SMALL CETACEANS, BIG PROBLEMS a Global Review of the Impacts of Hunting on Small Whales, Dolphins and Porpoises

Total Page:16

File Type:pdf, Size:1020Kb

SMALL CETACEANS, BIG PROBLEMS a Global Review of the Impacts of Hunting on Small Whales, Dolphins and Porpoises SMALL CETACEANS, BIG PROBLEMS A global review of the impacts of hunting on small whales, dolphins and porpoises A report by Sandra Altherr and Nicola Hodgins Edited by Sue Fisher, Kate O’Connell, D.J. Schubert, and Dave Tilford SMALL CETACEANS, BIG PROBLEMS A global review of the impacts of hunting on small whales, dolphins and porpoises A report by Sandra Altherr and Nicola Hodgins Edited by Sue Fisher, Kate O’Connell, D.J. Schubert, and Dave Tilford ACKNOWLEDGEMENTS The authors would like to thank the following people and institutions for providing helpful input, information and photos: Stefan Austermühle and his organisation Mundo Azul, Conservation India, The Dolphin Project, Astrid Fuchs, Dr. Lindsay Porter, Vivian Romano, and Koen Van Waerebeek. Special thanks also to Ava Rinehart and Alexandra Alberg of the Animal Welfare Institute for the design and layout of this report. GLOSSARY AAWP CMS IMARPE NMFS Abidjan Aquatic Wildlife Partnership Convention on the Conservation of Instituto Del Mar Del Peru National Marine Fisheries Service Migratory Species of Wild Animals ACCOBAMS IUU NOAA Agreement on the Conservation COSWIC Illegal, Unreported and Unregulated National Oceanic and Atmospheric of Cetaceans of the Black Sea, Commission on the Status of Fishing Administration Mediterranean Sea and Contiguous Endangered Wildlife in Canada Atlantic Area IUCN SC CPW International Union for Conservation Scientific Committee (International AQUATIC WILD MEAT Collaborative Partnership on of Nature Whaling Commission) The products derived from aquatic Sustainable Wildlife Management mammals and sea turtles that are IWC SMALL CETACEANS used for subsistence food and DFO International Whaling Commission Small and large cetaceans is traditional uses, including shells, Federal Department of Fisheries & neither a biological, nor political bones and organs, as well as bait for Oceans Ministry (Canada) JCNB classification, but has evolved Greenlandic-Canadian Joint fisheries becoming a widely used semantic DWC Commission for Narwhal and Beluga term. For the purpose of this report, ASCOBANS Department of Wildlife Conservation small cetacean refers to all toothed MEA Agreement on the Conservation of whales except sperm whales. Multilateral Environmental Small Cetaceans of the Baltic, North ECS Eastern Chukchi Sea Agreements East Atlantic, Irish and North Seas UNEP United Nations Environmental EBS MMC AWBC Programme Eastern Bering Sea Marine Mammal Commission Alaska Beluga Whale Commission UNESCO EHB MOU CBD United Nations Educational, East Hudson Bay Memoranda of Understanding Convention on Biological Diversity Scientific and Cultural Organization EU NAMMCO CDNP European Union North Atlantic Marine Mammal Conkovati-Douli National Park Commission ICRW CITES International Convention for the Convention on International Trade in NDF Regulation of Whaling Non-Detriment Finding Endangered Species of Wild Fauna and Flora TABLE OF CONTENTS SEC. 1 EXECUTIVE SUMMARY 2 3.5.6 MYANMAR 33 3.5.7 PAKISTAN 33 SEC. 2 INTRODUCTION 3 3.5.8 PHILIPPINES 34 SEC. 3 SMALL CETACEAN HUNTING – 3.5.9 SRI LANKA 35 A GLOBAL PROBLEM 5 3.5.10 TAIWAN, PROVINCE OF CHINA 36 3.1 ARCTIC REGION 5 3.5.11 VIETNAM 37 3.1.1 ALASKA/USA 5 3.6 OCEANIA 38 3.1.2 CANADA 6 3.6.1 KIRIBATI 38 3.1.3 GREENLAND 8 3.6.2 SOLOMON ISLANDS 39 3.1.4 RUSSIAN FEDERATION 9 3.2 EUROPE 10 SEC. 4 SMALL CETACEANS IN INTERNATIONAL CONVENTIONS 40 3.2.1 FAROE ISLANDS 11 4.1 INTERNATIONAL CONVENTION ON THE 3.2.2 ITALY 13 REGULATION OF WHALING 40 3.2.3 TURKEY 13 4.2 CONVENTION ON THE CONSERVATION OF 3.3 LATIN AMERICA AND THE CARIBBEAN 14 MIGRATORY SPECIES OF WILD ANIMALS 40 3.3.1 BRAZIL 14 4.3 CONVENTION ON INTERNATIONAL