著者

富川 光 森野 浩

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.32, pp.39-51, 2012-02-20 (Released:2018-03-30)

参考文献数

49

---

Amphipods (Crustacea) are most diverse in marine environment but not a few species occur in freshwaters. To date, 36 species of freshwater amphipod taxa have been recorded from Japan. However, there are no taxonomical reviews of Japanese freshwater amphipods. In this paper, Japanese name, scientific name, major feature, and distribution for all species of Japanese freshwater amphipods are marshalled. In addition, a key to species is provided for identification of freshwater amphipods in Japan. Figures provided with this key indicate features of taxonomic importance. We proposed the new Japanese names for the following family/genera/species in this paper: families Luciobliviidae and Bogidiellidae, genera Octopupilla, Lucioblivio and Bogidiella, and species Octopupilla felix, Lucioblivio kozaensis and Bogidiella broodbakkeri.

著者

藤田 敏彦

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.45, pp.4-15, 2018-08-31 (Released:2018-08-31)

参考文献数

47

---

The Echinodermata is, in terms of species, one of the largest of animal phyla. They are distributed exclusively and widely in the marine environment, where they occupy important biological and environmental roles. Despite their relevance, relatively few scientists have studied echinoderms in Japan. I have comprehensively surveyed the echinoderm fauna of Japan and adjacent regions, and have discovered diverse and intriguing taxa. My research on these species has utilized diverse approaches, including taxonomy, phylogeny, ecology, morphology and paleontology. I have also initiated educational and outreach activities intended to encourage the study of echinoderm biology and natural history, including an annual scientific meeting emphasizing echinoderm research in Japan. Thanks to collaboration with students in my laboratory, scientific colleagues and “citizen scientists” including fans of echinoderms, we have seen a significant increase in Japanese echinoderm research.

著者

小松 貴

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.39-51, 2018-02-28 (Released:2018-03-20)

参考文献数

78

---

There are many rock grike of various sizes under the ground. Recent studies have revealed that the grike is habitat for troglobiontic organisms that are extremely specialized to live within it. In this paper, focused on troglobiontic arthropods in Japan, the diversity of the species is discussed, together with a threat to their survival.

著者

波々伯部 夏美

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.53, pp.19-30, 2022-08-31 (Released:2022-08-31)

参考文献数

105

---

Nemertea is one of the spiralian phyla, consisting of about 1350 species from all over the world. Nemerteans are commonly known as ribbon worms, occurring in a wide variety of marine, freshwater, and terrestrial ecosystems. Although about 100 species of nemerteans have been reported from Japan, recent studies in limited areas involving molecular phylogenetic techniques have uncovered high species diversity in the area, suggesting that there are a significant number of yet-to-be-discovered species in the entire Japanese waters. In this paper, I present a step-by-step introduction to collection, observation, and identification of nemerteans principally for systematic studies. In addition, the present paper briefly reviews recent progress in molecular phylogeny and systematics in the Nemertea.

著者

矢﨑 裕規 島野 智之

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.48, pp.71-83, 2020-02-29 (Released:2020-03-13)

参考文献数

55

---

A new revision of the higher taxonomic classification of eukaryotes was published in 2019 in the journal of the International Society of Protistologists, Journal of Eukaryotic Microbiology. In the seven years since the last revision made in 2012, the large-scale multigene phylogenetic analyses in the background of the recent advancement of sequencing technology have revealed the affiliation of many “orphan” lineages and taxa. The major changes in this revision are the following four points: i) Excavata is not adopted to be a clade, ii) CRuMs as an assembly of Collodictyonida, Rigifilida, and Mantamonas is adopted to be a clade as the relatives of Amorphea, iii) Haptista consisted of Haptophyta and Centrohelida is adopted as a new clade, and iv) Crypista is also adopted as a new clade.

著者

田中 颯 生野 賢司

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.45, pp.28-32, 2018-08-31 (Released:2018-08-31)

参考文献数

32

---

This paper summarizes the previous amendments of the 4th edition of the International Code of Zoological Nomenclature and presents the Japanese version of the latest provisional amendment and the explanatory note published by the International Commission on Zoological Nomenclature in March 2017. In the latest provisional amendment, four recommendations were added to Article 73 and one term, “specimen, preserved”, was added to the Glossary concerning the establishment of a new species-group taxon without a preserved name-bearing type. Additionally, we review the background of this provisional amendment. All zoologists should pay careful attention to this amendment in order to advance zoological sciences and their reproducibility.

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, 2020-02-29 (Released:2020-03-13)

参考文献数

87

被引用文献数

2

---

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.

