DOCSLIB.ORG

Journal of Asian Scientific Research

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Journal of Asian Scientific Research Journal of Asian Scientific Research, 1(6), pp.299-311 2011 © AESS Publications, 2011 Page 298 Journal of Asian Scientific Research, 1(6), pp.299-311 2011 Fish fauna of Agbokum waterfalls in South Eastern Nigeria Abstract Author Knowledge of ichthyofauna of waterfalls is important in the development and management of conservation measures. In order to establish the fish composition and IKPI Gabriel and OFFEM diversity of a tropical waterfalls monthly fish samples and physic-chemical parameters Benedict were investigated in wet and dry seasons, over a two year period in three regions along Department of Fisheries, Faculty of the length of Agbokum waterfalls. Water turbulence, size of river, flow velocity, water Agriculture and Forestry, Obubra campus, Cross River University of Technology, level, temperature, transparency and food availability explained the observed seasonal Nigeria.*Phone:08055930219 and spatial changes in fish abundance. Five thousand four hundred and eighty four E-mail: [email protected] (5484) fish representing 22 species belonging to 16 genera from 9 families were sampled in both dry and wet seasons, with 10 species being restricted to wet season Key Words: Waterfalls, and only 1 in the dry. Cichlidae, Clariidae and Cyprinidae were the most abundant ichthyofauna, Diversity function, families accounting for 56.7% of the total catch with Tilapia zillii , Clarias gariepinus richness index, Relative and Labeo coubie dominating overall catch constituting 35.5%. Among the three abundance dominant species, two benthic fishes (L. coubie and C. gariepinus) showed inverse distributional pattern with Clariid fish ( C. gariepinus ) most abundant downstream and least represented upstream. Cyprinid (L. coubie ), on the other hand, dominated the upstream reaches and scarce downstream. Five species were site specific because of the association with only the midstream portion of the river (L. senegalensis), upstream (A. gardneri, A. filmentosus and E. sexfasciatus) and downstream reaches (H. fasciatus, A. occidentalis and C. nigrodigitatus). The two benthic species ( C. gariepinus and L. coubie ) produced a bimodal size class distribution in the three sites while T. zilli showed tri-modal size class. Equitability index (E) was generally low ranging from 0.03 (midstream) to 0.14 (downstream). Downstream reaches recorded highest diversity throughout the year with higher values for the wet season samples than dry. Wet season and Downriver region of the waterfalls were therefore critical in maintaining fish stock of the water falls. Introduction quiescent environment. It may also be useful in the aquatic ecology by aerating water bodies that lack Waterfalls is a place where a stream or river falls dissolved oxygen, represents significant barriers to from a high place example over a cliff or rock (Cano upstream movement of fish, serve as natural 2000). It is caused by gravity taking its effect on monuments and source of revenue generation water and pulls it down a cliff (Chernicoff et al.c because of their tourism potentials (Ayodele 1988, ,1997). Large amount of stream energy are expended Krinitskii 1972). Inhabitants of waterfalls use it for at waterfalls. Waterfalls are associated with “tier,” a drinking, irrigation and other domestic purposes. free-fall water drop, beginning when the water leaves the bed of the river or contact with rock and ends The Agbokim waterfall is a product of two rivers, when the water hits rock or the bed of the river again River Ekim and River Bakue. River Ekim is divided (Chester et al , 1999). into three streams, while River Bakue has four streams. These seven streams flow into a floodplain, The water body is important in fisheries and from where they independently cascade over steep aquaculture potentials, hydrology, biodiversity, cliff which provides seven-faced falls into the casket biodiversity conservation, ecotourism and geological or waterfalls. The waterfalls is locally called features (Fischer and Harris 2003). Waterfalls are “Nnabikim”, named after the goddess of the known to form a rich biome for indigenous and waterfalls or “Anigisa” meaning seven denoting the exotic species which are swept upstream and swept number of streams that flow to the casket. Waterfalls over the waterfalls to settle downstream in a more in many local communities are used as places of © AESS Publications, 2011 Page 299 Journal of Asian Scientific Research, 1(6), pp.299-311 2011 traditional and ancestral worship which militate (Brown, 1984). Two environmental factors important against the development of fisheries in these water in influencing aquatic assemblages and habitat bodies. Also the intensity of waterfalls and pressure structure are size and the flow regime (Schlosser, generated from it has given the impression of a 1987). lifeless zone. These reasons could be responsible for The resources of the length of the waterfalls are yet why data of Ichthyofuanal studies of water fall is to be tapped, more so due to the total neglect by