Achamveetil Gopalakrishnan

Learn More
Globally, as on today, only about two million species have been identified, while the actual number of species is estimated to be between 10 and 30 million. This enormous treasured biodiversity is an essential provider of ecosystem goods and services to the mankind. Aquatic germplasm resources of India comprise whole lot of organisms, both animals and(More)
Coilia dussumieri (Valenciennes, 1848) commonly called as golden anchovy, constitutes a considerable fishery in the northern part of both the west and east coasts of India. Despite its clear-cut geographic isolation, the species is treated as a unit stock for fishery management purposes. We evaluated 32 microsatellite primer pairs from three closely related(More)
Murrels (Perciformes; Channidei; Channidae) are unique group of freshwater air breathing fishes having a confined distribution to African and Asian continents. The phylogenetic relationship among eight Channid species viz. Channa aurantimaculata, Channa bleheri, Channa diplogramma, Channa gachua, Channa marulius, Channa punctatus, Channa stewartii and(More)
Asian seabass or barramundi (Lates calcarifer) is an important food fish with commercial value and a wide geographic distribution. Though some reports based on molecular and/or morphological data exist, a comprehensive effort to establish species identity across its range is lacking. In order to address this issue and especially to ascertain whether the(More)
The comparative assessment of genetic diversity using allozymes, random amplified polymorphic DNA (RAPD), and microsatellite markers was conducted in endemic and endangered yellow catfish (Horabagrus brachysoma) sampled from three locations in Western Ghats river systems of India. Among the three markers, microsatellites show more polymorphism, having 100%(More)
Genetic diversity of seahorse species was studied using 12 polymorphic microsatellite DNA loci in the yellow seahorse Hippocampus kuda and the three-spotted seahorse H. trimaculatus from samples collected along the east and west coasts of India. Cross-species microsatellite loci amplification in populations of Indian seahorses showed significant numbers of(More)
The taxonomic ambiguity of the Indian mud crab (genus Scylla de Hann 1833) is still a cause of concern as several papers have been published with misleading identification. This is the first attempt to resolve the taxonomic uncertainty of the mud crab commonly available in Indian coastal waters using molecular genetic markers (ITS-1 and sequencing of COI(More)
The golden anchovy, Coilia dussumieri, though possessing discontinuous distribution along northeast and northwest coasts of India, it is being managed as unit stock for fishery assessment purposes. By considering the need for stock specific management of the species, mitochondrial ATP synthase 6 and 8 (ATPase 6/8) genes were analyzed for delineating genetic(More)
Thenus unimaculatus is one of the most important commercially exploited lobster species in India. The declining trend in catches as well as collapse of fishery in some localities necessitated assessment of the stock structure to manage this resource sustainably. We ascertained the genetic stock structure of T. unimaculatus along the Indian coast, using(More)