Chrysichthys nigrodigitatus pdf files

The high value of ash in the fish species is an indication of its high mineral content like magnesium, calcium, potassium, and zinc. Chrysichthys nigrodigitatus is highly valued food fish in ivory coast and is among the dominant fish of commercial catches. Chrysichthys nigrodigitatus pdf the silver catfish, chrysichthys nigrodigitatus lacepede. The chemical composition and the antibacterial activity of these fishes derived oils are unknown. Studies on the biology of silver catfish chrysichthys. A study on the food and feeding habit of chrysichthys nigrodigitatus lacepede was conducted in river niger within the region of oshimili local government area of delta state nigeria. The length and weight of the total catch of the fish chrysichthys nigrodigitatus was taken and recorded to the nearest centimetre and weight in grams. Lengthweight relationship and condition factor of silver. Chrysichthys nigrodigitatus were evaluated using a 443 base pair fragment of the mitochondrial control region. Among the eight populations collected comprising 129 individuals, a total of 89 polymorphic sites defined 57 distinct haplotypes.

Pdf chemical composition and antibacterial activity of. Growth pattern and morphometric discrimination of two. Development and diversification of species for aquaculture. Fish samples were collected during the months of february, march and april, 20 from oyan lake and conveyed to. A mean relative fecundity of 231 eggscm or eggsg of fish was obtained for this population. Histopathological alterations in the liver and kidney of. Open access journal of fisheries and aquatic science issn 18164927 doi. You can merge pdfs or a mix of pdf documents and other files. The various dehydration and smoking treatments had effect on the proximate composition.

Chemical composition and antibacterial activity of oils. The aspects of the biology of the catfish chrysichthys nigrodigitatus were investigated from august to october 2015 in nwaniba river, akwa ibom state, nigeria. Proteomic biomarkers as indicator of aquatic pollution in. Studies were conducted on chrysichthys nigrodigitatus and c. The mean haplotype diversity and nucleotide diversity of the. Production of catfish, chrysichthys nigrodigitatus, in brackish water ponds in nigeria using groundnut cake as supplemental feed. Stock assessment of chrysichthys nigrodigitatus in the mid cross river flood system, south eastern nigeria. The fecundity f of this population varied from 3 046 eggs total length, l28.

Fishery unit, department of zoology, nnamdi azikiwe university pmb 5025, awka, nigeria. Click, drag, and drop to reorder files or press delete to remove any content you dont want. They have been suggested to provide numerous health benefits for humans involving antimicrobial properties. Between may and october 1990, fecundity, egg size and condition factor of chrysichthys nigrodigitatus lac. Acidityrancidity levels, chemical studies, bacterial. Chrysichthys nigrodigitatus and hepsetus odoe are two fishes well known in cameroon. Click add files and select the files you want to include in your pdf. A comprehensive strength weaknesses opportunities and threats swot analysis of the aquaculture industry in ghana is underway utilizing lessons learned from past, the current, and ongoing aquafish crsp projects. Areas required to maintain or enhance hcvs generally, most parts of the northern triangle of lot 8 and most parts of lot 9 are required to maintain or enhance biological hcvs, besides lot 9 being in ramsar. Chrysichthys nigrodigitatus had the highest ash content 7. A case study of new calabar river basin theodore athanasius allison department of anatomy, faculty of basic medical science, college of health sciences, university of port harcourt, nigeria. It is a highly valuable fish species amongst the indigenous african populations. Th e tissue was homogenized with 1 ml of pbs and spinned at 3,000 rpm for 10 min at 40c.

