Between August 2000 and August 2001, 12,216 fish of 73 species were purchased from several local markets in Nakhon Nayok Province, Thailand, and examined for the presence of Gnathostoma larvae. Almost all species were fresh-water fish that had grown naturally, rather than raised commercially. Eight species were found to be infected with gnathostome larvae. The overall prevalence was 5.1% (626/1...

BACKGROUND Morphological variations have arisen due to diverse environmental conditions. Application of cytoarchitectonic criteria permits the delineation of distinct nuclear complexes from the brain region. PURPOSE Very less information is available on the cytoarchitectonic pattern of the brain, of the giant snake headed murrel, Channa marulius. The murrel is much neglected in neuroanatomica...

Marine gastropods of the family Naticidae are worldwide distributed and known for their unusual predatory habits. Due to wide distribution, naticids studied like predators intertidal bivalves. The present study demonstrates predation naticid gastropod Natica marochiensis on bivalve Donax striatus in northeastern region Brazil.

Fish species may act as suitable hosts for trypanosomes. Clarias batrachus, Channa punctatus and Wallago attu were found infected with Trpanosoma batrachi , T. aligaricus, and T. attii, The vulnerable fishes were divided into six groups: Group I Clarias batrachus (IA control, IB infected), Group II Channa punctatus (IIA control, IIB infected) and Group III Wallago attu (IIIA control, IIIB infec...

Ammonia is the chief excretory product in fishes. However, non-availability of enough of water in the habitat, may lead to the formation of urea, in fishes. In the present study, the possible role of urea formation to avoid the toxicity of ammonia under water-restricted condition was tested in Channa gachua. Circulatory urea and ammonia were estimated in the blood of the fishes and glutamate de...

Channa punctatus is the most common fish found in Indian rivers and water bodies. The present study was conducted to investigate the dilution effect of tannery waste water on the activity of serum LDH enzyme of the Indian freshwater fish Channa punctatus. The effect was observed based on the result of chronic toxicity and comparison of control with experimental groups. Tannery wastewater causes...

One new and three previously described species of Trianchoratus Price et Berry, 1966 were collected from the gills of Channa lucius (Cuvier) and Channa striata (Bloch) from the Bukit Merah Reservoir, Perak and Endau-Rompin, Pahang, Peninsular Malaysia. They are Trianchoratus longianchoratus sp.n., T. malayensis Lim, 1986 and T. pahangensis Lim, 1986 from C. lucius, and T. ophicephali Lim, 1986 ...

Ctenochaetus striatus is one of the most abundant surgeonfishes on Indo-Pacific coral reefs, yet the functional role and feeding ecology of this species remain unclear. This species is reported to possess a rigid structure in its palate that is used for scraping, but some authors have reported that this element is comprised of soft tissue. To resolve the nature and role of this structure in the...