A novel method was applied to study chromosomes and their behavior in female meiosis in three parthenogenetic psocid species (Psocoptera). Two of these species Valenzuela flavidus (Steph.). Caeciliusidae and Peripsocus subfasciatus (Rambur), Peripsocidae displayed a triploid chromosome number 3x = 27 while the third species Trichadenotecnum majus (Kolbe) was diploid (2n = 18). In all species meiosis consisted of only a single, mitosis-like maturation division, i.e. meiosis was of apomictic type. Models for the formation of polyploid parthenogenetic forms are discussed.
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Southwest Univ, Coll Plant Protect, Key Lab Entomol & Pest Control Engn, Chongqing 400715, Peoples R ChinaSouthwest Univ, Coll Plant Protect, Key Lab Entomol & Pest Control Engn, Chongqing 400715, Peoples R China
Dong, Peng
Wang, Jinjun
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Southwest Univ, Coll Plant Protect, Key Lab Entomol & Pest Control Engn, Chongqing 400715, Peoples R ChinaSouthwest Univ, Coll Plant Protect, Key Lab Entomol & Pest Control Engn, Chongqing 400715, Peoples R China
Wang, Jinjun
Jia, Fu-Xian
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Southwest Univ, Coll Plant Protect, Key Lab Entomol & Pest Control Engn, Chongqing 400715, Peoples R ChinaSouthwest Univ, Coll Plant Protect, Key Lab Entomol & Pest Control Engn, Chongqing 400715, Peoples R China
Jia, Fu-Xian
Hu, Fei
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Southwest Univ, Coll Plant Protect, Key Lab Entomol & Pest Control Engn, Chongqing 400715, Peoples R ChinaSouthwest Univ, Coll Plant Protect, Key Lab Entomol & Pest Control Engn, Chongqing 400715, Peoples R China
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Southwest Univ, Coll Plant Protect, Key Lab Entomol & Pest Control Engn, Chongqing 400715, Peoples R ChinaSouthwest Univ, Coll Plant Protect, Key Lab Entomol & Pest Control Engn, Chongqing 400715, Peoples R China
Wang, Jin-Jun
Ren, Yi
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Southwest Univ, Coll Plant Protect, Key Lab Entomol & Pest Control Engn, Chongqing 400715, Peoples R ChinaSouthwest Univ, Coll Plant Protect, Key Lab Entomol & Pest Control Engn, Chongqing 400715, Peoples R China
Ren, Yi
Wei, Xue-Qing
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Southwest Univ, Coll Plant Protect, Key Lab Entomol & Pest Control Engn, Chongqing 400715, Peoples R ChinaSouthwest Univ, Coll Plant Protect, Key Lab Entomol & Pest Control Engn, Chongqing 400715, Peoples R China
Wei, Xue-Qing
Dou, Wei
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Southwest Univ, Coll Plant Protect, Key Lab Entomol & Pest Control Engn, Chongqing 400715, Peoples R ChinaSouthwest Univ, Coll Plant Protect, Key Lab Entomol & Pest Control Engn, Chongqing 400715, Peoples R China