著者

Masamitsu IWATA Yoshitaka YABUMOTO Toshiro SARUWATARI Shinya YAMAUCHI Kenichi FUJII Rintaro ISHII Toshiaki MORI Frensly D. HUKOM DIRHAMSYAH Teguh PERISTIWADY Augy SYAHAILATUA Kawilarang W. A. MASENGI Ixchel F. MANDAGI Fransisco PANGALILA Yoshitaka ABE

出版者

Kitakyushu Museum of Natural History and Human History

雑誌

北九州市立自然史・歴史博物館研究報告A類(自然史) (ISSN:13482653)

巻号頁・発行日

vol.17, pp.57-65, 2019-03-31 (Released:2020-09-15)

参考文献数

16

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The juvenile of Indonesian coelacanth, Latimeria menadoensis is here described for the first time in detail with comparison to embryos of Latimeria chalumnae. The juvenile was found in free swimming at 164.6 m depth off Manado, Indonesia on the 6th October in 2009. Because the total length of the juvenile is 31.5 cm, which is smaller than the embryos of L. chalumnae, it is speculated that not much time has passed from its birth. The depth at which the juvenile was found is within the range of the depth where adult L. menadoensis were observed, hidden in a narrow and long overhang where large predators could not enter. The juvenile has a more slender body, smaller orbit, shorter and deeper posterior part of the body (caudal peduncle) between the second dorsal and the anal fins and anterior ends of the dorsal and ventral lobes of the caudal fin (the third dorsal and second anal fins), longer dorsal and ventral lobes of the caudal fin (the third dorsal and second anal fins), broader peduncles of broader lobed fins, larger first dorsal fin and longer supplementary lobe of the caudal fin (caudal fin) than embryos of L. chalumnae. This indicates clear differences in the first ontogenetic stages of the two species, although adults have almost the same morphological features. Latimeria menadoensis appears to reproduce in a rather confined area, because both the juvenile and adults have been found within the same area inside of Manado Bay.

著者

Yoshiaki Kai Koji Matsuzaki Toshiaki Mori

出版者

The Japanese Society of Systematic Zoology

雑誌

Species Diversity (ISSN:13421670)

巻号頁・発行日

vol.24, no.2, pp.115-118, 2019-07-25 (Released:2019-07-25)

参考文献数

19

被引用文献数

4

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Four specimens (168.6–204.4 mm standard length) of Careproctus lycopersicus Orr, 2012, previously recorded from the Bering Sea and eastern Aleutian Islands, were collected from the southern Sea of Okhotsk (the Nemuro Strait, eastern Hokkaido, Japan). These specimens represent the first records of the species from the western North Pacific. A detailed description is provided for the specimens, including the intraspecific variations. The new standard Japanese name “Tomato-kon’nyaku-uo” is proposed for the species.