within the Pitcairn group <strong>report</strong>ed in Reeves et al.(1999) <strong>and</strong> referenced to unpublished data by S.Leatherwood as the source of this information. Spermwhale is also believed to historically occur within thisremote group of <strong>isl<strong>and</strong>s</strong> (Lever 1964). The geographicrange of humpback whales has recently been amendedto include the Pitcairn group (IUCN 2006) <strong>and</strong> theirpresence has been confirmed by sightings (G. Wragg,pers. comm.). Minke whales, Cuvier’s beaked whale <strong>and</strong>unidentified dolphins have been <strong>report</strong>ed in the regionbut are not documented (G. Wragg, pers. comm.).Scientific NameCommon NameBalaenoptera edeniPygmy Bryde’s whaleMegaptera novaeangliaeHumpback whaleGlobicephala macrorhynchusShort-finned pilot whaleGrampus griseusRisso’s dolphinLagenodelphis hoseiFraser’s dolphinOrcinus orcaOrcaPeponocephala electraMelon-headed whalePseudorca crassidensFalse killer whaleStenella coeruleoalbaStriped dolphinStenella longirostrisSpinner dolphinSteno bredanensisRough-toothed dolphinTursiops sp.Bottlenose dolphinKogia simaDwarf sperm whalePhyseter macrocephalusSperm whaleZiphius cavirostrisCuvier’s beaked whaleRecords of Cetaceans in the Waters of SamoaCitationSamoa Str<strong>and</strong>ing Database 2006 1Paterson 2001, Paton <strong>and</strong> Gibbs 2002, Noad et al. unpub. 1Paton <strong>and</strong> Gibbs 2002, Childerhouse 2005 1Samoa Str<strong>and</strong>ing Database 2006 1Samoa Str<strong>and</strong>ing Database 2006 1Miyashita et al. 1995 1Samoa Str<strong>and</strong>ing Database 2006 2Paton <strong>and</strong> Gibbs 2002, Noad et al. unpub. 1Samoa Str<strong>and</strong>ing Database 2006 1Paton <strong>and</strong> Gibbs 2002, Childerhouse 2005, Noad et al. unpub. 1SPWRC 2004, Childerhouse 2005 1Bourke <strong>and</strong> Powell 2003, UNEP-WCMC 2003, SPWRC 2004,Childerhouse 2005Olavarría et al. 2005, Samoa Str<strong>and</strong>ing Database 2006 1Townsend 1935, SPWRC 2004, Noad et al. unpub. 1Samoa Str<strong>and</strong>ing Database 2006 1Unconfirmed SpeciesClass1Balaenoptera sp., Minke whale (Kasamatsu et al. 1995 in Paton <strong>and</strong> Gibbs 2002)Mesoplodon sp., Beaked whale sp. (Olavarría et al. 2005)54 CURRENT STATE OF KNOWLEDGE OF CETACEAN THREATS, DIVERSITY, AND HABITATS IN THE PACIFIC ISLANDS REGION
16.SamoaL<strong>and</strong> Area (km 2 ): 2,935Sea Area (EEZ) (thous<strong>and</strong>s of km 2 ): 120The Independent State of Samoa is made up ofnine volcanic <strong>isl<strong>and</strong>s</strong>, two of which - Savai’i <strong>and</strong>Upolu - comprise a vast majority of the l<strong>and</strong> area.The Fisheries Department of Samoa holds manyrecords for species that have str<strong>and</strong>ed on their shores(Samoa Str<strong>and</strong>ing Database 2006). Current specimenrecords indicate the following have been str<strong>and</strong>ed<strong>and</strong>/or sighted in Samoan waters: Bryde’s whale,Risso’s dolphin, dwarf sperm whale, Fraser’s dolphin,melon-headed whale, striped dolphin, <strong>and</strong> Cuvier’sbeaked whale. Concentrations of orca have alsobeen recorded within the Samoan EEZ (Miyashitaet al. 1995). Japanese fishing vessels indicated thatminke whales were sighted in the Samoan region(Kasamatsu et al. 1995). Genetic samples were takenfrom rough-toothed dolphin, spinner dolphin, shortfinnedpilot whale, <strong>and</strong> common bottlenose dolphinsin Samoan waters (Childerhouse 2005). Humpbackwhales have also been studied during additional workin Samoan waters (SPWRC 2002, 2004), <strong>and</strong> acoustic<strong>and</strong> visual surveys conducted in these waters in 2001suggested the presence of humpback whale, spermwhale, false killer whale, <strong>and</strong> spinner dolphin (Noadet al. unpublished). This survey work also observedsome unidentified beaked whales that were tentativelybelieved to be Blainville’s beaked whales (Noad et al.unpublished, Bourke <strong>and</strong> Powell 2003). Other <strong>report</strong>ssuggest that pantropical spotted dolphins may occurwithin Samoan waters (Paton <strong>and</strong> Gibbs 2002).17.Solomon Isl<strong>and</strong>sL<strong>and</strong> Area (km 2 ): 28,370Sea Area (EEZ) (thous<strong>and</strong>s of km 2 ): 1,340This isl<strong>and</strong> country of the southwestern South PacificOcean includes the <strong>isl<strong>and</strong>s</strong> of Guadalcanal, Malaita,San Cristobal, Choiseul, Santa Isabel, <strong>and</strong> Rennell;the Russell, Florida, Shortl<strong>and</strong>, Santa Cruz, <strong>and</strong> NewGeorgia isl<strong>and</strong> groups; <strong>and</strong> small <strong>isl<strong>and</strong>s</strong> <strong>and</strong> reefs.A rapid ecological assessment