Aquatic Wild Meat in West Africa a Briefing by Oceancare
Total Page:16
File Type:pdf, Size:1020Kb
Load more
Recommended publications
-
West Indian Manatee (Trichechus Manatus) Habitat Characterization Using Side-Scan Sonar
Andrews University Digital Commons @ Andrews University Master's Theses Graduate Research 2017 West Indian Manatee (Trichechus Manatus) Habitat Characterization Using Side-Scan Sonar Mindy J. McLarty Andrews University, [email protected] Follow this and additional works at: https://digitalcommons.andrews.edu/theses Part of the Biology Commons Recommended Citation McLarty, Mindy J., "West Indian Manatee (Trichechus Manatus) Habitat Characterization Using Side-Scan Sonar" (2017). Master's Theses. 98. https://digitalcommons.andrews.edu/theses/98 This Thesis is brought to you for free and open access by the Graduate Research at Digital Commons @ Andrews University. It has been accepted for inclusion in Master's Theses by an authorized administrator of Digital Commons @ Andrews University. For more information, please contact [email protected]. ABSTRACT WEST INDIAN MANATEE (TRICHECHUS MANATUS) HABITAT CHARACTERIZATION USING SIDE-SCAN SONAR by Mindy J. McLarty Chair: Daniel Gonzalez-Socoloske ABSTRACT OF GRADUATE STUDENT RESEARCH Thesis Andrews University School of Arts and Sciences Title: WEST INDIAN MANATEE (TRICHECHUS MANATUS) HABITAT CHARACTERIZATION USING SIDE-SCAN SONAR Name of researcher: Mindy J. McLarty Name and degree of faculty chair: Daniel Gonzalez-Socoloske, Ph.D. Date completed: April 2017 In this study, the reliability of low cost side-scan sonar to accurately identify soft substrates such as grass and mud was tested. Benthic substrates can be hard to classify from the surface, necessitating an alternative survey approach. A total area of 11.5 km2 was surveyed with the sonar in a large, brackish mangrove lagoon system. Individual points were ground-truthed for comparison with the sonar recordings to provide a measure of accuracy. -
Energetic Tradeoffs Control the Size Distribution of Aquatic Mammals William Gearty
University of Nebraska - Lincoln DigitalCommons@University of Nebraska - Lincoln Faculty Publications in the Biological Sciences Papers in the Biological Sciences 4-17-2018 Energetic tradeoffs control the size distribution of aquatic mammals William Gearty Craig R. McClain Jonathan Payne Follow this and additional works at: https://digitalcommons.unl.edu/bioscifacpub Part of the Biology Commons, Evolution Commons, and the Terrestrial and Aquatic Ecology Commons This Article is brought to you for free and open access by the Papers in the Biological Sciences at DigitalCommons@University of Nebraska - Lincoln. It has been accepted for inclusion in Faculty Publications in the Biological Sciences by an authorized administrator of DigitalCommons@University of Nebraska - Lincoln. Energetic tradeoffs control the size distribution of aquatic mammals William Geartya,1, Craig R. McClainb, and Jonathan L. Paynea aDepartment of Geological Sciences, Stanford University, Stanford, CA 94305; and bLouisiana Universities Marine Consortium, Chauvin, LA 70344 Edited by Nicholas D. Pyenson, Smithsonian Institution, Washington, DC, and accepted by Editorial Board Member David Jablonski February 23, 2018 (received for review August 8, 2017) Four extant lineages of mammals have invaded and diversified in the entering the water will increase in average size, these theories differ in water: Sirenia, Cetacea, Pinnipedia, and Lutrinae. Most of these aquatic their predictions for how such a size change is achieved. More spe- clades are larger bodied, on average, than their closest land-dwelling cifically, they differ in their predictions both about the rate of evo- relatives, but the extent to which potential ecological, biomechanical, lution toward the new, larger average size as well as the variance of and physiological controls contributed to this pattern remains untested the aquatic size distribution relative to its terrestrial sister group (22). -
Functional Morphology of the Vertebral Column in Remingtonocetus (Mammalia, Cetacea) and the Evolution of Aquatic Locomotion in Early Archaeocetes
