Cold hardiness of three aphid species, Acyrthosiphon pisum, Megoura crassicauda and Aulacorthum solani (Hemiptera: Aphididae).

Asai, Mirei; Yoshida, Hideya; Honda, Ken Ichiro; Tsumuki, Hisaaki

doi:10.1303/aez.2002.341

Cited by 8 publications

(8 citation statements)

References 16 publications

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“…The presence of a low proportion of sexual lineages on V . sativa in the northern part of Honshu (Asai et al . 2002; Kanbe unpublished data) suggests that northern climates primarily promoted the appearance of sexual or facultatively sexual clones on V. sativa .…”

Section: Discussionmentioning

confidence: 99%

“…Collection sites were selected on the basis of the results of previous studies (Takahashi & Naito 1984; Honda 1989; Asai et al . 2002) and climatic conditions.…”

Section: Methodsmentioning

confidence: 99%

“…angustifolia (L.) Gaudin that is indigenous to warm‐temperate regions, Vicia cracca L., clover Trifolium spp., alfalfa Medicago sativa L., Lathyrus japonicus Willd and some leguminous crops. Available evidence suggests that holocyclic populations are distributed in Hokkaido, while anholocyclic populations from Honshu to Kyushu, with mixed populations in the northern part of Honshu (Takahashi & Naito 1984; Honda 1989; Asai et al . 2002).…”

Section: Introductionmentioning

confidence: 99%

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Allelic and genotypic diversity in long‐term asexual populations of the pea aphid, Acyrthosiphon pisum in comparison with sexual populations

Kanbe

Akimoto

2009

Molecular Ecology

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Many aphid species exhibit geographical variation in the mode of reproduction that ranges from cyclical parthenogenesis with a sexual phase to obligate parthenogenesis (asexual reproduction). Theoretical studies predict that organisms reproducing asexually should maintain higher allelic diversity per locus but lower genotypic diversity than organisms reproducing sexually. To corroborate this hypothesis, we evaluated genotypic and allelic diversities in the sexual and asexual populations of the pea aphid, Acyrthosiphon pisum (Harris). Microsatellite analysis revealed that populations in central Japan are asexual, whereas populations in northern Japan are obligatorily sexual. No mixed populations were detected in our study sites. Phylogenetic analysis using microsatellite data and mitochondrial cytochrome oxidase subunit I (COI) gene sequences revealed a long history of asexuality in central Japan and negated the possibility of the recent origin of the asexual populations from the sexual populations. Asexual populations exhibited much lower genotypic diversity but higher allelic richness per locus than did sexual populations. Asexual populations consisted of a few predominant clones that were considerably differentiated from one another. Sexual populations on alfalfa, an exotic plant in Japan, were most closely related to asexual populations associated with Vicia sativa L. The alfalfa-associated sexual populations harboured one COI haplotype that was included in the haplotype clade of the asexual populations. Available evidence suggests that the sexuality of the alfalfa-associated populations has recently been restored through the northward migration and colonization of alfalfa by V. sativa-associated lineages. Therefore, our results support the theoretical predictions and provide a new perspective on the origin of sexual populations.

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Section: Discussionmentioning

confidence: 99%

“…Collection sites were selected on the basis of the results of previous studies (Takahashi & Naito 1984; Honda 1989; Asai et al . 2002) and climatic conditions.…”

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Allelic and genotypic diversity in long‐term asexual populations of the pea aphid, Acyrthosiphon pisum in comparison with sexual populations

Kanbe

Akimoto

2009

Molecular Ecology

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“…SCPs of adult males and females were measured using copper-constantan thermocouples connected to a multi-channel temperature recorder (Asai et al, 2002).…”

Section: Insectmentioning

confidence: 99%

Cold hardiness of adult western flower thrips, Frankliniella occidentalis (Pergande) (Thysanoptera: Thripidae)

Tsumuki

Ishida

Yoshida

et al. 2007

Appl. Entomol. Zool.

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The cold hardiness in adult males and females of Frankliniella occidentalis (Pergande) reared at different conditions were investigated. Supercooling points (SCPs) were about Ϫ26°C in both males and females. The SCPs were not affected by the rearing conditions of photoperiod and temperature. However, the survival periods of males and females at low temperatures from Ϫ15°C to 5°C were predominantly affected by rearing temperatures. Males and females reared at 15°C survived longer at the low temperatures than those reared at 20°C. Females survived for much longer than males at the low temperatures except Ϫ15°C. Furthermore, the survival periods of males and females at the low temperatures were affected by water and food applications. However, the effects were smaller in both males and females at 0°C from Ϫ5°C for 12 h to ϩ5°C for 12 h than 5°C, especially less water effect was observed in males at 0°C. Males and females given food maximally survived for about 30 d and 40 d at 0°C, and about 40 d and 60 d at 5°C, respectively. These results show that F. occidentalis can overwinter only in relative mild winter or artificial conditions.

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“…Each weevil was fixed on the tip of a thermocouple with silicon grease and the temperature was decreased at a rate of about 1.0°C/10 min in a freezer. The body temperature of weevils was recorded with a multi-channel temperature recorder (Asai et al, 2002).…”

Section: Methodsmentioning

confidence: 99%

Cold tolerance of the sweet potato weevil, Cylas formicarius (Fabricius) (Coleoptera: Brentidae), from the Southwestern Islands of Japan

Kandori

Kimura

Tsumuki

et al. 2006

Appl. Entomol. Zool.

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The cold tolerance of Cylas formicarius from five islands in the southwest of Japan was studied. The thermal threshold of the reproductive activity of adults tended to be lower and the supercooling point of the pupae was a little higher for the Okinawa-Honto population than for the others. The cold tolerance of the adult weevils was slightly accelerated by cold acclimation to 15°C for 4 d. Reproductive diapause induced under 10L : 14D increased cold tolerance significantly. Therefore, the cold tolerance of adult weevils would be accelerated by both cold acclimation at decreasing temperatures from autumn to winter and reproductive diapause induced by short daytime hours. When considering the increased cold-tolerence of C. formicarius through such mechanisms together with the temperature conditions in winter at the northern edge of its distribution area in the USA, C. formicarius probably has the capability to survive in the coastal zone of the Pacific Ocean in southern and central Japan.

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Cold hardiness of three aphid species, Acyrthosiphon pisum, Megoura crassicauda and Aulacorthum solani (Hemiptera: Aphididae).

Cited by 8 publications

References 16 publications

Allelic and genotypic diversity in long‐term asexual populations of the pea aphid, Acyrthosiphon pisum in comparison with sexual populations

Allelic and genotypic diversity in long‐term asexual populations of the pea aphid, Acyrthosiphon pisum in comparison with sexual populations

Cold hardiness of adult western flower thrips, Frankliniella occidentalis (Pergande) (Thysanoptera: Thripidae)

Cold tolerance of the sweet potato weevil, Cylas formicarius (Fabricius) (Coleoptera: Brentidae), from the Southwestern Islands of Japan

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