Parallelism in secondary loss of sex from a heterogonic life cycle on different host plants in the Andricus mukaigawae complex (Hymenoptera: Cynipidae), with taxonomic notes

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Abstract

The Andricus mukaigawae complex consists of bivoltine heterogonic ( = cyclically parthenogenetic) and univoltine thelytokous (parthenogenetic) populations. The bivoltine heterogonic populations are divided into A. mukaigawae (2n = 12), which produces bur-shaped unisexual galls (producing only asexual females) on Quercus aliena, Q. mongolica, and Q. serrata; and A. kashiwaphilus (2n = 10), which produces flower-shaped unisexual galls on Q. dentata. The univoltine thelytokous populations have to date been treated as one species, A. targionii (s. lat.), but the population on Q. aliena produces bur-shaped galls and that on Q. dentata produces flower-shaped galls. I investigated the karyotype of the population of A. targionii (s. lat.) on Q. dentata. This population had the same karyotype as that of A. kashiwaphilus. The karyotype and shape of galls indicate that A. targionii (s. lat.) on Q. dentata is derived from A. kashiwaphilus, and that on Q. aliena is derived from A. mukaigawae through the parallel deletion of the bisexual (sexually reproducing) generation on different host plants. Since A. targionii (s. lat.) is thus shown to be polyphyletic, the name A. targionii (s. str.) should be applied to the univoltine thelytokous population on Q. aliena, and the univoltine thelytokous population on Q. dentata should be identified as A. pseudoflos comb. n., judging from the original descriptions.

Original languageEnglish
Pages (from-to)473-480
Number of pages8
JournalJournal of Natural History
Volume41
Issue number5-8
DOIs
Publication statusPublished - Apr 8 2007
Externally publishedYes

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Andricus
Cynipidae
Hymenoptera
gall
Life Cycle Stages
host plant
life cycle (organisms)
host plants
life cycle
karyotype
galls
gender
Population
Karyotype
karyotyping
flower
Quercus dentata
Quercus serrata
Quercus mongolica
Quercus

All Science Journal Classification (ASJC) codes

  • Ecology, Evolution, Behavior and Systematics

Cite this

@article{e91cc985096f439badde23fb74c31742,
title = "Parallelism in secondary loss of sex from a heterogonic life cycle on different host plants in the Andricus mukaigawae complex (Hymenoptera: Cynipidae), with taxonomic notes",
abstract = "The Andricus mukaigawae complex consists of bivoltine heterogonic ( = cyclically parthenogenetic) and univoltine thelytokous (parthenogenetic) populations. The bivoltine heterogonic populations are divided into A. mukaigawae (2n = 12), which produces bur-shaped unisexual galls (producing only asexual females) on Quercus aliena, Q. mongolica, and Q. serrata; and A. kashiwaphilus (2n = 10), which produces flower-shaped unisexual galls on Q. dentata. The univoltine thelytokous populations have to date been treated as one species, A. targionii (s. lat.), but the population on Q. aliena produces bur-shaped galls and that on Q. dentata produces flower-shaped galls. I investigated the karyotype of the population of A. targionii (s. lat.) on Q. dentata. This population had the same karyotype as that of A. kashiwaphilus. The karyotype and shape of galls indicate that A. targionii (s. lat.) on Q. dentata is derived from A. kashiwaphilus, and that on Q. aliena is derived from A. mukaigawae through the parallel deletion of the bisexual (sexually reproducing) generation on different host plants. Since A. targionii (s. lat.) is thus shown to be polyphyletic, the name A. targionii (s. str.) should be applied to the univoltine thelytokous population on Q. aliena, and the univoltine thelytokous population on Q. dentata should be identified as A. pseudoflos comb. n., judging from the original descriptions.",
author = "Yoshihisa Abe",
year = "2007",
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journal = "Journal of Natural History",
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T1 - Parallelism in secondary loss of sex from a heterogonic life cycle on different host plants in the Andricus mukaigawae complex (Hymenoptera

T2 - Cynipidae), with taxonomic notes

AU - Abe, Yoshihisa

PY - 2007/4/8

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N2 - The Andricus mukaigawae complex consists of bivoltine heterogonic ( = cyclically parthenogenetic) and univoltine thelytokous (parthenogenetic) populations. The bivoltine heterogonic populations are divided into A. mukaigawae (2n = 12), which produces bur-shaped unisexual galls (producing only asexual females) on Quercus aliena, Q. mongolica, and Q. serrata; and A. kashiwaphilus (2n = 10), which produces flower-shaped unisexual galls on Q. dentata. The univoltine thelytokous populations have to date been treated as one species, A. targionii (s. lat.), but the population on Q. aliena produces bur-shaped galls and that on Q. dentata produces flower-shaped galls. I investigated the karyotype of the population of A. targionii (s. lat.) on Q. dentata. This population had the same karyotype as that of A. kashiwaphilus. The karyotype and shape of galls indicate that A. targionii (s. lat.) on Q. dentata is derived from A. kashiwaphilus, and that on Q. aliena is derived from A. mukaigawae through the parallel deletion of the bisexual (sexually reproducing) generation on different host plants. Since A. targionii (s. lat.) is thus shown to be polyphyletic, the name A. targionii (s. str.) should be applied to the univoltine thelytokous population on Q. aliena, and the univoltine thelytokous population on Q. dentata should be identified as A. pseudoflos comb. n., judging from the original descriptions.

AB - The Andricus mukaigawae complex consists of bivoltine heterogonic ( = cyclically parthenogenetic) and univoltine thelytokous (parthenogenetic) populations. The bivoltine heterogonic populations are divided into A. mukaigawae (2n = 12), which produces bur-shaped unisexual galls (producing only asexual females) on Quercus aliena, Q. mongolica, and Q. serrata; and A. kashiwaphilus (2n = 10), which produces flower-shaped unisexual galls on Q. dentata. The univoltine thelytokous populations have to date been treated as one species, A. targionii (s. lat.), but the population on Q. aliena produces bur-shaped galls and that on Q. dentata produces flower-shaped galls. I investigated the karyotype of the population of A. targionii (s. lat.) on Q. dentata. This population had the same karyotype as that of A. kashiwaphilus. The karyotype and shape of galls indicate that A. targionii (s. lat.) on Q. dentata is derived from A. kashiwaphilus, and that on Q. aliena is derived from A. mukaigawae through the parallel deletion of the bisexual (sexually reproducing) generation on different host plants. Since A. targionii (s. lat.) is thus shown to be polyphyletic, the name A. targionii (s. str.) should be applied to the univoltine thelytokous population on Q. aliena, and the univoltine thelytokous population on Q. dentata should be identified as A. pseudoflos comb. n., judging from the original descriptions.

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