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The Eastern Pacific Species of B a T H Y G O B I U S ( P E Rciformes
Rev. Biol. Trop. 49 Supl. 1: 141-156, 2001 The Eastern Pacific species of Ba t h y g o b i u s (P e r ciformes : Gobiidae) Peter J. Miller & Sergio Stefanni School of Biological Sciences, The University, Bristol, BS8 1UG, UK. [fax +44 (0) 117 925 7374; e-mail: [email protected]] Received: 17-III-2000 Corrected: 23-XI-2000 Accepted: 8-XII-2000 Abstract: The circumtropical gobiid genus Bathygobius Bleeker is defined and three Eastern Pacific species are redescribed, with first dorsal fin pattern and postorbital blotches being shown to be additional characters of diagnostic value. Two mainland species are recognised, the Mexican-Panamanian B. ramosus Ginsburg 1947 and the Panamanian B. andrei (Sauvage 1880). B. ramosus is now reported from Clarión Island, Revillagigedos, and also from Cocos Island. Meristic variation of ramosus is tabulated for local populations and PCAanalysis of their morphometry suggests regional differentiation in this species, with Tres Marias and Revillagigedos populations clustering away from mainland and Mon- tuosa material. An insular species, B. lineatus (Jenyns 1842) from the Galapagos is defined, with B. arundelii (Garman 1899) from Clipperton Island and B. l. lupinus Ginsburg 1947 from Lobos de Afuera, off Peru, placed as nominal sub- species of lineatus. This species resembles the Indo-west Pacific B. fuscus and Atlantic basin B. soporator more closely than it does ramosus and andrei and may be the product of transpacific dispersal. A similar origin for B. ramosus is dis- cussed but it seems more likely that both B. ramosus and B. andrei have Caribbean sister species. -
Evolutionary Genomics of a Plastic Life History Trait: Galaxias Maculatus Amphidromous and Resident Populations
EVOLUTIONARY GENOMICS OF A PLASTIC LIFE HISTORY TRAIT: GALAXIAS MACULATUS AMPHIDROMOUS AND RESIDENT POPULATIONS by María Lisette Delgado Aquije Submitted in partial fulfilment of the requirements for the degree of Doctor of Philosophy at Dalhousie University Halifax, Nova Scotia August 2021 Dalhousie University is located in Mi'kma'ki, the ancestral and unceded territory of the Mi'kmaq. We are all Treaty people. © Copyright by María Lisette Delgado Aquije, 2021 I dedicate this work to my parents, María and José, my brothers JR and Eduardo for their unconditional love and support and for always encouraging me to pursue my dreams, and to my grandparents Victoria, Estela, Jesús, and Pepe whose example of perseverance and hard work allowed me to reach this point. ii TABLE OF CONTENTS LIST OF TABLES ............................................................................................................ vii LIST OF FIGURES ........................................................................................................... ix ABSTRACT ...................................................................................................................... xii LIST OF ABBREVIATION USED ................................................................................ xiii ACKNOWLEDGMENTS ................................................................................................ xv CHAPTER 1. INTRODUCTION ....................................................................................... 1 1.1 Galaxias maculatus .................................................................................................. -
110 Biological Characteristics of the Schlegel's Goby, Porogobius
FAO REGIONALFAO RegionalOFFICE OfficeFOR for AFRICAAfrica Biological characteristics of the Schlegel’s goby, Porogobius schlegelii, in the mangrove – nipa ecosystem southeast of Niger delta, Nigeria Mfon T. Udo1 Summary A study of some aspects of the biological characteristics of Porogobius schlegelii [Gobiidae], in two different estuarine swamp creeks within Qua Iboe River estuary, Nigeria, was carried out between January and December 2004, to determine impact of replacement of mangrove by nipa palms. A total of 729 specimens of the fish were examined; out of which 50.2 % were mangrove sample [size 3.6–11.8 cm TL] and 49.8% nipa collections [size 3.7–11.4 cm TL]. In