjective motives (values). Values are the cause, ethicality or unethicality the effect. Moreover, in the ultimate analysis 'personal values' at the very top have a pronounced influence on the tone of 'corporate values' for the organization as a whole. Besides, both Western and non-Indian Asian companies show close alignment of corporate or personal values with the values of the wider society to which they belong.
- Petrology of Early Palaeozoic Lamprophyres from Schirmacher Oasis, East Antarctica
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Authors
Affiliations
1 Antarctica Division, Geological Survey of India, NH 5P, N.I.T., Faridabad- 121001, IN
2 Central Petrological Laboratory, Geological Survey of India, 15 A & D Kyd Street, Calcutta-700016, IN
1 Antarctica Division, Geological Survey of India, NH 5P, N.I.T., Faridabad- 121001, IN
2 Central Petrological Laboratory, Geological Survey of India, 15 A & D Kyd Street, Calcutta-700016, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 56, No 6 (2000), Pagination: 593-604Abstract
Lamprophyre dykes are conspicuous within the Proterozoic high-grade metamorphic rocks of Schirmacher Oasis. These dykes have been classified chemically into alkaline and calc-alkaline types on the basis of K2O/Na2O ratio and CIPW norm. The close association, age and geochemical similarities of both the-lamprophyres and melasyenite in thc area indicale their consanguinity and derivation from same source region. These lamprophyres have a high concentration of incornpatible elements like Ba, Rb, Sr and Zr. These rocks also have a high Mg# and depict a negative Ta-Nb-Ti anomaly. The chondrite normalised REE patterns show fractionated trends with large variation in LREE and small variation in HREE concentration in both the rock groups. The calc-alkaline lamprophyre is more enriched in LREE than the alkaline lamprophyre.
It is proposed that metasomatised phlogopite-bearing enriched mantle source has undergone partial melting to generate lamprophyric magma. This magma is generated in a continental within-plate tectonic setting. The collision of East and West Gondwana during Pan-African orogeny, resultant overthickening of continental lithosphere and generation of widespread magmatic activity in the region due to partial melting has culminated in the intrusion of lamprophyres around 450 Ma ago.
Keywords
Lamprophyre, Melasyenite, Schirmacher Oasis, East Antarctica, Pan-African Orogeny.- Depositional Architecture of Mio-Pliocene Sequences in Offshore Bengal Basin
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Authors
Affiliations
1 Reliance Industries Ltd , Mumbai, IN
1 Reliance Industries Ltd , Mumbai, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 67, No Spl Iss 5 (2006), Pagination: 575-583Abstract
Bengal Basin located along the northeast coast of India has a thick pile of MIO-Pliocene sediments fed by a number of large rivers like Ganga, Brahmaputra, Mahanadi and smaller rivers like Subarnarekha, Baitaram and Brahmani. The basin covers an area of 40,000 sq km in the Bay of Bengal. The sediments in the present day shelf area exhibit a complex deposition history with unique juxtaposition of shallow and deep water sediments in the form of deltas, distributary channels, Pro-Delta sediments and incised canyons, filled up with channel-levee complex deposits.A detailed study was carried out on the morphology and architecture of the different depositional elements and units utilizing different vintages of 2D/3D seismic and data from drilled wells Geo-Body mapping and attribute studies reveal finer details of the complex system Special seismic attributes such as spectrally decomposed amplitude, waveform classifier and 'sweetness' (amplitude by square root of frequency) were quiet helpful in understanding the morphological details of the system. The following depositional elements have been brought out
•Delta-Distributary channel complex associated with incised valley and tidal inlets.
•Shelfal Canyon cut and fill sequences.
o Simple canyon fills Simple "V" shaped cuts with fills in the form of low to moderate sinuous.
channels.
o Complex Canyon cut and fills Numerous, repeated canyon cuts caused by Mass-Wasting with intervening fills in the form of deep water to Sub-Aerial channels and deltaic progradational deposits.
