Bulletin of the Shiretoko Museum 36: (2014) Sighting Records of Cetaceans and Sea Birds

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1 Bulletin of the Shiretoko Museum 36: (2014) Sighting Records of Cetaceans and Sea Birds in the Southern Okhotsk Sea, off Abashiri, Hokkaido UNI Yoshikazu1, KOYAMA Kana1, NAKAGUN Shotaro2 & MAEDA Mitsuhiko3 1. Tokyo University of Agriculture, 196 Yasaka, Abashiri, Hokkaido , Japan. unisan@m5.dion.ne.jp 2. Obihiro University of Agriculture and Veterinary Medicine, W2-11 Inada-chō, Obihiro, Hokkaido , Japan 3. Maeda Fishery Chipashir, N1E2 Abashiri, Hokkaido , Japan We carried out a vessel-based sighting survey with a whale watching boat in the southern Okhotsk Sea between late April and October, 2012 and 2013, off Abashiri, Hokkaido. Eight species in four families of cetaceans were recorded: Balaenoptera physalus, B. acutorostrata, Berardius bairdii, undescribed Ziphiidae sp., Orcinus orca, Lagenorhynchus obliquidens, Phocoenoides dalli, and Phocoena phocoena. A school of undescribed Ziphiidae was sighted in July, and several large schools of more than a hundred of L. obliquidens were observed frequently in August and September. The sighting rates per passage in 2012 of B. acutorostrata, L. obliquidens, and P. dalli were 38.5%, 19.2%, and 76.9% in July; 47.1%, 32.4%, and 88.2% in August; and 28.6%, 52.4%, and 33.3% in September, respectively. The sighting rates of the whole cetacean species were 88.5% in July, 94.1% in August, and 81.0% in September. The sighted sea birds in the seven objective families Gaviidae, Alcidae, Procellariidae, Hydrobatidae, Stercorariidae, and Phalaropodidae were 19 species, including rare birds in Japan, such as Phoebastria albatrus, Cepphus carbo, Lunda cirrhata, and Sterna aleutica ANC ANC Abashiri Nature Cruise m 5 t :30 14: :30 15:00

2 : 2: 3 3' : 4: 5: 6: Fig. 1. Cruise area (grey fan) and sighting locations of cetaceans and sea birds. 1: Ziphiidae sp. 2: Balaenoptera phsalus. 3 3' : B. acutorostrata. 4: Cepphus carbo. 5: Lunda cirrhata. 6: Phoebastria albatrus :30 13: km km km 37 km km ANC ANC ANC GPS D mm D mm GPS GP-1 WGS 84

3 ,000 GPS m ANC GPS ANC ANC ANC ANC Balaenoptera physalus B. acutorostrata Berardius bairdii undescribed Ziphiidae sp. Orcinus orca Lagenorhynchus obliquidens

4 Phocoenoides dalli Phocoena phocoena % 19.2% 76.9% % 32.4% 88.2% % 52.4% 33.3% % % % km 44 8' 17.26" N, ' 17.66" E 1-1 3, , :56 09: km 44 6' 2.01" N, ' 42.57" E 44 4' 13.28" N, ' 10.95" E Table 1. Sighting records of cetaceans off Abashiri, north-eastern Hokkaido in and monthly sighting probabilities per passage in Family name % Sighting rates per month Japanese name English name Scientific name 4 Apr. 5 May 6 June 7 July 8 Aug. 9 Sept. 10 Oct. Whole cetaceans Cetacea Balaenopteridae Fin whale Balaenoptera physalus + Mike whale Balaenoptera acutorostrata Ziphiidae Barid s beaked whale Berardius bairdii + unclassified beaked whale Ziphiidae sp. + Barid s beaked whale or Ziphiidae sp. + + Delphinidae Killer whale Orcinus orca + Pacific white-sided dilphin Lagenorhynchus obliquidens Phocoenidae Dall s porpoise Phocoenoides dalli Habour porpoise Phocoena phocoena occcurred.

33 21 25023 1509 20 09:06 09:47 41 3.7 km 21 11 27 12 09 42 4.

6 km 44 2' 47" N, 144 20' 21" E 2013 7 14 1-3 7.

acutorostrata. Sept. 2, 2012. 3 2012 7 7 1-1 Fig. 3. A school of unclassified Ziphiidaes sp.

5 :06 09: km km 2 ANC GPS 44 07' N, ' E km 44 2' 47" N, ' 21" E km 44 7' 9" N, ' 14" E ' GPS 44 08' N, ' E Fig. 2. A minke whale Balaenoptera. acutorostrata. Sept. 2, Fig. 3. A school of unclassified Ziphiidaes sp. They are likely to be the socalled Kurotsuchi [Black Baired s beaked whale] by small type whalers in Abashiri. July 7, photograph by NAGASHIMA Daiki. Fig Callorhinus ursinus Phoca largha Fig. 4. A leaping pacific whaite-sided dolphin Lagenorhynchus obliquidens. Aug. 27, 2012.

