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Growth and Reproductive Parameters of Polypterus Senegalus Cuvier 1829 in Eleiyele Lake
New York Science Journal 2016;9(11) http://www.sciencepub.net/newyork Growth and reproductive parameters of Polypterus senegalus Cuvier 1829 in Eleiyele Lake Adedolapo Abeke Ayoade and Juliet Avwesuruo Akponine Department of Zoology, University of Ibadan, Oyo State, Nigeria. *Corresponding author E-mail: [email protected] Phone Number: +234-8033855807 Abstract: The Senegal bichir, Polypterus senegalus Cuvier 1829 is of commercial importance as food and ornamental fish. This study describes the growth pattern and aspects of reproductive biology for the species in the Eleyele Lake, Nigeria. One hundred and twenty nine specimens were collected from October, 2010 to April, 2011. For each individual, the total length, standard length and body weight were measured also aspects of reproductive biology (gonadosomatic index, fecundity, egg diameter) were determined. All the LWRs showed strong correlations (r> 0.75, p>0.05). The b value obtained varies with body size and higher value was recorded for the smaller size group. The mean K for the combined sexes was 0.536 0.007. Absolute fecundity ranged between 622 (for specimen with TL = 16.4 cm; total weight = 21.61 g) and 2593 eggs (for specimen with TL = 27.7 cm; total weight = 120.62 g). The frequency polygons of the egg diameter suggest the species is a multiple spawner. [Adedolapo Abeke Ayoade and Juliet Avwesuruo Akponine. Growth and reproductive parameters of Polypterus senegalus Cuvier 1829 in Eleiyele Lake. N Y Sci J 2016;9(11):27-31]. ISSN 1554-0200 (print); ISSN 2375-723X (online). http://www.sciencepub.net/newyork. 5. doi:10.7537/marsnys091116.05. -
Length-Weight Relationships for 36 Freshwater Fish Species from Two Tropical Reservoirs: Ayamé I and Buyo, Côte D’Ivoire
Length-weight relationships for 36 freshwater fish species from two tropical reservoirs: Ayamé I and Buyo, Côte d’Ivoire Leonard Tah1*, Gouli, Goore Bi2 & Kouassi Sebastino Da Costa3 1. Centre de Recherches Océanologiques (CRO) B P V 18 Abidjan Côte d’Ivoire; [email protected] 2. Laboratoire d’Hydrobiologie, UFR-Biosciences, Université de Cocody-Abidjan, 22 BP 582 Abidjan 22, Côte d’Ivoire; [email protected] 3. Centre National de Recherche Agronomique (CNRA); Programme Elevage, Pêche et Aquaculture Continentales (PEPAC), 08 BP 33 Abidjan 08, Côte d’Ivoire; [email protected] * Corresponding author Received 18-VII-2011. Corrected 14-IV-2012. Accepted 16-V-2012. Abstract: Nowadays, the successful management of small scale fisheries requires the use of biometric data collected in the field, in order to transform them into suitable indicators. The present study describes the length- weight relationships for 36 freshwater fish species from two tropical reservoirs Ayame I and Buyo, in Côte d’Ivoire. The main objective of the study was to provide a length weight key for a wide range of freshwater fish species from these tropical reservoirs exploited by the inland fisheries. The samplings were carried out at Buyo from July 1997 to August 1998, and from August 2004 to July 2005 in Ayame I. Fish specimens were collected from catches of artisanal fisheries using gill-nets, cast-nets, beach seines and bamboo traps. After landings, samples were identified, total weight for each specimen was recorded to the nearest gram and standard length was measured to the nearest millimetre. A total of 12 724 individuals belonging to 15 families and 24 genera were obtained in this study. -
Assessment of Critical Coastal Habitats of the Western Region, Ghana
Assessment of Critical Coastal Habitats of the Western Region, Ghana July, 2011 THE UNIVERSITY of Rhode Island Coastal GRADUATE SCHOOL Resources OF OCEANOGRAPHY Center This publication is available electronically on the Coastal Resources Center’s website at http://www.crc.uri.edu For additional information on partner activities: WorldFish: http://www.worldfishcenter.org Friends of the Nation: http://www.fonghana.org Hen Mpoano: http://www.henmpoano.org Sustainametrix: http://www.sustainametrix.com For more information on the Integrated Coastal and Fisheries Governance project, contact: Coastal Resources Center, University of Rhode Island, Narragansett Bay Campus, 220 South Ferry Road, Narragansett, Rhode Island 02882, USA. Brian Crawford, Director International Programs at [email protected]; Tel: 401-874-6224; Fax: 401-874-6920. Citation: Coastal Resources Center and Friends of the Nation. (2011). Assessment of Critical Coastal Habitats of the Western Region, Ghana. Integrated Coastal and Fisheries Governance Initiative for the Western Region of Ghana. Narragansett, RI: Coastal Resources Center, Graduate School of Oceanography, University of Rhode Island. 