•Deep-Water Channel Complex Fed by large canyon up-dip. These depositional elements do not form part of the canyon fill, but occur down-dip.
The sand and si1t lithological distribution in the above depositional complexes form the predominant hydrocarbon reservoir units. The numerous reservoir bodies within the above units of varying lateral and vertical extents, are expected to hold the future exploration potential in this frontier basin.
Keywords
Morphology, Architecture, Bengal Basin.- Alkali Basalt of Kachchh: its Implication in the Tectonic Framework of Mesozoic of Western India
Abstract Views :44 |
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Authors
Affiliations
1 Geochronology and Isotope Geology Division, Geological Survey of India, 15 A & B, Kyd Street, Kolkata - 700 016, IN
2 Geological Survey of India, Operation Gujarat, Gandhinagar - 382 093, IN
3 Central Petrological Laboratories, Geological Survey of India, 15 A & B, Kyd Street, Kolkata - 700 016, IN
1 Geochronology and Isotope Geology Division, Geological Survey of India, 15 A & B, Kyd Street, Kolkata - 700 016, IN
2 Geological Survey of India, Operation Gujarat, Gandhinagar - 382 093, IN
3 Central Petrological Laboratories, Geological Survey of India, 15 A & B, Kyd Street, Kolkata - 700 016, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 66, No 5 (2005), Pagination: 599-608Abstract
Field evidences in Kachchh show that alkali basalts occur as flows over Mesozoic sediments. The top parts of Mesozoic Bhuj Sandstone often carry scoria and lapilli related to alkali basalt magmatism indicating that alkali magmatism and sedimentation went side by side. Tholente flows occur as blanket over both Mesozoic sediments and alkali basalt bodies.Evidences are provided to show that alkali basalt magmatism in Kachchh was not only an earlier episode than tholente emplacement, it also predates the closing of Kachchh Mesozoic basin and seems to support a protracted period of Deccan magmatism (70 - 60 Ma). The study also shows that huge concentration of alkali basalt in the western Kachchh mainland is associated to a zone of transtension related to the rifting of Kachchh basin. Alkali basalt bodies and whole of Mesozoic sequence were affected by reverse faults related to closure of Kachchh basin with development of series of hanging wall anticlinal and footwall synclinal structures.
Keywords
Alkali Basalt, Tholente, Flow, Plug, Releasing Bend, Kachchh.- Chemistry of Blotites from Pelitic Schists and Granitic Rocks of McCluskieganj, District Palamau, Bihar
Abstract Views :31 |
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Authors
Affiliations
1 Department of Geology, Patna University, Patna, IN
1 Department of Geology, Patna University, Patna, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 17, No 3 (1976), Pagination: 322-331Abstract
Composition of biotites from the pelitic schists and granitic rocks of McCluskieganj indicate that the former is rich in magnesium and the latter in iron; their Mg-Fe content is controlled by the composition of the respective host rock. The study of biotite of granitic rocks suggests that oxygen fugacites which prevailed during crystallization closely followed the QFM buffer. Positive correlation of Na between the co-existing K-feldspar and biotite in the granitic rocks, indicates that equilibrium conditions had reached during crystallization of these minerals. Experimental results of a porphyritic granite show that the rock was formed at the 'minimum melt' condition (655°C at PH20 = 4 kb).- Effect of Integrated Nutrient Supply on Growth, Leaf Yield and Field Performance of Mulberry (Morus alba) under Semi Irrigated Lateritic Soil Condition of West MidNapur District, West Bengal
Abstract Views :35 |
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Authors
Affiliations
1 Department of Zoology, Vidyasagar University, West Midnapur, West Bengal, IN
