- 著者
- Tomohiro Kita Kazuki Matsushige Shunsuke Endo Noritaka Mochioka Katsunori Tachihara
- 出版者
- The Japanese Society of Systematic Zoology
- 雑誌
- Species Diversity (ISSN:13421670)
- 巻号頁・発行日
- vol.26, no.1, pp.31-36, 2021-03-05 (Released:2021-03-05)
- 参考文献数
- 25
- 被引用文献数
- 1
Six specimens of Anguilla luzonensis Watanabe, Aoyama, and Tsukamoto, 2009 were collected from Okinawa-jima Island, Okinawa Prefecture, southern Japan. This species was previously known from Luzon Island, Mindanao Island and Taiwan. Therefore, the present specimens represent the first records of A. luzonensis from Japan and extend the northern distribution limit of the species. A new standard Japanese name, “Uguma-unagi”, is proposed for the species.
- 著者
- Taiga Kunishima Herminie P. Palla Katsunori Tachihara Ken Maeda
- 出版者
- The Japanese Society of Systematic Zoology
- 雑誌
- Species Diversity (ISSN:13421670)
- 巻号頁・発行日
- vol.27, no.1, pp.129-138, 2022-04-15 (Released:2022-04-15)
- 参考文献数
- 48
- 被引用文献数
- 1
Twenty specimens of Acentrogobius ocyurus (Jordan and Seale, 1907) were collected in Manko, Okinawa-jima Island, Japan and Sulu Sea side of Puerto Princesa City, Palawan Island, Philippines. As the species had previously been reported from the South China Sea, Andaman Sea, and northern Australian waters, these specimens from Okinawa and Palawan represent the first records of the species from Japan and the Sulu Sea. Acentrogobius ocyurus was found on muddy substrata at the lowest tidal zone of the mudflat and was often found in burrows of mangrove pistol shrimp, Alpheus richardsoni Yaldwyn, 1971. Morphological traits suggested that A. ocyurus is closely related to A. globiceps (Hora, 1923), A. kranjiensis (Herre, 1940), and Acentrogobius sp. (“Suzume-haze” in Japanese name), with several homologous features including, the transverse pattern of the sensory papillae on the cheek, caudal fin pointed in middle, a black stripe behind the eye along the anterior oculoscapular canal, bright blue spots laterally on the body, and an oblique yellow stripe across the upper part of the caudal fin.
- 著者
- Taiga Kunishima Katsunori Tachihara
- 出版者
- The Plankton Society of Japan, The Japanese Association of Benthology
- 雑誌
- Plankton and Benthos Research (ISSN:18808247)
- 巻号頁・発行日
- vol.13, no.1, pp.21-24, 2018-02-28 (Released:2018-03-14)
- 参考文献数
- 11
- 被引用文献数
- 2 2
Accurately determining the species richness and/or abundance using quantitative sampling methods is important for understanding community structures. The quadrat method has been one of the most commonly used quantitative methods for estimating benthic animals in tidal flats. However, it is difficult to implement this method in biodiversity surveys of benthic fishes, as they can move across the quadrat, thus altering the observations. In the present study, we introduced the quantitative sampling method for benthic fishes in tide-pools located in tidal flats by employing an improved quadrat with a net and sinkers. This setup prevented the movement of fishes across quadrats, unlike the conventional quadrat method which allowed the easy movement of fishes. This improved quadrat method can be useful in surveying fish biodiversity in tide-pools in a wide range of tidal flats. The potential advantages of this method include 1) determining the accurate biodiversity of fishes in a tidal flat tide-pool, 2) easily comparing the biodiversity per unit area among multi-sampling sites, and 3) easily increasing the number of quadrats in field surveys. We believe that our improved quadrat method will simplify and promote the study of fishes in tidal flats.