Indian Council of Agricultural Research
CENTRAL MARINE FISHERIES RESEARCH INSTITUTE
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Attrition in fisherwomen activity groups-A case study on Theeramythri, Kerala

Attrition in fisherwomen activity groups-A case study on Theeramythri, Kerala - CMFRI Repository

Women engage in a wide range of activities in the fisheries and in fishing communities which is vital to a community’s well-being. They play a very crucial role in though their contribution is invisible and unacknowledged. In Kerala almost 50 percent of the posts harvesting activities of the marine fisheries are undertaken by them. The 26th December 2004 Tsunami significantly affected the coastal villages of Kerala. A vast majority of the coast dwelling people were affected by the huge and wide spread destruction of the tragedy. In order to provide relief and rehabilitation to the affected, Department of Fisheries ,Kerala implemented multiple programs, which were christened under a common livelihood program named “Theeramythri” under the Society for Assistance to Fisherwomen (SAF).The SAF visions to initiate, encourage and strengthen locally organized activity groups among fisherwomen, thereby providing assistance for expertising their business development skill, resource utilization and management, performance improvement, networking and marketing. The Theeramythri programme facilitates and handholds fisherwomen to engage in gainful self-employment for their economic and social emancipation. Among the total 2500 microenterprise groups formed initially as part of various Tsunami rehabilitation programs, only 1000 are operationalat present. Around 500 groups reduced their operations and became dormant due to various reasons. The present study gauges to provide a comprehensive picture about the reasons for the non-performance of SAF groups in Kerala with special focus on its technical, economic, institutional and social impacts. The study identifies the attributes determining the non-performance and the role of different stake holders in the non-functioning of the micro enterprise units. The study also aims at developing valid measures for revamping/strengthening/reconstituting the group and also facilitating innovative ideas for overcoming the vulnerability of an activity group. Statistical and economic tools such as percentage analysis, Garrette ranking technique, weighted average analysis and cluster analysis have been employed to analyze the data.

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Range extension of a bathypelagic squid, Bathyteuthis bacidifera, to the south Arabian Sea with special reference to its age and growth pattern

Range extension of a bathypelagic squid, Bathyteuthis bacidifera (Cephalopoda: Bathyteuthidae), to the south Arabian Sea with special reference to its age and growth pattern - CMFRI Repository

The bathypelagic squid Bathyteuthis bacidifera was collected in an open net towed at 200 m over a bottom depth range from 1200 to 2340 m in the southern Arabian Sea, near Laccadive Archipelago (09°54′32″N; 73°39′12″E, 11°16′18″N; 72°51′09″E, and 10°48′08″N; 72°41′11″ E). Morphometric and molecular analyses are presented here. This is the first record of Bathyteuthis bacidifera from the southeastern Arabian Sea and the first description of the species at the molecular level. Specimens were collected from April 2015 to January 2016 in warmer (15.2 to 15.6 °C) and shallower (∼200 m) water than previously reported. The first observations of countable increments in the statolith of the genus Bathyteuthis are reported. The statolith microstructure of the specimens (15.6 to 39.0 mm dorsal mantle length) revealed that Bathyteuthis bacidifera is a slow growing squid, with a growth rate of 0.12 to 0.20 mm/day. The record of this rare squid from the Arabian Sea is an addition to the cephalopod fauna of India and contributes to biogeographic knowledge of this unusual deep sea family.

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Genetic population structure of Indian oil sardine, Sardinella longiceps assessed using microsatellite markers

Genetic population structure of Indian oil sardine, Sardinella longiceps assessed using microsatellite markers - CMFRI Repository

Indian oil sardines, commercially and ecologically important pelagic fishes in Indian waters have not been the focus of major genetic studies as compared to their counter parts in Atlantic and Pacific oceans in spite of several reports suggesting stock complexity and intraspecific diversity. Hence, we investigated the genetic stock structure of Indian oil sardine, Sardinella longiceps using microsatellite markers by collecting a total of 768 individuals from eight locations along the Indian coast and one from Gulf of Oman over a 2 year period (2013–2015). Six polymorphic microsatellite markers revealed significant genetic differentiation between populations with the highest FST value (0.055) between Oman and Indian coastline. Within the Indian coastline another major subdivision between Mumbai & Mangalore vs. other regions was detected (FST value 0.047) which was also confirmed in Barrier analysis with the presence of two strong barriers between these eco-regions. There exist pronounced differences in oceanographic and environmental features between Gulf of Oman, Western Indian Ocean and Eastern Indian Ocean (Bay of Bengal) which may act as barriers for effective dispersal and gene flow resulting in genetic differentiation. Even though, the samples collected from Calicut, Kollam, Trivandrum, Chennai and Vizag showed the presence of admixed genotypes, the possible presence of distinct populations in some regions was evident in Bayesian analysis which needs to be confirmed further using more widespread sampling design and powerful markers. The present study provided insights into the biocomplexity and intra-specific diversity of Indian oil sardine populations, which needs to be preserved for maintaining resilience of these important fishes to climate change and habitat alterations in the Indian Ocean.

