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data and obtain photographs to help confirm <strong>the</strong>presence <strong>of</strong> <strong>the</strong> subspecies in Taiwan waters.2.2.9 Stenella coeruleoalbaDistributionThe striped dolphin has been added to <strong>the</strong> knowncetacean fauna <strong>of</strong> Vietnam, Thailand, Taiwan, and<strong>the</strong> Philippines since 1995 (Doc. 25, 31). However,it is not known to be common anywhere in <strong>the</strong>region.Population/stock structurePerrin noted that SE Asian population(s) maymove seasonally into Japanese waters wherethis species has been heavily exploited in drivefisheries.2.2.10 Delphinus delphisJefferson and Van Waerebeek (2002) investigatedrecords <strong>of</strong> common dolphins in <strong>the</strong> Indo-Pacificand found that all verifiable records <strong>of</strong> <strong>the</strong> genusfor SE Asia were <strong>of</strong> <strong>the</strong> long-beaked species (D.capensis). Apparently <strong>the</strong> short-beaked species(D. delphis) does not occur in SE Asia. Thenearest records are from sou<strong>the</strong>rn Japan andsou<strong>the</strong>rn Australia.However, <strong>the</strong>re has been very little survey effort indeep <strong>of</strong>fshore waters in this region (e.g., easterncoasts <strong>of</strong> Philippines) and distinguishing thisspecies from D. capensis at sea is not trivial.2.2.11 Delphinus capensisPopulation statusThe striped dolphin does not appear to becommon in any <strong>of</strong> <strong>the</strong> studied nearshore regions<strong>of</strong> SE Asia. The population exploited in Japanhas crashed in recent years (Kasuya 1999), andthis may have affected <strong>the</strong> status <strong>of</strong> this speciesin SE Asia.Habitat statusNo new information.Directed catchesStriped dolphins have been harpooned <strong>of</strong>f Taiwan,but <strong>the</strong>y represent a small proportion <strong>of</strong> <strong>the</strong>total catch (Doc. 6). By-catch is also known frommainland China (Doc. 9).By-catchesIn Taiwan, <strong>the</strong>re are records <strong>of</strong> incidental catchon longlines and in large-mesh drift gillnets (Doc.6). By-catches in gillnets are also known to occurin Fujian Province, P.R. China (Doc. 9).Needs for additional researchNone identified.DistributionThe long-beaked common dolphin occurs through<strong>the</strong> region, in coastal and nearshore waters, and allrecords from tropical waters <strong>of</strong> SE Asia appear tobe <strong>of</strong> <strong>the</strong> exceedingly long-beaked subspecies, D.capensis tropicalis (Jefferson and Van Waerebeek2002). Recent studies indicate that long-beakedcommon dolphins do not occur <strong>of</strong>fshore or aroundoceanic islands in <strong>the</strong> Indo-Pacific (Jefferson andVan Waerebeek 2002). Recent surveys <strong>of</strong>f <strong>the</strong>Cambodian coast have provided <strong>the</strong> first recordsfor that country’s waters (Doc. 34).Population/stock structureMost common dolphins in SE Asia appear to be<strong>of</strong> <strong>the</strong> extremely long-beaked form (D. capensistropicalis). However, <strong>the</strong> standard long-beakedform (D. c. capensis) also seems to occur in <strong>the</strong>more temperate areas, in particular near Taiwanand possibly parts <strong>of</strong> central and nor<strong>the</strong>rn China(Jefferson and Van Waerebeek 2002).Population statusThis species appears to be relatively uncommonamong long-beaked delphinids in <strong>the</strong> tropical<strong>Second</strong> <strong>Workshop</strong> on <strong>the</strong> Biology and Conservation <strong>of</strong> Small Cetaceans and Dugongs <strong>of</strong> SE Asia 75
waters <strong>of</strong> SE Asia, and records in this area arefew. However, it is much more common in Chinesewaters, according to Wang and Jefferson.Population statusThere is an abundance estimate for <strong>the</strong> easternSulu Sea (8,697; CV=30%; Dolar 1999a).Habitat statusThe nearshore habitat <strong>of</strong> this species may beunder relatively greater threat than <strong>the</strong> <strong>of</strong>fshorehabitats <strong>of</strong> more oceanic species.Directed catchesWhile directed catches are known from far<strong>the</strong>rwest in <strong>the</strong> species’ range in <strong>the</strong> Indian Ocean,<strong>the</strong> only known direct takes in SE Asia are <strong>the</strong>harpoon catches in Taiwan reported by Wang andYang (Doc. 6).By-catchesLong-beaked common dolphins are frequently bycaughtin fisheries along <strong>the</strong> coast <strong>of</strong> China (Doc.9; Wang 1990). There are also probable records <strong>of</strong>by-catch in Taiwanese waters (Doc. 6).Needs for additional researchThis species has frequently been misidentifiedin <strong>the</strong> past, and many previous reports in <strong>the</strong>literature are erroneous or unconfirmed. Therefore,new scrutiny <strong>of</strong> existing records would beappropriate.2.2.12 Lagenodelphis hoseiDistributionFraser’s dolphin has been added to <strong>the</strong> knowncetacean faunas <strong>of</strong> Vietnam (Doc. 4) and Thailand(Doc. 31). It strands relatively <strong>of</strong>ten in Taiwan,according to Chou. Dolar noted that <strong>the</strong>re are norecent records for Tañon Strait in <strong>the</strong> Philippines,and <strong>the</strong> species may be absent from that area.Population/stock structurePerrin reported that a recent study (submitted forpublication) indicates population-level differencesbetween Japan and <strong>the</strong> central Philippines.Habitat statusNo new information.Directed catchesThere are records <strong>of</strong> captures used for sharkbait in <strong>the</strong> Babuyan Islands, Philippines (Doc.28). Harpoon catches also occur in Taiwan (Doc.6).By-catchesA specimen at <strong>the</strong> RIMP in nor<strong>the</strong>rn Vietnamwas taken incidentally in a driftnet in a