Results 151 to 160 of about 758 (171)
Lack of meiotic recombination in thelytokous parthenogenesis of laying workers of Apis mellifera capensis (the Cape honeybee) [PDF]
Heredity, 1994 Offspring of thelytokous laying workers of Apis mellifera capensis were screened using multilocus DNA fingerprinting with the (GATA)4 oligonucleotide. All screened offspring workers revealed an identical DNA fingerprint pattern, lacking evidence of any meiotic recombination.
Robin F A Moritz +2 more
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CYTOLOGICAL ANALYSIS OF THE THELYTOKOUS PARTHENOGENESIS IN THE CAPE HONEYBEE (APIS MELLIFERA CAPENSIS ESCHOLTZ) [PDF]
Apidologie, 1983 Friedrich Ruttner
exaly +2 more sources
Genetic diversity and the phylogeography of parthenogenesis: comparing bisexual and thelytokous populations of Nemasoma varicorne (Diplopoda: Nemasomatidae) in Denmark [PDF]
Hereditas, 2002 The millipede, Nemasoma varicorne, represents a textbook example of geographic parthenogenesis with thelytokous populations being distributed north, east, south and west of the distribution of the bisexual ancestor in the deciduous forests of central Europe.
Henrik Enghoff, Jane Frydenberg
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Nature, 1953
PARTHENOGENESIS occurs naturally in several orders of insects, and can conveniently be classified according to the sex of the offspring which develop from the unfertilized egg: (1) arrhenotoky—males only (fertilized eggs give rise to females); (2) thelytoky—females only; (3) amphitoky—both sexes.
exaly +3 more sources
PARTHENOGENESIS occurs naturally in several orders of insects, and can conveniently be classified according to the sex of the offspring which develop from the unfertilized egg: (1) arrhenotoky—males only (fertilized eggs give rise to females); (2) thelytoky—females only; (3) amphitoky—both sexes.
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Thelytokous Parthenogenesis in the AntMyrmecina nipponica(Hymenoptera: Formicidae)
Zoological Science, 2014Myrmecina nipponica Wheeler is a terrestrial ant nesting chiefly in the soil in forest. It is a specialized predator of oribatid mites, but also scavenges on a broad spectrum of other arthropods. In the studied population at Cape Manazuru in central Japan, M. nipponica colonies are typically monogynous, and previous dissections of queens suggested that
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THELYTOKOUS PARTHENOGENESIS IN CEPHUS CINCTUS NORT.: A CRITICISM
The Canadian Entomologist, 1938I have read with great interest C. W. Farstad's paper (1938) on “Thelyotokous parthenogenesis in Cephus cinctus Nort.,” since it parallels so closely my own problem in Diprion polytomum Hartig. But, whilst agreeing with his final conclusion that there are doubtless two forms of C. cinctus manifesting alternative modes of parthenogenetic reproduction in
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Experimental and Applied Acarology, 1990
Based on available sex-ratio data, and a few published laboratory proofs, it appears that thelytokous parthenogenesis is probably widespread in the oribatid mites. It is especially common in early-derivative taxa, such as the Desmonomata, where it seems to characterize whole families. Fifteen species of that group were proven capable of parthenogenesis
Sandra C. Palmer, Roy A. Norton
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Based on available sex-ratio data, and a few published laboratory proofs, it appears that thelytokous parthenogenesis is probably widespread in the oribatid mites. It is especially common in early-derivative taxa, such as the Desmonomata, where it seems to characterize whole families. Fifteen species of that group were proven capable of parthenogenesis
Sandra C. Palmer, Roy A. Norton
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2021
Thelytokous reproduction by dealate queens in Monomorium hiten Terayama, 1996, collected from four islands of the Nansei Islands (Okinawa Prefecture, Japan) was confirmed in the field and laboratory. Dissection revealed that all dealate queens (N = 38) found in nine field collected colonies were uninseminated.
Fuminori Ito +5 more
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Thelytokous reproduction by dealate queens in Monomorium hiten Terayama, 1996, collected from four islands of the Nansei Islands (Okinawa Prefecture, Japan) was confirmed in the field and laboratory. Dissection revealed that all dealate queens (N = 38) found in nine field collected colonies were uninseminated.
Fuminori Ito +5 more
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Entomological Science, 2017
AbstractOnly recently has it become clear that several species of eusocial hymenopterans regularly reproduce by thelytokous parthenogenesis, that is, the production of diploid female offspring by unmated females. This phenomenon suggests that parthenogenetic reproduction might be advantageous to organisms under certain environmental conditions.
Ching‐Chen Lee +3 more
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AbstractOnly recently has it become clear that several species of eusocial hymenopterans regularly reproduce by thelytokous parthenogenesis, that is, the production of diploid female offspring by unmated females. This phenomenon suggests that parthenogenetic reproduction might be advantageous to organisms under certain environmental conditions.
Ching‐Chen Lee +3 more
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The Evolutionary Genetics of Thelytokous Parthenogenesis in Eusocial Hymenoptera
2014The phenomenon of thelytoky, the asexual production of diploid female offspring, is being increasingly uncovered among the eusocial Hymenoptera. Thelytoky is associated with a number of fascinating and novel reproductive systems. In this thesis I investigate the evolutionary and genetic consequences of thelytokous parthenogenesis, with particular focus
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