TRADE IN ENDANGERED SPECIES OF WILD FAUNA 3.3.2 COLOMBIA 16 AND FLORA 41 3.3.3 GUATEMALA 16 4.4 CONVENTION ON BIOLOGICAL DIVERSITY 42 3.3.4 PERU 17 4.5 BERN CONVENTION 43 3.3.5 VENEZUELA 18 4.6 ABIDJAN CONVENTION/ABIDJAN AQUATIC 3.3.6 WIDER CARIBBEAN REGION 19 WILDLIFE PARTNERSHIP 43 3.4 AFRICA 20 SEC. 5 SMALL CETACEANS AND FOOD SECURITY 44 3.4.1 CAMEROON 21 5.1 CONTAMINATION BURDEN IN SMALL 3.4.2 GAMBIA, THE 21 CETACEANS AND HUMAN HEALTH ISSUES 44 3.4.3 GHANA 22 5.2 SMALL CETACEAN HUNTS DRIVEN BY INDUSTRIAL FISHING 47 3.4.4 GUINEA-BISSAU 22 3.4.5 MADAGASCAR 23 SEC. 6 ECOLOGICAL AND WELFARE IMPACTS OF THE HUNTS 48 3.4.6 MAURITANIA 23 6.1 SMALL CETACEAN HUNTS WORLDWIDE 48 3.4.7 MOZAMBIQUE 24 6.2 SUSTAINABILITY OF THE HUNT 52 3.4.8 NIGERIA 24 6.3 WELFARE CONCERNS FOR SMALL 3.4.9 REPUBLIC OF CONGO 25 CETACEAN HUNTS 55 3.4.10 SENEGAL 25 SEC. 7 CONCLUSIONS AND RECOMMENDATIONS 56 3.4.11 TANZANIA 26 7.1 CONCLUSIONS 56 3.4.12 TOGO 26 7.2 RECOMMENDATIONS TO RANGE STATES 57 3.5 ASIA 27 7.3 RECOMMENDATIONS TO THE IWC 58 3.5.1 INDIA 28 7.4 RECOMMENDATIONS TO THE CMS 58 3.5.2 INDONESIA 29 7.5 RECOMMENDATIONS TO CITES 59 3.5.3 JAPAN 30 7.6 RECOMMENDATIONS TO THE CBD 59 3.5.4 KOREA, REPUBLIC OF 31 3.5.5 MALAYSIA 32 SEC. 8 REFERENCES 60 SECTION 1 // EXECUTIVE SUMMARY The hunting of small cetaceans (i.e., all toothed whales, et al. 2014; Debrah et al. 2010). Mintzer et al. (2018) except the sperm whale) for food or fishing bait is far warn that dolphin hunts may expand even further in more widespread than most people realise. While in some regions. recent years public attention has focused on hunts in Japan (specifically in Taiji) and the Danish Faroe Islands, The reasons for killing small cetaceans differ from small cetaceans are deliberately killed at similar or country to country; some species have been hunted even higher levels in several other regions. Overall, by indigenous people in a number of places around approximately 100,000 small whales, dolphins, and the world for millennia. In other regions, especially porpoises are intentionally killed each year worldwide. in parts of West Africa, Asia, and in other areas In most cases, these are unregulated, or even illegal, where industrialised and often illegal, unreported, hunts. Typically, they are unsustainable and poorly and unregulated (IUU) fishing is overexploiting fish documented and their impact on populations is resources, small cetaceans are increasingly hunted as unknown. Where legislation is in place, appropriate aquatic wild meat3 to meet the protein demands of a control and rigorous enforcement measures are often growing human population. lacking. This report aims to give a global overview of the scale of small cetacean hunts, the number of individuals An increasingly common trend is the evolution from and species targeted, and their ecological impact. opportunistic use of dolphins entangled in fishing nets (‘bycatch’), to the growth of a market for their meat as By far, the world’s largest kill of small cetaceans is in food or fishing bait and the development of a targeted Peru, where up to 15,000 dolphins are killed annually hunt to meet the ensuing demand. Some species are to be used as bait in shark fisheries. Other countries killed because they are perceived as competitors for (see Section 3) where direct takes of more than commercial fish species. In many areas, small cetacean 1,000 individuals annually occur are Brazil, Canada, hunting is unselective—no specific species, size, or Greenland,1 Ghana, Guatemala, India, Indonesia, sex is targeted; instead, the most easily accessible— Japan, Madagascar, Malaysia, Nigeria, Republic of individuals are hunted, making river and coastal Korea, Solomon Islands, Sri Lanka, Venezuela, and dolphins especially vulnerable to over-exploitation. Taiwan, Province of China/Chinese Taipei (henceforth Taiwan (PRC)). Up to several hundred small cetaceans Given the high levels of contaminants that