Partial Inter sterility of Eastern and Western U. S. Strains of the Alfalfa Weevil

Blickenstaff, C. C.

doi:10.1093/aesa/58.4.523

Cited by 20 publications

(12 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Several researchers have examined mating between western and eastern strains (Blickenstaff 1965, White et al 1972, Klostermeyer and Manglitz 1979, and as noted above, examined hybridization among all three U.S. strains. However, many questions concerning hybridization, particularly for areas where strains have been in contact within Þelds for many years, remain unanswered.…”

Section: Resultsmentioning

confidence: 99%

Strain Distribution of Alfalfa Weevil (Coleoptera: Curculionidae) in an Intergrade Zone

Bundy

Smith

English

et al. 2005

View full text Add to dashboard Cite

Strain distribution for the alfalfa weevil, Hypera postica (Gyllenhal), was determined for the five major alfalfa-growing regions of New Mexico. Mitochondrial DNA from field-collected weevils at each location was digested and sequenced to differentiate among strains. Eastern, Egyptian, and western strains were recovered, along with a population not matching any known strain. The majority of sites examined had populations of two strains intermingled within a field. This is the first confirmation of the presence of all three strains within the same geographic region. Possible implications for alfalfa weevil management are discussed.

show abstract

Section: Resultsmentioning

confidence: 99%

Strain Distribution of Alfalfa Weevil (Coleoptera: Curculionidae) in an Intergrade Zone

Bundy

Smith

English

et al. 2005

View full text Add to dashboard Cite

show abstract

“…). Furthermore, in the USA, the Western strain is infected with Wolbachia , which causes reproductive incompatibility in inter‐strain crosses (Blickenstaff ; White et al . ; Schroder & Steinhauer ; Klostermeyer & Manglitz ; Hsiao & Hsiao ).…”

Section: Collected Populations Of Hypera Postica For Eastern‐strain Hmentioning

confidence: 99%

New haplotype and inter‐strain reproductive compatibility ofWolbachia‐uninfected alfalfa weevil,Hypera postica(Coleoptera:Curculionidae), inJapan

Iwase

Tani

2015

Entomological Science

View full text Add to dashboard Cite

Hypera postica is a univoltine invasive pest of alfalfa, Medicago sativa, in North America. In Japan, H. postica was first found in 1982 from Fukuoka and Okinawa Prefectures and became a serious pest of Chinese milk vetch, Astragalus sinicus, cultivated as a honey source for humans and green manure for rice. In North America, three strains, Western, Eastern and Egyptian, have been identified and the Western strain is infected with Wolbachia, which causes complete inter‐strain reproductive incompatibility. In contrast, only Western and Egyptian strains had been reported throughout Japan and none of the Western strain examined for the Fukuoka populations in northern Kyushu was infected with Wolbachia. First, we screened populations from northern Kyushu collected since 1982 for geographical and chronological distribution of the Eastern strain. The Eastern strain has been found at low frequencies since 1985 and is still present in 2014. Second, we experimentally tested our hypothesis that inter‐strain crosses between uninfected Western‐strain males and Egyptian‐strain females should produce viable offspring. We crossbred virgin adults reared individually from field‐collected larvae and confirmed that the F1 eggs of crosses between the Western‐strain males and the Egyptian‐strain females develop successfully into larvae.

show abstract

“…Crosses between populations in Great Britain of the satyrid butterfly Coenonympha tullia produced a high percentage of intersexes in the F1 hybrid adults even though the populations were only 600 miles apart (Ford, 1949). Blickenstaff (1965) found strong incompatibility between eastern and western strains of the imported alfalfa weevil, Hypera postica, with a great preponderance of females (1 6 :5.59 ' i? The strength of the barriers to crossing were found to be proportional to the general rigor of the climate with a descending gradient 238 c. G. OLIVER from the once-glaciated mountain areas to the valleys.…”

Section: Discussionmentioning

confidence: 97%

Genetic and Phenotypic Differentiation and Geographic Distance in Four Species of Lepidoptera

Oliver¹

1972

Evolution

View full text Add to dashboard Cite

Partial Inter sterility of Eastern and Western U. S. Strains of the Alfalfa Weevil

Cited by 20 publications

References 0 publications

Strain Distribution of Alfalfa Weevil (Coleoptera: Curculionidae) in an Intergrade Zone

Strain Distribution of Alfalfa Weevil (Coleoptera: Curculionidae) in an Intergrade Zone

New haplotype and inter‐strain reproductive compatibility ofWolbachia‐uninfected alfalfa weevil,Hypera postica(Coleoptera:Curculionidae), inJapan

Genetic and Phenotypic Differentiation and Geographic Distance in Four Species of Lepidoptera

Contact Info

Product

Resources

About