34 36 2014 5 5002012 8 27Fig. 5. A large school of pacific white-sided dolphins Lagenorhynchus obliquidens. About 500 dolphins, swimming from left to right. Aug. 27, 2012. 6 5.6 km 2013 7 14 1-3 Fig.

6 Fig. 5. A large school of pacific white-sided dolphins Lagenorhynchus obliquidens. About 500 dolphins, swimming from left to right. Aug. 27, km Fig. 6. A minke whale Balaenoptera. acutorostrata, 5.6 km off the mouth of Abashiri River. July 14, Fig Gavia pacifica Uria lomvia Cepphus carbo C. columba Cerorhinca monocerata Lunda cirrhata Fulmarus glacialis Puffinus griseus P. carneipes P. tenuirostris Phoebastria albatrus Oceanodroma furcata O. leunorhoa Stercorarius pomarinus Larus tridactylus Sterna aleutica S. hirundo Phalaropus lobatus P. fulicarius km 44 3' 36.23" N, ' 56.38" E km44 8' 44.82" N, ' 54.62" E

7 35 5Fig. 5. Continued , Table 2. Sea birds observed off Abashiri, northeastern Hokkaido in and sighting rates per month in Family name Sighting rates per month Japanese name English name Scientific name 4 Apr. 5 May 6 June 7 July 8 Aug. 9 Sept. 10 Oct. Gaviidae Pacific loon Gavia pacifica + Alcidae Thick-billed murre Uria lomvia + Spectacled guillemot Cepphus carbo + + Pigeon guillemot Cepphus columba + Rhinoceros auklet Cerorhinca monocerata Tufted puffin Lunda cirrhata + Procellariidae Northern fulmar Fulmarus glacialis Short-tailed Albatross Phoebastria albatrus + Sooty shearwater Puffinus griseus Flesh-footed shearwater Puffinus carneipes Short-tailed shearwater Puffinus tenuirostris Hydrobatidae Fork-tailed storm petrel Oceanodroma furcata Leach s storm petrel Oceanodroma leunorhoa + Stercorariidae Pomarine jager Stercorarius pomarinus Laridae Black-legged kittiwake Larus tridactylus + Aleutian tern Sterna aleutica + Common tern Sterna hirundo Phalaropodidae Northern phalarope Phalaropus lobatus Red phalarope Phalaropus fulicarius Sighting rate + rare, ++ common, +++ most time.

36 36 2014 7 2012 7 22 1-5 Fig. 7. An adults tufted puffin Lunda cirrhata. July 22, 2012. Fig. 1-5. 8

6 km 44 4' 31" N, 144 18' 49" E 1-6 8 1 2 1965 Hyperoodon ampullatus 2 4 6 9 10 9 10 4 6 1965 7.6 m 1965 1968 6 23 21 236.3 6.

8 Fig. 7. An adults tufted puffin Lunda cirrhata. July 22, Fig Fig. 8. A juvenile albatross Phoebastria albatrus. June 13, Fig km 44 4' 31" N, ' 49" E Hyperoodon ampullatus m m 1 Berardius bairdii marmam/?s=

9 km JARPN JARPN Fujise Fujise et al Fujise et al. 2000JARPN km

10 ANC e-shiretoko.com/hakkenritu htm

11 39 JARPN ANC Fujise Y Outline of the research activities of the Japanese Whale Research Progranm under Special Permit in the North Pacific ( JARPN) form 1994 to SC/F2K/J8. 30 pp. presented to the Workshop to Review the Japanese Whale Research Programme under Special Permit for North Pacific Minke Whales ( JARPN), February (unpublished, ) Fujise Y., Shimada H., Zenitani R., Goto M., Tamura T., Lindstrøm U., Uchjida A., Yoshida H., Shimamoto K., Yuzu S., Kasai H., Kinoshita T., Iwata T. and Tohyama D Cruise report of the Japanese Whale Research Program under a special permit in the North Pacific ( JARPN) in 1996 with some preliminary analyses of data collected durling the JARPN surveys. SC/49/NP8. 38 pp. presented to the IWC Scientific Committee, September (unpublished, icrwhale.org/pdf/sc-49-np8.pdf ) Fujise Y., Zenitani R., Tamura T., Banco T., Ohtani S., Takeda S., Kitajima A., Kimura T., Masaki T., and Tohyama D Cruise report of the Japanese Whale Research Program under a special permit in the North Pacific ( JARPN) in SC/F2K/J9. 32 pp. presented to the Workshop to Review the Japanese Whale Research Programme under Special Permit for North Pacific Minke Whales ( JARPN), February (unpublished, org/pdf/sc-f2k-j9.pdf ) : : : pp : : pp Lunda cirrhata Diomedeidae 3 30: Diomedea albatrus 29: : : :

12 pp pp

Bulletin of the Shiretoko Museum 30: 9 20 (2009) 1, 3 2, Present State of Sakhalin T

2002 2008 Bulletin of the Shiretoko Museum 30: 9 20 (2009) 1, 3 2, 3 3 3 1. 099-2493 196 2. 060-0810 10 5 3. 090-4113 49-2 Present State of Sakhalin Taimen Hucho perryi Population in Shari River Basin,