著者

Etsuro Sawai Yusuke Yamanoue Laith Jawad Juma Al-Mamry Yoichi Sakai

出版者

日本動物分類学会

雑誌

Species Diversity (ISSN:13421670)

巻号頁・発行日

vol.22, no.1, pp.99-104, 2017-05-25 (Released:2017-05-25)

参考文献数

20

被引用文献数

7

---

We employed molecular systematic analysis based on mitochondrial D-loop sequences to identify two specimens of ocean sunfish from Omani coastal waters that had previously been identified morphologically as Mola mola (Linnaeus, 1758) and M. ramsayi (Giglioli, 1883). Of the three molecular species that are recognized globally, Mola sp. A, Mola sp. B, and Mola sp. C, we confirmed that both specimens from Oman are Mola sp. A. This result suggested a broader distribution of this species than had ever been thought, but it also revealed a discrepancy between morphological and genetic characters in Mola taxonomy. We reexamined the morphology of the two specimens from Oman to clarify the extent to which the key morphological features correspond with molecular genetic identifications, and discovered errors in the original reports on both specimens.

著者

脇 司 島野 智之

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.54, pp.3-10, 2023-02-28 (Released:2023-03-07)

参考文献数

23

---

The genus Riccardoella Berlese, 1923 (Ereynetidae Oudemans, 1931) consists of eight species, and six of the eight species were reported and described from the lungs of terrestrial mollusks, and the remaining two were from soils. In Japan, three of the eight species have widely been reported from terrestrial mollusks. In this manuscript, we introduce species identification based on morphology, distribution, and hosts of these three Japanese mite species. Sampling methods, preparations of slide specimens and virulence of these mites were also added.

著者

自見 直人

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.55, pp.1-8, 2023-08-31 (Released:2023-09-08)

参考文献数

41

---

Polychaetes represent an immensely diverse taxonomic assemblage, encompassing approximately 12,000 species across 92 families. These organisms have a broad range of habitats, from the Arctic to the Antarctic, and spanning terrestrial environments to the hadal depths of the oceans. Polychaetes are one of the most prevalent taxonomic groups in ecological studies, both in terms of biomass and species richness. Consequently, taxonomic research on polychaetes is pivotal as it forms the foundational basis for various studies. This paper aims to provide an overview of the taxonomy of polychaetes and the research conducted within Japan and to deliberate on the research objectives that warrant further exploration.

著者

菊地 波輝 石田 孝英 鹿児島 浩 江口 克之

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.50, pp.23-24, 2021-02-28 (Released:2021-02-28)

参考文献数

11

著者

疋田 努

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.47, pp.1-9, 2019-08-31 (Released:2019-09-12)

参考文献数

30

---

In the studies of reptiles, I started the study of phylogeny and biogeography of the scincid genus, Plestiodon (formerly Eumeces) in the East Asian Islands by cladistic analysis and neighbor joining method based on morphological data. Then our laboratory has continued to study this group genetically using allozymes and DNA data. We revealed the process of the speciation of the genus in Japanese and Ryukyu Archipelagos. During the studying this group, we described five cryptic species. While studying the taxonomy and phylogeny of reptiles, I found that the cladistic taxonomy has several problems. I proposed the gradistic classification system showing cladistic relationship by putting a tag of the descendant grade within the ancestral grade.

著者

Yusuke Yamana Hayato Tanaka Shu Nakachi

出版者

日本動物分類学会

雑誌

Species Diversity (ISSN:13421670)

巻号頁・発行日

vol.22, no.1, pp.53-68, 2017-05-25 (Released:2017-05-25)

参考文献数

32

被引用文献数

3

---

Three new sea cucumbers collected in the intertidal and subtidal zone of southern Japan, Taeniogyrus mijim sp. nov., Rowedota chippiru sp. nov., and R. motoshimaensis sp. nov., are described. All three species display a small body size (approximately 10–20 mm), light body colour (primarily a transparent solid colour), and a small number of digits in their tentacles (one pair or two). They are easily distinguished from each other and from other congeners by the number of digits and by ossicle size and shape. Among these species, the state of the tooth series on the inner margin of the wheel ossicles is an important defining feature, i.e., a continuous row in Taeniogyrus but interrupted by concavities in Rowedota. Also, each tooth is sharp in T. mijim, trapezoidal in R. chippiru, and semicircular in R. motoshimaensis. The number of teeth per radiant is 7–16 (means of 10–13 in different specimens) in T. mijim, 7–15 (means 9–12) in R. chippiru, and 8–21 (means 11–19) in R. motoshimaensis. Among these three new species, only R. chippiru has thick rod ossicles in the body wall.

著者

山崎 博史 藤本 心太 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.46, pp.40-53, 2019-02-28 (Released:2019-03-23)

参考文献数

80

被引用文献数

2

---

Meiobenthos is a term usually referring to microscopic benthic organisms which pass through a 1 mm mesh sieve and are retained on a 32–63 μm one. Meiobenthos occurs in any aquatic environment, shows high species diversity as well as high biomass, and often plays an important role in ecological and evolutionary studies. However, the species diversity of these animals in Japanese waters has been insufficiently investigated. Here we review several methodologies for collecting extant meiobenthos from the marine environment, including the method for sampling sediments in various environments, extracting meiobenthos from the sediment samples, and some tips for sorting, fixation, and observation of them.