scarce in Nigeria and other parts of Africa. stakeholders. This study on the ichthyofauna resources of Agbokim waterfalls serve to determine Knowledge of status of the ichthyofauna of waterfalls the rich resources of this biome and also reduce our is important in the development and management of over- dependence on estuarine and open water body conservation measures. The fundamental attributes of systems. an aquatic ecosystem are the number of species present and their abundance. Both attribute are Materials and methods dynamic and related (Tokeshi and Schmid, 2002). In aquatic ecosystems interaction between the Study area environment and population processes affects the distribution and abundance patterns of species The study area is Agbokim Waterfalls in South Eastern part of Nigeria (Figure 1). the tropical hinter-land type, with wet (May- November) and dry (December-April) seasons. Mean Figure 1:Map of Cross River State showing annual temperature ranged between 20 0C and 32 0C Agbokim Waterfalls. and annual total average rainfall, from 1450mm to 3015mm. The vegetation is the rainforest type with Agbokim Waterfalls is located in latitude 5 059’ North 0 Soil consisting of deep laterite and dark fertile, and longitude 8 45’ East. It is bounded in the West clayey and loamy soils. Agbokim Waterfalls is by the Cross River and in the North by the Cameroon drained by two small rivers, Ekue and Bakue, which high forests. The climate of Agbokim Waterfalls is are tributaries of the Cross River system. Of © AESS Publications, 2011 Page 300 Journal of Asian Scientific Research, 1(6), pp.299-311 2011 ecological importance are numerous small pools and Genus and species identifications was carried out swamps which are found along the length of the following Elvira (1987) for the Cyprinids; Erkakan et waterfalls. The high annual discharge and rainfall of al (2007) for the Bagrids, Teugels (1982) for the the Agbokim Waterfalls provide excellent buffers Clariidae; Fisher et al (1987) for the Clupeidae and against natural ecological stresses such as drought Mugilidae. Length distribution was analysed for three (Teugels et al 1992) which can lead to the loss of of the most abundant species: Tilapia zilli, African important fish taxa. The total length of the waterfalls catfish; Clarias gariepinus and Labeo coubie is 6817.73m. For the purpose of this study the waterfalls is divided into upstream, midstream and Species abundance and diversity downstream reaches. Upstream is close to cocoa farms with high forest cover along its shoreline and Species abundance of each reach was presented as a moderately fast water currents during the dry season numerical contribution by each species. This was and very fast water current during the wet season. determined by calculating the ratio each species Midstream has heavy water turbulence during the wet represented of the total catch for each reach based on season and moderate water turbulence during the dry the number of species and relative abundance. season with shoreline sparsely shaded with vegetation while downstream water current is low with an extensive wide area. The length upstream is Data treatment and analysis 2003.13m, midstream 807.42m and downstream 4007.18m. Mean width upstream, midstream and The mean and standard deviation of each of the downstream are 26.34±2.2m, 32.84m and physico-chemical parameters were calculated. 40.52±10.9m, respectively. Upstream mean height is Analysis of variance (ANOVA) was used to test for 31.87+3.4m while the depths upstream and statistical differences between the means of the downstream are dependent on variation of the volume physical and chemical parameters of the sampling of water from rainfall and water discharge. sites. To calculate mean abundance, numbers in different samples were summed for each species and Physico- chemical sampling averaged across all sampling sites. Physico-chemical parameters were correlated with the abundances of Physico-chemical parameters were determined once fish species using Pearson product moment every month for two years (August, 2007 to July, correlation coefficient analysis. Shannon-Wiener 2009). Standard methods for the examination of diversity function (H) was used to calculate water and waste water (APHA, 1987) were used for heterogeneity for each site. Richness index was all measurements. Monthly rainfall data for the study expressed using Margalef’s richness index. area was obtained from weather meteorological d = (S – 1) / logN (Clarke and Warwick 1994) stations, located in each of the three reaches. Habitat S variables; water level and river width were measured ∑ Pi Ln Pi on site. Water velocity (flow velocity) was H´ = - i = 1 (Krebs 1978) determined with Wagtech current flow meter, model E = d / S (Zar 1996). WFM001 with 125mm diameter impella. Water discharge was determined as in Fischer and Harris E = Equitability (2003) using the formula: WTD = CSA x WD x WV. 3 -1 d = Margalef’s richness index and H´ = Shannon- Where WTD = Water discharge (m s ), CSA = Cross Wiener Diversity Function Sectional Area (m); WD = Water dept (m) and WV = S = total species number Water velocity (ms -1).