jointJapanese/Vietnamese exploratory fisheriesresource investigation (Doc. 4). The animals usedas shark bait in <strong>the</strong> Babuyan Islands may berecorded as ei<strong>the</strong>r by-catches or direct catches(Doc. 28). Fraser’s dolphins are also taken indriftnets in several o<strong>the</strong>r areas <strong>of</strong> <strong>the</strong> Philippines(Doc.19; Dolar 1994, 1999a) and in Taiwan (Doc.6).Needs for additional researchDistribution and abundance in <strong>the</strong> BabuyanIslands should be investigated because <strong>of</strong> <strong>the</strong>intense fishing effort in that area. O<strong>the</strong>r areaswhere large-mesh drift gillnet fishing occurs in <strong>the</strong>Philippines and elsewhere in SE Asia (e.g., easterncoast <strong>of</strong> Taiwan) should also be investigated.2.2.13 Orcaella brevirostrisDistributionIrrawaddy dolphins have probably been extirpatedor reduced to insignificant numbers in <strong>the</strong> TonleSap (Great Lake) <strong>of</strong> Cambodia (Doc. 34). In <strong>the</strong>Mekong River, <strong>the</strong>y occur only as far upstreamas Khone Falls just above <strong>the</strong> Laos/Cambodiaborder (Doc. 34). Although <strong>the</strong>re was an anecdotalreport <strong>of</strong> <strong>the</strong>ir presence in a tributary <strong>of</strong> <strong>the</strong>76 CMS Technical Series Publication Nº 9 - 2005
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CMS Technical Series Publication N
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Published by the U
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TABLE OF CONTENTSpage1. Preliminari
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AppendicesAppendix 1 - List <strong
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8 CMS Technical Series Publication
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10 CMS Technical Series Publication
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The cetacean species reviewed inclu
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Table 1. Major commercial Commonwea
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(2) State Legislation.In state wate
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(2) Identification of</stro
Page 21 and 22:
Coastal speciesThe most frequently
Page 23 and 24:
Coastal speciesThere are currently
Page 25 and 26: and Guangxi Provinces (Yang et al.
Page 27 and 28: Table 3. Records of</strong
Page 29 and 30: can be viewed as the</stron
Page 31 and 32: Workshop participa
Page 33 and 34: ioaccumulation have not yet been ex
Page 35 and 36: of fishermen who h
Page 37 and 38: are supplied to scholars and organi
Page 39 and 40: threats. Many marine mammal populat
Page 42: waters or recognize important inter
Page 47 and 48: James Cook University (Queensland,
Page 49 and 50: the last ten years
Page 51 and 52: proactive in engaging more staff an
Page 53 and 54: of SE Asia. Two sp
Page 55 and 56: San Francisco (Negros Oriental); Li
Page 57 and 58: Legal status and present management
Page 59 and 60: within 15 kilometers from t
Page 61 and 62: US, has actively participated in ce
Page 63 and 64: the project was su
Page 65 and 66: Recently, the camp
Page 67 and 68: Mekong River downstream of<
Page 69 and 70: porpoises in tropical waters <stron
Page 71 and 72: species in the Ind
Page 73 and 74: Population/stock structureNo new in
Page 75: Needs for additional researchStock
Page 79 and 80: caused mortality is certainly large
Page 81 and 82: Needs for additional researchProper
Page 83 and 84: from SE Asia, it is known to occur
Page 85 and 86: 3.1.7 AustraliaDugongs occur all al
Page 87 and 88: Table 8. Conservation objectives id
Page 89 and 90: 3) Monitoring and assessment <stron
Page 91 and 92: Table 10. Outline of</stron
Page 93 and 94: The group agreed that this set <str
Page 95 and 96: 6. SUMMARY AND CONCLUSIONSThe works
Page 97 and 98: 96 CMS Technical Series Publication
Page 99 and 100: Bank, E. 1931. A popular account <s
Page 101 and 102: Dalebout, M. L., J. G. Mead, C. Sco
Page 103 and 104: Jaaman, S. A., E. Tangon, I. Isnain
Page 105 and 106: Lin, Y.-J. 1997. Mitochondrial DNA
Page 107 and 108: Smith, B.D., T. A. Jefferson, D. Ho
Page 109 and 110: Yang, W.-C. 2000. Morbillivirus inf
Page 111 and 112: CHOU Lien-SiangDepartment o
Page 113 and 114: Brian D. SMITHWildlife Conservation
Page 115 and 116: APPENDIX 3Agenda1. Preliminaries2.
Page 117 and 118: Doc. 22 Dugong conservation activit
Page 119 and 120: AreaDatesSurveyTypeEffortSpeciesNo.
Page 125 and 126: Phase ofActionPlan
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[Small cetaceans are defined to inc
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f) recognizing that by-catch in fis
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130 CMS Technical Series Publicatio
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APPENDIX 9Abstracts of</str
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The (IUCN Critically Endangered) Du
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Status of
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Cetacean Habitats in the</s
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Conservation of <s
Page 143 and 144:
Summary of Current
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Indonesia’s Cetacean Migration Co
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Conservation Effort to Protect <str
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The Status of <str
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Can the Developing
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Status and Conservation of<
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Legal Hunting of C
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Indo-Pacific Bottlenose Dolphins (T
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Feasibility Study of</stron
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Songs of a Humpbac
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