著者

富川 光 森野 浩

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.32, pp.39-51, 2012

参考文献数

49

---

Amphipods (Crustacea) are most diverse in marine environment but not a few species occur in freshwaters. To date, 36 species of freshwater amphipod taxa have been recorded from Japan. However, there are no taxonomical reviews of Japanese freshwater amphipods. In this paper, Japanese name, scientific name, major feature, and distribution for all species of Japanese freshwater amphipods are marshalled. In addition, a key to species is provided for identification of freshwater amphipods in Japan. Figures provided with this key indicate features of taxonomic importance. We proposed the new Japanese names for the following family/genera/species in this paper: families Luciobliviidae and Bogidiellidae, genera Octopupilla, Lucioblivio and Bogidiella, and species Octopupilla felix, Lucioblivio kozaensis and Bogidiella broodbakkeri.

著者

野田 泰一

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.2, pp.13-15, 1997

参考文献数

8

著者

吉田 朋弘 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

no.39, pp.17-24, 2015-08-31

---

Ostorhinchus fleurieu Lacepede, 1802 is recorded from Japan for the first time on the basis of 21 specimens (37.6-106.8mm standard length) collected from Kagoshima Prefecture, southern Japan. On the basis of underwater photographs, Osezaki, Izu Peninsula, is regarded as the northernmost record of the species. The new Japanese name "Kongo-tenjikudai" is proposed for the species. Comparisons of Ostorhinchus fleurieu with closely related species, O. aureus, based on 21 and 12 specimens, respectively, from Japan showed that O. fleurieu differed from O. aureus in having fewer total gill rakers (19-21, mode 21 vs. 23-24, 24 in the latter) and developed gill rakers (16-18, 18 vs. 18-21, 20), the pelvic-fin base located below the first lateral-line scale (vs. second scale), and a poorly defined, barrel-shaped black band on the caudal peduncle (vs. well-defined, sandglass-shaped band).

著者

齋藤 暢宏 藤田 大樹 饗場 空璃

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.53, pp.59-63, 2022-08-31 (Released:2022-08-31)

参考文献数

22

---

An immature cymothoid isopod was found infesting a serranid fish, Sacura margaritacea (Hilgendorf, 1879) (Perciformes: Serranidae), captured off Hiratsuka (Kanagawa Prefecture) in the Sagami Bay along the Pacific coast of central Japan. In molecular analyses, cytochrome c oxidase subunit I and 16S rRNA sequences of the cymothoid specimen shared ≥99% identity with those of Ceratothoa oxyrrhynchaena Koelbel, 1878 in GenBank. The produced anterolateral margins of pereonite 1 and the well-expanded carina at the posterior margin of pereopod 7 basis in the present specimen were in close agreement with the diagnostic characteristics of adult of C. oxyrrhynchaena, corroborating the results of molecular analyses. This finding represents a new host record of C. oxyrrhynchaena.

著者

益田 芳樹

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.15-22, 2006-02-20 (Released:2018-03-30)

参考文献数

44

---

All species of freshwater sponges belong to the suborder Spongillina (Phylum Porifera) and are classified into seven families. Some families (such as Spongillidae comprising about 150 species) are geographically widespread, while others (such as Lubomirskiidae) are endemic to small areas. Spicules exsist in a variety of forms and are most important in the identification and classification of species and higher taxa. Other important key characters for identification are size, form and structure of gemmules, the gemmule coat, and micropyle. Most freshwater sponges produce gemmules, which are resistant bodies and asexual propagules. In Japan, the timing of gemmule production varies among species. Some species are hatched from gemmules in early spring and produce gemmules in early summer when water temperatures have not reached the maxima. Green color of freshwater sponge bodies is caused by the presence of algal symbionts. The algal symbionts are classified into two major groups based on the presence or absence of pyrenoid. In Spongilla lacustris, transfer of symbionts from parents to the next generation has been observed in both sexual and asexual reproduction. The classification of symbionts in several sponge species is currently under investigation using culture and molecular biological methods. Whether host specificity exists in these symbiotic algae is also under investigation. All Japanese species belong to the family Spongillidae. The Japanese species have been classified into 25 species in 11 genera. Recently, Heterorotula multidentata and Trochospongilla pennsylvanica have conspicuously increased in their geographical range in Japan, although they were not recorded before World War II. They may be exotic species introduced by human activity.

著者

藤本 心太

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.51, pp.1-18, 2021-08-31 (Released:2021-08-31)

参考文献数

164

---

Tardigrades are microscopic invertebrates comprising Panarthropoda with two other phyla, Arthropoda and Onychophora. More than one thousand tardigrade species are known worldwide from marine, freshwater, and limno-terrestrial environments. To facilitate beginners interested in tardigrade systematics, the collection methods for these three environments, the specimen preparation methods for light microscopy and scanning electron microscopy, the DNA extraction procedures, and the recent advances in the systematics of the four orders belonging to the two classes, Eutardigrada (Apochela and Parachela) and Heterotardigrada (Arthrotardigrada and Echiniscoidea), are reviewed. The present status of the Japanese tardigrade fauna is also mentioned in brief.