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Resource ID
10719
Access
Open
Full Title
Cruise Report of the New Scientific Whale Research Program in the western North Pacific (NEWREP-NP) in 2018 - Pacific coastal component
Author
Isoda, T., Ito, N., Shimetani, K., Nakamura, G., Kumagai, S., Takahashi, M., Ogihara, M., Hirose, A., Kim, Y., Nishimura, F., Yamamoto, R., Watanabe, H., Koda, N., Yagi, G., Murata, H., Sazawa, R., Ogawa, M., Fukuyoshi, M., Hatanaka, T., Murono N., Takah
Abstract
The second survey of the NEWREP-NP Pacific coastal component was conducted in sub-areas 7CS and 7CN, which consisted of three surveys based in Ayukawa, Hachinohe and Kushiro ports. The survey in Ayukawa was conducted from 5 to 30 April 2018, using four small-type whaling catcher boats as sighting/sampling vessels. The survey in Hachinohe was conducted from 4 to 31 May 2018, using four small-type and one large-type whaling catcher boats as sighting/sampling vessels. The survey in Kushiro was conducted from 5 September to 4 October 2018, using five small-type whaling catcher boats as sighting/sampling vessels. Searching for common minke whales and sampling took place in coastal waters about 50 n.miles from Ayukawa, Hachinohe and Kushiro Ports. All common minke whales sampled were landed at the NEWREP-NP research stations established in Ayukawa, Hachinohe and Kushiro, where biological examination was conducted. During the survey in Ayukawa, a total of 27 primary sightings (27 individuals) of common minke whale were made during 3,366.3 n.miles of searching distance (337.2 hours). A total of 18 common minke whales (eight males and ten females) were sampled. The dominant prey species was sand lance (adult) and Japanese sardine. During the survey in Hachinohe, a total of 45 primary sightings (45 individuals) of common minke whale were made during 3875.0 n.miles of searching distance (439.9 hours). A total of 33 common minke whales (19 males and 14 females) were sampled. The dominant prey species was Japanese sardine and krill. During the survey in Kushiro, a total of 39 primary sightings (45 individuals) of common minke whale were made during 3,524.1 n.miles of searching distance (355.9 hours). A total of 29 common minke whales (22 males and 7 females) were sampled. The dominant prey species was Japanese sardine. In total 80 common minke whales were successfully collected attaining the planned annual target sample size in the Pacific. Biological samples and data required for Primary Objective I and Ancillary Objectives I and II of NEWREP-NP were obtained from all animals sampled.