Chrysichthys walkeri fed mostly on insects, chrysichthys filamentosus on crustaceans and chrysichthys nigrodigitatus on molluscs. The food and feeding habits of the catfishes, chrysichthys. Eleven samples of chrysichthys nigrodigitatus and one sample c. A total of 1436 specimens were examined in the study of the food habits of the three chrysichthys species in lekki lagoon. In lake bewacodji, the fish composition comprised four. Production of catfish, chrysichthys nigrodigitatus, in. The study assessed quantitatively the threat status of silver catfish, chrysichthys nigrodigitatus lacepede. A total of 90 specimens were collected with the help of fishermen. Fresh silver catfish 100 samples were collected from twenty major processing centers from lagos state, nigeria by purposive sampling method in frozen sterile containers ziploc. Summary report for olam palm hcv assessments final. Certain differences were found in their food habits.

See below for the abstract, table of contents, list of figures, list of tables, list of appendices, list of abbreviations and chapter one. Chrysichthys nigrodigitatus and minced using a clean scalpel. Chrysichthys nigrodigitatus claroteidae, the african bonytongue, heterotis niloticus osteoglossidae, and the african catfish, clarias gariepinus clariidae. The objective was to document intra and interspecific variations in molecular structure among four populations of the genus in the river.

Chrysichthys nigrodigitatus was the most abundant species both within the family claroteidae. The total length tl, was from the tip of the snout to the extreme of the caudal fin was. Among the eight populations collected comprising 129 individuals, a total of. Claroteidae, with consideration of their biogeography beatrice adepogourene, guy g. Absolute fecundity of 28 086 eggs found in 64 cm fish in this study is the highest so far reported for c. The genetic diversity and population structure of chrysichthys nigrodigitatus were evaluated using a 443 base pair fragment of the mitochondrial control region. It is suggested the observed diversity in feeding habits might be due to an active. Some reproductive aspects of chrysichthys nigrodigitatus. The study lasted 5 months, from october to march, and showed that the demand feeder improves the growth rate of the fish and the feed conversion.

How to merge pdfs and combine pdf files adobe acrobat dc. Lekki lagoon supports the major fishery in nigeria. Histopathological alterations in the liver and kidney of the fish chrysichthys nigrodigitatus due to heavy metals in niger river charity i nsofor1,obiora o ikpeze 2, uche c ngenegbo 2,chika f ikeogu 3,josiah c okonkwo 4 1. Rearrange individual pages or entire files in the desired order. Samples were immediately placed on ice and measured. Claroteidae introduced in an artificial pond of benin, west africa. Get or print a qr code for this species profile, or try our lfs label creator. Chrysichthys nigrodigitatus lacepede 1802 is a common silver coloured african catfish occurring in nigeria and several west african countries. Th e supernatants were removed, and then 1 ml of whole cell lysis buff er was added to the 100 mg of homogenized tissue. A study was conducted to determine and compare the proximate composition of chrysichthys nigrodigitatus and chrysichthys walkeri from oyan lake, ogun state, nigeria. The present study investigates the helminth fauna of wild. Genetic diversity of chrysichthys nigrodigitatus in the.

Implications for fishery management and policy 1 l a b z b k b. Chrysichthys is a genus of claroteid catfishes native to africa. Samples of chrysichthys nigrodigitatus were collected twice in july 2nd and 4th saturday, twice weekly through the other months tuesdays and saturdays from august to november. Stock assessment of chrysichthys nigrodigitatus in the mid. The culture of this fish is widely practiced in many areas and constitutes one of the largest groups of farmed freshwater fish. Helminth bioload of chrysichthys nigrodigitatus lacepede 1802 from lekki lagoon lagos, nigeria. Effects of smoking methods on quality, microbial, and. Determination of selected heavy metal and analysis of. When condition factor value is higher it means that the fish has attained a better condition.

Helminth bioload of chrysichthys nigrodigitatus lacepede. Merge pdf files combine pdfs in the order you want with the easiest pdf merger available. A total of 249 chrysichthys nigrodigitatus were bought once a month april september 2018 from artisanal fishers at itak nyanyangha landing site. To change the order of your pdfs, drag and drop the files as you want. Th e whole cell lysis wcl is composed of 50 mm nacl.