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

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

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

Sperm whale Physeter macrocephalus washed ashore at Devbagh, Karnataka

A female sperm whale Physeter macrocephalus was stranded and washed ashore in dead condition, at Devbagh, 10 km away from Karwar on 18.9.2009

Some aspects of nursery rearing of the Asian seabass (Lates calcarifer, Bloch) in indoor cement tanks

Asian seabass (Lates calcarifer) is a highly valued food fish of great culture potential. Nursery rearing of Asian seabass in indoor cement tanks was undertaken. Fish were fed on artificial diets at 4% body weight and four times feeding per day with periodical size grading. Mean weight and length at the end of the 45 days experimental period was 8.55 g and 91.03 mm, respectively. While survival rate was 100%, FCR and PER at the end of the 45 days experimental period was 1.15 and 1.07%, respectively. The results of various growth parameters studied showed that the values obtained were in conformity with earlier reports on nursery rearing of Asian seabass under varied rearing systems and growth conditions

Note on a bumper catch of Threadfin sea catfish in shore seine

For past several years catfish did not form a fishery at Karwar located in the Uttara Kannada District of Karnataka. However, during the routine observations on the fish landings at Aligadda Fish Landing Centre, Karwar, an unusual bumper catch of about 3 tons of cat fish Arius arius was recorded from shore seine (Yendi bale) in the early hours of 28th July 2018. locally known as "Billi Shade", the catch was so heavy that it was difficult to drag the net to the shore and the haul was partially harvested at sea itself. The net operated by around 40 fishers at a depth of less than 8 metres, was 400 m in length