Distribution of bivalve resources in Kandleru Estuary, Krishnapatnam Basin, Nellore District, Andhra Pradesh

Kandleru River flowing north of Gudur town confluences with the Bay of Bengal near Krishnapatnam at latitude 14° 15´ N and longitude 80° 18´ E. Krishnapatnam is the southernmost minor port on the 1000 km long coastal line of Andhra Pradesh and it is just 140 km north of the city of Madras by road and about 50 nautical miles by sea

Blue ring Octopus, Hapalochlaena nierstraszi, from the Bay of Bengal along the Chennai Coast

On 12-08-2012, a rare occurrence of Blue ring octopus {Hapalochlaena nierstraszi (Adam 1938)), with a length of 82-165 mm and weight of 5.5-18 g was recorded for the first time at Kasimedu Fisheries Harbour , Chennai. It was caught by Trawl net gear at a depth of 20-30 m in Bay of Bengal along the Chennai Coast. There are about at least ten species of tiny blue-ringed octopus, which, ironically for their size, are the most deadly of ail cephalopods,but only four have been formally named. All these are inhabitants of Asian-pacific waters. These are; Greater Blue-ringed Octopus {Hapalochlaena lunulata), Lesser Blue-ringed Octopus or Southern Blue-ringed Octopus {Hapalochlaena maculosa), Blue-lined Octopus {Hapalochlaena fasciata) and Hapalochlneno nierstraszi. The common names come from the bright blue rings that appear when they are alarmed or attacked

Utilization of gill rakers of lesser devil ray Mobula diabolus - a new fish byproduct

The skin of the rays Dasyatis uarnak and D.jenkinsii are used as an excellent source ofleather. It is expensive due to its high durability.In addition to the skin of the rays, the gill rakers of the lesser devil ray Mobula diabolus is exported in recent years. Hitherto discarded, gill rakers of rays have now gained importance

Occurrence of starry blowfish, Arothron stellatus from Kasimedu Fish Landing Centre, Chennai, Tamil Nadu

The blowfish, locally called as “Pethai” are generally believed to be poisonous. Certain internal organs and sometimes their skin are highly toxic to most animals when eaten, nevertheless the meat of some species is considered a delicacy in Japan (as fugu) and Korea (as bok), when prepared by chefs who know what is safe to eat and in what quantity. Puffer fish is eaten safely worldwide simply by killing and gutting the fish while it is fres

First record of the chimaeroid, Rhinochimaera atlantica at Kasimedu Fisheries Harbour, Chennai

Bumper landings of skipjack tuna, Katsuwonus pelamis was observed at Visakhapatnam Fishing Harbour on 28th October 2011, wherein about 42 t were landed by hooks and line

Unusual landings of Blood clam Anadara granosa at Kasimedu Fishing Harbour

The species is widely distributed in the Indo-Pacific region.Though the true cockles of the genus Cardium are not abundant in Indian waters, the cockle-like ark clam A. granosa forms extensive beds in some areas. The blood clams constitute an important fishery in Kakinada Bay and contributes about 50% of the total molluscan landings there. It is one of the commercially important molluscan resources of India. Though its meat is consumed locally to a limited extent, its demand in the ornamental shell trade is growing. The clam shells are also used in producing lime by burning the whole shells

Marine fisheries of the north-east coast of India during 2008

The north-east region of India comprises of the states of West Bengal and Orissa. There are about 100 landing centres distributed in these two coastal states, of which most of them record seasonal fishing. The estimated marine fish landings in this region was 4.83 lakh t in 2008, which formed about 15% of the total ‘all India landings’

Heavy landing of tranquebar scallop at Cuddalore, Tamil Nadu

Scallops belong to family Pectinidae and their shells exhibit an extraordinary diversity of shape and sculpture having high demand in ornamental shell trade industry. They are distinct and unique from other bivalves in that they actively swim by ejecting rapid jet propulsion of water

Unusual landings of cusk eel Monomitopus nigripinnis at Chennai

At Kasimedu Fishing Harbour, Chennai, about 40-50 multiday thangal trawlers operate regularly. Out of this, 3-6 trawlers operated daily for deepsea prawns during the period Feb - April, 2008. Deepsea fishes were landed along with deepsea prawns. An unusually high catch of the cusk eel Monomitopus nigripinnis (Family: Ophidiidae) was recorded during the said period. The deepsea fishing operations were carried out in the south-east direction within a distance of 40-60 km at a depth of 150-200 fathoms. The same species came in 2009 also in low quantities

Adaptive traffic aware clustering and routing model for wireless sensor networks

Designing effective clustering algorithms plays a very important role in improving network lifetime target coverage (NLTC) in heterogeneous wireless sensor networks (HWSNs). However, the current clustering mechanism failed to address hotspot problem resulting in poor coverage and network lifetime performance. Recently, unequal clustering has been used for addressing hotspot problem in HWSNs. However, when performing inter-cluster routing, load balancing is not efficient and the energy degradation is high, which affects the overall network performance. This work introduces an effective model namely adaptive traffic aware clustering and routing (ATACR) model to address hotspot and load balancing issues. The ATACR introduces a novel unequal clustering and ideal distribution of load in different cluster levels. The ATACR model improves network lifetime, reduces control channel overhead, and attains better throughput in comparison with existing routing models