• Animal cells and systems
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• v.2 no.4
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• pp.451-454
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• 1998

Gulgastrura reticulosa, first described by Yosii (1966) as a monotypic new genus from a Korean limestone cave, was reviewed for its systematic position by c1adistic analysis of morphological characteristics, investigation of its intermaulting period and reproductive cycle as well as allozyme and 18S rDNA analysis. The great extent of divergence was strongly suggested by its combined lack of sensory organs (third antennal organ, postantennal organ, eyes, pseudocelli) with simultaneous development of an 'apical organ'at the tip of the antennae. The obvious divergence from any existing Collembola families was additionally supported by the extremely prolonged intermoulting period as well as by the low strap value it showed with Onychiuridae as obtained by 18S DNA sequence analysis. All these were considered Justifying the creation of a new family, Gulgastruridae, but still revealing more allied to Onychiuvidae rather than to Hypogastruridae.

• The Korean Journal of Zoology
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• v.34 no.3
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• pp.265-288
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• 1991

한국산 털보톡토기과(Collembola, Insecta)의 계통유연관계를 알아보기 위해 이 과에 속하는 3개속(Sinella, Entomobrya, Homidia)의 6종과 가시톡토기과의 1종(Tomocerus kinoshitai)에 대하여 모서식과 형태적 조사 외에 전기영동을 이용한 효소분석을 시리시하였다. 이들 모든 조사에서 32개의 형태형질과 33개의 모서식형질 및 80개의 효소유전자 형질을 얻어 분지분석하였는데, 이중 효소유전자에 대해서는 UPGMA방법도 적용하였다. 이러한 분석 결과 다양한 분지도를 얻었으나, Homidia종들은 언제나 두 개의 무리로 분리되었으며, Homidia munda의 두 아종이 가장 유연관계가 높았다. 반면에 Homidia koreana의 두 개체군은 다소 분리되어 같은 종으로 보기 의심스럽다는 소견을 얻었다. 또한 형태형질분석으로 얻은 계통수에서 가시톡토기과의 Tomocerus종이 털보톡토기과의 속들 사이에 끼어들어 나타나는데 이것은 형질에 따라 비중을 달리두는 평가방법이 아니기 때문에 나타난 것으로 추측된다. 본 연구 결과 대체로 외부형질과 모서식, 그리고 효소유전자의 세가지 유형의 형질들을 종합 분석할 때 도출되는 계통수가 자연분류에 가장 가까운 근연성을 보이는 것으로 판단되었다.

• 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.

• Proceedings of the Zoological Society Korea Conference
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• 1997.10b
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• pp.114.2-114
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• 1997

No Abstract, See Full Text

• Animal Systematics, Evolution and Diversity
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• v.15 no.1
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• pp.11-25
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• 1999

Two problematic subgenera of Tomoceridae (Collembola, Insecta) were investigated for their phylogenetic relationships based on morphological characters and allozyme study from three relevant species. Different dendrograms were obtained obtained between morphological and allozyme studies. The morphological data did not give rise to any result distinctive enough to separate the two subgenera whereas the allozyme analysis produced a clear separation by the high genetic distance value. They were consistent, however, whether given rise to by using distance or cladistic methods and also whether character weighting or unweighting approaches employed in the morphological character analysis. As a consequence, it is strongly suggested that any prominent morphological trait might work as a good taxonomical character when supported by a strong genetic divergence as evidenced by allozyme analysis for instance.

• 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.