Functional Morphology of the Vertebral Column in Remingtonocetus (Mammalia, Cetacea) and the Evolution of Aquatic Locomotion in Early Archaeocetes by Ryan Matthew Bebej A dissertation submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy (Ecology and Evolutionary Biology) in The University of Michigan 2011 Doctoral Committee: Professor Philip D. Gingerich, Co-Chair Professor Philip Myers, Co-Chair Professor Daniel C. Fisher Professor Paul W. Webb © Ryan Matthew Bebej 2011 To my wonderful wife Melissa, for her infinite love and support ii Acknowledgments First, I would like to thank each of my committee members. I will be forever grateful to my primary mentor, Philip D. Gingerich, for providing me the opportunity of a lifetime, studying the very organisms that sparked my interest in evolution and paleontology in the first place. His encouragement, patience, instruction, and advice have been instrumental in my development as a scholar, and his dedication to his craft has instilled in me the importance of doing careful and solid research. I am extremely grateful to Philip Myers, who graciously consented to be my co-advisor and co-chair early in my career and guided me through some of the most stressful aspects of life as a Ph.D. student (e.g., preliminary examinations). I also thank Paul W. Webb, for his novel thoughts about living in and moving through water, and Daniel C. Fisher, for his insights into functional morphology, 3D modeling, and mammalian paleobiology. My research was almost entirely predicated on cetacean fossils collected through a collaboration of the University of Michigan and the Geological Survey of Pakistan before my arrival in Ann Arbor. -
In Lower Sanaga Basin, Cameroon: an Ethnobiological Assessment
Mongabay.com Open Access Journal - Tropical Conservation Science Vol.6 (4):521-538, 2013 Research Article Conservation status of manatee (Trichechus senegalensis Link 1795) in Lower Sanaga Basin, Cameroon: An ethnobiological assessment. Theodore B. Mayaka1*, Hendriatha C. Awah1 and Gordon Ajonina2 1 Department of Animal Biology, Faculty of Science, University of Dschang, PO Box 67Dschang, Cameroon. Email: *[email protected], [email protected] 2Cameroon Wildlife Conservation Society (CWCS), Coastal Forests and Mangrove Programme Douala-Edea Project, BP 54, Mouanko, Littoral, Cameroon. Email:[email protected] * Corresponding author Abstract An ethnobiological survey of 174 local resource users was conducted in the Lower Sanaga Basin to assess the current conservation status of West African manatee (Trichechus senegalensis, Link 1795) within lakes, rivers, and coast (including mangroves, estuaries and lagoons). Using a multistage sampling design with semi-structured interviews, the study asked three main questions: (i) are manatees still present in Lower Sanaga Basin? (ii) If present, how are their numbers evolving with time? (iii) What are the main threats facing the manatee? Each of these questions led to the formulation and formal testing of a scientific hypothesis. The study outcome is as follows: (i)60% of respondents sighted manatees at least once a month, regardless of habitat type (rivers, lakes, or coast) and seasons (dry, rainy, or both); (ii) depending on habitat type, 69 to 100% of respondents perceived the trend in manatee numbers as either constant or increasing; the increasing trend was ascribed to low kill incidence (due either to increased awareness or lack of adequate equipment) and to high reproduction rate; and (iii) catches (directed or incidental) and habitat degradation (pollution) ranked in decreasing order as perceived threats to manatees. -
Assessing Aquatic Mammal Welfare While Assessing Differing Values and Imperfect Tradeoffs David S
Aquatic Mammals 2018, 44(2), 116-141, DOI 10.1578/AM.44.2.2018.116 Assessing Aquatic Mammal Welfare While Assessing Differing Values and Imperfect Tradeoffs David S. Miller,1 Raymond Anthony,2 and Gail Golab3 1PO Box 2786, Loveland, CO 80539-2786, USA [email protected] 2Department of Philosophy, University of Alaska Anchorage, 3211 Providence Drive, Anchorage, AK 99508, USA 3American Veterinary Medical Association, 1931 N. Meacham Road, Suite 100, Schaumburg, IL 60173-4360, USA Abstract aquatic mammals. Resolution of aquatic mammal welfare challenges ultimately depends upon stake- Assessments of animal welfare can be complex and holders’ personal relationships and a willingness to controversial, including where captive and free- engage in constructive dialogue. This dialogue must ranging aquatic mammal welfare are of concern. be focused on optimally addressing animal needs An assessor’s value preferences, attitudes, personal for a particular set of circumstances