An heterobranchus bidorsalis in uska species han actinopterygii nga ginhulagway ni geoffroy sainthilaire hadton 1809. Forty fertilized eggs were put into a petri dish with water and viewed under the photomicroscope. The favoured catfish species in nigeria aquaculture include. Heterobranchus and clarias are the two most economic important genera in this family. The present study has employed molecular analysis using blood serum protein in addition to morphometry for characterization of the sympatric heterobranchus species.
Artemia shell free for three week, after the third day of hatching. Genetic variations in nonspecific immune response to. Photomicrographs of extruded oocyte through all developmental cell stages of live embryo to larval stage are documented with the. Materials and methods description of the study site this study was conducted between the period of june to august, 2015 at a reputable fish hatchery of egwenomhe farms located at 3 orogun street, by s and t bus stop, isihor.
Preliminary characterization of genetic strains in clariid species. Effect of sizes of female broodstock on fry survival and. Condition factor of heterobranchus bidorsalis fry fed on zooplankton treatments for 16 days the results of survival rate of h. The dearth of african giant catfish heterobranchus bidorsalis seeds poses great threat to its aquaculture and biodiversity, hence detailed. Characterization of genetic strains in clariid species. Short communication histological transmogrification in. The dearth of african giant catfish heterobranchus bidorsalis seeds. Pdf effect of photoperiod on eggs hatchability, growth. The dietary phosphorus requirement of heterobranchus bidorsalis fingerlings was investigated by feeding six purified diets containing varying levels of phosphorus inclusion within a range of 0.
Heterobranchus bidorsalis geoffroy sainthilaire, 1809. Search the history of over billion web pages on the internet. A systematic revision of the african catfish genus heterobranchus geoffroysainthilaire, 1809 pisces. Depending on the exact species involved, fish of this genus reach from 64 to 150 cm 25 to 59 in with h. Short description morphology morphometrics dorsal spines heterobranchuss the highest values for wg 5. Extracts from sixteen juvenile clariid fish samples artificially propagated and reared for sixteen weeks were electrophoretically analyzed and separated using. Sustainability of the consistent expansion of aquacultural industry depends on development of fish culture techniques in order to obtain the most efficient, safe and cost effective methods for producing aqua products.
Pdf on jul 30, 2018, isreal adebayo and others published effect of photoperiod on eggs hatchability, growth and survivability of hybrid catfish heterobranchus bidorsalis x. Embryonic and larval developmental stages of african giant. Genetic strainsof 20 domesticated samples of both species were characterized with four microsatellite markers. The frontal fontanelle is long and narrow while the occipital fontanelle is relatively long and is shaped like an oval. Oti 2003a reported the acute toxicity of water extract of the bark of milk bush, thevetia peruviana to african mud catfish hybrid clarias gariepinus x heterobranchus bidorsalis fingerlings. Pdf effect of three diets on growth and survival rates of african. Preliminary characterization of genetic strains in clariid. Some aspects of the biology of the catfish, heterobranchus bidorsalis geoffroy sainthilaire, 1809 clariidae in river ogbese.
Heterobranchus bidorsalis and clarias anguillaris species from culture in outdoor concrete tanks from niffr hatchery complex were collected for this study. Growth performance of hybrid catfish clarias gariepinusx heterobranchus bidorsalis in earthen ponds article pdf available in asian journal of biological sciences 54. Pdf growth performance and survival of heterobranchus longifilis. Fish growth was measured by weighing the juveniles every week and the weight differences, specific growth rate sgr and food conversion ratio fcr determined. Some growth parameters, condition factor and survival rate. Effects of sublethal concentrations of tobacco nicotiana tobaccum. The dearth of african giant catfish heterobranchus bidorsalis seeds poses great threat to its aquaculture and biodiversity, hence detailed knowledge and understanding of its embryology is indispensable for its artificial propagation and conservation programmes. These mosquito nets are converted into fishing nets by fishermen. Each of the culture treatment was fed on experimental diet containing 42. Heterobranchus bidorsalis hybrid juvenies mean weght 3. Pdf interspecific hybridization studies were carried out in heterobranchus. The potential probiotic bacteria associated with catfish. Heterobranchus longifilis has a growth rate which doubles that of c.