accumulate are hunted each year in the United States (Alaska), in the tissues of small cetaceans, the precarious Cameroon, Colombia, Faroe Islands,2 Guinea Bissau, conservation status of many populations, and their Kiribati, Myanmar, Pakistan, Philippines, Papua slow rate of reproduction, they are not a safe and New Guinea, Senegal, St. Lucia, St. Vincent and the sustainable choice to provide food security (see Grenadines, Vietnam, and Tanzania. Sections 5 and 6). However, as fish stocks decline globally due to commercial over-exploitation, small While the deliberate hunting of small cetaceans is cetacean hunts are likely to further increase unless declining in some areas, in most regions the killing concerted international and domestic efforts are taken of small cetaceans has dramatically increased over to protect both cetacean and fish stocks. To facilitate the last two decades both in terms of number of such efforts, we include recommendations (see individuals and range of species targeted. In 2004, Section 7) to range states and relevant international a report for the Convention on the Conservation of organisations, such as the International Whaling Migratory Species of Wild Animals (CMS) listed 45 Commission (IWC), on how to stop the escalation of small cetacean species as threatened by directed small cetacean hunts. catches (Culik 2004) while this report identifies 56 species that are actively hunted. Moreover, many recent studies report an increase in the number of 1 A self-governing overseas administrative division of the Kingdom of Denmark. animals killed in small cetacean hunts with regard to 2 A self-governing overseas administrative division of the Kingdom of Denmark. 3 While the terms ‘marine bushmeat’ or ‘aquatic wild meat’ can be used numbers of individuals taken (e.g., da Silva et al. 2018; interchangeably, this report will use the term aquatic wild meat as appropriate. Cunha et al. 2015; Salinas et al. 2014; Van Waerebeek This is the term used by the CMS.
Recommended publications
  • Pathological Findings in Cetaceans Sporadically Stranded Along the Chilean Coast
    fmars-07-00684 August 19, 2020 Time: 20:19 # 1 BRIEF RESEARCH REPORT published: 21 August 2020 doi: 10.3389/fmars.2020.00684 Pathological Findings in Cetaceans Sporadically Stranded Along the Chilean Coast Mario Alvarado-Rybak1,2, Frederick Toro3, Paulette Abarca4, Enrique Paredes5, Sonia Español-Jiménez6 and Mauricio Seguel7,8* 1 Sustainability Research Centre, Faculty of Life Sciences, Universidad Andrés Bello, Santiago, Chile, 2 School of Veterinary Medicine, Pontifical Catholic University of Chile, Santiago, Chile, 3 Escuela de Medicina Veterinaria, Facultad de Recursos Naturales y Medicina Veterinaria, Universidad Santo Tomás, Viña del Mar, Chile, 4 Programa de Magíster en Ciencias, Mención Biodiversidad y Conservación, Universidad de Valparaíso, Valparaíso, Chile, 5 Instituto de Patologia Animal, Facultad de Ciencias Veterinarias, Universidad Austral de Chile, Valdivia, Chile, 6 Melimoyu Ecosystem Research Institute, Santiago, Chile, 7 Odum School of Ecology, University of Georgia, Athens, GA, United States, 8 Department of Pathobiology, Ontario Veterinary College, University of Guelph, Guelph, ON, Canada Chile has one of the largest coastlines in the world with at least 50% of the world cetacean species occurring within its jurisdictional waters. However, little is known regarding the health status and main causes of death in cetaceans off continental Chile. In this report, we summarize the major pathological findings and most likely Edited by: causes of death of 15 cetaceans stranded along the Chilean coast between 2010 Stephen Raverty, and 2019. Drowning, due to fishing gear entanglement, was the most likely cause of Animal Health Center, Canada death in 3 Burmeister’s porpoises (Phocoena spinipinnis), a Risso’s dolphin (Grampus Reviewed by: griseus) and a short-beaked common dolphin (Delphinus delphis).