by using ani- experience, and societal values are examples of mal-based measures based on the animal’s perspec- factors that inform how animal welfare is evalu- tive rather than the advancement of a set viewpoint. ated. While there is not a single measure of animal welfare that is universally accepted, assessments of Key Words: aquatic mammals, animal welfare, the welfare of aquatic mammals can be fruitful if behavioral indicators, physiological indicators, informed by tried and true standards and indicators. engineering standards, performance standards, Animal welfare is best viewed within context and Five Domains Model, Three Orientations Model, relative to opportunities for improvement, although value system some animal welfare concerns may clearly be dichotomized as “good” or “bad” via animal wel- Introduction fare assessment tools. -
West African Chimpanzees
Status Survey and Conservation Action Plan West African Chimpanzees Compiled and edited by Rebecca Kormos, Christophe Boesch, Mohamed I. Bakarr and Thomas M. Butynski IUCN/SSC Primate Specialist Group IUCN The World Conservation Union Donors to the SSC Conservation Communications Programme and West African Chimpanzees Action Plan The IUCN Species Survival Commission is committed to communicating important species conservation information to natural resource managers, decision makers and others whose actions affect the conservation of biodiversity. The SSC’s Action Plans, Occasional Papers, newsletter Species and other publications are supported by a wide variety of generous donors including: The Sultanate of Oman established the Peter Scott IUCN/SSC Action Plan Fund in 1990. The Fund supports Action Plan development and implementation. To date, more than 80 grants have been made from the Fund to SSC Specialist Groups. The SSC is grateful to the Sultanate of Oman for its confidence in and support for species conservation worldwide. The Council of Agriculture (COA), Taiwan has awarded major grants to the SSC’s Wildlife Trade Programme and Conser- vation Communications Programme. This support has enabled SSC to continue its valuable technical advisory service to the Parties to CITES as well as to the larger global conservation community. Among other responsibilities, the COA is in charge of matters concerning the designation and management of nature reserves, conservation of wildlife and their habitats, conser- vation of natural landscapes, coordination of law enforcement efforts, as well as promotion of conservation education, research, and international cooperation. The World Wide Fund for Nature (WWF) provides significant annual operating support to the SSC. -
Recommendations for the Care and Maintenance of Marine Mammals © Canadian Council on Animal Care, 2014
Recommendations for the care and maintenance of marine mammals © Canadian Council on Animal Care, 2014 ISBN: 978-0-919087-57-6 Canadian Council on Animal Care 190 O’Connor St., Suite 800 Ottawa ON K2P 2R3 http://www.ccac.ca Acknowledgements The development of the Recommendations for the care and maintenance of marine mammals was com- missioned to the Canadian Council on Animal Care (CCAC) by the Department of Fisheries and Oceans Canada (DFO). To complete this task, the CCAC Standards Committee created the ad hoc subcommittee on marine mammals. We acknowledge and thank all the members of the subcommittee who worked together to develop, review, and guide this document through to publication: Dr. Pierre-Yves Daoust, University of Prince Edward Island Mr. John Ford, Fisheries and Oceans Canada (DFO) Mr. Henrik Kreiberg, Fisheries and Oceans Canada (DFO) Dr. Clément Lanthier, Calgary Zoo Dr. Kay Mehren, Veterinarian Emeritus, Toronto Zoo Ms. Tracy Stewart, Marineland of Canada Mr. Clint Wright, Vancouver Aquarium Dr. Gilly Griffin, Canadian Council on Animal Care We would also like to take this opportunity to recognize the dedication and vision of Dr. Jon Lien (Memo- rial University, deceased 2010), the Committee’s first Chair. Jon played a pivotal role in the creation of this document. It was the Lien Report: A review of live- capture and captivity of marine mammals in Canada that inspired DFO to request that CCAC develop recommendations for the care and maintenance of marine mammals. His vision became a collective goal - to improve the quality of life for all marine mammals held in captivity. -
Anatomical Adaptations of Aquatic Mammals
