著者

小松 美英子

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.27, pp.1-16, 2009-08-20 (Released:2018-03-30)

参考文献数

123

---

Echinoderms display a great range of life histories, which my students, colleagues, and I have documented though our studies of 42 species, including one echinoid, one holothuroid, four ophiuroids, and 36 asteroids. Here, the general features of echinoderm reproduction are reviewed as they concern the following topics: pairing behavior, brooding, sexual dimorphism, dioecism/hermaphroditism, and others. Larval form in these echinoderms has been modified in various ways through adaptation to planktonic, benthic, intra-gonadal, or intra-gastric larval habitats. The elucidation by Kanatani of the hormonal control mechanism of reproduction in asteroids has provided a means to investigate various aspects of their life history in detail, especially in the genera Asterina, Astropecten, and Luidia. We have found asteroids that pass through a wrinkled blastula stage, divergences among species of Asterina and Astropectinidae, astropectinid sea stars with a newly discovered barrel-shaped larva, and the limits of occurrence of the non-brachiolarian type of development in the Astropectinidae and Luidiidae. The life history of astropectinid species, including both a bipinnaria and a barrel-shaped larva, differs from that of luiidiids, with only a bipinnaria. On this basis, we suggest that the Astropectinidae and Luidiidae probably do not belong to the same ordinal-level taxonomic group. This result agrees with the 18S rDNA-based asteroid phylogeny previously reported by Matsubara and us.

著者

大塚 攻 田中 隼人

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.48, pp.49-62, 2020

---

<p>One of the major crustacean groups, Maxillopoda had accommodated Mystacocarida, Copepoda, Thecostraca, Tantulocarida, Ostracoda, Branchiura, Pentastomida, and some fossil taxa, and was generally defined by some combinations of the following characters: body tagma composed of 5 cephalic, 6 (or 7) thoracic and 5 (or 4) abdominal somites; male gonopore (s) located on the first abdominal somite; uniramous antennules; naupliar eyes with tapetal cells, and so on. However, the monophyly of maxillopodans is totally rejected by a number of genetic analyses, while palaeontological and morphological approaches still recognize not only maxillopodans but also entomostracans as valid taxa. Since this issue is not well documented in Japan, the present paper briefly introduces modern phylogenetic studies on maxillopodan crustaceans, in particular Copepoda and Ostracoda.</p>

著者

古屋 秀隆 Lu C.C. Hochberg F.G.

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

no.9, pp.41-42, 2000-08-20

著者

小林 麻理 佐藤 矩行 古屋 秀隆 Holland Peter W.H.

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

no.9, 2000-08-20

著者

古屋 秀隆

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.48, pp.3-12, 2020

---

<p>Dicyemids (phylum Dicyemida) are endosymbionts that typically are found in the renal sac of benthic cephalopod molluscs. The dicyemid bodies consist of only 8 to 40 cells, which are the fewest in number of cells in metazoans, and are organized very simply. Typically, two or three dicyemid species are found in a single specimen of the host, and most of them show high host specificity. Dicyemid species have been examined in the benthic cephalopods collected from the Kumano Sea at a seafloor depth of 150–400 m using bottom trawl nets since 2013. Twenty-five undescribed species of dicyemids, included in five genera, were found in 15 species of cephalopods. There is a considerable diversity of dicyemids in relatively narrow range of localities of the Kumano Sea. Here current taxonomic studies on dicyemid fauna in the Kumano Sea are briefly reported.</p>

著者

古屋 秀隆

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

no.13, 2002-08-20

著者

古屋 秀隆

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

no.21, pp.19-32, 2006-08-20

---

Dicyemid mesozoans (phylum Dicyemida) are endoparasites that are typically found in the renal sac of benthic cephalopod molluscs. Dicyemid bodies are very simply organized, consisting of only 8 to 40 cells, which is the fewest number of cells in metazoans. The current paper gives an overview of the morphology of dicyemids and reviews current status of the taxonomy of dicyemids. The renal sac of cephalopods is a unique environment providing habitat for a diversity of dicyemids. The current paper also reviews recent advances in several biological aspects, such as prevalence, zoogeography, and host specificity. The degree of host specificity differs among different species of dicyemids, although the recent study reveals narrow host specificity. Most previous descriptions were based on the character of vermiform stages, and several species seem to be incorrectly identified. The current study suggests that the cellular composition and cell types of infusoriform embryos are significant characters used to help identify dicyemids species. In addition, the type host specimen for a new species of parasite is briefly discussed The accurate identification of a host organism is an important component in the taxonomic recognition of a new species of parasite.

著者

嶋津 武

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, 1994

著者

Motomura Hiroyuki Kimura Seishi Haraguchi Yuriko

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.12, no.4, pp.223-235, 2007-12-31

---

Catches of two carangid fishes (Perciformes), Caranx heberi (Bennett, 1830) (two specimens: 251.5-260.0 mm fork length) and Ulua mentalis (Cuvier, 1833) (nine specimens: 203.6-244.0 mm), off Kasasa on the East China Sea side of Kagoshima Prefecture, Kyushu, Japan, represent the northernmost records of these Indo-West Pacific species. Caranx heberi has not previously been recorded north of the equator in the western Pacific, and the northernmost record of U. mentalis has been Taiwan. The Kagoshima specimens are described in detail and their biogeographic implications are discussed.