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Indexing of geospatial data by using GIS techniques for sustainable use and management of coastal natural resources in India

Indexing of geospatial data by using GIS techniques for sustainable use and management of coastal natural resources in India - CMFRI Repository

Increasing anthropogenic activities in sensitive coastal environments has drawn a global attention in present era and protecting coastal zones from over exploitation has become a subject to remarkable stress in coastal management of India. Several studies has already described that Remote Sensing (RS) and Geographic Information System (GIS) are combined and advanced decision support system for storing, structuring and analyzing any information in a scientific way. The present paper provides an overview of GIS application for conserving natural resources and making a smart coastal area in India. It is also described that how a decision support system can be developed for monitoring & outlaying any coastal area to plan out the various activities along the coastal zones. The GIS technology was used here to provide the information for micro and macro level spatial planning of natural resources of coastal areas in India on a sustainable basis. For mapping, monitoring and indexing the study area ArcMap and ArcScene, two basic and powerful platforms of ArcGIS software were used. With the help of tools in ArcTool box like 3D analyst, Spatial analyst, Multidimension tools etc. and respective methods like Raster interpolation, Raster surface, Extraction were applied for geographical referencing, projecting the area and generating contour lines.

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Genetic population structure and historic demography of Indian mackerel, Rastrelliger kanagurta from Indian peninsular waters

Genetic population structure and historic demography of Indian mackerel, Rastrelliger kanagurta from Indian peninsular waters - CMFRI Repository

An attempt was conducted to understand the genetic population structure and historic demography of Indian mackerel, Rastrelliger kanagurta from Indian peninsular waters using mitochondrial DNA markers. A total of 241 sequences of mitochondrial control region and 271 sequences of mitochondrial ATPase gene region were amplified and analyzed in Indian mackerels collected from 10 different locations along Indian coast resulting in 123 and 155 haplotypes respectively. In addition, control region sequences representing samples from Thailand downloaded from NCBI were also used for analysis. Significant genetic differentiation (�ST value of 0.38; P < 0.001) was recorded between samples from mainland India, Portblair and Thailand when both control region and ATPase gene sequences were analyzed. Whilst, �ST values were not significant when analyses were carried out between samples collected from mainland India. Oceanographic and environmental barriers between mainland India, Portblair and Thailand contribute to limited larval dispersal and restricted mixing between populations resulting in subtle genetic differentiation. The lack of genetic subdivision between populations from mainland India indicates adequate gene flow and mixing within Indian waters. Bayesian skyline plots revealed a history of population expansion taken place approximately 10000 years ago coinciding with the time after the last glacial maximum or early Holocene. Intensification of monsoon events after the last glacial maximum or early Holocene along the Indian subcontinent contributed to increased productivity in the Tropical Indian Ocean and consequent demographic expansion of mackerel populations historically. Management measures for Indian mackerel populations could be devised regionally so as to conserve intra-specific diversity and biocomplexity of this important resource.

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Validation of Epinephelus coioides (Hamilton, 1822) occurrence along north-east coast of India

Validation of Epinephelus coioides (Hamilton, 1822) occurrence along north-east coast of India - CMFRI Repository

Present study is to identify and validation of the species using different methods like morphological and meristic characters including pyloric caeca count and pattern and by DNA bar-coding. Morphological and meristic characters of the species landed in Visakhapatnam and Paradeep are in close proximity to the earlier reports for E. coioides, and is distinctly different from E. tauvina. Molecular studies using DNA bar-coding also revealed high similarity with E. coioides and low similarity with E. tauvina. It is therefore concluded that the particular grouper species landed along north-east coast is E. coioides and not E. tauvina.

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