2 Central Sericultural Research and Training Instiitute, West Bengal, IN
1 Department of Zoology, Vidyasagar University, West Midnapur, West Bengal, IN
2 Central Sericultural Research and Training Instiitute, West Bengal, IN
Source
Journal of Environment and Sociobiology, Vol 5, No 2 (2008), Pagination: 221-226Abstract
A field experiment was conducted during 2004-06 to study the effect of organic manures along with bio-fertilizers and reduced doses of chemical fertilizers on growth and leaf yield of mulberry, belonging to the variety S1635 in lateritic soil condition with limited irrigation of West Midnapur areas having around pH 5.6. However plant height, number of tiller, leaf area, leaf yield, leaf moisture and total soluble protein were found high owing to application of different organic residues along with biofertilizers and reduced doses of chemical fertilizers. Among organic manures poultry litters along with biofertilizers with reduced dose of mineral fertilizers significantly increased leaf yield (11446.50 kg/ha/year) which is 5.76% over control. Application of organic manure like poultry litter on S1635 mulberry variety can reduce nitrogenous fertilizers (168 kg/ha/year) and 60% phosphatic fertilizers (60 kg/ha/year) over recommended dose (336 kg/ha/year, 180 kg/ha/year respectively) without any detrimental effect and could save Rs. 2440.00 /ha/year by curtailing the cost of cultivation by 6.75%.Keywords
Mulberry, Vermicompost, Poultry Manure Azotobactor, Arbuscular, Micorrhizal Fungi.- A Study of Transport Related Noise Pollution in Asansol Town, West Bengal Using Modelling Techniques
Abstract Views :52 |
PDF Views:1
Authors
Affiliations
1 Department of Physics, Banwarilal Bhalotia College, Asansol-71304, W.B., IN
1 Department of Physics, Banwarilal Bhalotia College, Asansol-71304, W.B., IN
Source
Nature Environment and Pollution Technology, Vol 6, No 4 (2007), Pagination: 601-607Abstract
With rapid urbanization of our cities and towns and resultant increase in the number of vehicles on roads, noise pollution is growing at an alarming rate. About 60% of total noise in the any urban environment can be credited to road traffic. The objective of the present study was to model and predict the road traffic noise and compare the results with observed values in an urban environment. Two models, namely, 'Calculation of Road Traffic Noise' (CORTN of U.K.) and 'Federal Highway Administration' (FHWA of U.S.A.) were used in the study. The study area selected for the investigation was Asansol town, an urban-industrial town, situated in eastern India. The values predicted by each of the models were analysed and compared with observed data collected at ten locations in the study area. Three tests, namely, 't'-test, correlation coefficient (r) and deviation between predicted and observed values was used to validate the modelling results. Based on the test criterions, statistical validation and comparison with other similar works, it can be said that both models gave acceptable results under Indian road conditions, with certain degree of error. The CORTN model (r = 0.8313) provided better prediction than the FHWA model (r = 0.8031). The deviation range of the CORTN was also lower 1- 4 db(A) against the FHWA predicted range of 1-6 db(A). Refinement of the model inputs is required as per Indian road conditions to enhance the quality of prediction.Full Text
- Taxonomic Differentiation of Goatfishes (Family-Mullidae) Based on Morphological Traits and Hard Parts
Abstract Views :32 |
PDF Views:15
Authors
Karankumar K. Ramteke
1,
Asha T. Landge
1,
A. K. Jaiswar
1,
S. K. Chakraborty
1,
G. Deshmukhe
1,
R. K. Renjith
2
Affiliations
1 ICAR-Central Institute of Fisheries Education, Versova, Andheri (W), Mumbai - 400 061, IN
2 ICAR-Central Institute of Fisheries Technology, Kochi-682 029, IN
