Ashis Saha

• Central Institute of Freshwater Aquaculture

Livelihood improvement of Scheduled Caste fish farmers of Sonarpur block of South 24 pargans of West Bengal, India though intervention of Scientific Aquaculture.

Toll-like receptors (TLRs) are key pattern recognition receptors (PRRs) that detect pathogen-associated molecular patterns (PAMPs) and elicit broadly acting innate immune responses. This study accomplished the identification, cloning, and sequencing of Labeo rohita TLR18 (LrTLR18). Structurally, LrTLR18 possesses a signal peptide, six leucine-rich...

A 60-day feeding trial was conducted to study the effects of levels of fish oil (FO), 0 (FO-0), 30 (FO-30), 60(FO-60), 90 (FO-90),120 (FO-120) and 150 (FO-150) g kg 1 feed on growth, nutrient utilisation, whole-body chemical composition, tissue fatty acids profile, blood metabolites and Δ6 fad gene expression in Labeo rohita fingerlings. Two hu...

The paper deals with Livelihood improvement through Aquaculture of Scheduled Caste Farmers of Kultali Block of West Bengal ,India

Abstract Background Caspase-8, a member of the family of conserved cysteine proteases, plays a crucial role in the initiation phase of the apoptotic death-signaling cascade and thereby attracts interest for its study across the animal species including fish. In India, rohu (Labeo rohita) is an important freshwater fish species; thus, this study on...

BACKGROUND Silver barb (Puntius gonionotus) is a medium‐sized carp that is promising for freshwater aquaculture in Asia. This study's aim was to investigate the ideal dietary α‐linolenic acid (ALA): linoleic acid (LA) ratio for maximizing long‐chain polyunsaturated fatty acid (LC‐PUFA) synthesis and their deposition in the muscle of silver barb, as...

Interleukin-1 receptor associated kinase (IRAK1) is one of the crucial signal transduction mediators in TLR/IL-1R signaling pathways in host immune system. To investigate about it in rohu (Labeo rohita), one of the economically important freshwater fish species in the Indian subcontinent, we cloned, characterized and analyzed its expression followi...

Among various caspases, caspase-9 plays a crucial role in the initiation phase of apoptotic cascade. To investigate about it in a high-valued freshwater fish species rohu (Labeo rohita), we cloned and characterized full-length caspase-9 cDNA (Lrcasp9) and analyzed its expression following bacterial infections and anti-viral vaccinations. The Lrcasp...

The cover page of General and Comparative Endocrinology, volume 263, published on 13 April 2018 is the picture presented in our article 'Gonadotropin receptors of Labeo rohita: Cloning and characterization of fulllength cDNAs and their expression analysis during annual reproductive cycle' published in the same journal page 21-31.

Follicle-stimulating hormone (Fsh) and luteinizing hormone (Lh), secreted from pituitary, stimulate gonadal function by binding to their cognate receptors FSH receptor (FSHR), and LH/ choriogonadotropin receptor (LHCGR). Rohu (Labeo rohita) is a commercially important seasonal breeder freshwater fish species, but till date, the regulation of expres...

Silver barb (Puntius gonionotus) is considered a promising medium carp species for freshwater aquaculture in Asia. This study in silver barb was carried out to evaluate the effects of total or partial substitution of dietary fish oil (FO) with linseed oil (LO) on growth, nutrient utilization, whole-body composition, muscle and liver fatty acid comp...

This a patent for obtaining year round gonad maturity and spawning in Indian major carps and other carp applying particular photo-thermal regime

The fertilised eggs of Asian sun catfish, Horabagrus brachysoma (Günther 1864) were demersal and pale yellow in colour with equal perivitelline space. First cleavage appeared at 49 min (± 3 min) and the size of the blastomeres reduced as the development stage proceeded. Morula stage was reached 3 h 37 min (± 15 min) post-fertilization. The embryoni...

In world, at present more than 800 million continue to suffer from chronic malnourishment and the global population is expected to grow by another 2 billion to reach 9.6 billion people by 2050. Therefore, it is a huge challenge of feeding the growing population, and at the same time safeguarding its natural resources for future generations. The mic...

Kisspeptin is an important regulator of reproduction in mammals and presumably non-mammalian species. In the Indian subcontinent, rohu (Labeo rohita) is a commercially important seasonal breeder freshwater fish species, but till date, the expression of kisspeptin gene during different phases of annual reproductive cycle has not been investigated. T...

The yellow tail catfish, Pangasius pangasius embryonic and larval development study was carried out. The eggs were adhesive and transparent in colour with equal perivitelline space. First cleavage appeared at 00:49 ±00:02 h resulting two equal blastomers. The eight cells, thirty two cell and morula stage appeared at 01:30 ± 00:06, 02:04 ± 00:10 and...

The present study was conducted to determine fatty acid profile of fillet and liver and whole body nutrient content of P. gonionotus and P. sarana. The crude protein content was 16.61±0.32 and 17.18±0.14% in P. gonionotus and P. sarana, respectively. The total lipid content was higher (P<0.05) in P. gonionotus (5.60±0.15 %) than P. sarana (3.92 ±0....

Mammalian Pou5f1 is a known transcriptional regulator involving maintenance of embryonic and spermatogonial stem cells. Little is known about teleost Pou2, an ortholog of mammalian Pou5f1. Evidences of discrepancy in expression pattern between fish species were documented. To better understand, we have cloned and characterized Pou2 gene of farmed r...

Silver is a noble metal with antique values and antimicrobial property. Being its colloidal form, silver nanoparticles have wide commercial application. They are being used extensively in the aquaculture industry. Considering their dumping and leaching in water, experiments were conducted to estimate their toxicity on zebrafish (Danio rerio). Silver...

A short term histological study was conducted to determine the impacts of technical grade synthetic pyrethroid insecticide, cypermethrin and carbamate pesticide, carbofuran on different phases of ovarian maturation of freshwater indigenous carp, Labeo rohita. Adult females of L. rohita were exposed to sublethal doses of carbofuran (0.06, 0.15 mg/L)...

Winter School published by ICAR-CIFA

We report here for the first time significant advancement of sexual maturation and off-season breeding of Indian major carp (IMC) species, rohu (Labeo rohita), catla (Catla catla) and mrigal (Cirrihinus mrigala) through photothermal manipulation during winter at least 4-5 months prior to their normal spawning season (June-August). The spent fishes...

Induced spawning of the freshwater spiny eel, Mastacembelus aculeatus was undertaken to obtain fertilized eggs for studying the embryonic development. The fertilized eggs were sticky, demersal and green in colour. The perivitelline space of fertilized eggs was unequal. Several oil globules were visible on the yolk and sizes varied from 0.1-0.57 mm...