Load more

Recommended publications
  • §4-71-6.5 LIST of CONDITIONALLY APPROVED ANIMALS November
    §4-71-6.5 LIST OF CONDITIONALLY APPROVED ANIMALS November 28, 2006 SCIENTIFIC NAME COMMON NAME INVERTEBRATES PHYLUM Annelida CLASS Oligochaeta ORDER Plesiopora FAMILY Tubificidae Tubifex (all species in genus) worm, tubifex PHYLUM Arthropoda CLASS Crustacea ORDER Anostraca FAMILY Artemiidae Artemia (all species in genus) shrimp, brine ORDER Cladocera FAMILY Daphnidae Daphnia (all species in genus) flea, water ORDER Decapoda FAMILY Atelecyclidae Erimacrus isenbeckii crab, horsehair FAMILY Cancridae Cancer antennarius crab, California rock Cancer anthonyi crab, yellowstone Cancer borealis crab, Jonah Cancer magister crab, dungeness Cancer productus crab, rock (red) FAMILY Geryonidae Geryon affinis crab, golden FAMILY Lithodidae Paralithodes camtschatica crab, Alaskan king FAMILY Majidae Chionocetes bairdi crab, snow Chionocetes opilio crab, snow 1 CONDITIONAL ANIMAL LIST §4-71-6.5 SCIENTIFIC NAME COMMON NAME Chionocetes tanneri crab, snow FAMILY Nephropidae Homarus (all species in genus) lobster, true FAMILY Palaemonidae Macrobrachium lar shrimp, freshwater Macrobrachium rosenbergi prawn, giant long-legged FAMILY Palinuridae Jasus (all species in genus) crayfish, saltwater; lobster Panulirus argus lobster, Atlantic spiny Panulirus longipes femoristriga crayfish, saltwater Panulirus pencillatus lobster, spiny FAMILY Portunidae Callinectes sapidus crab, blue Scylla serrata crab, Samoan; serrate, swimming FAMILY Raninidae Ranina ranina crab, spanner; red frog, Hawaiian CLASS Insecta ORDER Coleoptera FAMILY Tenebrionidae Tenebrio molitor mealworm,
    [Show full text]
  • 01 Astyanax Final Version.Indd
    Vertebrate Zoology 59 (1) 2009 31 31 – 40 © Museum für Tierkunde Dresden, ISSN 1864-5755, 29.05.2009 Osteology of the African annual killifi sh genus Callopanchax (Teleostei: Cyprinodontiformes: Nothobranchiidae) and phylogenetic implications WILSON J. E. M. COSTA Laboratório de Ictiologia Geral e Aplicada, Departamento de Zoologia, Universidade Federal do Rio de Janeiro, Caixa Postal 68049, CEP 21944-970, Rio de Janeiro, Brazil E-mail: wcosta(at)acd.ufrj.br Received on May 5, 2008, accepted on October 6, 2008. Published online at www.vertebrate-zoology.de on May 15, 2009. > Abstract Osteological structures of Callopanchax are fi rst described and illustrated. Twenty-six characters derived from comparisons of osseous structures among some aplocheiloid fi shes provided evidence supporting hypotheses of relationships among three western African genera (Callopanchax, Scriptaphyosemion and Archiaphyosemion), as proposed in recent molecular analysis. The clade comprising Callopanchax, Scriptaphyosemion and Archiaphyosemion is supported by a laterally displaced antero-proximal process of the fourth ceratobranchial. The sister group relationship between Callopanchax and Scriptaphyosemion is supported by a constriction on the posterior portion of the parasphenoid, an anterior expansion of the hyomandibula, a rectangular basihyal cartilage, an anterior pointed process on the fi rst vertebra, and a long ventrally directed hemal prezygapophysis on the preural centrum 2. Monophyly of Callopanchax is supported by a convexity on the dorsal margin of the opercle, a long interarcual cartilage, and long neural prezygapophyses on the anterior caudal vertebrae. > Key words Killifi shes, Callopanchax, Africa, Osteology, Annual fi shes. Introduction COSTA, 1998a, 2004) and among genera and species of the Rivulidae (e. g., COSTA, 1998b, 2005, 2006a, b).