THE ANATOMICAL RECORD 290:507–513 (2007) Anatomical Adaptations of Aquatic Mammals JOY S. REIDENBERG* Center for Anatomy and Functional Morphology, Department of Medical Education, Mount Sinai School of Medicine, New York, New York ABSTRACT This special issue of the Anatomical Record explores many of the an- atomical adaptations exhibited by aquatic mammals that enable life in the water. Anatomical observations on a range of fossil and living marine and freshwater mammals are presented, including sirenians (manatees and dugongs), cetaceans (both baleen whales and toothed whales, includ- ing dolphins and porpoises), pinnipeds (seals, sea lions, and walruses), the sea otter, and the pygmy hippopotamus. A range of anatomical sys- tems are covered in this issue, including the external form (integument, tail shape), nervous system (eye, ear, brain), musculoskeletal systems (cranium, mandible, hyoid, vertebral column, flipper/forelimb), digestive tract (teeth/tusks/baleen, tongue, stomach), and respiratory tract (larynx). Emphasis is placed on exploring anatomical function in the context of aquatic life. The following topics are addressed: evolution, sound produc- tion, sound reception, feeding, locomotion, buoyancy control, thermoregu- lation, cognition, and behavior. A variety of approaches and techniques are used to examine and characterize these adaptations, ranging from dissection, to histology, to electron microscopy, to two-dimensional (2D) and 3D computerized tomography, to experimental field tests of function. The articles in this issue are a blend of literature review and new, hy- pothesis-driven anatomical research, which highlight the special nature of anatomical form and function in aquatic mammals that enables their exquisite adaptation for life in such a challenging environment. Ó 2007 Wiley-Liss, Inc. -
Terrestrial, Semiaquatic, and Fully Aquatic Mammal Sound Production Mechanisms
Terrestrial, Semiaquatic, and Fully Aquatic Mammal Sound Production Mechanisms Joy S. Reidenberg Aquatic mammals generate sound underwater but use air-driven systems derived from terrestrial ancestors. How do they do it without drowning? Postal: Center for Anatomy and Functional Morphology Terrestrial mammals produce sound in air mainly for communication, while many Icahn School of Medicine at aquatic mammals can communicate by vocalizing in air or underwater. A sub- Mount Sinai set of aquatic mammals called odontocetes (toothed whales, including dolphins 1 Gustave L. Levy Place and porpoises) can also use echolocation sounds for navigation and prey track- Mail Box 1007 ing. In all cases, mammals use pneumatic (air-driven) mechanisms to generate New York, New York these sounds, but the sources and transmission pathways differ depending upon 10029-6574 whether sounds are emitted into air or water. USA Terrestrial Mammals Email: The voice box, or larynx, is the organ of vocalization used by most terrestrial mam- [email protected] mals. It initially evolved from the protective anatomy used to keep water out of a buoyancy organ in fish (the swim bladder). The main function of the larynx remains protection, only now it prevents incursions of foreign material into the “windpipe” (trachea) and lungs of mammals. The entrance of the larynx is sealed by a pair of vocal “cords” (vocal folds). In ad- dition, there are tall cartilages (epiglottic and corniculate) that act as splashguards to deflect food and water away from the opening. These cartilages overlap in front with the soft palate and behind with the posterior wall of the airspace (pharyn- geal wall) to interlock the larynx with the rear of the nasal cavity (Figure 1). -
APHIS-Wildlife Services' Aquatic Mammal Damage Management
November 2, 2017 Sent via Email and U.S. Mail William H. Clay, Deputy Administrator USDA APHIS Wildlife Services 1400 Independence Avenue SW Room 1624 South Agriculture Building Washington, DC 20250-3402 [email protected] David Williams, State Director Oregon Wildlife Services 6135 NE 80th Ave., Suite A-8 Portland, OR 97218 [email protected] Wilbur Ross, Secretary U.S. Department of Commerce 1401 Constitution Avenue NW, Room 5516 Washington, DC 20230 [email protected] Ryan Zinke, Secretary Department of the Interior 1849 C Street NW Washington, DC 20240 [email protected] Re: Notice of Violations of the Endangered Species Act and its Regulations Regarding APHIS-Wildlife Services’ Aquatic Mammal Damage Management Program in Oregon On