Ferosekhan S.

Universidad de Las Palmas de Gran Canaria | ULPGC · Research Group of Aquaculture

An experiment was conducted to ascertain the initial rearing period required for Horabagrus brachysoma larvae before releasing them into the nursery tank for fingerling production. Hatchlings were reared for 7, 14, or 21 days in larval rearing tanks before stocking to nursery tanks. The 7-day-old larvae were significantly smaller at the end of the...

India has witnessed the growth of aquaculture from backyard farming to commercial fish culture, where Indian major carps contribute the majority of aquaculture production. Recently, striped catfish Pangasinodon hypophthalmus culture has become more popular in a few states of India. There are a large number of hatcheries that supply seed to farmers,...

A six weeks experiment was conducted to ascertain the best size of fry at stocking during fingerling production of Horabagrus brachysoma in a hatchery condition. Different sizes of Horabagrus brachysoma fry {T1 (15 mg), T2 (25 mg) and T3 (42 mg)} were selected and at the end of the fourth week of rearing, the T3 group shown the highest (P < 0.05) t...

An experiment was conducted to rear the larvae in total dark environment with a probability of enhanced growth and survival, as the Clarias batrachus larvae is photonegative in nature. Hence the larvae were reared at four density treatments (D1000, D2000, D3000 and D4000) with three replications of each treatment for 14 days under dark condition to...

Exogenous nucleotide supplementation during times of rapid growth and stress is preferred because de novo synthesis is insufficient and energetically a costly process. To overcome inefficient utilization of dietary nucleotides due to intestinal cell repulsion and dependency on pH, an efficient controlled delivery system based on chitosan nanopartic...

Genetic selection programmes in gilthead seabream mainly focus on traits related to growth, disease resistance, skeletal anomalies, or fillet quality. However, the effect of selection for growth on the reproductive performance of seabream broodstock has not received much attention. The present study aimed to determine the effect of selection for gr...

Clarias magur (Hamilton, 1822) is a highly priced commercially important species targeted for aquaculture diversification in India and SouthEast Asian countries. Weaning from live to formulated feed during larval rearing is critical for successful seed production. Hence, the present study aimed to standardise the effective weaning age to achieve hi...

Aquaculture is being the fastest food production sector in the world with an estimated production of about 179 million tonnes. The fish production from capture fisheries (96 million tonnes) is almost stagnant for many decades but the demand is rising significantly due to the awareness about the health benefits of fish consumption. The additional de...

Culture of the three IMC (catla, rohu and mrigal) and three exotic major carps (silver carp, grass carp and common carp) have been the main stay of aquaculture in India contributing a share of more than 70% of the inland production over the years. Although introduction of the exotic carps into the carp polyculture system during early sixties added...

Wallago attu is a bony fish in the Siluridae family and is considered to be a large catfish due to its large size availability in the wild, with fish reaching 45 kg. It is found in tanks, rivers, reservoirs and connected water bodies of the Indian subcontinent, Thailand, Vietnam, Cambodia and Indonesia. It is an excellent food fish due to high nutr...

The Asian catfish, Clarias magur, is an endangered fish species, which is immensely important due to its high commercial value in India and other South‐East Asian countries. Various anthropogenic activities and natural habitat loss have greatly impacted the biodiversity of C. magur in natural water bodies, leading to the addition of this species to...

Magur usually breed during the monsoon months of June-August. The fish are taken out of the broodstock tank or pond and kept separately in plastic containers for breeding operations. Males and females can be distinguished by secondary sexual characters. The abdomen of a gravid female is round and bulging with a reddish coloured button-shaped genita...

Citation: Ferosekhan, S.; Turkmen, S.; Pérez-García, C.; Xu, H.; Gómez, A.; Shamna, N.; Afonso, J.M.; Rosenlund, G.; Fontanillas, R.; Gracia, A.; et al. Influence of Genetic Selection for Growth and Broodstock Diet n-3 LC-PUFA Levels on

The comparative growth-related data does not exist at any stage of life in Heteropneustes fossilis (singhi) and Clarias magur (magur), and also a huge disparity in growth is reported in the wild stock. Hence, an attempt has been made to observe the growth parameters in both the catfish in laboratory condition. The results after rearing of 42 days i...