Three female heterobranchus bidorsalisthree male heterobranchus bidorsalis and three male clarias gariepenus 0. An heterobranchus bidorsalis in nahilalakip ha genus nga heterobranchus, ngan familia nga clariidae. Before stocking, the mean weight and mean length were taken and recorded. National institute lor freshwater fisheries research p. Introduction heterobranchus bidorsalis geoffroy saint hilaire, 1809 and h. Nonspecific immune response in three strains of heterobranchus bidorsalis challenged with the bacterium aeromonas hydrophilia was evaluated.
The experiment was conducted in a static rearing system consisting of. Digestibility of dry matter, protein, lipid, and organic matter of two fish meals, two poultry by. An 84day feeding trial was conducted to determine the effect of calcium ca supplemented diets on growth and body mineral composition of heterobranchus bidorsalis, initial mean weight 5. Studies were carried out to assess some macro and trace elements of mineral composition of the male and female heterobranchus bidorsalis adults exposed to graded concentrations 1. Coiviparative growth and survival of fry of clarias. Please enter valid pincode to check delivery available unavailable in your area.
The embryogenetic chronology of heterobranchus bidorsalis was monitored using brasser digital photomicroscope. Morphological characteristics and body indices of heterobranchus bidorsalis from three geographical. The time of occurrence of each stage was recorded and. Heterobranchus is a genus of airbreathing catfishes native to africa. The groups for the checks and measurements are summarized in table 3. Performance test measurements bs for some specific applications. O sofela 1federal university of agriculture, abeokuta, ogun state, nigeria. Research open access embryonic and larval developmental.
Clarias gariepinus, heterobranchus bidorsalis and their reciprocal hybrids o. The head of heterobranchus bidorsalis is shaped like an oval and has a rectangular dorsum. To avoid stress due to handling, the randomly selected fish were subjected to mild anesthetization in a 20 mg l 1 solution of ms tricaine. Heterobranchus bidorsalis geoffroy sainthilaire, 1809 african catfish upload your photos and videos. X heterobranchus bidorsalis male obtained from varying female sizes in concrete tanks. Embryonic and larval developmental stages of african giant catfish. Heterobranchus bidorsalis belongs to the family clariidae and is one of the commercially important fish species commonly cultured in nigeria due to its high resistance to disease, efficient utilization of various types of locally formulated fish feed and simple propagation technique 12 and can grow to a very large size 34. Growth performance and nutrient utilization of catfish. The same volume of nuclease free water was added and left to stand for 10 min. To avoid stress due to handling, the randomly selected fish were subjected to mild anesthetization in a 20 mg l 1 solution of ms tricaine methanesulfonate purchased from sigma chemical, st. Major stages were photographed ranging from unfertilized eggs to hatching and free swimming stage. The stress of transportation and acclimation handling, sorting, overcrowding, physical injuries, poor water quality are the primary contributing factors to fish. Eleven practical diets were formulated to contain graded levels of.
The fmi fullbore formation microimager gives you microresistivity formation images and dip data in waterbase mud, differentiating the structures and. Clarias gariepinus and heterobranchus bidorsalis using microsatellite markers. Heterobranchus bidorsalis geoffroy sainthilaire, 1809 old web site least concern media in category heterobranchus bidorsalis the following 2 files are in this category, out of 2 total. Essentiality of calcium supplement in the diets of. Growth performance and nutrient utilization of catfish hybrid heterobranchus bidorsalis x clarias gariepinus fed fermented sorghum sorghum bicolor waste meal diets obe, bernadine wuraola department of forestry wildlife and fisheries management faculty of agricultural sciences ekiti state university p. This plant was observed to increase the opercular ventilation of the fish as the concentration increased. The fish species were identified with the help of pictorial fish diagrams according to olaosebikan and raji. The serum was transferred into anticoagulant free testtube and stored in a.
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