Biology of Some Scolytid Ambrosia Beetles Attacking Tea Plants : V Chromosome Numbers and Sex Determination of Tea Root Borer, Xyleborus germanus BLANFORD (Coleoptera : Scolytidae)
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概要
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The number of chromosomes was determined for X. germanus BLAN. The aceto-orcein squash technique was applied to embryonal somatic cells and male testes. The number of chromosomes of X. germanus was 8 in the haploid and 16 in the diploid. Data obtained from rearing test and chromosome analysis of embryo indicated that the sex determination in the X. germanus was of the haplo-diploid type. Virgin females laid only haploid eggs and produced male progeny only. Mated females laid haploid and diploid eggs in the ratio of about 9 : 1 and produced adults in the sex-ration 9 : 1 (♀ : 〓). It was suggested that some control mechanism of fertilization by fermale caused the abnormal sex ratio in X. germanus.
- 日本応用動物昆虫学会の論文
- 1966-03-25
著者
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Takagi Kazuo
Tea Research Station Ministry Of Agriculture And Forestry Kanaya Shizuoka Prefecture
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Takagi Kazuo
Tea Research Station Ministry Of Agriculture And Forestry
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KANEKO Takeshi
Tea Research Station Ministry of Agriculture and Forestry
関連論文
- Biology of Some Scolytid Ambrosia Beetles Attacking Tea Plants : V Chromosome Numbers and Sex Determination of Tea Root Borer, Xyleborus germanus BLANFORD (Coleoptera : Scolytidae)
- A Chromosome Study of Two Parthenogenetic Scolytid Beetles
- Descriptions of Three Economically Important Species of Root-Feeding Mealybugs in Japan (Homoptera : Pseudococcidae)
- Two Subterranean Species of the Ortheziidae Found in Tea Gardens in Japan : Cocoidea : Ortheziidae
- Biology of Some Scolytid Ambrosia Beetles Attacking Tea Plants : VI A Comparative Study of Two Ambrosia Fungi Associated with Xyleborus compactus EICHHOFF and Xyleborus germanus BLANFORD (Coleoptera : Scolytidae)
- The Storage Organ of Symbiotic Fungus in the Ambrosia Beetle Xyleborus rubricollis EICHHOFF : Coleoptera : Scolytidae