著者

加野 泰男 小松 美英子 小黒 千足

出版者

日本動物分類学会

雑誌

動物分類学会誌 (ISSN:02870223)

巻号頁・発行日

vol.28, 1984

著者

井口 亮 水山 克 頼末 武史 藤田 喜久

出版者

日本動物分類学会

雑誌

タクサ:日本動物分類学会誌 (ISSN:13422367)

巻号頁・発行日

vol.46, pp.28-33, 2019

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<p>In the submarine caves of the Ryukyu Islands, the existence of many non-described species has been indicated in field surveys. To estimate the magnitude of biodiversity in the submarine caves, application of genetic analyses would provide a promising approach. Genetic analysis by DNA barcoding based on mitochondrial cytochrome c oxidase subunit I (COI) is informative for the study of submarine caves because the data of COI region have been accumulated in many marine animals. Also, in order to understand the formation process of communities of submarine caves, population genetic approaches would be useful to evaluate the connectivity patterns among submarine caves which are not continuously distributed along the Ryukyu Islands. In addition, utilization of high-throughput sequencing technology (e.g., environmental DNA (eDNA) analysis) would be also powerful for the ecological studies of submarine caves of the Ryukyu Islands. We discuss the current situation of genetic analyses in the submarine caves of the Ryukyu Islands and propose the prospects of genetic analyses for future studies.</p>

著者

福田 靖

出版者

日本動物分類学会

雑誌

動物分類学会誌 (ISSN:02870223)

巻号頁・発行日

no.24, 1982-12-25

著者

寺田 正之

出版者

日本動物分類学会

雑誌

動物分類学会誌 (ISSN:02870223)

巻号頁・発行日

no.31, pp.30-37, 1985-12-25

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オウギガニ科Xanthidae,オウギガニ亜科Xanthinaeに属するゴカクイボオウギガニの抱卵個体を三河湾水深30mの砂底からトロール網によって採集した.実験室において孵化したゾエアI期にはシオミズツボワムシを与えて飼育したところ,ゾエアII期までを得た.この両期幼生の全形と付属肢の形態を詳細に記載・図示するとともに,本種幼生をオウギガニ亜科やケブカガニ亜科Pilumninaeの幼生と比較した.ゴカクイボオウギガニの形態的特徴は,3種類の甲棘存在,A_3型の触角II,4・2-1の小顎I内肢毛式,3:2・3の小顎II内肢毛式,2:4の小顎II底節下葉毛式,腹節II-Vに側棘存在, A_<2+1>型の尾節などである.これらの特徴のなかで,特に触角II型と小顎II底節下葉毛式は,本種と他のオウギガニ亜科とを区別しうる部位である.しかし,これらの特徴はケブカガニ亜科幼生によく一致している.したがって,両形質から判断すれば,本種幼生はオウギガニ亜科幼生よりもケブカガニ亜科幼生に類似する.

著者

藤田 喜久

出版者

日本動物分類学会

雑誌

タクサ:日本動物分類学会誌 (ISSN:13422367)

巻号頁・発行日

vol.46, pp.3-12, 2019-02-28 (Released:2019-03-23)

参考文献数

42

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This paper provides a review of the past progress and future potential for research on the decapod crustacean fauna in submarine caves of the Ryukyu Islands. Until now, approximately 66 decapod crustacean species (shrimps, lobsters, and anomuran and brachyuran crabs) have been recorded from such caves at six islands in this chain, but recent surveys suggest that up to 100 species may be present. Many of them, however, appear to be accidental intruders or nocturnally emergent species, whereas “cavernicolous” species (animals that have characteristic morphological features such as reduced eyes and/or elongate thoracic limbs and spend their entire adult lives in the caves) are not so common. In addition, recent surveys have shown that the factors determining the distributional pattern of cavernicolous decapods among caves and their ecological partitioning within caves may be influenced by cave morphology and various aspects of the interior environment (light conditions, salinity, substratum, etc.). The urgency of preserving submarine cave environments in the Ryukyu Islands in the face of various threats is emphasized. In particular, 16 species of cavernicolous decapods found in submarine caves are already currently listed in the “Red List of Threatened Marine Species” issued by the Ministry of the Environment, Government of Japan.