    [Show full text]
  • Marine Mammals of Hudson Strait the Following Marine Mammals Are Common to Hudson Strait, However, Other Species May Also Be Seen
    Marine Mammals of Hudson Strait The following marine mammals are common to Hudson Strait, however, other species may also be seen. It’s possible for marine mammals to venture outside of their common habitats and may be seen elsewhere. Bowhead Whale Length: 13-19 m Appearance: Stocky, with large head. Blue-black body with white markings on the chin, belly and just forward of the tail. No dorsal fin or ridge. Two blow holes, no teeth, has baleen. Behaviour: Blow is V-shaped and bushy, reaching 6 m in height. Often alone but sometimes in groups of 2-10. Habitat: Leads and cracks in pack ice during winter and in open water during summer. Status: Special concern Beluga Whale Length: 4-5 m Appearance: Adults are almost entirely white with a tough dorsal ridge and no dorsal fin. Young are grey. Behaviour: Blow is low and hardly visible. Not much of the body is visible out of the water. Found in small groups, but sometimes hundreds to thousands during annual migrations. Habitat: Found in open water year-round. Prefer shallow coastal water during summer and water near pack ice in winter. Killer Whale Status: Endangered Length: 8-9 m Appearance: Black body with white throat, belly and underside and white spot behind eye. Triangular dorsal fin in the middle of the back. Male dorsal fin can be up to 2 m in high. Behaviour: Blow is tall and column shaped; approximately 4 m in height. Narwhal Typically form groups of 2-25. Length: 4-5 m Habitat: Coastal water and open seas, often in water less than 200 m depth.
    [Show full text]
  • THE CASE AGAINST Marine Mammals in Captivity Authors: Naomi A
    s l a m m a y t T i M S N v I i A e G t A n i p E S r a A C a C E H n T M i THE CASE AGAINST Marine Mammals in Captivity The Humane Society of the United State s/ World Society for the Protection of Animals 2009 1 1 1 2 0 A M , n o t s o g B r o . 1 a 0 s 2 u - e a t i p s u S w , t e e r t S h t u o S 9 8 THE CASE AGAINST Marine Mammals in Captivity Authors: Naomi A. Rose, E.C.M. Parsons, and Richard Farinato, 4th edition Editors: Naomi A. Rose and Debra Firmani, 4th edition ©2009 The Humane Society of the United States and the World Society for the Protection of Animals. All rights reserved. ©2008 The HSUS. All rights reserved. Printed on recycled paper, acid free and elemental chlorine free, with soy-based ink. Cover: ©iStockphoto.com/Ying Ying Wong Overview n the debate over marine mammals in captivity, the of the natural environment. The truth is that marine mammals have evolved physically and behaviorally to survive these rigors. public display industry maintains that marine mammal For example, nearly every kind of marine mammal, from sea lion Iexhibits serve a valuable conservation function, people to dolphin, travels large distances daily in a search for food. In learn important information from seeing live animals, and captivity, natural feeding and foraging patterns are completely lost.