1 ICAR-Central Institute of Fisheries Education, Versova, Andheri (W), Mumbai - 400 061, IN
2 ICAR-Central Institute of Fisheries Technology, Kochi-682 029, IN
Source
Indian Journal of Geo-Marine Sciences, Vol 47, No 2 (2018), Pagination: 381-389Abstract
A comparative evaluation of morphometric characters of goatfishes collected from different parts of India was conducted in order to discriminate them. Among the body ratios the proportion of body depth to standard length was found to be important that varied in the range of 11-39 %, with maximum (34-39 %) in Upeneus guttatus and minimum (11-26 %) in U. moluccensis. Among meristic characters number of dorsal fin spine differed, it was 8 in all the species except in U. guttatus where it was 7. Gill rakers present on lower limb of first arch were highest in U. sulphureus, U. moluccensis, Parupeneus indicus (18-22); lowest number was in U. sundaicus (13-15) followed by U. tragula (14-16). Highest numbers of lateral line scales were recorded in U. taeniopterus (36-38) and lowest in U. guttatus (28-30). Discriminant function analysis for ten morphometric characters gave misclassification of 0% for P. indicus, U. guttatus, U. sulphereus, U. sundaicus, U.tragula, U.vittatus and 3% for U. moluccensis, 6% for U. taeniopterus. Wedge shaped otolith (sagitta) was found in U. guttatus and P. indicus, oval in U. sulphureus, elliptic to truncate anteriorly in U. vittatus, fusiform and serrated margins in U. moluccensis, elliptic to truncate anteriorly for U. sundaicus and U. taeniopterus. Rostrum short, slightly flattened, antirostrum poorly defined in U. tragula. In U. moluccensis parietal crest was poorly developed. In U. tragula and U. moluccensis, pterosphenoid was not in direct contact with lateral ethmoid, and pterosphenoid joined to basisspenoid in U. vittatus and U. guttatus.Keywords
Morphology, Meristic, Otolith, Osteology and Goatfishes.Full Text
References
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- Comparative Osteology Based on Premaxillary Bone of Sciaenid Fishes Found in Indian Waters
Abstract Views :27 |
PDF Views:24
Authors
Suman Kumari
1,
A. K. Jaiswar
2,
Z. J. Abidi
2,
S. K. Chakraborty
2,
Tarkeswar Kumar
3,
Gaihiamngam Kamei
4
Affiliations
1 ICAR-Central Inland Fisheries Research Institute, Monirampur, Barrackpore, Kolkata-700120, IN
2 ICAR- Central Institute of Fisheries Education (Deemed University) Panch Marg, Yari Road Andheri (West), Mumbai-400 061, IN
3 ICAR- ICAR Research Complex for Eastern region, Patna-800014, IN
4 ICAR-Central Institute of Fisheries Technology CIFT Junction, Willingdon Island Matsyapuri P.O., Cochin-682 029, Kerala, IN
1 ICAR-Central Inland Fisheries Research Institute, Monirampur, Barrackpore, Kolkata-700120, IN
2 ICAR- Central Institute of Fisheries Education (Deemed University) Panch Marg, Yari Road Andheri (West), Mumbai-400 061, IN
3 ICAR- ICAR Research Complex for Eastern region, Patna-800014, IN
4 ICAR-Central Institute of Fisheries Technology CIFT Junction, Willingdon Island Matsyapuri P.O., Cochin-682 029, Kerala, IN
Source
Indian Journal of Geo-Marine Sciences, Vol 47, No 2 (2018), Pagination: 395-401Abstract
Present study consists the morphological characters of premaxillary bones of six genera and twelve species of the family Sciaenidae to provide a baseline to compare with other genera of the family and also to validate the taxa assigned to the genus which could be useful to make inferences about the phylogeny of the family. Morphometric measurement of premaxillary bone were measured the length of the lower margin of the horizontal part of the premaxillary (L), length of the vertical part of the premaxillary along the ascending process (M) and length from anterior corner of the premaxillary process to posterior tip of the horizontal part of the premaxillary (N).Inter- and intra-specific relationships between these species were also evaluated using multivariate analysis, standard discriminante function analysis and cluster analysis. Premaxillary along the ascending process (M) and length from anterior corner of the premaxillary process to posterior tip of the horizontal part of the premaxillary (N).Keywords