著者

伊勢 優史

出版者

日本動物分類学会

雑誌

タクサ:日本動物分類学会誌 (ISSN:13422367)

巻号頁・発行日

vol.46, pp.13-17, 2019-02-28 (Released:2019-03-23)

参考文献数

21

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Submarine caves are widely known for their unique biodiversity and peculiar ecosystem. In the submarine caves around the Ryukyu Islands, sponges are the most abundant and diverse organisms. These sponges are considered to play an important role for the coral reef ecosystem in terms of supplying food resources to other organisms. An overview of the features of submarine cave sponge fauna especially at the “Akuma-no-Yakata” cave in Shimoji Island, Miyako Islands, Okinawa is presented herein. Sponges in “Akuma-no-Yakata” are roughly categorized into three types based on their distribution pattern inside the cave. The first category is sponges living around entrance of the cave, which are conspecific with species attached on underside of overhangs and interstices of coral reef. These species are considered as species just favoring cryptic habitats. The second category is sponges living around the mid part of the cave, some of which are closely related to species found in the deep-sea fauna. Lastly, the third category is sponges living in innermost part of the cave, which possibly have strong tolerance to low salinity water. The environment of second and third category is affected by fresh water infiltrated through calcareous ground of the island, and can be regarded as anchialine habitat, where the sponge fauna is very unique.

著者

下村 通誉

出版者

日本動物分類学会

雑誌

タクサ:日本動物分類学会誌 (ISSN:13422367)

巻号頁・発行日

vol.46, pp.18-21, 2019-02-28 (Released:2019-03-23)

参考文献数

25

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Recent taxonomic studies on Peracarida in submarine and anchialine caves of the Ryukyu Islands were reviewed. Peracarida is a large suborder of malacostracan crustaceans including more than 24,000 species known form marine, brackish, fresh water and terrestrial habitats. They are defined by the presence of a brood pouch. A total of 9 species, belonging to 7 genera of 7 families have been recorded in submarine and anchialine caves of the Ryukyu Islands.

著者

岡西 政典 藤田 喜久

出版者

日本動物分類学会

雑誌

タクサ:日本動物分類学会誌 (ISSN:13422367)

巻号頁・発行日

vol.46, pp.22-27, 2019-02-28 (Released:2019-03-23)

参考文献数

18

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Ophiuroidea is the largest class of echinoderms and can be found in a great variety of marine habitats such as: in interstices in sponges and hard corals; on muddy ground; infaunally buried in sediments; under rocks; and on the surfaces of various animals such as soft corals. Very few species, however, have been recorded from submarine caves and only one anchialine endemic species, Amphicutis stygobita Pomory, Carpenter & Winter, 2011 is known from Bernier Cave, Bahamas, and three undescribed species were inferred by molecular phylogenetic analysis based on the specimens collected from Mexico. During the course of benthic faunal surveys in three submarine caves of the Ryukyu Islands, southwestern Japan, at 2016 to 2018, 19 ophiuroid species in of 13 genera from 8 families were recorded.

著者

柁原 宏 高久 元 藤田 喜久 角井 敬知

出版者

日本動物分類学会

雑誌

タクサ:日本動物分類学会誌 (ISSN:13422367)

巻号頁・発行日

vol.46, pp.1-2, 2019-02-28 (Released:2019-03-23)

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Although the 2018 symposium of the Japanese Society of Systematic Zoology, entitled ‘Recent progress and future potential in faunal studies of the submarine caves in the Ryukyu Islands’ was scheduled to be held on the occasion of the 89th annual meeting of the Zoological Society of Japan in Hokkaido, it was unfortunately canceled due to the earthquake ‘2018 Hokkaido Eastern Iburi Earthquake’. However, the five interesting articles were given by the special invited authors: 1) Yoshihisa Fujita ‘The fauna of decapod crustaceans in submarine caves of the Ryukyu Islands, with special reference to environmental factors in the caves’, 2) Yuji Ise ‘Preliminary report of submarine cave sponges in Shimoji Island, Miyako Islands, Okinawa’, 3) Mitchitaka Shimomura ‘Review of recent taxonomic studies of peracarid crustaceans in submarine and anchialine caves of the Ryukyu Islands’, 4) Masanori Okanishi and Yoshihisa Fujita ‘Ophiuroids from submarine caves of the Ryukyu Islands, Japan’, and 5) Akira Iguchi, Masaru Mizuyama, Takefumi Yorisue and Yoshihisa Fujita ‘Current situation and future issues of DNA studies of submarine caves of the Ryukyu Islands’. In this paper, we introduce the purpose and the contents of this special issue.

著者

青木 淳一

出版者

日本動物分類学会

雑誌

動物分類学会誌 (ISSN:02870223)

巻号頁・発行日

vol.33, pp.55, 1986-07-25 (Released:2018-03-30)

著者

山崎 柄根

出版者

日本動物分類学会

雑誌

タクサ:日本動物分類学会誌 (ISSN:13422367)

巻号頁・発行日

vol.33, pp.1-3, 2012-08-20 (Released:2018-03-30)

著者

谷川 明男

出版者

日本動物分類学会

雑誌

タクサ:日本動物分類学会誌 (ISSN:13422367)

巻号頁・発行日

vol.20, pp.23-25, 2006-02-20 (Released:2018-03-30)

参考文献数

17

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About 130 years has passed since L. Koch (1878) published the first paper on Japanese spiders. Today there are still many undescribed species in Japan. Based on papers published in the journal of the Arachnological Society of Japan during the last five years, three professional and six amateur researchers are now actively studying the taxonomy of Japanese spiders. Most of their publications are descriptive studies, e.g. description of new species, revision of a genus or a family. Phylogenetic analyses using morphological or molecular data have been published for many countries, but not for Japan. It is becoming increasingly urgent to foster young spider taxonomists. The traditional approach in taxonomy seems to be arbitrary and therefore not attractive for young researchers. Japanese leading taxonomists should adopt modern methods such as phylogenetic analyses in order to attract young successors.