    [Show full text]
  • Dolphin and Orca Behaviour Studies and Individual Identification
    Dolphin and orca behaviour studies and individual identification Blue Marine Foundation and Patagonia Projects Project overview - June 2020 1 BLUE MARINE FOUNDATION AND PATAGONIA PROJECTS DOLPHIN AND ORCA BEHAVIOUR AND INDIVIDUAL IDENTIFICATION 2 Dolphin and orca behaviour studies and individual identification Headlines • Toothed whales include dolphins, whales and belugas. • Chile has an endemic dolphin species, the Chilean dolphin (Cephalorhynchus eutropia), and there are thought to be less than 5000 left in the wild. • Each dolphin or orca has a unique pattern of notches and marks on their dorsal fins. • Patagonia Projects started their orca ID catalogue in 2018 and have 14 individuals documented. • The ability to identify individuals allows site fidelity to be studied: which species live in the Golfo de Penas, and how often do they return to the area? Story Very little is known about which odontocete species – toothed whales – frequent the waters of Chilean Patagonia around the Golfo de Penas. In addition, there are past observations of orca hunting sei whales (to the point where they strand on beaches and die) in this area. This prompted the Patagonia Projects team to more closely investigate and document orca behaviour, as well as any other dolphin species encountered. In November 2018, Patagonia Projects collaborated with Dr Isabella Clegg and set up a protocol for on-effort sightings, recording cetacean behaviour and taking photoID data. The aim was to better understand which cetaceans inhabit the area, whether they are residents and whether there is high site fidelity (do they return each year?), and what they are using the area for.
    [Show full text]
  • 213 Subpart I—Taking and Importing Marine Mammals
    National Marine Fisheries Service/NOAA, Commerce Pt. 218 regulations or that result in no more PART 218—REGULATIONS GOV- than a minor change in the total esti- ERNING THE TAKING AND IM- mated number of takes (or distribution PORTING OF MARINE MAM- by species or years), NMFS may pub- lish a notice of proposed LOA in the MALS FEDERAL REGISTER, including the asso- ciated analysis of the change, and so- Subparts A–B [Reserved] licit public comment before issuing the Subpart C—Taking Marine Mammals Inci- LOA. dental to U.S. Navy Marine Structure (c) A LOA issued under § 216.106 of Maintenance and Pile Replacement in this chapter and § 217.256 for the activ- Washington ity identified in § 217.250 may be modi- fied by NMFS under the following cir- 218.20 Specified activity and specified geo- cumstances: graphical region. (1) Adaptive Management—NMFS 218.21 Effective dates. may modify (including augment) the 218.22 Permissible methods of taking. existing mitigation, monitoring, or re- 218.23 Prohibitions. porting measures (after consulting 218.24 Mitigation requirements. with Navy regarding the practicability 218.25 Requirements for monitoring and re- porting. of the modifications) if doing so cre- 218.26 Letters of Authorization. ates a reasonable likelihood of more ef- 218.27 Renewals and modifications of Let- fectively accomplishing the goals of ters of Authorization. the mitigation and monitoring set 218.28–218.29 [Reserved] forth in the preamble for these regula- tions. Subpart D—Taking Marine Mammals Inci- (i) Possible sources of data that could dental to U.S. Navy Construction Ac- contribute to the decision to modify tivities at Naval Weapons Station Seal the mitigation, monitoring, or report- Beach, California ing measures in a LOA: (A) Results from Navy’s monitoring 218.30 Specified activity and specified geo- graphical region.
    [Show full text]
  • Chlorinated Organic Contaminants in Blubber Biopsies from Northwestern Atlantic Balaenopterid Whales Summering in the Gulf of St Lawrence
    Marine Environmental Research, Vol. 44, No. 2, pp. 201-223, 1997 0 1997 Elsevier Science Ltd All rights reserved. Printed in Great Britain PII: SOl41-1136(97)00004-4 0141-1136/97 $17.00+0.00 Chlorinated Organic Contaminants in Blubber Biopsies from Northwestern Atlantic Balaenopterid Whales Summering in the Gulf of St Lawrence J. M. Gauthier,a* C. D. Metcalfe” & R. Sear@ “Environmental and Resources Studies, Trent University, Peterborough, Ontario, Canada K9J 7B8 bMingan Island Cetacean Study (MICS), 285 Green, St. Lambert, Quebec, Canada J4P IT3 (Received 16 May 1996; revised version received 16 December 1996; accepted 29 December 1996. Published June 1997) ABSTRACT Concentrations and patterns of chlorinated biphenyls (CBS) and other persistent organochlorine compounds (OCs) were determined from small blubber biopsy samples collected from northwestern Atlantic minke (Balaenoptera acuros- trata) , fin (Balaenoptera physalus), blue (Balaenoptera musculus) , and humpback (Megaptera novaeangliae) whales summering in the Gurf of St. Lawrence, Quebec. Concentrations of CPCB (sum of 19 congeners) in biopsy samples ranged from 0.2-10 pg g-’ lipid, and congeners 52, 101, 118, 153, 138 and 180 accounted for 79% of CPCB. Mean concentration of the sum of non- ortho CB congeners in selected biopsy samples was 2 ng g-t lipid, and relative concentrations of these analytes were: 77 > 126 > 81> 169. Concentrations of XDDT ranged from 0.613 pg g-t lipid, and the average proportion of DDE to CDDT was 72%. All other organochlorine analytes were present at concentra- tions below 2 pg g-t lipid. On average, cis-nonachlor, trans-nonachlor and oxy- chlordane accounted for 27, 26 and 23%, respectively, of the chlordane-related analytes, and cl-hexachlorocyclohexane (HCH) comprised 67% of XHCH.
