Showing papers on "Dacus published in 2002"
TL;DR: The CLIMEX model was used to infer the climatic requirements of the Mediterranean fruit fly, Ceratitis capitata, from the fruit fly’s observed geographical distribution, and a global risk map for medfly was produced, which highlights the areas at risk from this major quarantine pest.
Abstract: The CLIMEX model was used to infer the climatic requirements of the Mediterranean fruit fly, Ceratitis capitata (Wiedemann), from the fruit fly’s observed geographical distribution in the Mediterranean region. The model indicated that the potential distribution was limited by cold to the north in Europe and by dryness in northern Africa and in the south of Spain and Portugal. The model was then used to estimate the potential geographical distribution of the species in Argentina and Australia. The results agreed with the observed distribution in Argentina and much of the historical distribution in Australia, but they did not agree with the present distribution in eastern Australia. In the latter region, another species of fruit fly, Bactrocera (Dacus) tryoni (Froggatt) has been credited with displacing C. capitata. Seasonal and year-to-year variation in climatic suitability was explored at three selected locations in Argentina. The results indicated that some detrimental effects of summer temperat...
184 citations
TL;DR: It was showed that olive fruits infested with B. oleae eggs exerted a relevant attraction to gravid F. arisanus and represented a stimulus for oviposition and were not as attractive to female parasitoids as the Mediterranean fruit fly, Ceratitis capitata Wiedemann, eggs infested papaya fruits.
Abstract: To date, information is wanting with regard to the use of new exotic parasitoids against olive fruit fly, Bactrocera (=Dacus) oleae (Gmelin) (Diptera: Tephritidae), a serious pest of olives Olea europaea L., in the Mediterranean basin. We investigated the oviposition response and developmental biology on B. oleae of Fopius (=Biosteres) arisanus (Sonan) (=Opius oophilus Fullaway) (Hymenoptera: Braconidae), an egg-pupal parasitoid of tephritid fruit flies, never tested before as a potential parasitoid of this host. Our results showed that olive fruits infested with B. oleae eggs exerted a relevant attraction to gravid F. arisanus and represented a stimulus for oviposition. Nevertheless they were not as attractive to female parasitoids as the Mediterranean fruit fly, Ceratitis capitata Wiedemann (Diptera: Tephritidae), eggs infested papaya fruits (Carica papaya L.). In our experimental conditions, F. arisanus completed development in B. oleae within 33 ± 1.7 days (males) and 35 ± 1.6 (females). Increases in host egg to female parasitoid ratios of 1:1, 5:1, 10:1 and 20:1 corresponded with decreases in the percentage of B. oleae parasitisation and host killing but corresponded also with increases in absolute parasitisation. Our findings are discussed in light of possibilities of utilising F. arisanus for biological control of olive fruit fly.
38 citations
TL;DR: A phylogenetic analysis of 34 tephritid taxa, including 16 species of the tribe Dacini, utilizing 1,391 bp from the mitochondrial 16S rRNA, 12S r RNA, and cytochrome oxidase II + tRNALys + tRNAAsp genes suggested the following with strong quantitative support: the subfamilies Tephritinae and Trypetinae are monophyletic, and members of the subtribe Dacina are mon
Abstract: The tribe Dacini (Diptera: Tephritidae: Trypetinae) currently consists of 40 genera and 1,000 described species. Among others, it includes the genera Bactrocera, Ceratitis, and Dacus, all of which are pests of agricultural importance because they oviposit in ripening fruit. Although previous studies, based on morphological and molecular data, suggested that the members of Dacini are monophyletic, no extensive molecular phylogenetic studies have been published on Bactrocera, Ceratitis ,o rDacus. Therefore, we undertook a phylogenetic analysis of 34 tephritid taxa, including 16 species of the tribe Dacini, utilizing 1,391 bp from the mitochondrial 16S rRNA, 12S rRNA, and cytochrome oxidase II tRNALys tRNAAsp genes. Combined maximum parsimony analysis sug- gested the following with strong quantitative support: (1) the subfamilies Tephritinae and Trypetinae are monophyletic, (2) Dacini is monophyletic, and (3) members of the subtribe Dacina are mono- phyletic. In addition, Ceratitidina Gastrozonina are basal to Dacina. Within Dacina, Dacus and Bactrocera were each monophyletic. The results obtained here are generally congruent with those based on morphology.
30 citations
TL;DR: Application of a novel double intramolecular hetero-Michael addition (DIHMA) strategy to spiroketal synthesis was illustrated by a concise synthesis of (±)-(4S*,6S*)-4-hydroxy-1,7-dioxaspiro[5.5]undecane, a Dacus oleae olive fly pheromone.
23 citations
Journal Article•
7 citations
1 Jan 2002
TL;DR: The genus Dacus Fabricius from China is revised and a new species is described, D. (Dacus) hainanus Wang Zhao.
Abstract: The genus Dacus Fabricius from China is revised.The following 13 species are presently recognized:Dacus(Callantra)bannatus(wang),D.(C.)bispinosus(wang),D.(C.)esakii(Shiraki),D.(C.)formosanus(Tseng &Chu),D.(C.)haikouensis sp.nov.,D.(C.)longicornis Wiedemann,D.(C.)nummularius(Bezzi),D.(C.)polistiformis(Senior-White),D.(C.)satanas(Hering).D.(C.)sinensis(Wang),D.(C.)sphaeroidalis(Bezzi),D.(C.)trimacula(Wang)and D.(Dacus)hainanus Wang &Zhao.In addition to description and illustrations of a new species,a check list and key to the species are provided.
3 citations