Morphology, Premaxillary, Villiform, Sciaenidae.Full Text
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- An Inventory on the Coastal Finfish and Shellfish Species of Zuari Estuary, Southwest Coast of India
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Authors
Affiliations
1 ICAR-Central Coastal Agricultural Research Institute, Old Goa, Goa, 403 402, IN
2 ICAR-Central Institute of Fisheries Education, Mumbai, Maharashtra, 400 061, IN
3 ICAR-Central Marine Fisheries Research Institute, Kochi, Kerala, 682 021, IN
1 ICAR-Central Coastal Agricultural Research Institute, Old Goa, Goa, 403 402, IN
2 ICAR-Central Institute of Fisheries Education, Mumbai, Maharashtra, 400 061, IN
3 ICAR-Central Marine Fisheries Research Institute, Kochi, Kerala, 682 021, IN
Source
Indian Journal of Geo-Marine Sciences, Vol 47, No 5 (2018), Pagination: 945-958Abstract
Assessment of finfish and shellfish species were carried out for a period of three years through continuous surveys (400 gillnet fishing experiments) with a total fishing effort of 100 fishing days along the Zuari estuary. This study yielded 286 finfish and shellfish species comprising of 156 demersal fish, 68 pelagic fish, 38 molluscan and 24 crustacean species. The species observed in this study covered all the trophic levels in the food web as well as the ecologically vulnerable and less resilient species (20-25%). Majority of the commercially important species of Zuari estuary were also collected in this study contribute to 70% of the catch.Keywords
Zuari Estuary, Goa, Inventory, Species, Shellfish, Finfish.Full Text
References
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- Biometric Analysis of Oil Sardine, Sardinella longiceps (Valenciennes, 1847) From Mumbai Coast of Maharashtra, India
Abstract Views :19 |
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Authors
Affiliations
1 ICAR-Research Complex For Eastern Region, Versova, Andheri (West), Mumbai-400061, IN
2 Central Institute of Fisheries Education, Versova, Andheri (West), Mumbai-400061, IN
1 ICAR-Research Complex For Eastern Region, Versova, Andheri (West), Mumbai-400061, IN
2 Central Institute of Fisheries Education, Versova, Andheri (West), Mumbai-400061, IN
Source
Indian Journal of Geo-Marine Sciences, Vol 46, No 9 (2017), Pagination: 1810-1817Abstract
Measurements of 785 specimens consisting of 378 male and 407 female were recorded during August 2013 to May 2014. The size of males ranged from 107 to 203 mm and weighed between 9.63 to 67.61g, while of females, ranged from 109 to 208 mm in length and 7.98 to 66.45g in weight. Among the compared characters, coefficient of correlation (r) was highest for total length against standard length (0.9597) and lowest for head length against body depth (0.7422). Based on the present investigation on meristic characters, the fin formula can be written as B5-6 D14-18 P12-16 V8-9 A12-16 C20-26. The length-weight relationship was established as W= 0.000001609 L3.3209 for male, W=0 .000001517 L3.3378 for female and W= 0.000001474 L3.3408 for pooled, indicating positive allometric relationship. However, condition factor suggested the species to be in average condition throughout the year in both sexes except the month of May.Keywords
Sardinella longiceps, Morphometric, Meristic, Length-Weight Relationship, Condition Factor, Mumbai, Maharashtra.Full Text
- Stock Structure Analysis of Japanese Threadfin Bream, Nemipterus japonicus (Bloch, 1791) Along the Indian Coast Based on Truss Network Analysis
Abstract Views :19 |
PDF Views:18
Authors
Affiliations
1 ICAR-Central Coastal Agricultural Research Institute, Old Goa, Goa-403402, IN