    [Show full text]
  • Food Consumption and Body Measurements of Amazon River Dolphins (Inia Geoffrensis)
    Aquatic Mammals 1999, 25.3, 173–182 Food consumption and body measurements of Amazon river dolphins (Inia geoffrensis) R. A. Kastelein1, B. Neurohr2, S. H. Nieuwstraten1 and P. R. Wiepkema3 1Harderwijk Marine Mammal Park, Strandboulevard Oost 1, 3841 AB Harderwijk, The Netherlands 2Tiergarten Nu¨rnberg, Am Tiergarten 30, D90480 Nu¨rnberg, Germany 3Emeritus Professor of Ethology, Wageningen Agricultural University, Stationsweg 1, 6861 EA Oosterbeek, The Netherlands Abstract dolphin is the most widespread freshwater dolphin in the world, its distribution is limited compared to This report is on the food consumption of 3 male that of most marine odontocetes and it is therefore Amazon river dolphins which were housed in water very likely to become a threatened species. For the of between 27 and 29 C at Duisburg Zoo, management of Amazon river dolphins in the wild, Germany. The food consumption of 2 animals was information is needed about the population size, recorded for 17 successive complete calendar years, age composition and sex ratio, seasonal distribu- that of the third animal for 3 complete successive tion, diet, energy requirements relative to seasonal years. In male 002 the total annual food intake prey distribution and density, and about competi- increased to 1280 kg at the age of 10 years, after tion with other animals and with fisheries. This which it decreased slightly and stabilised at around information could facilitate prey management 1170 kg/year. Male 001 was adult on arrival at the to allow for a certain number of Amazon river zoo. His annual food intake fluctuated at around dolphins in their distribution area.
    [Show full text]
  • Atlantic Spotted Dolphin (Stenella Frontalis) and Bottlenose Dolphin (Tursiops Truncatus) Nearshore Distribution, Bimini, the Bahamas
    Nova Southeastern University NSUWorks HCNSO Student Theses and Dissertations HCNSO Student Work 4-29-2020 Atlantic Spotted Dolphin (Stenella frontalis) and Bottlenose Dolphin (Tursiops truncatus) Nearshore Distribution, Bimini, The Bahamas Skylar L. Muller Nova Southeastern University Follow this and additional works at: https://nsuworks.nova.edu/occ_stuetd Part of the Marine Biology Commons, and the Oceanography and Atmospheric Sciences and Meteorology Commons Share Feedback About This Item NSUWorks Citation Skylar L. Muller. 