this study it was found that Schlegel’s goby fish, Porogobius schlegelii from the mangrove creek area of Nigeria did not ingest the phytoplankton species Biddulphia spp., the crustacean and mollusc Tympanotonus fuscatus, whereas the algae Gyrosigma spp. and Navicula spp., dipteran larvae and insect remains were absent from dietaries eaten by the nipa creek counterparts. Despite the similarity in the rank-order of the food objects [p < 0.002], there was dissimilarity in the proportions of the food objects. Feeding intensity was higher in nipa vis-à-vis the mangrove creek area. Bi-sexuality existed in sex ratio between the creeks but with females’ dominance in each creek. Males and females from the mangrove creek increased in body weight over those of the nipa. The mangrove creek specimens were higher in the reproductive (gonadosomatic and condition indices) investment. Mean fecundity of 8,466 and 10,164 eggs from the mangrove and nipa creeks respectively, were not statistically different. -
Composition, Diversity and Food Habits of the Fish Community of a Coastal Wetland in Ghana
Journal of Environment and Ecology ISSN 2157-6092 2012, Vol. 3, No. 1 Composition, Diversity and Food Habits of the Fish Community of a Coastal Wetland in Ghana Isaac Okyere (Corresponding Author) E-mail: [email protected] John Blay E-mail: [email protected] Joseph Aggrey-Fynn E-mail: [email protected] Denis Worlanyo Aheto E-mail: [email protected] Department of Fisheries and Aquatic Sciences, School of Biological Sciences University of Cape Coast, Cape Coast, Ghana Received: May 30, 2011 Accepted: June 8, 2011 Published: December 24, 2011 doi:10.5296/jee.v3i1.892 URL: http://dx.doi.org/10.5296/jee.v3i1.892 Abstract This study aims at stimulating the scientific community towards a better understanding of fish community ecology in relation to physico-chemical determinants in unmanaged coastal wetlands relevant for informed decision-making on ecosystem functioning and management in the tropical context. We investigated the diversity, size distribution and food habits of the fish community and the abiotic environmental conditions of the Kakum Estuary wetland in Ghana (5o 6' N; 1 o 18 'W) from July 2009 to February 2010. Eighteen species belonging to 18 genera and 12 families of marine, brackishwater and freshwater fishes were sampled. The poecilid Aplocheilichthys spilauchen (43.31%), the cichlid 1 www.macrothink.org/jee Journal of Environment and Ecology ISSN 2157-6092 2012, Vol. 3, No. 1 Sarotherodon melanotheron (18.12%) and the freshwater shrimp Macrobrachium macrobrachion (12.37%) were dominant. Fish communities in pools in the wetland were quite close in diversity ( H' ranged from 2.2 to 2.7) and highly similar (C s > 0.6) possibly as a result of the prevailing similar environmental conditions. -
A New Genus and Species of Goby from the Swan-Avon Estuary, Western Australia, with a Redescription of the Genus Favonigobius Whitley, 1930
H c \! -lin! \fU\ 1990, 14l~) A new genus and species of goby from the Swan-Avon Estuary, Western Australia, with a redescription of the genus Favonigobius Whitley, 1930 *H. S. Gill and i1>..J Miller Abstract A new genus of gobiid. Papillogohius. is described from specimens collected In the Swan-Avon Estuary. south-western Australia. The genus Fal'Onigohius Whitley. 1930. is rcdescribcd. The type species of the two genera. Papillogohius pune/at!ls sp. novo and Fal'omgohius lateralis (Macleay. 1881), are described and redescnbed respectively. Fal'(migohius exquisi/us. Fa\'onigohius melanohranehus and Fa\'onigohius reiehel are placed in the new genus on the basis of several shared osteological and morphological characters. The characters used to distinguish the new genus from allied genera are also discussed. Introduction Gobies (Gobiidae) are a ubiquitous and abundant component of the teleost fauna of the Swan-Avon and Peel-Harvey Estuaries of south-western Australia (Chubb et al. 1979; Potter et al. 1983). During a study on the distribution, abundance and biology of the various species of gobies in the Swan-Avon Estuary initiated in 1983, by one of us (HSG), it became apparent that the taxonomy of the various species found in the system required attention. Although Chubb et al. (1979) recorded Favonigobius lateralis (Macleay, 1881) in moderately large numbers throughout the estuary, a subsequent more rigorous quantitative analysis by one of us (HSG) showed that individuals assigned to this species were represented by two morphologically distinct forms. One form was caught in very large numbers in the lower estuary and to a lesser extent in the middle estuary, whereas the other was found predominantly in the upper estuary. -