2 ICAR-Central Institute of Fisheries Education, Mumbai-400061, Maharashtra, IN
1 ICAR-Central Coastal Agricultural Research Institute, Old Goa, Goa-403402, IN
2 ICAR-Central Institute of Fisheries Education, Mumbai-400061, Maharashtra, IN
Source
Indian Journal of Geo-Marine Sciences, Vol 46, No 9 (2017), Pagination: 1836-1841Abstract
Fish samples were collected from four locations, two each from west and east coast of India. Thirty six morphometric distances were measured from each individual using a nine point truss network system and the canonical discriminant analysis showed that the distances along the mid body region are useful for differentiating these fish stocks along the Indian coast. Discriminant function analysis revealed 79.18% and 69.15% classification for coasts and locations with Kakinada stock turned out to be the well-defined group. The study indicated more than one stock of this species along east and west coasts.Keywords
Japanese Threadfin Bream, Nemipterus japonicas, Stock Structure, Truss Network System, Canonical Discriminant Analysis, Discriminant Analysis.Full Text
- Population Dynamics and Stock Assessment of Milk Shark, Rhizoprionodon acutus (Ruppell, 1837) Along Gujarat Coast of India
Abstract Views :11 |
PDF Views:19
Authors
Swatipriyanka Sen
1,
S. K. Chakraborty
2,
E. Vivekanandan
3,
P. U. Zacharia
4,
Shoba J. Kizhakudan
3,
A. K. Jaiswar
2,
Gyanaranjan Dash
1,
G. Jayshree
1
Affiliations
1 Veraval Regional Centre of CMFRI, Veraval-362269, IN
2 Central Institute of Fisheries Education (CIFE), Mumbai-400061, IN
3 Madras Research Centre of CMFRI, Chennai-600028, IN
4 Demersal Fisheries Division, CMFRI, Cochin-682018, IN
1 Veraval Regional Centre of CMFRI, Veraval-362269, IN
2 Central Institute of Fisheries Education (CIFE), Mumbai-400061, IN
3 Madras Research Centre of CMFRI, Chennai-600028, IN
4 Demersal Fisheries Division, CMFRI, Cochin-682018, IN
Source
Indian Journal of Geo-Marine Sciences, Vol 46, No 5 (2017), Pagination: 936-946Abstract
Stock assessment of Rhizoprionodon acutus (Ruppell, 1837) was made along with a few biological characteristics in the commercial landings during 2012-2014 from Gujarat waters of India to understand the population dynamics and stock status of the species. L∞, K and t0 estimated were 93.8 cm, 0.32 yr-1 and -1.3 yr, respectively. Total mortality rate (Z), fishing mortality rate (F) and natural mortality rate (M) were estimated as 1.0 yr-1, 0.39 yr-1 and 0.61 yr-1, respectively. Length at capture (Lc50) and length at maturity (Lm50) were estimated as 50 cm and 61 cm respectively, which indicate that most of the sharks are exploited before attaining the sexual maturity. Length-weight relationship showed growth was isometric. The species was a continuous breeder and showed peak recruitment during May. The current exploitation ratio (Ecur) was found to be 0.39, which is lower than E0.1 estimated for the species using Beverton and Holt yield per recruit analysis. Thompson and Bell prediction model showed that the current exploitation is reducing the virgin stock biomass (B0) and spawning stock biomass (SSB) to 55% and 34%, respectively and hence, the exploitation level for the species could be increased by 20% which would increase the yield while maintaining the SSB at a relatively safer 28% level for its sustainability.Keywords
Milk Shark, Growth Parameters, Spawning Stock Biomass, Resilient Species.Full Text
- Diet Composition of Oil Sardine, Sardinella longiceps (Valenciennes, 1847) from Mumbai Waters of Maharashtra, India
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PDF Views:9
Authors
Affiliations
1 ICAR-Research Complex for Eastern Region, Patna-800 014, Bihar, IN
2 ICAR- Central Institute of Fisheries Education, Versova, Andheri (W), Mumbai - 400 061, IN
3 ICAR- Central Institute of Fisheries Education, Versova, Andheri (W), Mumbai-400 061, IN
