Longbeak common dolphin Delphinus capensis (Gray, 1828) stranded at Karwar, Karnataka

A dead specimen of longbeak common dolpin Delphinus capensis (Gray, 1828), locally called ‘handi meenu’ which was floating approximately 500 m away from sea shore of Aligadda village, Karwar was brought ashore by fishermen and instructors of Karavali sports club in the morning hours of 08.01.2011

Three baleen whales washed ashore along Uttara Kannada coast of Karnataka

Three instances of stranding baleen whales were observed along the coast of Uttara Kannada district of Karnataka during July and August 2016. All strandings were recorded from the southern part of the district.The first whale was washed ashore on 20th July 2016 at Ramangindi, Dhareshwar, 12 km south of Kumta (140 21’ 710"N and 740 24’ 360E). The whale was in a decomposed condition when washed ashore. The post mortem was carried out by a veterinary doctor. It was identified as Bryde’s whale Balaenoptera edeni. The total length of the male whale was 44 feet weighing approximately 10 tonnes (Fig. 1). The second whale washed ashore on 27.7.2016 at Hollangadde 7 km from Kumta (140 27’ 432" N and 740 22’ 615" E was also in decayed condition. It was identified as baleen whale and measured 46 fee

Unusual landings of large sized Yellowfin tuna by purse seiners at Karwar, Karnataka

Unusual landings of large sized Yellowfin tuna Thunnus albacares (Bonnaterre, 1788) was observed at Baithkol Fisheries Harbour, Karwar during the period 16th to 22nd February 2020. Six tunas were landed by two purse-seiners with individual weights ranging from 68 kg to 103 kg. One purse-seine unit landed with only one yellowfin tuna weighing 68 kg in the early morning hours of 16.2.2020. The other multiday purse-seine unit of OAL 19.8 meter overall length (OAL) fitted with a 350 hp Sonatrac engine was operated at a depth of 54 meter off Belekeri (N 140 38’ 100” E 0730 52’ 500”) during night hours on 18.2.2020 and four yellowfin tuna weighing 103, 97, 82 and 78 kg each were hauled in and sent immediately by a carrier boat to landing centr

Stranding of Indian Ocean humpback dolphin along Uttara Kannada coast, Karnataka.

Strandings of two Indian Ocean humpback dolphins along Uttara Kannada coast of Karnataka, during November, 2019 and April 2020 is reported. One dead dolphin was washed ashore at Murdeshwar beach of Bhatkal taluk on 11.4.2020 in decayed condition (Fig 1). Based on the external characters, with the help of the available photograph it was identified as a female Indian Ocean humpback dolphin Sousa plumbea (G. Cuvier, 1829). It had beached about one kilometre away from the northern side of the Murdeshwar Temple,surrounded on three sides by Arabian sea

Spectrum of the three dimensional fuzzy well

We develop the formalism of quantum mechanics on three dimensional fuzzy space and solve the Schr\"odinger equation for a free particle, finite and infinite fuzzy wells. We show that all results reduce to the appropriate commutative limits. A high energy cut-off is found for the free particle spectrum, which also results in the modification of the high energy dispersion relation. An ultra-violet/infra-red duality is manifest in the free particle spectrum. The finite well also has an upper bound on the possible energy eigenvalues. The phase shifts due to scattering around the finite fuzzy potential well have been calculated

Unusual occurrence of large size oilsardine (Sardinella longiceps) at Karwar, Uttar Kannada coast of Karnataka

The oilsardine, Sardinella longiceps (Valenciennes, 1847), is a major pelagic fishery resource of Malabar and Konkan coast. At Karwar, the fishing season for oilsardine is from August-May and the peak season is from October to March. During the current year, after the ban period, the oilsardine fishery by the purseseine boats started from the first of August, 2011

Site and species selection criteria for cage culture

Site selection is the most important factor which determines the commercial viability of mariculture systems. Cage culture can be made possible only when the site for cage culture operation is located, designed and operated to provide optimum water quality and to avoid stress conditions. In addition to water and sediment quality of the site some biological and natural distribution information for the species should also be known before a site is selected for cage culture. The selection of fish for cage culture should be based on biological criteria, such as physiological, behavioural characteristics and level of domestication; marketing criteria and environmental criteria, distribution and habitat of sit

A bumper catch of carangids in purse seines

An unusual bumper catch of carangids wasobserved in the purse seine landings at KarwarFishery Harbour on 23.10.2015. Although carangidsare landed in stray numbers by the purse seine unitsoperated from this harbour, they have never formeda major catch. During the month of October 2015,210 purse seiners (20 m OAL with 350 HP engine)were operated from Karwar Fishery Harbour

Olive Ridley turtle washed ashore

A carcass of an olive ridley turtle, Lepidochelysolivacea (Eschscholtz, 1829) was found washedashore on Cherai beach on 12.01.16. It was in abadly decomposed state, with only the head, frontflippers and part of the carapace intact, making itdifficult to take morphometric measurements

Heavy metal distribution in the biotic and abiotic matrices along Karnataka coast, west coast of India

Sediment and soft tissue of bivalve samples collected from various sites of Karnataka coast were analysed for the estimation of the nanaal and anthropogenic heavy metal fluxes. Seasonal variations of heavy metals in sediment and bivalves collected from selected hot spots from Binage, Karwar and Thannirbavi, Mangalore were monitored. High concentrations of Hg was observed in the environment near' the vicinity of a caustic soda plant at Binage, Karwar, indicating Hg pollution. Total Hg concentration in the tissue of oysters sampled from a contaminated stream from the above site, exceeded the safe limit of 0.5 ilg g.1 wet weight. The base-line heavy metal concentrations in sediment and bivalves from selected sites of coastal Karnataka are presented