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. There are currently 42 recognized species in this genus. It is a highly valuable fish species amongst the indigenous african populations. The 96hlc sub50 of gammalin 20 was determined as 2. The morphometry and diet of chrysichthys nigrodigitatus in epe lagoon were investigated between january and july 2008. Omnivorous, feed on seeds, insects, bivalves and detritus ref. All structured data from the file and property namespaces is available under the creative commons cc0 license. The occurence of heavy metals in gills,muscles, and liver. Certain differences were found in their food habits. It sounds like the drone of a guitar amplifier, but its actually the amorous serenade of a fish called the plainfin midshipman.
Chrysichthys nigrodigitatus pdf the silver catfish, chrysichthys nigrodigitatus lacepede. Here we listed some of the best pdf readers for windows, which can help you to view your pdf files. Atlas ichthyologique des indes orientales neerlandaises. Although it was a sore subject with cephalus, he told the boy the story behind the javelin. One hundred chrysichthys nigrodigitatus were randomly selected. Download this complete zoology project material titled. Download free adobe acrobat reader dc software for your windows, mac os and android devices to view, print, and comment on pdf documents.
The fish was ground into fine paste with a little quantity of water added us. To study the bioaccumulation of heavy metals from synodontis clarias s. The food and feeding habits of the catfishes, chrysichthys. Four kilograms of fresh chrysichthys nigrodigitatus was minced into fine particles with an initial ph of 7. Chrysichthys nigrodigitatus and hepsetus odoe are two fishes well known in cameroon. Helminth bioload of chrysichthys nigrodigitatus lacepede 1802 from lekki lagoon lagos, nigeria. The first determination was that they belonged to the species distichodus rostratus. The following morning, cephalus and his men woke before aeacus, and so the kings youngest son, phocus, talked with them. Genetic diversity of chrysichthys nigrodigitatus in the lagos. The boy noticed cephalus javelin and asked him where hed gotten it. Morphometric characteristics and condition factor of. Chrysichthys nigrodigitatus in the crossriver estuary, nigeria. P ratio manipulations on the growth, elements, lipid, fatty acids and protein contents of tisochrysis lutea and nannochloropsis oculata. Levels and patterns of genetic diversity in wild chrysichthys nigrodigitatus in the lagos lagoon complex.
Dec 12, 2014 the understanding of how nitrogen n to phosphorus p ratios regulate growth and chemical composition of algae is important to control the nutritional value of microalgae for industrial application. A mean relative fecundity of 231 eggscm or eggsg of fish was obtained for this population. Feeding interrelationship of caranx hippos ligneous. A total of 80 dna samples from four river populations were analyzed at four microsatellite. The aspects of the biology of the catfish chrysichthys nigrodigitatus were investigated from august to october 2015 in nwaniba river, akwa ibom state, nigeria. Page designed through the cooperative efforts of interagency itis teams. Samples 14 are unfermented cooked while samples 58 were fermented, not cooked. Fish samples were collected at designated points on the lagoon over an eight month period covering both rainy and dry seasons and target organs such as gill, bone and flesh were analyzed for eight metals. Chrysichthys nigrodigitatus is a species of fish in the family of claroteidae hopkins et al. Reproductive strategy of chrysichthys nigrodigitatus.
Some aspects of ecology of chrysichthys nigrodigitatus lacepede in river niger, nigeria abstract. Endoparasitaemia of chrysichthys nigrodigitatus in a tidal. Feeding becomes specialized with age and size, larger fish may feed on decapods and fish ref. Lagos state, southvvest nigeria ajado, edward oluwarotimi. Read pdf files right in your browser the pdf download extension. Pdf endoparasitaemia of chrysichthys nigrodigitatus in a. See below for the abstract, table of contents, list of figures, list of tables, list of appendices, list of abbreviations and chapter one. This species attains a maximum length of about 70 cm. Chrysichthys nigrodigitatus, a bagrid species which is greyishblue in colour, is restricted to the bottom of deep water, omnivorous.
Chrysichthys nigrodigitatus lacepede, 1803 discover life. This page was last edited on 15 december 2019, at 07. Bacteria occurrence in sarotherodon malarotheron and chrysichthys nigrodigitatus in brackish water environment abidemiiromini, a. Some aspects of ecology of chrysichthys nigrodigitatus. Metamorphoses by ovid, part of the internet classics archive. To contribute with their ecological knowledge, the condition factor and diet of these two. Jan 18, 2016 last week we received for the first time an unsusal shipment containing distichodus unknown to us from nigeria. Morphometry and diet of chrysichthys nigrodigitatus lacepede. Cephalus of phocis was a mortal prince in greek mythology, famous for being the husband of procris, the athenian princess. Endoparasitaemia of chrysichthys nigrodigitatus in a tidal freshwater body in the niger delta, nigeria uche 1arinze,2, francis sikoki1,2, sidney nzeako2 1centre for marine pollution monitoring and seafood safety, university of port harcourt nigeria.
