Management of scombroid resources of India

Scombroids consisting of mackerels, seerfishes and tunas are an economically important pelagic fishes whose average landings during the 90s was 2.81 lakh t forming 11.7 % of the total marine fish production in India. Their demand in the domestic and export markets is on the rise and the group assumes topical importance in a situation where most of the coastal fishery resources are exploited to the near optimum level. Resource potential, status of exploitation and management and conservation issues regarding the scombroid resource in the coastal fishery sector are presented and discussed

Prospects of development of marine fisheries resources in Lakshadweep

A good data base has already been developed by CMFRI on various marine resources of Lakshadweep islands and related conservation problems. In the present paper, the potentialities and the areas where future research and developmental activities need to be directed are briefly discussed

Scleractinian corals from the Gulf of Kutch

The Scleratinian corals of the Gulf of Kutch from the north-west coast of India is taxonomically analysed. The coral fauna include 37 species among 24 genera. Out of these, 20 genera with 33 species are hermatypec and the rest 4 genera and 4 species is ahermatypes. Early mention in literature on the occurrence of genera such as Pavona, Podabacia, Leptoria and Lobophyllia from the Gulf of Kutcb is not taken into account, since these records are based on unconfirmed determinations. All genera and species considered are widespread in the Indo-Pacific coral provinces and no new species is described herein

Environmental deterioration in Lakshadweep and need for conservation of living resources

The Lakshadweep Archipelago is located on the Laccadive - Chagos ridge, believed to be the submarine extension of the Aravalli mountains. The various atolls rise from a depth ranging from 1500 to 4000 m. The Lakshadweep Archipelago consists of 12 atolls, 3 reefs and 5 submerged banks, all of coral formations. The total land area is about 32 sq km. The height of islands vary from 1 to 1.4 m from MSL

Magnetic Field Uniformity Across the GF 9-2 YSO, L1082C Dense Core, and GF 9 Filamentary Dark Cloud

The orientation of the magnetic field (B-field) in the filamentary dark cloud GF 9 was traced from the periphery of the cloud into the L1082C dense core that contains the low-mass, low-luminosity Class 0 young stellar object (YSO) GF 9-2 (IRAS 20503+6006). This was done using SOFIA HAWC+ dust thermal emission polarimetry (TEP) at 216 um in combination with Mimir near-infrared background starlight polarimetry (BSP) conducted at H-band (1.6 um) and K-band (2.2 um). These observations were augmented with published I-band (0.77 um) BSP and Planck 850 um TEP to probe B-field orientations with offset from the YSO in a range spanning 6000 AU to 3 pc. No strong B-field orientation change with offset was found, indicating remarkable uniformity of the B-field from the cloud edge to the YSO environs. This finding disagrees with weak-field models of cloud core and YSO formation. The continuity of inferred B-field orientations for both TEP and BSP probes is strong evidence that both are sampling a common B-field that uniformly threads the cloud, core, and YSO region. Bayesian analysis of Gaia DR2 stars matched to the Mimir BSP stars finds a distance to GF 9 of 270 +/- 10 pc. No strong wavelength dependence of B-field orientation angle was found, contrary to previous claims.Comment: 18 pages, 6 figures ApJ, accepte

विषिंजम में टूयूना मत्स्यन के लिए जीवंत चारा मछली की उपलब्धता

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Catch trend of commercial trawl fisheries at Krishnapatnam Port. Nellore district, Andhra Pradesh

Of the five fisheries harbours in the Andhra Pradesh, Visakhapatnam Fisheries Harbour has been classified as major and the harbours at Kakinada (East Godavari district), Bhavanapadu {Srlkakulam district), Nizampatnam (Guntur district) and Krishnapatnam Port (Nellore district) as minor harbours

Packages of Practices for Sustainable, Ecofriendly Mariculture (Land-based Saline Aquaculture and Seafarming)

The problems of fast growing human population and protein deficit, particularly in the developing countries continue to exert pressure on the fisheries resources available for exploitation in the wild water bodies. The increasingly limited opportunities in the capture fisheries sector have generated considerable interest in aquaculture

Euthynnus sp. Nov or an inter-generic hybrid of Tuna : An enigma

An unique specimen of tuna, showing characteristics intermediate between Euthynnus Lutken and Katsuwonus Kishinouye has been collected off Mangalore in 1980. The present paper embodies a detailed description of its morphological and meristic characters with a discussion on the status of the specimen. Evidences are not conclusive as to whether it is an inter-generic hybrid or a new species. Attention is drawn to the need for a global revision of the genus Euthynnus

Frequency of occurrence of Heterosaccus indicus(Rhizocephala) on the edible crab Neptunus pelagicus in the Gulf of Mannar

Heterosaccus indicus Boschma parasitises the blue swimming crab Neptunus pelagicus. During January 1967, the authors examined 1836 crabs caught by crab titps in the vicinity of the Regional Centre of Central Marine Fisheries Research Institute, Mandapam Camp. While 12.2 per cent of the total population examined was found to be infe^d, 28.1 per cent of the females had parasites. The ratio of female hosts to male was 1:1.3.: It was also observed that S .8 per cent of the infested crabs possessed more than one parasite