著者

Grygier Mark J. Olesen Jorgen

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.9, 2000

著者

松浦 啓一

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

no.23, pp.80-89, 1982-06-25

---

文部省科学研究費補助金による海外学術調査が,昭和55年6月8日から7月20日まで,パラオ諸島とヤップ諸島で行われた.筆者は魚類相の調査を担当した。得られた魚類は,34科85属148種に分類された.このうちガーデンイールの1種チンアナゴが,当該海域から初めて発見された.また,モンガラカワハギ科のキヘリモンガラの産卵床と卵が,バベルダオブ島の西岸で発見され,親が卵を保護することが確認された.

著者

朝倉 彰

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

no.21, pp.33-39, 2006-08-20

---

In 1997, Masatsugu Takano and the applied population genetics research group at Tohoku University published a ground-breaking paper on biochemical and morphological evidence indicated that there were two sympatric forms, interpreted as sibling species, of the common crab Hemigrapsus penicillatus (De Haan). This species is very common in intertidal rocky shores, pebble beaches and mud flats in Japan, Korea and China, but prior to Takano et al., no one had noticed that the species comprised two different forms. A recent intensive study by Prof. Seiichi Watanabe, Tokyo University of Marine Science and Technology, and his research group revealed further differences between the two forms, including coloration, allometry, egg size and number, and geographical distribution. Watanabe and myself recognized these as two distinct species and described one of them as a new species Hemigrapsus takanoi in 2005.

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.6, pp.14-18, 1999-02-15 (Released:2018-03-30)

参考文献数

3

著者

岩坪 洸樹 本村 浩之

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.37, pp.21-27, 2014-08-28 (Released:2018-03-30)

---

Some species of damselfishes (Pomacentridae) have a bright blue body color. The body surface of these species has scattered iridophores, which induce changes in their blue coloration. The blue color is readily converted to blackish color during formalin fixation of fresh specimens, making it difficult to take photographs of specimens of bluish damselfishes representing live coloration. In this study, an innovative method for restoring the blue coloration in formalin fixed specimens of bluish damselfishes is described. Chromatophore conditions before and after the blue coloration restoration are also illustrated. In addition, a glycerol penetration method to preserve the blue coloration of glycerin immersion preserved specimens are discussed.

出版者

日本動物分類学会

雑誌

動物分類学会会務報告 (ISSN:21897263)

巻号頁・発行日

vol.17, pp.7-10, 1958-02-25 (Released:2018-03-30)

著者

今立 源太良

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.42-50, 1994

---

本州北部および北海道で採集されたカマアシムシ属の2新種を記載した.これらは宮城県東北部でえられたワタナベカマアシムシ,アラスカから見出された2種,Eosentomon alaskaense, E. copelandiと近縁であるが,前肢付節の感覚毛の形状,体毛の配列などに特異な点があるので,新種とみとめ,ジュンカマアシムシ(新称,大西純氏に献名),コンセン(根釧)カマアシムシ(新称)と名づけた.

著者

広崎 芳次 本田 正彦 瀬崎 啓次郎 絹田 俊和

出版者

日本動物分類学会

雑誌

動物分類学会会報 (ISSN:21897271)

巻号頁・発行日

vol.54, pp.14, 1981-10-31 (Released:2018-03-30)

著者

斉藤 知己

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.33-46, 2008-02-20 (Released:2018-03-30)

参考文献数

34

---

An overview of the taxonomy of the stenopodidean shrimp family, Spongicolidae Schram, 1986 (Crustacea: De capoda) is provided. The family contains 34 described species of 6 genera: Globospongicola Komai and Saito, 2006, Microprosthema Stimpson, 1860, Paraspongicola de Saint Laurent and Cleva, 1981, Spongicola de Haan, 1844, Spongicoloides Hansen, 1908 and Spongiocaris Bruce and Baba, 1973. Only Microprosthema comprises free-living species in shallow rocky reefs, while shrimps of the other genera are primarily obligate symbionts of deep-water hexactinellid sponges, living in the atrium of hosts. Some of recent taxonomic studies are presented here. Larval development and geographic and bathymetric distributions of species are briefly discussed. The phylogenetic study clarified Microprosthema as the most basal genus, and Spongicoloides and Spongiocaris as the most derived genera among spongicolids. Decrease in number of gills and that of exopods on the second and third maxillipeds, and the loss of spiniation on carapace, pereopods and abdomen in the spongicolids (except for Microprosthema) were considered secondarily derived in relation to their sponge-associated habitat.

著者

菊池 泰二 ユン スンギュ

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.45, 1991-12-25

著者

岡西 政典

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.40, pp.17-21, 2016-02-29 (Released:2018-03-30)

---

Paleontologists have long reconstructed phylogeny using comparisons between fossil record and recent taxa. On the other hand, biologists reconstruct phylogeny using molecules to produce a tree which they constrain using fossils and geographic events to provide estimates for phylogenetic events. Taking both extant and extinct species into account for systematic revisions is essential for biologists and paleontologists. In this paper, I demonstrate example of how paleontological methods, such as preparing thin sections and using x-ray and CT scans can also be applied to extant invertebrates. I provide further discussion of how robust integration between paleontologists and biologists is rewarding to both disciplines.