Organochlorines in chrysichthys nigrodigitatus and liza grandisquamis from nigeria bull. Ng is an academic website built in nigeria that is registered with the corporate affairs commission cac. Fish samples were collected during the months of february, march and april, 20 from oyan lake and conveyed to the laboratory for analysis. Chrysichthys nigrodigitatus lacepede 1802 is a common silver coloured african catfish occurring in nigeria and several west african countries. During the summer, this sonorous sea creature hums to attract. Effects of different processing methods on the proximate. The magical world of myth and legend cephalus and eos, the dawn goddess the short story and myth of cephalus and procris the myth about cephalus and procris is featured in the book entitled the age of fable, or stories of gods and heroes by thomas bulfinch. Chysichthys nigrodigitatus lacepede, 1803 melanodactylus nigrodigitatus lacepede, 1803 pimelodus nigrodigitatus lacepede, 1803 homonyms chrysichthys nigrodigitatus lacepede, 1803 common names basagoin bethuguye in language. Proximate and mineral quality changes in fillets of three fish species mugil cephalus, chrysichthys nigrodigitatus and oreochrumis niloticus at frozen storage sub 0c. This fish can be raised in both fresh and brackish water environments. 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.
Many comments have been posted about metamorphoses. Chrysichthys is a genus of claroteid catfishes native to africa. Fish abundance ranged from 53 individuals for mormyrus rume to 2,818 for hemichromis fasciatus. This freshwater fish is of great commercial value at yabassi and is interesting for consumption after boiling or smoking.
We thought initially that all or fish would belong to the very same species, despite. Pollution in chrysichthys nigrodigitatus from two polluted lagoons bassey o. Between may and october 1990, fecundity, egg size and condition factor of chrysichthys nigrodigitatus lac. The keeping quality and shelf life of fermented and unfermented chrysichthys nigrodigitatus were monitored in this study.
Pdf levels and patterns of genetic diversity in wild. Three methods frequency of occurrence, gravimetric and numerical were used to study food, feeding habit and condition factor. Cephalus in greek mythology greek legends and myths. Singing fish hums to attract mates plainfin midshipman. Proximate and mineral quality changes in fillets of three. Health status of chrysichthys nigrodigitatus in response to aquatic pollution in epe, lagos and ologe lagoons, southwest nigeria kingsley chukwuemeka kanu1, emmanuel taiwo idowu2 1department of environmental management and toxicology, michael okpara university of agriculture, pmb 7267 umudike, nigeria. Pdf chemical composition and antibacterial activity of. Proteomic biomarkers as indicator of aquatic pollution in. Chemical composition and antibacterial activity of oils. The major fishing methods employed for collecting the 600 specimens were cast netting and set netting. Seasonal variation in the bioaccumulation of heavy metals. Department of fisheries and aquaculture technology, the federal university of technology, akure, nigeria. A study on the reproductive strategy of chrysichthys nigrodigitatus was conducted from october 2015 to august 2016, in the nkam river in yabassi. The occurence of heavy metals in gills,muscles, and liver of chrysichthys nigrodigitatus with abstract, chapter 15, references and question.
The chemical composition and the antibacterial activity of these fishes derived oils are unknown. Lengthweight models and condition factors of fishes from. In this video, we created simple steps how to how to download and install free pdf reader. Get or print a qr code for this species profile, or try our lfs label creator. Bacteria occurrence in sarotherodon malarotheron and. B1, chukwu l o1, srivastava s2 and reddy j2 1department of marine sciences, ecotoxicology laboratory, faculty of science, university of lagos, nigeria 2proteomics laboratory, faculty of bioscience and bioengineering, indian institute of technology. The internet classics archive metamorphoses by ovid. A study was conducted to determine and compare the proximate composition of c hrysichthys nigrodigitatus and chrysichthys walkeri from oyan lake, ogun state, nigeria. Endoparasitaemia of chrysichthys nigrodigitatus in a tidal freshwater body in the niger delta, nigeria. The chemical composition and the antibacterial activity of these fishes derived. The genetic diversity and population structure of chrysichthys nigrodigitatus were evaluated using a 443 base pair fragment of the mitochondrial control region. One hundred and fifty 150 specimens of sarotherodon melanotheron and 150 specimens of chrysichthys nigrodigitatus were collected from betterlife fish market in makoko area of lagos state between juneaugust 2016 to provide information on the size distribution, lengthweight relationship, determine regression equation and coefficient of determination of morphometric. Preparation and digestion of fish samples the fish samples were blotted dry and weighed, then each fish wrapped in foil and oven dry. Chrysichthys nigrodigitatus lacepede, 1803, an endangered.
