Metamorphosis of the Hermit crab Diogenes diogenes(Herbst)(Decapoda, Anomura) in the Laboratory

Berried female was obtained from trawlers operating in the ' Karwar bay, west coast of India. The depths sampled by the otter trawl dunng tIlls tow varied from 10 to 15 fm. The specimen was maintained alive in aquaria with filtered sea water until the larvae were release

Larval Development of the Xanthid Crab, Ozius rugulosus rugulosus Stimpson (Decapoda, Brachyura) under Laboratory Conditions

The present paper deals with the complete life history, comprising 4 zoeal and a megalopa stages as observed in the laboratory, of O. rugulosus rugulosus Stimpson one of the two species recorded from the Indian region

Research Notes : India : Effect of dates of planting on five soybean varieties

Assam is one of the seven states comprising the North Eastern region of India. The plains of the Brahmaputra Valley lie between 24° to 28° N Latitude, 90° to 96° East Longitude and its elevation (above M.S.L.) ranges from 35 m (Dhubri) to 106 m (Dibrugarh). Soybean was introduced in Assam in 1975 through the Soy~ean Research Project sponsored by the Indian Council of Agriculture Research, New Delhi

Optimization of dilution rate for the production of value added product and simultaneous reduction of organic load from pineapple cannery waste

Candida utiilis NRRL Y-900 was grown on pineapple cannery waste as the sole carbon and energy source in a chemostat at dilution rates ranging between 0.05 and 0.65 h–1 to determine the growth kinetics. The cell yield coefficient varied with dilution rate and a maximum value of 0.662 ± 0.002 gx/gcarb was obtained at a dilution rate of 0.4 h–1. At steady state, the concentrations of carbohydrate, reducing sugar, and chemical oxygen demand (COD) appeared to follow Monod kinetics. At maximum specific growth rate ( max) 0.65 h–1, the saturation constants for carbohydrate, reducing sugar and COD were 0.51 ± 0.02 gcarb/1, 0.046 ± 0.003 grs/1, and 1.036 ± 0.001 gCOD/1, respectively. Maximum biomass productivity (Q x max) 2.8 ± 0.03 gx/1 h was obtained at a dilution rate of 0.5 h–1. At this dilution rate, only 71.0 ± 0.41% COD was removed whereas at a dilution rate of 0.1 h–1, 98.2 ± 0.35% reduction in COD was achieved. At a dilution rate of 0.4 h–1, the optimal yeast productivity and reduction in COD were 2.7 ± 0.13 gp/1 h, and 84.2 ± 0.42%, respectively. Biomass - Candida utilis - chemostat - continuous culture - growth kinetics - pineapple cannery waste - steady stat

Record-sized mackerel, Rastrelliger kanagurta caught from Karwar waters on the west coast of India

The largest mackerel ever caught from Karvar waters or for that matter the largest mackerel so far caught from the Indian waters measured 421 mm in total length and weighed 859 g in fresh condition. This female specimen was caught in purse seine from a depth of 70 meters off Karwar (west of the light house) on 19th August 1999. Two days earlier, on 17th August 1999, another comparatively smaller specimen, measuring347mm in total length and weighing 524 g. was landed by another purseiner. Thus the present specimen has broken all the earlier records (Table 1) in total length and weight. The fully grown female specimens had turgid ovaries. The well developed ovaries with fully packed ova indicate that even at such size mackeml spawns in. the nature. Every year at the begining of the "mackerel season" it is customary to observe larger adults in the catche

Shoreseine (Yendi) operations during the monsoons at Karwar, Uttar Kannada District of Karnataka

After the introduction of trawlers in the 1970s and purseseiners in 1980s, the rampan shoreseine, which was a gear of primary importance along the Uttar Kannada coast, was phased out or replaced and has gradually disappeared. Legislation was promulgated on fishing by mechanised boats in coastal areas in the interest of traditional fishers who fish within 10 m depth

Whale shark landings in Uttar Kannada, Karnataka

The whale shark, Rhincodon typus Smith, 1828, has a circumglobal distribution in tropical and warm temperate seas. Since May 2003 it has been included under Appendix II of CITES, making the trade of this species regulated. The status of this species has since then been upgraded from “Data deficient” in 1996 to “Vulnerable” in 2000 by the IUCN. Currently it is protected under Schedule I Part II of the Wildlife Protection Act of India, 1972

Carangid Fishes of Uttara Kannada, Karnataka

Carangid Fishes of Uttara Kannada, Karnatak

Sea cow Dugong dugon (Muller) washed ashore dead at Rameswaram

Sea cow Dugong dugon (Muller), is a highly endangered marine mammal, listed under Schedule-I, Part I of the Wildlife (Protection) Act, 1972. On 6th April 2010 a sea cow washed ashore dead at Rameswaram fish landing center

Slowing and cooling molecules and neutral atoms by time-varying electric field gradients

A method of slowing, accelerating, cooling, and bunching molecules and neutral atoms using time-varying electric field gradients is demonstrated with cesium atoms in a fountain. The effects are measured and found to be in agreement with calculation. Time-varying electric field gradient slowing and cooling is applicable to atoms that have large dipole polarizabilities, including atoms that are not amenable to laser slowing and cooling, to Rydberg atoms, and to molecules, especially polar molecules with large electric dipole moments. The possible applications of this method include slowing and cooling thermal beams of atoms and molecules, launching cold atoms from a trap into a fountain, and measuring atomic dipole polarizabilities.Comment: 13 pages, 10 figures. Scheduled for publication in Nov. 1 Phys. Rev.