Studies were undertaken to record distillery effluent induced quantitative alterations in the nucleic acids (DNA & RNA) and protein during three principal phases of ovarian cycle (prespawning, spawning and post spawning) of Colisa fasciatus , a tropical freshwater fish. Observation were recorded under three different concentrations of the distillery effluent after 30 days of exposure. Observati...

The genus Phytomonas includes parasites that are etiological agents of important plant diseases, especially in Central and South America. These parasites are transmitted to plants via the bite of an infected phytophagous hemipteran. Despite the economic impact of these parasites, many basic questions regarding the genus Phytomonas remain unanswered, such as the mechanism by which the parasites ...

Seven hermit crab species of the pagurid genus Pagurixus Melin, 1939 are reported on the basis of material recently collected from the northern and central islands of the Ryukyu Islands, southwestern Japan. Four species are new to the hermit crab fauna of the Ryukyu Islands: P. acanthocarpus Komai & Okuno, 2009; P. fasciatus Komai & Myorin, 2005; P. formosus Komai, 2010; and P. tweediei (Forest...

In beginning of 21 century, various industries have been set up for boosting the production of various substances of commercial importance. A distillery factory has been established in industrial development area of Gorakhpur (GIDA). It releases its effluent in the adjoining field/aquatic bodies that directly or indirectly pose a threat to aquatic biota in general and fishes in particular. Pres...

The cypermethrin (synthetic pyrethroids) has shows strong piscicidal activity in freshwater teleost fish Colisa fasciatus for all the exposure periods (24h or 96h) in time as well as dose dependent manner. The LC values decreases from 0.009 (24h) to 0.006 (96h) in winter season (water temp. 16°C) and 0.06 (24h) to 50 0.02 (96h) in summer season (water temp. 28°C). Sub-lethal doses (40 and 60% o...

The groupers (Epinephelidae family) are demersal species that a vulnerable resource due to increasing fishing pressure around Reunion Island. Five of among the main exploited by commercial and recreational fisheries La Réunion Island: blacktip grouper ( Epinephelus fasciatus; Forsskål 1775), oblique-banded radiatus ; Day 1868), golden hind Cephalopholis aurantia , Valenciennes 1828), white-edge...

North American bean thrips, Caliothrips fasciatus, native to California U.S., has been detected inside the navels of navel oranges exported from for more than 120 years. Despite this long history accidental movement into new areas, thrips failed establish populations outside its range. The cold accumulation hypothesis postulates that increasing levels stress experienced by overwintering is comp...

A cytogenetic characterization, including heterochromatin content, and the analysis of the location of rDNA genes, was performed in Largus fasciatus Blanchard, 1843 and L. rufipennis Laporte, 1832. Mitotic and meiotic analyses revealed the same diploid chromosome number 2n = 12 + X0/XX (male/female). Heterochromatin content, very scarce in both species, revealed C-blocks at both ends of autosom...

The fish genus Astyanax is widespread throughout the Neotropical region and is one of the most species-rich genera of the Characiformes. Cytogenetic studies of Astyanax have revealed marked intra- and interspecific diversity, with the identification of various species complexes. In this report, we describe the karyotypic structure of two sympatric species of Astyanax (Astyanax sp. and Astyanax ...