    [Show full text]
  • Catalogue of Some Saltwater and Freshwater Fish Species of the Niger Delta Region of Nigeria
    Catalogue of Some Saltwater and Freshwater Fish Species of the Niger Delta Region of Nigeria Ekinadose Orose, Edafe Odioko and Okechukwu Kenneth Wokeh * Department of Animal and Environmental Biology, Hydrobiology and Fisheries Unit, University of Port Harcourt, PMB 5323, Port Harcourt, Rivers State, Nigeria. World Journal of Advanced Research and Reviews, 2021, 09(03), 056–084 Publication history: Received on 29 January 2021; revised on 27 February 2021; accepted on 01 March 2021 Article DOI: https://doi.org/10.30574/wjarr.2021.9.3.0075 Abstract The study was done to review some saltwater and freshwater fish species in the Niger Delta region of Nigeria. The Niger Delta is one of the most prominent regions in Nigeria, endowed with several water bodies that are distributed as freshwater like rivers, lakes, streams and creeks. These freshwater ecosystems in the region, are abundantly endowed with fish species such as Clarias gariepinus, Pila ovate, Labeo coubie, Synodontis budgetti and Synodontis eupterus. Apart from the freshwaters, the region also has vast marine ecosystem with abundance of fish species such as Elops lacerta, Mugil cephalus, Thais coronata, Periophthalmus papilio, Tympanotonus fuscatus, and Sardinella maderensis. Unfortunately, many of these fish species are endangered due to constant pollution in the Niger delta regional coastal environment. As a result, it is important to document some available freshwater and marine water fish species which will serve as a reference material for both academics and research institutions, should any of the fish species go into extinction. Keywords: Extinction, Coastal Waters, Marine Diversity, Niger Delta 1. Introduction Nigeria’s coastal waters fall within the Guinea Current Large Ecosystem (GCLME), a shared resource by all the coastal West African countries.
    [Show full text]
  • Genetic Diversity and Population Structure of the Critically Endangered Freshwater Fish Species, the Clanwilliam Sandfish (Labeo Seeberi)
    Genetic Diversity and Population Structure of the critically endangered freshwater fish species, the Clanwilliam sandfish (Labeo seeberi) By Shaun Francois Lesch Thesis presented in partial fulfilment of the requirements for the degree of Master of Science in the Faculty of Natural Science at Stellenbosch University Supervisor: Dr C. Rhode Co-supervisor: Dr R. Slabbert Department of Genetics December 2020 Stellenbosch University https://scholar.sun.ac.za Declaration: By submitting this thesis electronically, I declare that the entirety of the work contained therein is my own, original work, that I am the sole author thereof (save to the extent explicitly otherwise stated), that reproduction and publication thereof by Stellenbosch University will not infringe any third party rights and that I have not previously in its entirety or in part submitted it for obtaining any qualification. Date: December 2020 Copyright © 2020 Stellenbosch University All Rights Reserved i Stellenbosch University https://scholar.sun.ac.za Abstract: Labeo spp. are large freshwater fish found throughout southern Asia, the Middle East and Africa. The genus is characterised by specialised structures around the mouth and lips making it adapted to herbivorous feeding (algae and detritus). Clanwilliam sandfish (Labeo seeberi) was once widespread throughout its natural habitat (Olifants-Doring River system), but significant decreases in population size have seen them become absent in the Olifants River and retreat to the headwaters in the tributaries of the Doring River. Currently sandfish are confined to three populations namely the Oorlogskloof Nature Reserve (OKNR), Rietkuil (Riet) and Bos, with OKNR being the largest of the three and deemed the species sanctuary.