of Solomon Isl<strong>and</strong>oceanic cetaceans <strong>and</strong> associated habitats tookplace during May <strong>and</strong> June of 2004 (Kahn 2004).Acoustic <strong>and</strong> visual surveys identified spinner dolphin,pantropical spotted dolphin, common bottlenosedolphins, Indo-Pacific bottlenose dolphin, orca, Risso’sdolphin, rough-toothed dolphin, short-finned pilotwhale, Mesoplodon beaked whale, Balaenopterasp. (tentatively indicated to be Bryde’s or Sei whale)<strong>and</strong> sperm whale. The certainty of this last record isalso further clouded by whether it may have been aSouth East Asian dwarf form of sperm whale. Severalunidentified beaked whales were also observed.Irrawaddy dolphin was also listed within the literaturereview of species occurring within the Solomon Isl<strong>and</strong>s(Hill 1989 in Kahn 2004).Anecdotal <strong>report</strong>s of possible blue whales (Kahn2004) are supported by Japanese sighting surveys(Ohsumi <strong>and</strong> Shigemune 1993 in Shimada <strong>and</strong>Pastene 1995) that encountered over 40 individualsin August 1957. Other mysticetes sighted within thewaters of the Solomon Isl<strong>and</strong>s include Bryde’s <strong>and</strong>sei whales (Miyazaki <strong>and</strong> Wada 1978, Ohsumi 1981).However, the B. borealis record is tentative as there isa possibility it may have been a misidentified Bryde’swhale (see Chapter 5 for more detail).Sperm whales have been recorded throughout theregion with the bulk of sightings being recordedduring the spring, summer <strong>and</strong> autumn (Berzin 1972,Shimada <strong>and</strong> Pastene 1995). Berzin (1972 in Reeveset al. 1999) <strong>report</strong>ed that Soviet ‘research whalers’saw groups of 100 - 200 sperm whales in the SolomonIsl<strong>and</strong> region during the Northern Hemisphere spring<strong>and</strong> summer periods of the 1960s.Most of the cetaceans taken in the Solomon drivefishery are <strong>report</strong>ed to be long-snouted oceanicforms, including spinner, pantropical spotted, striped,common (Delphinus delphis) <strong>and</strong> rough-tootheddolphins, along with false killer whales (Dawbin 1972,Takekawa 1996). Risso’s dolphins <strong>and</strong> melon-headedwhales have also been taken on occasion as havebottlenose dolphins (Takekawa 1996). In additionCURRENT STATE OF KNOWLEDGE OF CETACEAN THREATS, DIVERSITY, AND HABITATS IN THE PACIFIC ISLANDS REGION 55
- Page 1 and 2:
Current State of Knowledge ofCetace
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- Page 9 and 10: Executive SummaryThis report provid
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- Page 18 and 19: identified as marine and coastal ec
- Page 20 and 21: The distribution of Pacific Ocean t
- Page 22 and 23: ecent global survey of toxicity lev
- Page 24 and 25: and Orams 2005). Hector’s dolphin
- Page 26 and 27: pilot whale (4), sperm whale (2), s
- Page 28 and 29: al. 2003). In January 2004 a humpba
- Page 30 and 31: Stranded Cuvier’s beaked whale, A
- Page 32 and 33: Reeves et al. (1999) also refer to
- Page 34 and 35: “... the limited research efforts
- Page 36 and 37: were made to ensure that classifica
- Page 38 and 39: Scientific NameCommon NameBalaenopt
- Page 40 and 41: their presence in the region. Distr
- Page 42 and 43: Over the austral summer of 1998-199
- Page 44 and 45: 7. KiribatiLand Area (km 2 ): 811Se
- Page 46 and 47: Scientific NameCommon NameBalaenopt
- Page 48 and 49: Scientific NameCommon NameBalaenopt
- Page 50 and 51: Northern Marianas Islands (D. Johns
- Page 52 and 53: Scientific NameCommon NameBalaenopt
- Page 56 and 57: short-finned pilot whales have been
- Page 58 and 59: Scientific NameCommon NameBalaenopt
- Page 60 and 61: Scientific NameCommon NameMegaptera
- Page 62 and 63: Table 1American SamoaCook IslandsFe
- Page 64 and 65: “The diverse and expansive Pacifi
- Page 66 and 67: feeding occurs in summer to warmer,
- Page 68 and 69: ID: At sea identification between l
- Page 70 and 71: FAMILY PhocoenidaePhocoena dioptric
- Page 72 and 73: “... the subtleties and extent of
- Page 74 and 75: Palumbi. 1993. Abundant mitochondri
- Page 76 and 77: Coan, A. L., G. T. Sakagawa, D. Pre
- Page 78 and 79: Forestell, P.H. and G. D. Kaufman.
- Page 80 and 81: Halliday I., J. Ley, A. Tobin, R. G
- Page 82 and 83: grouping and population structure.
- Page 84 and 85: Moller, L. M. and R. G. Harcourt. 1
- Page 86 and 87: Paterson, R., P. Paterson and D. H.
- Page 88 and 89: Samuels, A., L. Bejder and S. Heinr
- Page 90 and 91: Trianni, M. S. and C. C. Kessler. 2
- Page 92 and 93: “The conservation status of amigr
- Page 94 and 95: TAXONVERNACULAR NAMESUBORDER ODONTO
- Page 96 and 97: taxon, threatened status may well b
- Page 98: WDCS CMS ProgrammeCoordinating Offi