132 pp.. Disclaimer: This publication is made possible by the generous support of the American people through the United States Agency for International Development (USAID)/Ghana. The contents of this report are the responsibility of the Integrated Coastal and Fisheries Governance (ICFG) Program and do not necessarily reflect the views of the United States Government. Associate Cooperative Agreement No. 641-A-00-09-00036-00 for “Integrated Coastal and Fisheries Governance (ICFG) Program for the Western Region of Ghana,” under the Leader with Associates Award No. EPP-A-00-04-00014-00. Cover Photo: Ankrobra town, at high tide. -
Title the Mitochondrial Phylogeny of an Ancient Lineage of Ray- Finned Fishes (Polypteridae) with Implications for the Evolution
The mitochondrial phylogeny of an ancient lineage of ray- finned fishes (Polypteridae) with implications for the evolution Title of body elongation, pelvic fin loss, and craniofacial morphology in Osteichthyes. Author(s) Suzuki, Dai; Brandley, Matthew C; Tokita, Masayoshi Citation BMC evolutionary biology (2010), 10(1) Issue Date 2010 URL http://hdl.handle.net/2433/108263 c 2010 Suzuki et al; licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Right Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Type Journal Article Textversion publisher Kyoto University Suzuki et al. BMC Evolutionary Biology 2010, 10:21 http://www.biomedcentral.com/1471-2148/10/21 RESEARCH ARTICLE Open Access The mitochondrial phylogeny of an ancient lineage of ray-finned fishes (Polypteridae) with implications for the evolution of body elongation, pelvic fin loss, and craniofacial morphology in Osteichthyes Dai Suzuki1, Matthew C Brandley2, Masayoshi Tokita1,3* Abstract Background: The family Polypteridae, commonly known as “bichirs”, is a lineage that diverged early in the evolutionary history of Actinopterygii (ray-finned fish), but has been the subject of far less evolutionary study than other members of that clade. Uncovering patterns of morphological change within Polypteridae provides an important opportunity to evaluate if the mechanisms underlying morphological evolution are shared among actinoptyerygians, and in fact, perhaps the entire osteichthyan (bony fish and tetrapods) tree of life. However, the greatest impediment to elucidating these patterns is the lack of a well-resolved, highly-supported phylogenetic tree of Polypteridae. -
Preumnary Studes on Food and Feedng Habts Ofpolypterus Nducherand Polypterus Senegaws N• Lake Chad
Preliminary studies on food and feeding habits of Polypterus endlicheri and Polypterus senegalus in Lake Chad Item Type conference_item Authors Raji, Aminu; Saidu, Armed K.; Maryam, Ahmed T. Download date 02/10/2021 19:40:14 Link to Item http://hdl.handle.net/1834/19123 PREUMNARY STUDES ON FOOD AND FEEDNG HABTS OFPOLYPTERUS NDUCHERAND POLYPTERUS SENEGAWS N• LAKE CHAD BY AMINU RAJI; ARMED K SAIDU; AHMEI) T. MARYAM. FEDERAL COLLEGE OF FRESHWATER FISHERIES TECHNOLOGY BAGA ABSTRACT The food and feeding habits of Polyprerus cncllicherj and Polypterus senegalus was carried out in the months of September to October. The food of 33 Polypierus endlicheri as observed include Tilapia species (89.3%), Eutropius niloticus (28.6%), Mayfly nymph (39.3%), Dragon fly larva (56.6%) fish remains (21.4%) and detritus (7.1%). The food of27 Polypterus senegalus as observed include Tilapia sp (88.4%), Eutropius niloticus (27.9%), may fly nymph (23.3%), Dragonfly nymph (34.9%) remains (21.1%) detritus (23.3%). The percentage occurrence of food item found in the stomach of Polypterus endlieheri is 93.3% while that of Polyprerus senegalus is 67.4%. The dominance of Tilapia sp was establish in the study, and there is no significant difference between the feeding habit of Polypterus endlicheri and Polyprerus senegalus. INTRODUCTION Much of our current understanding of the relationship between fish and its environment but autecology's production and ecological role of fish also to provide answers to the practical problems, populations is derived from studies of the diet based which arise in relation to human exploitation. on analysis of stomach contents. -