    [Show full text]
  • PAT Dec 2019
    PAT December, 2019; 15 (2): 38-48 ISSN: 0794-5213 Online copy available at www.patnsukjournal.net/currentissue Publication of Nasarawa State University, Keffi The Ornamental Fish Fauna Assemblage in the Upper Reaches of New Calabar River in Rivers State, Nigeria. Ibim, A. T*. and Gogo, O. O. Department of Fisheries, Faculty of Agriculture, University of Port Harcourt, Email: [email protected] Abstract A thirteen week investigation was conducted to document the ornamental fish assemblage of the upper reaches of New Calabar River, Rivers State. Four sample stations along the river’s course were selected. Landed fish species were collected from local fishers. Fish composition and abundance was estimated by standard methods. Results of composition revealed forty one (41) species belonging to thirty five (35) genera, in twenty five (25) families. Family composition revealed among the twenty five (25) ornamental families, the Cichlidae was most dominant with nine (9) species from five (5) genera. Species composition revealed Malapterurus electricus (Malapterurudae) as most dominant species. Species richness was highest at Station D (3.95), slightly lower in Stations B (2.91) and C (2.60), and least in Station A (1.84). Family relative abundance revealed Cichlidae (20.16%) as the most abundant family, followed by Malapterurudae (9.91%), Alestidae (8.81%), and few others. However, several families recorded low abundance, with Mastacemblidae the least (0.04%). Species abundance also, revealed Malapterurus electricus as most abundant (9.99%), followed by Erpetocheithys calabaricus (7.78%), Brycinus longipinnis (7.35%), before Tilapia zilli (7.22%), and Aethiomastacemblus nigromarginatus the least abundant (0.02%).
    [Show full text]
  • Three New Endemic Aphyosemion Species (Cyprinodontiformes: Nothobranchiidae) from the Massif Du Chaillu in the Upper Louessé River System, Republic of the Congo
    See discussions, stats, and author profiles for this publication at: https://www.researchgate.net/publication/321875026 Three new endemic Aphyosemion species (Cyprinodontiformes: Nothobranchiidae) from the Massif du Chaillu in the upper Louessé River system, Republic of the Congo Article in Zootaxa · January 2018 DOI: 10.11646/zootaxa.4369.1.3 CITATIONS READS 0 587 6 authors, including: Jouke van der Zee Gina Walsh Hogeschool Arnhem and Nijmegen Flora Fauna & Man Ecological Services Ltd. 18 PUBLICATIONS 29 CITATIONS 9 PUBLICATIONS 48 CITATIONS SEE PROFILE SEE PROFILE Valdie Nina Boukaka Mikembi Michiel Nell Jonker Institut National Recherche en Sciences Exactes et Naturelle Biotech Innovation Research Development & Consulting 5 PUBLICATIONS 0 CITATIONS 6 PUBLICATIONS 0 CITATIONS SEE PROFILE SEE PROFILE Some of the authors of this publication are also working on these related projects: Effects of microplastics and pharmaceuticals on trophic interactions View project Functional Ecology of Afrotropical Streams in the Republic of Congo, west-central Africa View project All content following this page was uploaded by Gina Walsh on 17 September 2018. The user has requested enhancement of the downloaded file. Zootaxa 4369 (1): 063–092 ISSN 1175-5326 (print edition) http://www.mapress.com/j/zt/ Article ZOOTAXA Copyright © 2018 Magnolia Press ISSN 1175-5334 (online edition) https://doi.org/10.11646/zootaxa.4369.1.3 http://zoobank.org/urn:lsid:zoobank.org:pub:946093ED-9309-4D85-A473-32566D631B19 Three new endemic Aphyosemion species (Cyprinodontiformes: Nothobranchiidae) from the Massif du Chaillu in the upper Louessé River system, Republic of the Congo JOUKE R. VAN DER ZEE1, GINA WALSH2,3,8, VALDIE N.