A 60 days feeding trial was conducted to investigate partial replacement of fishmeal (FM) with either soybean meal (SBM) or distillers dried grain solubles (DDGS) as alternative protein sources for milkfish, Chanos chanos fingerlings. Nine experimental diets were formulated with either fishmeal or with two alternative protein sources such as SBM or...

One of the factors that limits the replacement of fish meal (FM) and fish oil (FO) by plant ingredients in diets for marine fish, is their lack of long chain-polyunsaturated fatty acids (LC-PUFA). LC-PUFA are essential fatty acids for these fish species, which lack sufficient fatty acyl desaturase 2 (Fads2) activity to synthesize them. Nutritional...

Previous studies have shown that it is possible to increase the ability of marine fish to produce long-chain polyunsaturated fatty acid from their 18C precursors by nutritional programming or using broodstock with a higher fatty acyl desaturase 2 (fads2) expression. However, those studies failed to show the effect of these interventions on the expr...

Previous studies have shown that it is possible to nutritionally program gilthead seabream offspring through fish oil (FO) replacement by vegetable oils (VO) in the broodstock diet, to improve their ability to grow fast when fed low fish meal (FM) and FO diets during grow-out phase. However, in those studies broodstock performance was reduced by th...

The principle aim of this study is to elucidate the relationship between the fatty acid desaturase 2 gene (fads2) expression pattern in peripheral blood cells (PBCs) and liver of gilthead seabream (GSB), Sparus aurata broodstock in order to determine the possible use of fads2 expression as a potential biomarker for the selection of broodstock. This...

Larval growth and survival are significantly influenced by the various biotic and abiotic factors. Rearing tank background colour is one such factor affecting the larval production in finfish hatcheries. The present study evaluated the effect of five tank background colours (black, white, blue, green and red) on growth and survival of larvae of two...

Egg quality and early embryonic development are important aspects for successful artificial propagation of fish species of ecological and economical values, and therefore have been intensively researched. It has been demonstrated that several maternal factors including TGF-β, cyclin B, follicle cell transcripts and gonadal peptides like inhibins in...

Clarias magur is one such catfish, which has immense demand among consumers. Usually demand is satisfied by a combination of wild caught and cultured fi sh. However, a drastic reduction in wild populations has led to this species being listed as endangered by the International Union for Conservation of Nature (IUCN). Only a limited level of its pro...

The present article describes about the broodstock development, induced breeding, and seed production of the Mahanadi rita, Rita chrysea, a medium-sized catfish, of the bagridae family under captive conditions. Juvenile fish collected from the Mahanadi river and raised to broodstock in the captivity and successfully breed in captive condition for t...

Length-weight relationship (LWR) of 661 numbers of hatchery-produced magur, Clarias magur of all the life stages such as hatchlings, fry, fingerlings, juveniles, and adults were studied. The LWR of magur all the life stages were estimated and the equations are as follows, hatchlings W=0.0052*L1.282 (r²=0.8784), fry W=0.0088*L3.028 (r²=0.8113), fing...

Indian Aquaculture

Horabagrus brachysoma is popularly known as yellow catfish or Asian sun catfish. It is endemic to Western Ghats of Kerala, India and shows very limited geographical distribution. It is also reported from Southeast Asian countries. The population of yellow catfish shows gradual decline from the natural water bodies due to the rampant fishing through...

Pangasius pangasius known as yellowtail catfish, is widely distributed in natural water bodies of Indian sub-continent. Its abundance is also felt in the major east coast flowing major river system of India. Body is elongated, laterally compressed and without any scale. Head and abdomen are flat with constricted tail behind the extended caudal pedu...