Sixth International Conference of the Pan African Fish and Fisheries
SIXTH INTERNATIONAL CONFERENCE OF THE PAN AFRICAN FISH AND FISHERIES ASSOCIATION (PAFFA6) BOOK OF ABSTRACTS Sun N Sand Holiday Resort in Mangochi, Malawi 24th to 28th September 2018. “African Fish and Fisheries: Diversity, Conservation and Sustainable Management” About This Booklet This publication includes abstracts for oral presentations and poster presentations at the Sixth International Conference of The Pan African Fish And Fisheries Association (PAFFA6) held at Sun ‘n’ Sand Holiday Resort in Mangochi, Malawi from 24-28 September, 2018. Section One: Oral Presentations Oral presentations are grouped by conference theme. Please refer to the Conference Programme for details about date, time slot and location for each thematic session. Section Two: Poster Presentations Poster presentations are grouped by conference theme. Please refer to the Conference Programme for details about date, time slot, and location for group poster sessions. All presentations are subject to change after the printing of this publication. The 2018 PAFFA book of abstracts is sponsored by the Fisheries Integration of Society and Habitats Project (FISH) which is made possible by the generous support of the American people through the United States Agency for International Development (USAID) and implemented by Pact. "The contents, are the sole responsibility of LUANAR, Conference Organisers and Delegates and do not necessarily reflect the views of the FISH Project team and partners, USAID, or the United States Government (USG). 1 | P a g e “African Fish and Fisheries: Diversity, Conservation and Sustainable Management” KEY NOTE PRESENTATIONS – PLENARY SESSIONS (NYANJA HALL) Day 1, Monday, 24th September, 2018 Rapid Radiation of the Cichlids of Lake Malaŵi Jay R. -
A Strategic Approach to the Management of Ornamental Fish in Australia Communication Strategy and Grey List Review - a REPORT to OFMIG
A strAtegic ApproAch to the management of ornamental fish in australia communicAtion strAtegy And grey list review - A report TO oFmig A strategic approach to the management of ornamental fish in Australia Communication strategy and grey list review – a report to OFMIG Andy Moore, Nicholas Marton and Alex McNee March 2010 © Commonwealth of Australia 2010 This work is copyright. Apart from any use as permitted under the Copyright Act 1968, no part may be reproduced by any process without prior written permission from the Commonwealth. Requests and inquiries concerning reproduction and rights should be addressed to the Commonwealth Copyright Administration, Attorney General’s Department, Robert Garran Offices, National Circuit, Barton ACT 2600 or posted at http://www.ag.gov.au/cca. The Australian Government acting through the Bureau of Rural Sciences has exercised due care and skill in the preparation and compilation of the information and data set out in this publication. Notwithstanding, the Bureau of Rural Sciences, its employees and advisers disclaim all liability, including liability for negligence, for any loss, damage, injury, expense or cost incurred by any person as a result of accessing, using or relying upon any of the information or data set out in this publication to the maximum extent permitted by law. Postal address: Bureau of Rural Sciences GPO Box 858 Canberra, ACT 2601 Copies available from: www.brs.gov.au ISBN: 1-921192-37-2 ii Acknowledgements This report was made possible through financial support from the Ornamental Fish Management Implementation Group (OFMIG) which is funded by state, teritory and federal government agencies. -
4. Lake Volta, Ghana