ISSN: 2320-5407 Int. J. Adv. Res. 6(10), 1409-1418
ISSN: 2320-5407 Int. J. Adv. Res. 6(10), 1409-1418 Journal Homepage: -www.journalijar.com Article DOI:10.21474/IJAR01/7950 DOI URL: http://dx.doi.org/10.21474/IJAR01/7950 RESEARCH ARTICLE BIODIVERSITY AND FISH REPRODUCTIVE ASPECTS OF THE SÔ RIVER IN SOUTHERN BENIN. Tobada C. Pamphile1, Agblonon Houelome Thierry Matinkpon2, Houaga Isidore1, Sanni Adéhinlé Aboudou Rachidi1, Youssao A.K.I1 and Chikou Antoine2. 1. Laboratory of Animal Biotechnology and Meat Technology, Department of Animal Health and Production, Polytechnic School of Abomey-Calavi University, 01 BP 2009 Cotonou, Benin Republic. 2. Laboratory of Hydrobiology and Aquaculture, Faculty of Agronomic Sciences, University of Abomey-Calavi, Abomey-Calavi, Benin. …………………………………………………………………………………………………….... Manuscript Info Abstract ……………………. ……………………………………………………………… Manuscript History Sô River, located in southern Benin, like other rivers in the country, is Received: 17 August 2018 subject to human pressure. The aim of this study was to characterize the Final Accepted: 19 September 2018 ichtyofaunal diversity and to evaluate the reproductive aspects of the Published: October 2018 main species. In total, 11 stations have been sampled on the Sô River. Physico-chemical parameters were taken monthly in the morning Keywords:- Ichtyofaun; Inventory, Sô River; between 6 am and 11 am and the fish samples were collected twice a Reproduction. month at each station from June to October 2015. The length-weight relationships, condition factor K, gonado-somatic index (GSI) and the sex ratio were evaluated. The physico-chemical parameters showed a great spatio-temporal variation with stratification in two groups in time and space. In total, the inventory revealed 29 fish species belonging to 16 families and 21 genera. -
Coastal Wetlands Management Project (Cwmp)
COASTAL WETLANDS MANAGEMENT PROJECT (CWMP) SONGOR RAMSAR SITE MANAGEMENT PLAN By Dr. P.K. Ofori-Danson PREPARED FOR THE WILDLIFE DIVISION OF THE FORESTRY COMMISSION, DECEMBER 1999. TABLE OF CONTENTS Table of contents i List of Tables vii List of Figures viii List of Appendices ix Preamble x PART 1. DESCRIPTION 1 1.0 Description 2 1.1. General Information 2 1.1.1. Location, site description and boundary 2 1.1.2. Land tenure 3 1.1.3. Local perceptions of the site 3 1.1.4. Additional Information 3 1.2. Environmental Information 4 1.2.1. Physical/Abiotic features 4 1.2.1.1. Climate 4 1.2.1.2. Hydrology 4 1.2.1.3. Geology and soils 4 1.2.2. Biological/Biotic Features 5 i 1.2.2.1 Flora 5 1.2.2.2. Communities 5 1.2.2.3. Fauna 6 1.2.3. Cultural 7 1.2.3.1. Past Land use 7 1.2.3.2. Present Land use 7' 1.2.4. Ecological Relationships and Implications for management 8 PART 2. EVALUATION 9 2.0. Evaluation 10 2.1. Ecological Evaluation 10 2.1.1. Size and position of the Songor Wetland 10 2.1.2. Biological diversity 10 2.1.3. Naturalness 11 2.1.4. Rarity 12 2.1.5. Fragility 13 2.1.6. Typicalness 14 2.1.7. Recorded history 14 2.1.8. Potential for development 15 2.1.9. Aesthetic, cultural and religious value 15 2.2. Socio-economic evaluation 16 2.2.1. -
JBES-Vol-16-No-4-P-1