Discover lifes page about the biology, natural history, ecology, identification and distribution of chrysichthys nigrodigitatus lacepede, 1803 discover life. Chrysichthys nigrodigitatus is an important fishery in the cross river system. Research article proximate composition of nutrients in. A study on the reproductive strategy of chrysichthys nigrodigitatus was conducted from october 2015 to august 2016, in. The impact of acute exposure of gammalin 20 an organochlorine pesticide was investigated in a static bioassay test over a 964day period on the fingerlings of chrysichthys nigrodigitatus lacepede. Research article and condition factor of silver catfish. Pdf reproductive strategy of chrysichthys nigrodigitatus. Download free pdf reader for windows now from softonic. Size, lengthweight relationships, reproduction and trophic biology of chrysichthys auratus and c. The proximate composition of protein, fat, moisture, ash and crude. A study on the reproductive strategy of chrysichthys nigrodigitatus was conducted from october 2015 to august 2016, in the nkam river in yabassi, littoral region of cameroon. The lengthweight relationship and condition factor of. The length frequency distribution of chrysichthys nigrodigitatus was.
Results and discussion a total of three hundred and sixty four chrysichthys species, comprising of two hundred and forty five chrysichthys nigrodigitatus, and one hundred and nineteen chrysichthys auratus longifilis were analysed. Imeheffects of different processing methods on the proximate composition of chrysichthys nigrodigitatus from great kwa river, nigeria european academic research vol. Health status of chrysichthys nigrodigitatus in response to. Blolo in ewe catfish in english catfish in english deblolo in ewe. Mix 25 ml diethyl either with 25 ml alcohol neutralizes with 0.
Absolute fecundity of 28 086 eggs found in 64 cm fish in this study is the highest so far reported for c. Helminth bioload of chrysichthys nigrodigitatus lacepede. Adults occur in shallow waters of lakes less than 4 m, over mud and fine sand bottom. Research article proximate composition of nutrients in fresh. Acidityrancidity levels, chemical studies, bacterial. Open, download, or view adobe acrobat files as pdf or html files in your browser. Chrysichthys walkeri fed mostly on insects, chrysichthys filamentosus on crustaceans and chrysichthys nigrodigitatus on molluscs. Studies on the biology of silver catfish chrysichthys. Gut parasites of chrysichthys nigrodigitatus lacepede. Dietaries reveal 7 identified food items and an unidentified mass. Study of the feeding interrelationship of caranx hippos, chrysichthys nigrodigitatus, ethmalosa fimbriata and mugil cephalus in the lagos lagoon, nigeria, revealed that algae and diatoms formed the main food items of the four fish species. Samplings were made monthly from december 2015 to may 2017 with seines, gill nets hawks and a total of 9,302 individuals were collected.
It occurs in shallow waters of lakes chrysichthys nigrodigitatus. Bioaccumulation of heavy metal in silver catfish chrysichthys nigrodigitatus, tilapia zillii and macrobrachium macrobrachion caught in badagry creek, lagos nigeria aderinola, oj department of zoology and environmental biology, faculty of science, lagos state university, ojo kusemiju, v. Among the eight populations collected comprising 129 individuals, a total of 89 polymorphic sites defined 57 distinct haplotypes. Size, lengthweight relationships, reproduction and trophic. The fecundity f of this population varied from 3 046 eggs total length, l28. Endoparasitic fauna of chrysichthys nigrodigitatus lacepede. Population dynamics and gillnets selectivity of chrysichthys. Endoparasitic fauna of chrysichthys nigrodigitatus lacepede, 1802 in the new calabar river, choba, rivers state, nigeria sidney nzeako, arinze uche, helen imafidor, abraham ngozi abstract a study on the endoparasitic fauna of 50 species of chrysichthys nigrodigitatus in the new calabar river. At one time cephalus was the owner of the legendary hunting dog laelaps, and also a comrade of the theban general amphitryon. Chrysichthys nigrodigitatus is more abundant in the east and southsouth nigeria where the bottom deposits consists of soft and hard substrate. A total of 1436 specimens were examined in the study of the food habits of the three chrysichthys species in lekki lagoon. The study assessed quantitatively the threat status of silver catfish, chrysichthys nigrodigitatus lacepede.
Our primary objective is to assist and guide final year students with well researched and quality project topics, project works, research guides and project materials, at a very reduced and affordable price. Some reproductive aspects of chrysichthys nigrodigitatus. Bioaccumulation of heavy metals and parasitic fauna in. Chrysichthys nigrodigitatus were monitored to assess the pollution status in lagos lagoon. This work was aimed at ascertaining the population dynamics and gillnets selectivity of chrysichthys nigrodigitatus.