• Animal Systematics, Evolution and Diversity
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• v.6 no.2
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• pp.235-250
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• 1990

This study deals with 8 species in 6 genera including 5 new species and 2 new records from Taiwan. The new ones are Neanura kentingensis n.sp., Womersleya formosana n.sp., Crossodinthina montana n.sp., Vitronura tubercula sp., Lobella nana n.sp., and 2 new records are Pseudachorucina nepalica Yosii, 1966 and Lobella perfusa Denis., 1934. The Neanuridae fauna of Taiwan accordingly is listed as 13 species in 7 genera. The biogeographic affinities with the Japan, Vietnam and adjacent countries are discussed.

• Animal Systematics, Evolution and Diversity
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• v.1 no.1_2
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• pp.3-20
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• 1985

혹무늬 톡토기과의 56개 아과들에서 20개 형질복합을 추추랗여 형질평가방법과 Wagner algorithm의 형질 비평가방법을 사용하여 계통수를 작성, 비교하였다. 전자의 방법을 이해 진화적 형질순서와 극성을 결정하고 고등급의 파생공유 형질을 토대로한 단계통군과 자매군을 확인하여 계통분화를 추적하였다. 이 두가지 방법에 의한 계통수에서 분지 방식은 매우 다르게 나타났으나 나열순서는 유사했고, 단지 마지막의 2개 아과가 후자에서는 반대로 나타났다. 그 원인은 후자의 방법으로는 파생혈질수가 많은 분류군에서의 형질상태가 Wagner algorithm에서 누적효과를 일으킨 때문인 것으로 생각되며, 아울러 1, 10 및 20 번 형질의 적응이동(adaptive shift) 상 나타낼 중요한 의의를 적절히 평가 반영할 수 없는 것으로 추정된다.

• Animal Systematics, Evolution and Diversity
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• v.11 no.4
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• pp.479-484
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• 1995

We carried out the study on interstitial Collembola from Korean sand dunes. One new species and two new records for Korea were found. They are Friesea leei n. sp. of Neanuridae, and Proisotoma minuta Folsom, 1937 and Folsomides parvulus Stach, 1922 of Isotomidae. Also Archisotoma sp. was collected.

• Animal Systematics, Evolution and Diversity
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• v.6 no.2
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• pp.251-260
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• 1990

This study deals with 8 species in 6 genera including 5 new species and 2 new records from Taiwan. The new ones are Neanura kentingensis n.sp., Womersleya formosana n.sp., Crossodinthina montana n.sp., Vitronura tubercula sp., Lobella nana n.sp., and 2 new records are Pseudachorucina nepalica Yosii, 1966 and Lobella perfusa Denis., 1934. The Neanuridae fauna of Taiwan accordingly is listed as 13 species in 7 genera. The biogeographic affinities with the Japan, Vietnam and adjacent countries are discussed.

• Animal Systematics, Evolution and Diversity
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• v.12 no.2
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• pp.121-136
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• 1996

In order to understand affinities and phylogeny of three families of the Superfamily Entomobryoidea allozyme analysis was performed with three species presumably representing each family, in addition to four species belonging to the neighboring Superfamily Poduroidea together. Electrophoresis for this purpose produced data for calculating allele frequency and enabled to obtain genetic distance and to depict dendrograms as well. The species of Isotomidae, Entomobryidae and Tomoceridae were clustered together whereas those of Hypogastruridae, Onychiuridae and Neanuridae were grouped as monophylies, respectively. Even though Tomoceridae and Entomobryidae were brought together they are considered complete families by showing high genetic distance value between them, thus supporting the hypothesis on their affinity among others. Gulgastrura reticulosa has been revealed to be separated from Hypogastruridae by being clustered rather with Onychiuridae. However, its high genetic distance value suggests the status as an independent family. The present result agreed with the phylogeny of Suborder Arthropleona divided into two Superfamilies mentioned above as in conventional systematics and also when compared with analysis of data of their morphological characters as well as 18S rDNA performed and published elsewhere by the present writers.

• Korean Journal of Environmental Biology
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• v.42 no.1
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• pp.54-61
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• 2024

The ecosystem provides a diverse array of environmental conditions for organisms, and only those that are capable of successfully adapting to these conditions within their habitats can endure, thrive, and proliferate. Further, the environmental conditions within these habitats can significantly affect the bioavailability of chemicals that are introduced therein, thus resulting in varied adverse impacts on the organisms. The present study aims to evaluate the sensitivity of Yuukianura szeptyckii - a species adapted to riparian - to heavy metals following ISO guideline 11276, with the objective of assessing its potential as an indicator species for ecotoxicological evaluations in riparian habitats. The findings revealed that cadmium and copper both had significant toxic effects depending on their concentrations. For cadmium, the LC₅₀ was 280 mg kg^-1, EC₅₀ was 66 mg kg^-1, and NOEC and LOEC were 25 and 50 mg kg^-1, respectively. For copper, the LC₅₀ was 911 mg kg^-1, EC₅₀ was 151 mg kg^-1, and LOEC was 50 mg kg^-1. Comparative analysis with previous results for the international standard species Folsomia candida and the domestic standard species Allonychiurus kimi indicated that Y. szeptyckii exhibited even greater sensitivity to toxicity values. The adverse effects on survival and reproduction were closely associated with the influx concentration of heavy metals in their bodies. Altogether, the results suggest that Y. szeptyckii is a sensitive species for ecotoxicological assessments in riparian habitats, thus making it suitable as an indicator species, particularly in riparian ecosystems that are characterized by relatively high humidity conditions.