著者

和田 洋 松原 未央子 晴山 健史

出版者

日本動物分類学会

雑誌

タクサ:日本動物分類学会誌 (ISSN:13422367)

巻号頁・発行日

vol.22, pp.72-79, 2007-02-20 (Released:2018-03-30)

参考文献数

20

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Two types of larval morphology are recognized in extant echinoderms, namely auricularia-type larvae for starfish, sea cucumbers and sea lilies, and pluteus-type larvae for sea urchins and brittle stars. Since sister-grouping of the sea urchins and the sea cucumbers is supported by both fossil evidence and molecular data, the pluteus-type larvae are regarded to have evolved convergently in the sea urchins and the brittle stars. This paper briefly reviews recent progress in our work on comparative molecular developmental studies in the echinoderms. We investigated expressions and function of developmental genes, which are essential for sea urchin larval skeletogenesis, in the starfish and brittle stars. Based on expression data, we infer how the larval skeleton evolved in the sea urchins and brittle stars.

著者

森谷 清樹

出版者

日本動物分類学会

雑誌

動物分類学会誌 (ISSN:02870223)

巻号頁・発行日

vol.51, pp.77-78, 1994-07-25 (Released:2018-03-30)

著者

織田 秀実

出版者

日本動物分類学会

雑誌

タクサ:日本動物分類学会誌 (ISSN:13422367)

巻号頁・発行日

vol.10, pp.3-7, 2001-02-20 (Released:2018-03-30)

参考文献数

22

著者

高島 義和

出版者

日本動物分類学会

雑誌

タクサ:日本動物分類学会誌 (ISSN:13422367)

巻号頁・発行日

vol.24, pp.17-22, 2008-02-20 (Released:2018-03-30)

参考文献数

5

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Difficulties of identification by using illustrated book and dichotomous key, and problems of tabulating identified taxa are discussed. In many cases, information about diagnoses which discriminate a species from its relatives is not provided well in illustrated books. In dichotomous keys, on the other hand, discriminating characters are summarized tersely for each species but diagnostic characters tend to be subtle and judgment of them are often puzzling for beginner taxonomists. Use of matrix (or tabular) key, which avoid these difficulties, is recom mended. In the case that identification of a specimen does not reach species level, it is placed in a higher taxonomic group, which may contain various entities. Annotations for higher taxa may reduce problems caused by heteroge neity of higher groups.

著者

磯野 直秀

出版者

日本動物分類学会

雑誌

タクサ:日本動物分類学会誌 (ISSN:13422367)

巻号頁・発行日

vol.7, pp.6-9, 1999-08-20 (Released:2018-03-30)

著者

久保田 信

出版者

日本動物分類学会

雑誌

タクサ:日本動物分類学会誌 (ISSN:13422367)

巻号頁・発行日

vol.44, pp.69-70, 2018-02-28 (Released:2018-03-20)

著者

Tomikawa Ko Morino Hiroshi Ohtsuka Susumu

出版者

日本動物分類学会

雑誌

Species diversity : an international journal for taxonomy, systematics, speciation, biogeography, and life history research of animals (ISSN:13421670)

巻号頁・発行日

vol.13, no.4, pp.275-286, 2008-12-30

参考文献数

13

被引用文献数

2

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Pseudocrangonyx shikokunis Akatsuka and Komai, 1922, a poorly known subterranean amphipod, is redescribed and illustrated in detail based on the syntypes from Tokushima Prefecture and four additional specimens from Hyogo Prefecture, Japan. Newly found diagnostic features and morphological variation of the species are discussed.

著者

芳賀 和夫 岡島 秀治

出版者

日本動物分類学会

雑誌

動物分類学会誌 (ISSN:02870223)

巻号頁・発行日

no.40, pp.p49-54, 1989-12

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本州中部の亜高山帯,高山帯にのみ分布するユリ科植物,キヌガサソウの葉裏に生息する穿孔亜目のアザミウマを新種としてCtenothrips nonnaeの名を付して記載した.観察できた標本はすべて翅がきわめて短い小翅型であった.なお,本属は日本で初めてのものである.