85 4. Lake Volta, Ghana Courtesy: CSIR Water Research Institute, Ghana. 4.1 INTRODUCTION TO THE LAKE VOLTA REVIEW The completion of the Akosombo Dam on the Volta River in 1964 resulted in the creation of an immense reservoir (Lake Volta) with a length of 520 km and covering about 8 500 km2, or 3.2 percent of Ghana’s total land area (Figure 46). The reservoir stores about 149 billion m3 (149 km3) of water. Although Lake Volta itself lies entirely in Ghana, the Volta River system is shared by six West African countries: Benin, Burkina Faso, Côte d’Ivoire, Ghana, Mali and Togo. The main aim of constructing the dam was to produce electricity, but the reservoir’s fisheries were soon recognized to be of significant socio-economic importance to Ghana. A large fishery developed, upon which some 300 000 fisherfolk depend for their livelihood (Braimah, 2003). According to FAO statistics, inland capture fisheries contributed 27 percent of total Ghanaian fish production in 2009 (FAO FishStat Plus). It is estimated that the reservoir provides 90 percent of national freshwater fish production (Abban, 1999). The reservoir also facilitates the transportation of goods and passengers and the provision of services, linking different parts of the country. Because of the important contributions of the fishery to socio-economic development in Ghana, the Government of Ghana has undertaken efforts to sustain and enhance fish production from Lake Volta. Notable among these were the establishment of Volta Lake Research and Development Project in the 1960s and its related research projects through the 1960s, 1970s and 1980s, followed by the institution of the United Nations Development Programme (UNDP) project Integrated Development of Artisanal Fisheries (IDAF) from about 1989 to the late 1990s. -
2003. Fish Biodiversity: Local Studies As Basis for Global Inferences
Fish Biodiversity: Local Studies as Basis for Global Inferences. M.L.D. Palomares, B. Samb, T. Diouf, J.M. Vakily and D. Pauly (Eds.) ACP – EU Fisheries Research Report NO. 14 ACP-EU Fisheries Research Initiative Fish Biodiversity: Local Studies as Basis for Global Inferences Edited by Maria Lourdes D. Palomares Fisheries Centre, University of British Columbia, Vancouver, Canada Birane Samb Centre de Recherches Océanographiques de Dakar-Thiaroye, Sénégal Taïb Diouf Centre de Recherches Océanographiques de Dakar-Thiaroye, Sénégal Jan Michael Vakily Joint Research Center, Ispra, Italy and Daniel Pauly Fisheries Centre, University of British Columbia, Vancouver, Canada Brussels December 2003 ACP-EU Fisheries Research Report (14) – Page 2 Fish Biodiversity: Local Studies as Basis for Global Inferences. M.L.D. Palomares, B. Samb, T. Diouf, J.M. Vakily and D. Pauly (eds.) The designations employed and the presentation of material in this publication do not imply the expression of any opinion whatsoever on the part of the European Commission concerning the legal status of any country, territory, city or area or of its authorities, or concerning the delimitation of frontiers or boundaries. Copyright belongs to the European Commission. Nevertheless, permission is hereby granted for reproduction in whole or part for educational, scientific or development related purposes, except those involving commercial sale on any medium whatsoever, provided that (1) full citation of the source is given and (2) notification is given in writing to the European Commission, Directorate General for Research, INCO-Programme, 8 Square de Meeûs, B-1049 Brussels, Belgium. Copies are available free of charge upon request from the Information Desks of the Directorate General for Development, 200 rue de la Loi, B-1049 Brussels, Belgium, and of the INCO-Programme of the Directorate General for Research, 8 Square de Meeûs, B-1049 Brussels, Belgium, E-mail: [email protected]. -
'Whedo'‐Aquaculture‐System in Malanville (North of Benin)