    [Show full text]
  • (Monogenea: Dactylogyridae) and a Redescription of D
    Journal of Helminthology (2018) 92, 228–243 doi:10.1017/S0022149X17000256 © Cambridge University Press 2017 Morphology and molecular characterization of Demidospermus spirophallus n. sp., D. prolixus n. sp. (Monogenea: Dactylogyridae) and a redescription of D. anus in siluriform catfish from Brazil L. Franceschini1*, A.C. Zago1, M.I. Müller1, C.J. Francisco1, R.M. Takemoto2 and R.J. da Silva1 1São Paulo State University (Unesp), Institute of Biosciences, Botucatu, Brazil, CEP 18618-689: 2State University of Maringá (UEM), Limnology, Ichthyology and Aquaculture Research Center (Nupélia), Maringá, Brazil, CEP 87020-900 (Received 29 September 2016; Accepted 26 February 2017; First published online 6 April 2017) Abstract The present study describes Demidospermus spirophallus n. sp. and Demidosper- mus prolixus n. sp. (Monogenea, Dactylogyridae) from the siluriform catfish Loricaria prolixa Isbrücker & Nijssen, 1978 (Siluriformes, Loricariidae) from the state of São Paulo, Brazil, supported by morphological and molecular data. In add- ition, notes on the circumscription of the genus with a redescription of Demisdospermus anus are presented. Demidospermus spirophallus n. sp. differed from other congeners mainly because of the morphology of the male copulatory organ (MCO), which exhibited 2½ counterclockwise rings, a tubular accessory piece with one bifurcated end and a weakly sclerotized vagina with sinistral open- ing. Demidospermus prolixus n. sp. presents a counterclockwise-coiled MCO with 1½ rings, an ovate base, a non-articulated groove-like accessory piece serving as an MCO guide, two different hook shapes, inconspicuous tegumental annulations, a non-sclerotized vagina with sinistral opening and the absence of eyes or acces- sory eyespots. The present study provides, for the first time, molecular character- ization data using the partial ribosomal gene (28S) of two new species of Demidospermus from Brazil (D.
    [Show full text]
  • Body Composition, Elemental Concentration and Morphometrics of Two Carnivorous Fishes in Rivers of Southern Punjab, Pakistan
    Body Composition, Elemental Concentration and Morphometrics of two Carnivorous fishes in Rivers of Southern Punjab, Pakistan. A thesis submitted in partial fulfillment of the requirements For the degree of Doctor of Philosophy in ZOOLOGY By Muhammad Yousaf (M. Sc. Zoology) Institute of Pure & Applied Biology (Zoology Division) Bahauddin Zakariya University, Multan “It Is He Who Has Made The Sea Subject, That Ye May Eat Thereof Flesh That Is Fresh And Tender. And That Ye May Extract There From Ornaments To Wear.” (26: 14) – THE HOLY QURAN STATEMENT AND DECLARATION The work submitted in this thesis under the title, “Body Composition, Elemental Concentration and Morphometrics of two Carnivorous fishes in River of Southern Punjab, Pakistan” is in fulfillment of the requirements for the degree of Doctor of Philosophy. I declare that this work is the result of my own investigations and has not already been accepted in substance for any degree, nor is it currently being submitted for any other degree. All authors works referred to in this thesis have been fully acknowledged. MUHAMMAD YOUSAF Dated ………………….... I certify that above statement is correct. Supervisor…………………...................... Prof. (R) Dr. Abdus Salam DEDICATED TO My Worthy Parents & All those who bring joy to my life I ACKNOWLEDGEMENTS I bow my head before ALMIGHTY ALLAH, the most merciful and the most beneficent who bestowed me with the ability to complete this work and the Holy Prophet Hazrat Muhammad (PBUH) who inspired me for the truth. I deem it an utmost pleasure to be able to express the heartiest gratitude and deep sense of devotion to my worthy supervisor Prof.