1 ICAR-Research Complex for Eastern Region, Patna-800 014, Bihar, IN
2 ICAR- Central Institute of Fisheries Education, Versova, Andheri (W), Mumbai - 400 061, IN
3 ICAR- Central Institute of Fisheries Education, Versova, Andheri (W), Mumbai-400 061, IN
Source
Indian Journal of Geo-Marine Sciences, Vol 47, No 9 (2018), Pagination: 1880-1887Abstract
Present study is based on the examination of gut contents of 422 fishes, collected from Mumbai coast, Maharashtra. Based on index of preponderance values, diatoms (60.97%) and zooplankton (25.79%) were found to be the major components of the food. Month wise gut content showed that among the diatoms Cosinodiscus spp. (17.43%), was most dominant followed by Fragilaria oceanica (14.34%) and Pleurosigma spp.(10.86%), in the zooplankton copepods were the most occurred throughout the year, contributing maximum in the May (15.94%) and least in January (4.79%). Gastro somatic index in males and females ranged from 0.80 to 1.41 and 0.72 to 1.60 respectively with there is no significance difference between males and females (P >0.05). Month wise feeding intensity was observed to be highest, for both sexes during May and length wise in smaller size groups (120-129 mm).Keywords
Sardinella longiceps, Feeding Intensity, Index of Preponderance, Condition Factor, Mumbai.Full Text
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- Diversity and Composition of Phytoplankton Around Jaitapur Coast, Maharashtra, India
Abstract Views :16 |
PDF Views:9
Authors
Mayura Khot
1,
P. Sivaperumal
1,
Neeta Jadhav
1,
S. K. Chakraborty
1,
Anil Pawase
2,
A. K. Jaiswar
1
Affiliations
1 ICAR-Central Institute of Fisheries Education, Panch Marg, Off Yari Road, Versova, Andheri (W), Mumbai - 400061, IN
2 Colleges of Fisheries, Shirgaon, Ratnagiri - 415602, IN
1 ICAR-Central Institute of Fisheries Education, Panch Marg, Off Yari Road, Versova, Andheri (W), Mumbai - 400061, IN
2 Colleges of Fisheries, Shirgaon, Ratnagiri - 415602, IN
Source
Indian Journal of Geo-Marine Sciences, Vol 47, No 12 (2018), Pagination: 2429-2441Abstract
The average phytoplankton density was observed to be highest during post-monsoon at inshore as well as offshore stations. Overall phytoplankton was comprised of Bacillariophyceae (81.4%), Dinophyceae (12%), Chrysophyceae (3%), Cyanophyceae (1.8%), Desmophyceae (2.9%) and Chlorophyceae (3.9%). A total of 86 species of phytoplankton belonging to 56 genera and 6 classes were recorded from offshore and inshore stations. A massive bloom of cyanobacteria Trichodesmium erythraeum was also sighted during the winter season. Dinoflagellates showed a peak during monsoon at inshore stations. Maximum values of diversity indices were recorded during winter at offshore and during pre-monsoon at inshore stations.Keywords
Jaitapur, Proposed Nuclear Power Plant, Phytoplankton, Bloom, Trichodesmium erythraeum.Full Text
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- Food and Feeding Habits of Oil Sardine Sardinella longiceps from Ratnagiri Coast off Maharashtra India
Abstract Views :27 |
PDF Views:22
Authors
Affiliations
1 Sher-e-Kashmir University of Agricultural Sciences and Technology of Kashmir, Kashmir (J&K), IN
2 Central Institute of Fisheries Education, Versova, Andheri (West), Mumbai, Maharashtra, IN
3 Division of Livestock and Fisheries Management, ICAR-Research Complex for Eastern Region, Patna, Bihar, IN
4 College of Fisheries, DBSK Krishi Vidyapeeth, Ratnagiri, Maharashtra, IN
1 Sher-e-Kashmir University of Agricultural Sciences and Technology of Kashmir, Kashmir (J&K), IN
2 Central Institute of Fisheries Education, Versova, Andheri (West), Mumbai, Maharashtra, IN
3 Division of Livestock and Fisheries Management, ICAR-Research Complex for Eastern Region, Patna, Bihar, IN
4 College of Fisheries, DBSK Krishi Vidyapeeth, Ratnagiri, Maharashtra, IN
Source
Indian Journal of Geo-Marine Sciences, Vol 48, No 3 (2019), Pagination: 309-318Abstract
