Speciation, karyotypic differentiation, and hybrid zones in the Leibunum curvipalpe group (Arachnida, Opiliones)

Leibunum curvipalpe 类群（蛛形纲、Opiliones）的物种形成、核型分化和杂种带

• 批准号: 13640696
• 负责人: TSURUSAKI Nobuo
• 金额: $ 2.18万
• 依托单位: Tottori University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2001
• 资助国家: 日本
• 起止时间: 2001 至 2003
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-13640696/
• 关键词: chromosomes; speciation; hybrid zone; harvestmen; Arachnida; geographic variation; 倍数体; 中国地方; クモガタ名綱; 形質置換

The Leiobunum curvipalpe-group, consisting of 11 species (L.hiraiwai, L.montanum, L.kohyai, L.sadoense, L.simplum, L.hiasai, L.hikocola, L.curvipalpe, L.tohokuense, L.globosum, and L.manubriatum) shows great karyotypic variability both between and within species. Moreover, in two species of the group.occurrence of polyploid races are also known. Geographical patterns of the karyotypic differentiation and the role of the chromosomal hybrid zones in the speciation process of the group were investigated. The principal results obtained are as follows. 1.It was found that chromosomes of Leiobunum mohtanum varied from 2n=18 to 20/22 in eastern part of the Chugoku Mountains, Honshu. 2.A morphologically very divergent form of L.montanum, named Ohginosen race, was newly found around Mt Ohginosen in easternmost Tottori Prefecture. 3.Principal component analyses of 11 morphological characters for populations of L.montanum in and near Tottori Prefecture revealed occurrence of three groups that correspond well with geographical locations. 4.Samples for DNA analyses were accumulated for six of 11 species of the curvipalpe-group. A phylogenetic analysis is just getting underway. 5.A model to explain extraordinarily high emergence of gynandromorphs in a tetraploid facultative thelytoke, L.globosum.

曲须滑唇菌属（Leiobunumcurvipalpe-group）包括11个种（平井滑唇菌（L.hiraiwai）、蒙塔滑唇菌（L.montanum）、小野滑唇菌（L.kohyai）、佐东滑唇菌（L.sadoense）、简单滑唇菌（L.simplum）、平井滑唇菌（L.hiasai）、小野滑唇菌（L.hikocola）、曲须滑唇菌（L.curvipalpe）、东北滑唇菌（L.tohokuense）、球形滑唇菌（L.globosum）和柄滑唇菌（L.manubriatum），在种间和种内均表现出很大的核型变异。此外，在该组的两个物种中，也已知存在多倍体小种。本文还对核型分化的地理模式和染色体杂交带在该类群物种形成过程中的作用进行了探讨。得到的主要结果如下。1.在日本中部山地东部地区发现了一种具有2n=18 ~ 20/22染色体变异的植物。2.在日本鸟取县最东端的大宜山附近新发现了一个形态上非常不同的变种，命名为大宜山种。3.对鸟取县及其附近的山龙眼种群的11个形态性状进行主成分分析，发现与地理位置相对应的3个类群。4.用于DNA分析的样品积累了11种curvipalpe组的6个。系统发育分析正在进行中。5.一个解释四倍体兼性雌配子体（L. globosum）异常高出现的模型。

项目成果

Tsurusaki, N.: "Phenology and biology of harvestmen in and near Sapporo, Hokkaido, Japan, with some taxonomical notes on Nelima suzukii n.sp.and allies(Arachnida : Opiliones)."Acta Arachnologica. 52. 5-24 (2003)

Tsurusaki, N.：“日本北海道札幌及其附近收割者的物候学和生物学，以及有关铃木奈丽马及其盟友（蛛形纲：Opiliones）的一些分类学注释。”蛛形学学报。

Matsuyama Wildlife Research Council(ed.): "Check-lists of the spiders, harvestmen, and millipedes of Matsuyama City (Ehime Prefecture, Shikoku, Japan). (In Japanese)"Check-list of the Wilid Animals and Plants of Matsuyama City.(Matsuyama City). 270 (2003)

松山野生动物研究协议会（编辑）：“松山市蜘蛛、收割者和千足虫清单（日本四国爱媛县）。（日语）”松山市野生动植物清单

Tsurusaki, N., Shirai, Y., Nakano, S., Fujiyama, N., Kahono, S., Katakura H.: "B-chromosomes in the Indonesian populations of a phytophagous ladybird beetle "Epilachna vigintioctopunctata"."Special Bulletin of Japan Coelopterological Society, Osaka. No.1.

Tsurusaki, N.、Shirai, Y.、Nakano, S.、Fujiyama, N.、Kahono, S.、Katakura H.：“植食性瓢虫“Epilachna vigintioctopunctata”印度尼西亚种群中的 B 染色体。”特别公告

Tsurusaki, N., Adachi, T., Kishimoto, K.: "Fauna of harvestmen (Arachnida, Opiliones) in the Hiruzen Tottori University Forest of southwestern Honshu, Japan. (In Jananese with English abstract)"Research Bulletin of the Tottori University Forests. No.27. 6

Tsurusaki, N.、Adachi, T.、Kishimoto, K.：“日本本州西南部鸟取大学森林中的收获者动物群（蛛形纲、Opiliones）。（日文，英文摘要）”鸟取大学研究通报

鶴崎展巨, 足達珠美, 岸本興之介: "鳥取大学蒜山演習林のザトウムシ相"鳥取大学附属演習林研究報告. No.27. 61-69 (2003)

鹤崎信夫、安达玉见、岸本幸之介：《鸟取大学蒜山实验林的座头鲸动物群》鸟取大学实验林研究报告书第27. 61-69号（2003年）。