behalf of the Center for Biological Diversity and Northwest Environmental Advocates, we hereby provide notice, pursuant to Section 11(g) of the Endangered Species Act (“ESA”), 16 U.S.C. § 1540(g), that the Wildlife Services program (within the U.S. Department of Agriculture Animal and Plant Health Inspection Service, hereinafter “APHIS-Wildlife Services”) is in violation of Section 7 of the ESA, 16 U.S.C. § 1536, and the ESA’s consultation regulations, 50 C.F.R. Part 402. Beavers are nature’s engineers, building dams and creating ponds that are used by and essential to a variety of rare wildlife species in Oregon. Despite their documented importance to recovery of threatened and endangered salmon and steelhead, and estimates of beaver populations’ being only 3 – 10 percent of their historical levels, programs to kill beavers in Oregon continue unabated (NMFS 2016a, p. -
West African Manatee Trichechus Senegalensis
y & E sit nd er a iv n g Laudisoit A et al., J Biodivers Endanger Species 2017, 5:1 d e o i r e B d Journal of DOI: 10.4172/2332-2543.1000181 f S o p l e a c ISSN:n 2332-2543 r i e u s o J Biodiversity & Endangered Species Review Article Open Access West African Manatee Trichechus senegalensis (LINK, 1795) in the Estuary of the Congo River (Democratic Republic of the Congo): Review and Update Laudisoit A1-4*, Collet M5,6, Muyaya B5, Mauwa C7, Ntadi S7, Wendelen W8, Guiet A5, Helsen P1,9, Baudouin M7,10, Leirs H1, Vanhoutte N1, Micha JC7,11 and Verheyen E1,10 1Evolutionary Ecology Group, University of Antwerp, Antwerp, Belgium 2Center for International Forestry Research (CIFOR), Situ Gede, Sindang Barang Bogor (Barat) 16115, Indonesia 3Institute of Integrative Biology, University of Liverpool, UK 4Royal Belgian Institute of Natural Sciences, OD Taxonomy and Phylogeny, 1000 Brussels, Belgium 5Marine Mangrove Park, Moanda, Democratic Republic of the Congo 6Snake Venom Extraction Centre, University of Kinshasa, Democratic Republic of the Congo 7Postgraduate Regional School of Planning and Integrated Management of Tropical Forests and Territories (ERAIFT), University of Kinshasa, Kinshasa, Democratic Republic of Congo 8Royal Museum for Central Africa, 3080 Tervuren, Belgium 9Royal Zoological Society of Antwerp (RZSA), Centre for Research and Conservation, 2018 Antwerp, Belgium 10University of Liège/Gembloux, Rural Economy and Development Group, 5030 Gembloux, Belgium 11University of Namur, 5000 Namur, Belgium Abstract The West African manatee Trichechus senegalensis (LINK, 1795) is the least studied Sirenian species, with both old and fragmentary literature on the population in the Congo River estuary. -
Phylogenetic Study of West African Manatee (Trichechus Senegalensis Link (1708) Along River Benue, Nigeria
Iwar a et al., 2019 Journal of Research in Forestry, Wildlife & Environment Vol. 11(4) December, 2019 E-mail: [email protected]; [email protected] http://www.ajol.info/index.php/jrfwe 70 jfewr ©2019 - jfewr Publications ISBN: 2141 – 1778 This work is licensed under a Iwar a et al., 2019 Creative Commons Attribution 4.0 License PHYLOGENETIC STUDY OF WEST AFRICAN MANATEE (TRICHECHUS SENEGALENSIS LINK (1708) ALONG RIVER BENUE, NIGERIA Iwar, I. M.1, Egwumah, P. O.1 and Olufeagba, S. O2. 1Dept. of Wildlife and Range management, Federal University of Agriculture, makurdi 2Dept of Fisheries and Aquaculture, Federal University of Agriculture, makurdi *Correspondent email: [email protected]; [email protected]; 07030857281 ABSTRACT The Phylogenetic study of West African Manatee was carried out to determine the relatedness of the same species at two distant locations Lokoja and Makurdi along River Benue in Nigeria.DNA was extracted and sequenced according to standard protocols. The result indicated that transition/transversion rate /ratios are k1 = 2.245 (purines) and k2 = 0.00 (pyrimidines). The estimated transition/transversion bias R = 0.701..The average population coefficient of evolutionary differentiation (D=0.013±0.004) was 38.5% less than the intra-population value (D=0.018±0.006). K2P distance for nucleotide diversity shows that the Lokoja A (LA) sample is close to the Makurdi B (MB) sample while MB is closer to Lokoja B (LB).In terms of the phylogenetic tree the result indicates that the species Lokoja A is more closely related to Makurdi than it is to Lokoja B.It is either that Lokoja A migrated to Lokoja from Makurdi or the sample was taken there by the fishermen.