    [Show full text]
  • Introduction to Fisheries Management
    LECTURE NNOTE ON FIS 201 (2Units) INTRODUCTION TO FISHERIES MANAGEMENT PREPARED BY DR (MRS) IKENWEIWE N. BOLATITO AQUACULTURE AND FISHERIES DEPARTMENT UNIVERSITY OF AGRICULTURE,ABEOKUTA 1 INTRODUCTION ICTHYOLOGY is the scientific study of fish. Fish, because of the possession of notochord belong to the phylum chordata. They are most numerous vertebrates. About 20,000 species are known to science, and compare to other classes, aves 98,600species and mammals 8600species, reptiles 6,000 spandamphibians 2,000species.Fish also in various shape and forms from the smallest niamoy17mmT.L the giant whale shark that measures 15m and heights 25 tonnes. Fish are poikilothermic cold blooded animals that live in aquatic environment Most fish , especially the recent species, have scales on their body and survive in aquatic environment by the use of gills for respiration. Another major characteristic of a typical fish is the presence of gill slits which cover the gills on the posterior. (1) FISH TAXONOMY. Everyone is at heart a taxonomist whether by virtue or necessity or because of mere curiosity. 1. To know/identify the difference component in a fish population. That is to name and arrange. 2. To study the population dynamics in a population. (Number of each species in a population.) 3. Important in fish culture propagation – to know the species of fish that is most suitable for culture. 4. To exchange information to people in other parts of the world living known that both are dealing on the same species. 5. Reduce confusion as same Latin word generally acceptable worldwide are used while vernacular names differ form one location to another.
    [Show full text]
  • Nutritional Composition of Synodontis Nigrita and Tilapia Mariae from the Jamieson River, Sapele, Delta State, Nigeria
    BIOLOGIJA. 2019. Vol. 65. No. 2. P. 116–121 © Lietuvos mokslų akademija, 2019 Nutritional composition of Synodontis nigrita and Tilapia mariae from the Jamieson River, Sapele, Delta State, Nigeria Ijeoma Patience Oboh*, The proximate composition of fish is important for easy formu- lation of both animal and human diets. The study on the proxi- Oluwatosin Adesola Sanni, mate and mineral composition of captured Synodontis nigrita and Tilapia mariae was aimed at gaining knowledge of their con- Nkonyeasua Kingsley Egun sumption-associated benefits. Fish specimens were purchased on the bank of the river between February and April 2017 and Department of Animal transported to the laboratory where routine measurements, body and Environmental Biology, University of Benin, and biochemical analysis for moisture content, fat, ash, protein, P.M.B. 1154 Ugbowo, crude fibre, carbohydrate, sodium, potassium, calcium, and mag- Benin City, Edo State, Nigeria nesium were performed using the standard methods of AOAC. The result of the proximate composition ofSynodontis nigrita and Tilapia mariae showed moisture content of 79.00% and 78.87%, fat value of 3.43% and 0.67%, ash content of 6.22% and 6.68%, protein value of 7.09% and 8.84%, crude fibre value of 0.40% and 1.80%, carbohydrate content of 3.86% and 3.14%, respectively. The mineral composition of Synodontis nigrita and Tilapia mariae revealed sodium values of 32.90 mg/kg and 30.20 mg/kg, potas- sium values of 171.70 mg/kg and 175.60 mg/kg, calcium values of 13.50 mg/kg and 9.20 mg/kg, magnesium content of 15.00 mg/kg and 13.40 mg/kg, respectively.