Cobia Rachycentron canadum, also known as black kingfish, is the only species in the family Rachycentridae. It is commonly found throughout the world, except the central and eastern Pacific (Shafferand Nakamura 1989). Cobia is a pelagic species found in the water column of the open ocean from the surface to a depth of 1200 m (Shaffer and Nakamura 1...

The incidence of deformation in the larvae is considered as a problem as well as possesses economic challenges in the aquaculture industry. The frequency of its incidence ranges from 4-5% during normal larval production in the hatchery. In this study, we tried to segregate and classify the yellow catfish, Horabagrus brachysoma deformities. The diff...

The contribution of freshwater aquaculture produce in India is noteworthy. Indian major carps are still at the head of production and fi sh production is projected to reach about 12 million tonnes by 2020. Hence there is an urgent need to utilise modern techniques for production over the traditional methods, increase productivity and to diversify sp...

ICAR-Central Institute of Freshwater Aquaculture had its modest beginning as the Pond Culture Division of the Central Inland Fisheries Research Institute, which was established at Cuttack, Orissa in 1949. The Division was later upgraded as the Freshwater Aquaculture Research and Training Centre (FARTC) established at Bhubaneswar in 1976 with UNDP/F...

The present experimental trial was conducted to determine the optimal dietary lipid requirement of juveniles of Pangasianodon hypophthalmus (Sauvage, 1878) commonly referred to as the striped catfish using completely randomized design (CRD). Purified diets with five different dietary lipid levels (3, 6, 9, 12 and 15%; fish oil/sunflower oil (1:1) w...

Spermatogenesis is a highly co-ordinated and complex process. In vitro propagation of spermatogonial stem cells (SSCs) could provide an avenue in which to undertake in vivo studies of spermatogenesis. Very little information is known about the SSC biology of teleosts. In this study, collagenase-treated testicular cells of farmed catfish (Clarias ba...

India is well known for carp aquaculture, related to an intensive research effort and then massive adoption by farmers; carp remains a mainstay of Indian aquaculture. Next to carps, catfishes are considered to be potential cultivable species. Among these, Clarias batrachus is a preferred medium-sized catfish for pond culture. Clarias batrachus, pop...

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...

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 investigates carcass traits of market class Hilsa, Tenualosa ilisha (Hamilton, 1822) to calculate meat yield and provide baseline information for manual/machine processing. Specimens of hilsa fish ranging from 800 to 850 g (820.5±12.1 g) were collected from Howrah, West Bengal fish market. Carcass yield, offal yield and carcass cu...

The number, shape, sizes of intermuscular bones in table size (around 900g) hilsa (Tenualosa ilisha) has been studied after microwave cooking and dissection. Hilsa intermuscular bones have varied shape and size. These pin bones are slender and soft which of two types, Y Pin bones and straight pin bones. Total number of pin bones in hilsa was found...

Induced breeding and seed rearing of an endangered bagrid catfish, Horabagrus brachysoma were conducted. The female brood responded to stripping either in single or double dose of ovaprim at 0.8-1.5 ml/kg body weight at 13-20 h latency period. The stripped egg weight varied between 14-20 g and the fecundity of the catfish ranged 1.6-1.8 lakhs/kg bo...

Exogenous proteolytic enzyme supplementation is required in certain disease conditions in humans and animals and due to compelling reasons on use of more plant protein ingredients and profitability in animal feed industry. However, limitations on their utility in diet are imposed by their pH specificity, thermolabile nature, inhibition due to a var...

A controlled release delivery system helps to overcome the problem of short life of the leutinizing hormone releasing hormone (LHRH) in blood and avoids use of multiple injections to enhance reproductive efficacy. Chitosan- and chitosan-gold nanoconjugates of salmon LHRH of desired size, dispersity and zeta potential were synthesized and evaluated...

The challenge to global aquafeed manufacturers in today's economy is to operate as efficiently as possible, without compromising quality, and keeping costs in check. Using classical wet chemistry methods, analysis of feed ingredients and feed samples can take several hours to complete, requiring high-cost reagents and chemicals. Feed mills lacking...