J. Bio. & Env. Sci. 2020 Journal of Biodiversity and Environmental Sciences (JBES) ISSN: 2220-6663 (Print) 2222-3045 (Online) Vol. 16, No. 4, p. 121-132, 2020 http://www.innspub.net RESEARCH PAPER OPEN ACCESS Inventorying the ichthyologic fauna of Ahémé Lake and its Channels (South-West Benin, West Africa) Christian Comlan Viaho*1,3, Djiman Lédéroun1, Thierry Matinkpon Agblonon Houelome1, Delphine Adandedjan1, Ahouansou Montcho2, Hippolyte Agadjihouèdé2, Martin Gbedey3, Philippe Lalèyè1 1Laboratory of Hydrobiology and Aquaculture, Faculty of Agricultural Sciences, University of Abomey-Calavi, Cotonou, Benin 2Laboratory Research in Aquaculture, Biology and Aquatic Ecology; School of Aquaculture, National University of Agriculture (UNA), Kétou, Benin 3Integrated Development for Economic Zone of Ahémé Lake and its Channels Agency (ADELAC), Sègbohouè, Kpomassè, Sègbohouè, Bénin Article published on April 30, 2020 Key words: Inventorying, Fish fauna, Experimental fishing, Lake, Channels Abstract The present study aims at contributing to a better understanding of Lake Ahémé and its surroundings together with its channels through an update of its fish fauna. The study covers twelve months, from May 2016 to April 2017. Fish specimens which were examined were collected from catches by fishermen as well as from monthly experimental fishing at 19 stations. A total of 73 fish species belonging to 59 genera and 38 families were identified. The Gobiidae family is the most represented with 6 species; the Carangidae and Cichlidae families are next, with 5 species each; then comes the Clupeidae with 4 species; and the Eleotridae, Clariidae, and Lutjanidae families with 3 species each. Strictly estuarine species (E) dominate the population and account for 87.7% of the total species richness *Corresponding Author: Christian Comlan Viaho [email protected] 121 | Viaho et al. -
A Revision of Irvine's Marine Fishes of Tropical West Africa
A Revision of Irvine’s Marine Fishes of Tropical West Africa by ALASDAIR J. EDWARDS Tropical Coastal Management Studies, Department of Marine Sciences and Coastal Management, University of Newcastle, Newcastle upon Tyne NE1 7RU, United Kingdom ANTHONY C. GILL Department of Zoology, The Natural History Museum, Cromwell Road, London SW7 5BD, United Kingdom and PARCY O. ABOHWEYERE, Nigerian Institute for Oceanography and Marine Research, Wilmot Point Road, Bar-Beach, P.M.B. 12729, Victoria Island, Lagos, Nigeria TABLE OF CONTENTS INTRODUCTION .......................................................................................................................1 SHARKS AND RAYS (EUSELACHII) .......................................................................................4 Sixgill and Sevengill sharks (Hexanchidae) ......................................................................................4 Sand tiger sharks (Odontaspididae) .................................................................................................5 Mackerel sharks (Lamnidae) .........................................................................................................5 Thresher Sharks (Alopiidae) ..........................................................................................................7 Nurse sharks (Ginglymostomatidae) ...............................................................................................7 Requiem sharks (Carcharhinidae) ...................................................................................................8 -
148Th Inuagural Lecture- 2018 by PROFESSOR
UNIVERSITY OF PORT HARCOURT THE UNSUNG HEROES OF OUR TIME An Inaugural Lecture By PROFESSOR (MRS) ADUABOBO IBITORU HART BSc (Ibadan); MSc., PhD (UPH) Department of Animal and Environmental Biology, Faculty of Science INAUGURAL LECTURE SERIES NO. 148 June 14, 2018 i University of Port Harcourt Printing Press Ltd. University of Port Harcourt, Port Harcourt, Nigeria. E-mail: [email protected] © Professor (Mrs) Aduabobo Ibitoru Hart ISSN: 1119-9849 INAUGURAL LECTURE SERIES NO.148 DELIVERED: JUNE 14, 2018 All Rights Reserved Designed, Printed and Bound by UPPL. ii DEDICATION To my Forever God who never fails and is Faithful iii ACKNOWLEDGEMENTS I thank my FOREVER GOD who is faithful and has never failed or forsaken me. My late father Rev. Canon T. T. Green the first graduate priest of the Anglican Communion of the Old Niger Delta Diocese. He introduced me at a young age to the University setting by taking me to my first convocation ceremony as the first chaplain of the University of Nigeria Nsukka protestant chaplaincy. Later in life he threw a simple challenge to his children that if he could get a degree from Durham University at forty any of us who stops at a first degree has tried but has not put in his/her best. He did not bully, scold or force but prayed and encouraged us and by the grace of God all of us exceeded first degree. The International Daddy of all I appreciate and love you. Our Mum known as Aunty, late Mrs. Adeline Siminibigha Green, Headmaster Special Grade, the disciplinarian, born teacher, local doctor and all round builder who did not let me score 8 out of 10 in mental sums but made sure it was a regular 10 or 9 out of 10. -