2020. Atlantic Spotted Dolphin (Stenella frontalis) and Bottlenose Dolphin (Tursiops truncatus) Nearshore Distribution, Bimini, The Bahamas. Master's thesis. Nova Southeastern University. Retrieved from NSUWorks, . (530) https://nsuworks.nova.edu/occ_stuetd/530. This Thesis is brought to you by the HCNSO Student Work at NSUWorks. It has been accepted for inclusion in HCNSO Student Theses and Dissertations by an authorized administrator of NSUWorks. For more information, please contact [email protected]. Thesis of Skylar L. Muller Submitted in Partial Fulfillment of the Requirements for the Degree of Master of Science M.S. Marine Biology Nova Southeastern University Halmos College of Natural Sciences and Oceanography April 2020 Approved: Thesis Committee Major Professor: Amy C. Hirons, Ph.D. Committee Member: Kathleen M. Dudzinski, Ph.D. Committee Member: Bernhard Riegl, Ph.D. This thesis is available at NSUWorks: https://nsuworks.nova.edu/occ_stuetd/530 NOVA SOUTHEASTERN UNIVERSITY HALMOS COLLEGE OF NATURAL SCIENCES
    [Show full text]
  • Taxonomic Status of the Genus Sotalia: Species Level Ranking for “Tucuxi” (Sotalia Fluviatilis) and “Costero” (Sotalia Guianensis) Dolphins
    MARINE MAMMAL SCIENCE, **(*): ***–*** (*** 2007) C 2007 by the Society for Marine Mammalogy DOI: 10.1111/j.1748-7692.2007.00110.x TAXONOMIC STATUS OF THE GENUS SOTALIA: SPECIES LEVEL RANKING FOR “TUCUXI” (SOTALIA FLUVIATILIS) AND “COSTERO” (SOTALIA GUIANENSIS) DOLPHINS S. CABALLERO Laboratory of Molecular Ecology and Evolution, School of Biological Sciences, University of Auckland, Private Bag 92019, Auckland, New Zealand and Fundacion´ Omacha, Diagonal 86A #30–38, Bogota,´ Colombia F. TRUJILLO Fundacion´ Omacha, Diagonal 86A #30–38, Bogota,´ Colombia J. A. VIANNA Sala L3–244, Departamento de Biologia Geral, ICB, Universidad Federal de Minas Gerais, Avenida Antonio Carlos, 6627 C. P. 486, 31270–010 Belo Horizonte, Brazil and Escuela de Medicina Veterinaria, Facultad de Ecologia y Recursos Naturales, Universidad Andres Bello Republica 252, Santigo, Chile H. BARRIOS-GARRIDO Laboratorio de Sistematica´ de Invertebrados Acuaticos´ (LASIA), Postgrado en Ciencias Biologicas,´ Facultad Experimental de Ciencias,Universidad del Zulia, Avenida Universidad con prolongacion´ Avenida 5 de Julio, Sector Grano de Oro, Maracaibo, Venezuela M. G. MONTIEL Laboratorio de Ecologıa´ y Genetica´ de Poblaciones, Centro de Ecologıa,´ Instituto Venezolano de Investigaciones Cientıficas´ (IVIC), San Antonio de los Altos, Carretera Panamericana km 11, Altos de Pipe, Estado Miranda, Venezuela S. BELTRAN´ -PEDREROS Laboratorio de Zoologia,´ Colec¸ao˜ Zoologica´ Paulo Burheim, Centro Universitario´ Luterano de Manaus, Manaus, Brazil 1 2 MARINE MAMMAL SCIENCE, VOL. **, NO. **, 2007 M. MARMONTEL Sociedade Civil Mamiraua,´ Rua Augusto Correa No.1 Campus do Guama,´ Setor Professional, Guama,´ C. P. 8600, 66075–110 Belem,´ Brazil M. C. SANTOS Projeto Atlantis/Instituto de Biologia da Conservac¸ao,˜ Laboratorio´ de Biologia da Conservac¸ao˜ de Cetaceos,´ Departamento de Zoologia, Universidade Estadual Paulista (UNESP), Campus Rio Claro, Sao˜ Paulo, Brazil M.
