A new polychaete of the family Pilargidae from Palk Bay, South India

The family Pilargidae consists of the following seven genera : Ancistrosyllis Mc Intosh, Cabira Webster, Loandalia Monro, Otopsis Ditlevsen, Pilargis St. Joseph, Talehsapia Fauvel and Ancistargis Jones. However, Hartman (1947) has suggested that the genus Cabira, which is represented by only one species, might best be dropped from literature. Kitamori (I960) has described Pilargis matsunagaensis (= Ancistargis matsunagaensis), a new species from Matsunaga Bay, Hiroshima Prefecture, which combines the characters of both the genera Ancistrosyllis and Pilargis. It has a pair of antennae in the prostomium and the epitheUal papillae are scattered over most of the body. In addition, it has an acicular hook in notopodia, a character typical of the genus Ancistrosyllis. As pointed out by Jones (1961) P. matsunagaensis should belong to the genus Ancistargis. At present this genus is represented by two species, papillosus and matsunagaen

Maturity and spawning of the snapper, Lutianus kasmira (Forskal) from the Andaman sea

Lutianus kasmira of the Andaman Sea spawns only once in a year but the spawning period is likely to be spread over a period of four or five months from November to March. The occurrence of mature fish over a prolonged period and high gonadosomatic index during a number of months lend additional evidence for the prolonged spawning season of the fish. The minimum size at first maturity was about 170 mm and fifty per cent maturity was attained when the fish grew to a length of 200 mm. Fecundity was found to fluctuate very widely from 42,100 to 332,620. The sexes were found to be disproportionate in the catches, the males outnumbering the females, which suggests that differential fishing could occur in Lutianus kasmira

On the occurrence of Malacanthus hoedtii Bleeker (Fam: Malacanthidae) in the Andaman sea.

The occurrence of Malacanthus hoedtii Bleeker is reported for the first time from the Andaman Sea. The various body measurements of M. hoedtii are compared with those of M. latovittatus and the range of distribution of the two species in the tropical Indo-Pacific Ocean is discussed

A new approach for finding out the bioaccumulation rate of heavy metals in tissues of Liza parsia

Through field and laboratory studies, a concept has been developed for finding out the differential rate of bioaccumulation of some heavy metals such as copper, zinc and lead in different tissues of mullet" Liza parsia (Hamilton-Buchanan). This new approach for finding out the maximum bioaccumulatiol1 employed a series of experiments, statistical and graphical interpretations and has put forth a concept for future investigations with different bio-accumulative toxicants

Summary of the proceedings of the National workshop on Beche-de-mer

PROCEEDINGS OF THE NATIONAL WORKSHOP ON BECHE-DE-MER PRESIDENTIAL ADDRESS BY DR. P. S. B. R. JAMES INAUGURAL ADDRESS BY SHRI. M. R. NAIR KEYNOTE ADDRESS BY SHRI K SACHITHANANTHAN NATIONAL WORKSHOP ON BECHE-DE-MER MANDAPAM CAMP • 2 3 - 2 6 February 1989 RECOMMENDATION

Static bioassay with Liza parsia exposed to Copper Sulphate, Zinc Sulphate and Lead Nitrate

Short-term static bioassays were conducted on the brackishwater mullet, Liza parsia to determine the combined effect of copper sulphate, zinc sulphate and lead nitrate in the ratio 1:1:1. From probit analyses the LCso values for 12, 24, 72 and 96 hours were found to be 160.5, 152.2, 135.6, 117.1 and 106.7 ppm, respectively. The toxicities of these elements were found to be "additive" in nature

Present status of exploitation of mussel resources in India

The two species of mussel, Perna viridis and P. indica, contribute to a sustenance f ishery in India, particularly along the south-west coast. The paper deals with the characteristics of this fishery in the zones Ratnagiri to Gangali, Cannanore to Calicut and Kovalam to Muttom md also at other dispersed centre

Mariculture Research under the Postgraduate Programme in Mariculture - Part 6

Mariculture Research under the Postgraduate Programme in Maricultur

Food and feeding habits of the snapper, Lutianus kasmira (Forskal) from the Andaman sea

The paper deals with the food and feeding habits of the snapper, Lutianus kasmira (Forskal), a common lutianid fish around Andaman Islands. Teleost fishes, juvenile crabs and megalopa, and young prawns constituted the chief items of the diet of the fish in that order. Isopods, amphipods, ostracods, polychaetes, stomatopods, asteroids, ophiuroids, gastropods, holothurians, hermit crabs, pteropods, lucifers, caprellids and cypris contributed an insignificant percentage to the diet. The major items of the diet of the fish did not differ significantly from year to year. No marked change in the diet of the fish as it grew from yoting to adult was noticed. Generally active feeding was noticed during April to October with a peak during April to August and a poor feeding dtiring the rest of the period. The available data suggest a slackness in feeding dui'ing the spawning season and an active feeding after spawning. Small-sized food organisms were swallowed whole, while large-sized organisms were bitten and swallowed. L. kasmira is essentially a column feeder occasionally resortng to feeding at the boottom