Volume 39, Issue 1
January 1954, pages 1-35
pp 1-16 January 1954
pp 17-23 January 1954
Red halophilic bacteria were isolated in pure culture from salted fish and solar salts. A description of one rod-shaped bacterium and a few cocci is given. Proteolytic tendencies were noticed both in the rod and in four of the cocci. While 37° C. and a relative humidity of 75% favoured good growth in laboratory media, at 4° C. there was no growth. Almost all the species of salted fish from Malpe, Calicut, Adirampatnam and Rameswaram, that were examined, developed red discolouration. Among the fishes salted in the laboratory, sharks and skates appeared to be susceptible to the attack earlier than the others and fatty fish like oil sardines developed it very late, if at all. The rod form was “trained” to grow in salt concentration of 3·5% while one coccus form grew in KCl medium in place of NaCl.
Use of sterilized salt for curing and storage at low temperatures are indicated for preservation of salted fish.
pp 24-35 January 1954
Metamorphosing stages of 3 species of Murænids collected from the Chandipore, Burhabulong estuary (Orissa), are dealt with in this paper. The first species is provisionally determined asMuræna (Gymnothorax) tile (Hamilton) and a connected series of the above from a toothed leptocephalus of 62·5 mm. to an early elver of 53 mm. are described. In the absence of elver stages of the other 2 species their specific identification has not been possible, but from the fairly close similarity in characters they appear to be allied to the above species. The typical leptocephalus stages amongst them are described and figured.