    [Show full text]
  • Karyotypic Analysis of Labeo Coubie (Ruppell, 1832) (African Carp) from University of Ilorin Dam , Ilorin, Nigeria
    Animal Research International (2017) 14(2): 2710 – 2714 271 0 KARYOTYPIC ANALYSIS OF LABEO COUBIE (RUPPELL, 1832) (AFRICAN CARP) FROM UNIVERSITY OF ILORIN DAM , ILORIN, NIGERIA ADEMOLA, Olaoluwa John, OGUNBANJO, Oludayo Obafunke, OLAFIMIHAN, Temitope Fatima and NZEH, Gladys Chioma Department of Zoology, University of Ilorin, Ilorin, kwara State, Nigeria. Corresponding Author: Ademola, O. J. Department of Zoology, University of Ilorin, Ilorin, Nigeria. Email: [email protected] Phone: +234 7035598657 ABSTRACT Karyotypic information i s a useful endpoint in environmental monitoring and breeding programme . Data on karyotype of Labeo coubie i s needful for environmental assessment and genetic improvement breeding projects . This study was aimed at determining the k ar yotype of L . coubie. 10 specimens were obtained from th e University of Ilorin dam , Ilorin, Nigeria . Each specimen received intraperitoneally 0.02% colchicine (1ml/100g body weight) and left for 4 hours before sacrificing. Chromosome preparation was made from the kidney and liver . A total of 200 metaphase spreads were scored. The diploid chromosome numbers ranged from 2n = 44 to 2n = 50. T he modal diploid number was found to be 2n = 50 and this represents 56 %. The kidney tissue gave better chromosome pre paration. The s e result s contribut e to the karyotypic data on L. coubie . Keywords: Labeo coubie , Karyotype, Chromosome INTRODUCTION conservation strategies are needed to ensure sustainable yields. Pertinent to this is karyoty pe L abeo coubie is one of the common species of analysis of Nigerian fishes. Cytogenetic data on fishes of the family Cyprinidae found in Nigeria, fishes from Nigerian waters is very lacking.
    [Show full text]
  • Prevalence, Intensity and Pathological Lesions Associated with Helminth
    PREVALENCE, INTENSITY AND PATHOLOGICAL LESIONS ASSOCIATED WITH HELMINTH INFECTIONS IN FARMED / / AND WILD FISH IN UPPER TANA RIVER BASIN, KENYA CHARLES GICHOHlt MATHENGE (BVM, UON) A THESIS SUBMITTED TO THE UNIVERSITY OF NAIROBI IN PARTIAL FULFILLMENT FOR THE DEGREE OF MASTER OF SCIENCE IN FISH SCIENCE University of NAIROBI Library 0416939 7 DEPARTMENT OF VETERINARY PATHOLOGY, MICROBIOLOGY AND PARASITOLOGY FACULTY OF VETERINARY MEDICINE UNIVERSITY OF NAIROBI 2010 11 DECLARATION This thesis is my original work and has not been presented for a degree in any other University. Signed ............ date: \ Charles Gichohi Mathenge This thesis has been submitted for examination with our approval as University Supervisors: Signed:........................................................ date: A P i 0 Dr. Mbuthia, P. G. (BVM, MSc, Dip. Path., PhD) date:...... Dr. Waruiru, R. M. (BVM, MSc, PhD) Signed: ...'. 7 ......... date:. /. 9 .... Prof. Ngatia, T. A. (BVM, MSc, Dip. PVM, PhD) Ill DEDICATION This work is dedicated to my mother Rachael Waruguru and my late father, Moses Wanjuki Mathenge. IV ACKNOWLEDGEMENTS I would like to express my sincere and deep gratitude to my supervisors Dr. Mbuthia P.G., Dr. Waruiru R.M. and Professor Ngatia T.A., for their invaluable advice, suggestions, guidance, moral support and encouragement throughout the study period. I am highly indebted to the Director, Department of Veterinary Services, Ministry of Livestock and Fisheries Development, for allowing me to go on study leave and the award of a scholarship to undertake this MSc programme. I also wish to acknowledge the Chairman, Department of Veterinary Pathology, Microbiology and Parasitology, Prof. Maingi E. N. for invaluable advice and facilitating the preliminary market study.
    [Show full text]