Description and Improvement of the ‘Whedo’‐Aquaculture‐System in Malanville (North of Benin) DISSERTATION ZUR ERLANGUNG DES NATURWISSENSCHAFTLICHEN DOKTORGRADES DER BAYERISCHEN JULIUS‐MAXIMILIANS‐UNIVERSTITÄT WÜRZBURG VORGELEGT VON MELANIE E. HAUBER GEBOREN IN SINGEN AM HOHENTWIEL WÜRZBURG May 2011 Eingereicht am: Mitglieder der Prüfungskommission: Vorsitzender: Prof. Dr. Th. Dandekar 1. Gutachter: Prof. Dr. K. Eduard Linsenmair 2. Gutachter: Prof. Dr. J. Tautz Tag des Promotionskolloquiums: Doktorurkunde ausgehändigt am: Gewässer, ihr seid diejenigen, die uns Lebenskraft geben. Helft uns Nahrung zu finden, so dass wir andere mit großer Freude betrachten können. (Rama Kishan Sharma) TABLE OF CONTENTS LIST OF FIGURES 9 LIST OF TABLES 12 LIST OF ABBREVIATIONS 15 CHAPTER I GENERAL INTRODUCTION AND STUDY SITE 1. THE PRESENT STATE OF THE WORLD FISHERY 18 2. THE IMPORTANCE OF FISH AS PROTEIN SOURCE, ESPECIALLY IN AFRICA 19 3. FISHERY – IMPORTANCE TO THE POPULATION AND THREATS TO ITS SUSTAINABILITY 22 4. AQUACULTURE 24 4.1 DEFINITION 25 4.2 HISTORY OF AQUACULTURE 25 4.3 AQUACULTURE – HOPE OR THREAT TO NATURAL RESOURCES? 26 4.4 WHAT KIND OF AQUACULTURE IS APPROPRIATE FOR SUB‐SAHARAN AFRICA? 28 4.5 IMPORTANCE OF SMALL‐SCALE FISH FARMING 29 5. CURRENT INFORMATION ON THE STUDY SITE 31 5.1 BENIN 31 5.2 MALANVILLE 32 6. PERSPECTIVES AND OUTLINE OF THE THESIS 34 7. REFERENCES 37 CHAPTER II ECOLOGY OF THE WHEDOAQUACULTURESYSTEM 1. INTRODUCTION 42 1.1 NOTES ON THE STUDY AREA AND THE RIVERS NIGER AND SOTA 42 1.1.1 CLIMATE 42 1.1.2 HYDROLOGY 43 1.1.3 LAND USE 44 2. -
By Kathryn E. Mickle
UNRAVELING THE SYSTEMATICS OF PALAEONISCOID FISHES—LOWER ACTINOPTERYGIANS IN NEED OF A COMPLETE PHYLOGENETIC REVISION by Kathryn E. Mickle Submitted to the Department of Ecology and Evolutionary Biology and the Faculty of the Graduate School of the University of Kansas in partial fufillment of the requirements for the degree of Doctor of Philosophy ___________________________________________ Hans-Peter Schultze, Co-Chair ___________________________________________ Edward O. Wiley, Co-Chair ___________________________________________ Linda Trueb ___________________________________________ Sharon Billings ___________________________________________ Bruce Lieberman Date Defended: April 10, 2012 The Dissertation Committee for Kathryn E. Mickle certifies that this is the approved version of the following Dissertation: UNRAVELING THE SYSTEMATICS OF PALAEONISCOID FISHES—LOWER ACTINOPTERYGIANS IN NEED OF A COMPLETE PHYLOGENETIC REVISION Committee: ___________________________________________ Hans-Peter Schultze, Co-Chair ___________________________________________ Edward O. Wiley, Co-Chair ___________________________________________ Linda Trueb ___________________________________________ Sharon Billings ___________________________________________ Bruce Lieberman Date Approved: April 10, 2012 ii ABSTRACT Actinopterygian fishes are the most diverse and speciose vertebrates on the planet. Lower actinopterygians, or fishes basal to teleosts, are critical to our understanding of the early evolution of this group, but extant lower actinopterygians are -
New Records of Fish Species in the River Niger at Malanville (North
Bulletin of Fish Biology Volume 12 Nos. 1/2 31.12.2010 79-82 Short note/Kurze Mitteilung New records of fi sh species in the River Niger at Malanville (North-East Benin) Neue Belege verschiedener Fischarten im Niger bei Malanville (Nordost-Benin) Melanie E. Hauber1, David Bierbach1,2 & Karl Eduard Linsenmair1 1Department of Tropical Biology and Animal Ecology , J. Maximilians-University Würzburg, Am Hub- land, D-97074, Würzburg, Germany; [email protected] 2Department of Ecology and Evolution, J.W. Goethe-University Frankfurt, Siesmayerstrasse 70–72; D-60054 Frankfurt am Main, Germany Zusammenfassung: Die Flüsse Niger (sowie einer einer Seitenarme) und Sota in der Kommune Malan ville (Nordost Benin) wurden von Juni bis September 2008 befi scht. Für Polypterus endlicheri endlicheri,Neolebias uni- fasciatus und Nannocharax ansorgii konnten Verbreitungslücken geschlossen werden. Zudem wurden erstmals in diesen Flüssen Barbus bawkuensis und Synodontis macrophthalmus nachgewiesen. Exemplare von Brycinus leuciscus wiesen eine deutliche Rotfärbung der Fettfl osse auf. Es ist unklar, ob es sich hierbei um eine lokale Farbvariante oder eine neue Unterart/Art handelt. The study concentrated on the middle Niger as setting gill nets (30-40 m x 0.5-1.5 m; MS 25- at Malanville (North-East-Benin), 1130 km 50 mm) overnight. Each habitat was sampled upstream of the estuary, respectively 3050 km not less than four times. Water chemistry was downstream from the sources of the Niger measured simultaneously by analysing water (MORITZ et al. 2006), on one of its branches taken at a depth of 20 cm from the surface and the river Sota, a tributary with a length of between 7.30 h and 12.00 h.