The food of oil sardine, Sardinella longiceps caught off Ratnagiri, Maharashtra, was studied using 917 specimens obtained randomly from commercial catches. The fish was found to be predominantly a plankton feeder, consuming diatoms, dinoflagellates, zooplankton, blue-green algae, and unrecognizable matter. Diatoms formed the most important group followed by zooplankton and dinoflagellates. Unrecognizable matter comprising mud, fish scales and detritus were observed in the stomach contents throughout the year.Keywords
Diatoms, Oil Sardine, Sardinella longiceps, Ratnagiri, Index of Relative Importance.Full Text
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- Population Dynamics and Stock Assessment of Spadenose Shark Scoliodon laticaudus Muller and Henle 1839 along Gujarat Coast of India
Abstract Views :23 |
PDF Views:27
Authors
Swatipriyanka Sen
1,
S. K. Chakraborty
2,
E. Vivekanandan
3,
P. U. Zacharia
4,
Shoba J. Kizhakudan
5,
A. K. Jaiswar
2,
Gyanaranjan Dash
1,
G. Jayshree
6,
Sangita A. Bharadiya
6
Affiliations
1 Digha Research Centre of CMFRI, Digha, West Bengal, IN
2 Central Institute of Fisheries Education, Mumbai, Maharashtra, IN
3 National Consultant, Bay of Bengal Programme Inter-Governmental Organization (BOBP-IGO), Chennai, Tamilnadu, IN
4 Central Marine Fisheries Research Institute, Kochi, Kerala, IN
5 Madras Research Centre of CMFRI, Chennai, Tamilnadu, IN
6 Veraval Regional Centre of CMFRI, Veraval, Gujarat, IN
1 Digha Research Centre of CMFRI, Digha, West Bengal, IN
2 Central Institute of Fisheries Education, Mumbai, Maharashtra, IN
3 National Consultant, Bay of Bengal Programme Inter-Governmental Organization (BOBP-IGO), Chennai, Tamilnadu, IN
4 Central Marine Fisheries Research Institute, Kochi, Kerala, IN
5 Madras Research Centre of CMFRI, Chennai, Tamilnadu, IN
6 Veraval Regional Centre of CMFRI, Veraval, Gujarat, IN
Source
Indian Journal of Geo-Marine Sciences, Vol 48, No 4 (2019), Pagination: 423-433Abstract
Stock assessment of Scoliodon laticaudus Muller and Henle, 1839 was made along with analysis of its few biological characteristics from its commercial landings during 2012-2016 from Gujarat waters of India to understand the population dynamics and stock status of the species. The average annual landing of the species was 5442 t, which constituted about 67% of the total shark landings at Gujarat coast. L„, K and t0 were estimated as 75.53 cm and 0.54/yr, and -0.4 yr, respectively. Total mortality rate, fishing mortality rate and natural mortality rate were estimated as 1.95 yr-1, 1.04 yr-1 and 0.91 yr-1, respectively. The length at capture (Lc50) and length at maturity (Lm50) were 39.74 cm and 35.79 cm, respectively, which indicate that most of the sharks are exploited after attaining the sexual maturity. Length-weight relationship showed that the growth was isometric. The species was a continuous breeder and showed peak recruitment during September. The current exploitation ratio (Ecur) was found to be 0.53, which is lower than E0.1 estimated for the species using Beverton and Holt yield per recruit analysis. Thompson and Bell prediction model showed that maximum sustainable yield for S. laticaudus could be obtained by increasing fishing effort by almost 2.4 times higher than the present level which would deplete the spawning stock biomass (SSB) to 20%. Maximum economic yield could be obtained by increasing the fishing effort by 1.8 times which would also decrease the SSB, but to a comparatively safer 26.5% level. Considering 30% SSB as a precautionary management reference point, the effort could be increased by 50% exclusively for the sharks to increase the yield and revenue from fishery while maintain SSB at a safer 30% level.Keywords
Spadenose Shark, Population Parameters, Fishery Management, Precautionary Approach.Full Text
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