    [Show full text]
  • Morphometrics of the Dolphin Genus Lagenorhynchus: Deciphering A
    Morphometrics of the dolphin genus Lagenorhynchus: deciphering a contested phylogeny Allison Galezo1,2 and Nicole Vollmer1,3 1 Department of Vertebrate Zoology, Smithsonian Institution National Museum of Natural History 2 Department of Biology, Georgetown University 3 NOAA National Systematics Laboratory Background Results & Analysis Discussion • Our morphological data support the hypothesis that Figure 1. Phenogram from cluster analysis of dolphin skull Figure 2. Species symbols key with sample sizes. measurements. Calculated using Euclidian distances and the genus Lagenorhynchus is not monophyletic, evident Height l La. acutus (24) p C. commersonii (5) a b c Ward’s method. from the separation in the phenogram of La. albirostris Height p C. eutropia (2) Recent phylogenetic studies1-7 have indicated that the Distance l La. albirostris (10) and La. acutus from the other Lagenorhynchus species, 0 2 4 6 8 p genus Lagenorhynchus, currently containing the species 0 2 4 6 8 l La. australis (7) C. heavisidii (1) u Li. borealis (11) and the mix of genera in the lowermost clade (Figure 1). L. obliquidensa, L. acutusb , L. albirostrisc, L. obscurusd , L. l La. obliquidens (28) p C. hectori (2) n Unknown (1) • Our results show that La. obscurus and La. obliquidens e f cruciger , and L. australis , is not monophyletic. These C. commersonii l La. obscurus (15) are very similar morphologically, which supports the C. commersonii species were originally grouped together because of C.C. cocommemmersoniirsonii C. commeC. hersoniictori hypothesis that they are closely related: they have C. commeC. hersoniictori similarities in external morphology and coloration, but C. commeC. hersoniictori Figure 3.
    [Show full text]
  • Subsurface and Nighttime Behaviour of Pantropical Spotted Dolphins in Hawai′I
    Color profile: Generic CMYK printer profile Composite Default screen 988 Subsurface and nighttime behaviour of pantropical spotted dolphins in Hawai′i Robin W. Baird, Allan D. Ligon, Sascha K. Hooker, and Antoinette M. Gorgone Abstract: Pantropical spotted dolphins (Stenella attenuata) are found in both pelagic waters and around oceanic is- lands. A variety of differences exist between populations in these types of areas, including average group sizes, extent of movements, and frequency of multi-species associations. Diving and nighttime behaviour of pantropical spotted dolphins were studied near the islands of Maui and Lana′i, Hawai′i, in 1999. Suction-cup-attached time–depth recorder/VHF-radio tags were deployed on six dolphins for a total of 29 h. Rates of movements of tagged dolphins were substantially lower than reported in pelagic waters. Average diving depths and durations were shallower and shorter than reported for other similar-sized odontocetes but were similar to those reported in a study of pantropical spotted dolphins in the pelagic waters of the eastern tropical Pacific. Dives (defined as >5 m deep) at night were deeper (mean = 57.0 m, SD = 23.5 m, n = 2 individuals, maximum depth 213 m) than during the day (mean = 12.8 m, SD = 2.1 m, n = 4 individuals, maximum depth 122 m), and swim velocity also increased after dark. These results, together with the series of deep dives recorded immediately after sunset, suggest that pantropical spotted dolphins around Hawai′i feed primarily at night on organisms associated with the deep-scattering layer as it rises up to the surface after dark.
    [Show full text]
  • Kogia Species Guild
    Supplemental Volume: Species of Conservation Concern SC SWAP 2015 Sperm Whales Guild Dwarf sperm whale (Kogia sima) Pygmy sperm whale (Kogia breviceps) Contributor (2005): Wayne McFee (NOAA) Reviewed and Edited (2012): Wayne McFee (NOAA) DESCRIPTION Taxonomy and Basic Description The pygmy sperm whale was first described by de Blainville in 1838. The dwarf sperm whale was first described by Owen in 1866. Both were considered a Illustration by Pieter A. Folkens single species until 1966. These are the only two species in the family Kogiidae. The species name for the dwarf sperm whale was changed in 1998 from ‘simus’ to ‘sima.’ Neither the pygmy nor dwarf sperm whale are kin to the true sperm whale (Physeter macrocephalus). At sea, these two species are virtually indistinguishable. Both species are black dorsally with a white underside. They possess a shark-like head with a narrow under-slung lower jaw and a light colored “false gill” that runs between the eye and the flipper. Small flippers are positioned far forward on the body. Pygmy sperm whales generally have between 12 and 16 (occasionally 10 to 11) pairs of needle- like teeth in the lower jaw. They can attain lengths up to 3.5 m (11.5 ft.) and weigh upwards of 410 kg (904 lbs.). A diagnostic character of this species is the low, falcate dorsal fin (less than 5% of the body length) positioned behind the midpoint on the back. Dwarf sperm whales generally have 8 to 11 (rarely up to 13) pairs of teeth in the lower jaw and can have up to 3 pairs of teeth in the upper jaw.
    [Show full text]