| evaluation of host range and larval feeding impact of chrysolina aurichalcea asclepiadis (villa): considerations for biological control of vincetoxicum in north america. | a biological control program has been initiated against european swallow-worts vincetoxicum nigrum (l.) moench. and v. rossicum (kleopow) barbar., which are invasive in north america. a population of the leaf beetle chrysolina aurichalcea asclepiadis (villa) originating from the western alps has been under evaluation as a part of this program. the preliminary host range of c. a. asclepiadis was determined among 37 potential host plants. in addition, a prerelease impact study was conducted to det ... | 2011 | 22217758 |
| reproductive isolation between 2 karyotypes in natural populations of the leaf beetle chrysolina aurichalcea. | japanese populations of the leaf beetle, chrysolina aurichalcea, have 2 main karyotypes, type 31 and type 41, which greatly differ in chromosome number and form. we examined their geographical distribution and reproductive isolation in southern hokkaido, northern japan. type 41 was widely distributed in the survey area, whereas type 31 was restricted to a narrow portion. a transect across each karyotypic habitat revealed that both karyotypes co-occurred in a approximately 5 km wide zone, with fe ... | 2010 | 20015967 |
| rapid chromosomal changes inferred from variation in mitochondrial dna among populations of the leaf beetle chrysolina aurichalcea (coleoptera: chrysomelidae) in japan. | there are two karyotypes among japanese populations of the leaf beetle chrysolina aurichalcea . in "type 31" beetles, the diploid number of chromosomes is 2n=32 in females and 31 in males, while in "type 41" individuals, the diploid number of chromosomes is 2n=42 in females and 41 in males. both karyotypes occur allopatrically or parapatrically in the wild, depending on location; generally, type 41 beetles inhabit mountainous areas and type 31 beetles occur on lowland plains. to assess genetic d ... | 2008 | 19267622 |
| size-disassortative mating in the chrysomelid beetle chrysolina aurichalcea (coleoptera: chrysomelidae). | | 1985 | 28561984 |