Trophic Ecology and Ecomorphology of Fish
Trophic ecologyand ecomorphology of fish assemblagesin coastal lakes of Benin, West Africa! Alphonse ADlTE2 & Kirk O. WINEMILLER, Departmentof Wildlife and FisheriesSciences. Texas A&M University, College Station.Texas 77843.U.S.A.. e-mail: [email protected] Abstract: The feeding ecology and morphological diversification of fish assemblages of two coastal lakes in southern Benin (West Africa) were examined to compare patterns of community organization. Though located only 18 km apart, the two fish assemblages had dissimilar species composition. and this is largely derived from differences in connectivity to the Gulf of Guinea, salinity and pH. Among the 35 and 20 species sampled from Lake Nokoue (connected with a sea) and Lagoon Toho- Todougba (no sea connection), respectively, only a few species dominated each system. Lake Nokoue was dominated by the perciform Gerres meLanopterus and the clupeiform Ethmalosa fimbria/a, and Lagoon Toho- Todougba was dominated by the characiformBrycinus Longipinnis. In Lake Nokoue. the akadja habitat (dense stands of woody debris installed by humans to attract fishes) had high species richness compared to the other lake habitats. Multivariate procedures were used to examine trophic guilds and the relationship between morphology and diet. Overall. thirteen trophic guilds were identified. with detritivore and piscivore guilds having the most species. Lagoon Toho- Todougba was dominated by detritivorous and insectivorous species and Lake Nokoue, a larger lake with a connection to the sea. was dominated by piscivores. In Lagoon Toho- Todougba, consumption of vegetation and insects was common, but these items were very rare in Lake Nokoue fish diets. possibly because the destruction of its fringing mangroves has reduced their availability for fishes. -
Systematics of Callogobius (Teleostei: Gobiidae)
Systematics of Callogobius (Teleostei: Gobiidae) by Naomi Rachel Delventhal A Thesis submitted to the Faculty of Graduate Studies of The University of Manitoba in partial fulfillment of the requirement of the degree of DOCTOR OF PHILOSOPHY Department of Biological Sciences University of Manitoba Winnipeg Copyright © 2018 by Naomi R Delventhal i Abstract Callogobius is a large genus of gobies characterized by fleshy ridges of papillae on the head in both horizontal and vertical rows. The taxonomy and phylogenetics of the genus are difficult and poorly understood. The purpose of my research is to better categorize the diversity within Callogobius by identifying and describing morphological characters and using them to aid species identification and discovery of monophyletic sub-groups within the genus. In this thesis, I construct separate phylogenetic hypothesizes for the intrarelationships of Callogobius using morphological and molecular data, respectively. Parsimony analysis using morphological characters (external anatomy and osteology) supports the presence of three monophyletic groups within Callogobius, the hasseltii, sclateri and maculipinnis groups. A fourth group, the tutuilae group, contains several species, at least some of which share some characters with members of the sclateri group. A molecular phylogenetic approach using four genes (zic1, a partial fragment containing 12S, tRNAVal and 16S, rag1 and sreb2) and analyzed using maximum parsimony, maximum likelihood and Bayesian inference supports the monophyly of Callogobius, the hasseltii, sclateri and maculipinnis groups; the tutuilae group is resolved as paraphyletic with respect to the sclateri group. Reductive traits, such as small size and loss of head pores appear to have evolved multiple times independently. In addition to phylogenetic analyses, I address some of the taxonomic issues within Callogobius through the descriptions of two new species, C.