| transmission of pineapple mealybug wilt-associated virus by two species of mealybug (dysmicoccus spp.). | abstract closterovirus-like particles associated with mealybug wilt of pineapple were acquired and transmitted by the pink pineapple mealybug, dysmicoccus brevipes, and the gray pineapple mealybug, d. neobrevipes. mealybugs acquired pineapple mealybug wilt-associated virus (pmwav) from infected pineapple plants or detached leaves. the virus was detected in plants by tissue blot immunoassay and confirmed by immunosorbent electron microscopy. plants exposed to mealybugs reared on pmwav-free pineap ... | 1998 | 18944858 |
| sex pheromone of a coccoid insect with sexual and asexual lineages: fate of an ancestrally essential sexual signal in parthenogenetic females. | sex pheromones play a central role in intersexual communication for reproduction in many organisms. particularly in insects, reproductive isolation that leads to speciation is often achieved by shifts of pheromone chemistries. however, the divergence and evolution of pheromones remain largely unknown. this study reveals a unique evolutionary consequence for terpenoid pheromones in coccoid insects. coccoids, such as mealybugs, show clear sexual dimorphism: males are dwarf and short-lived, whereas ... | 2017 | 28250102 |
| sexual versus asexual reproduction: distinct outcomes in relative abundance of parthenogenetic mealybugs following recent colonization. | asexual reproduction, including parthenogenesis in which embryos develop within a female without fertilization, is assumed to confer advantages over sexual reproduction, which includes a "cost of males." sexual reproduction largely predominates in animals, however, indicating that this cost is outweighed by the genetic and/or ecological benefits of sexuality, including the acquisition of advantageous mutations occurring in different individuals and the elimination of deleterious mutations. but t ... | 2016 | 27322381 |
| phylogeography of pink pineapple mealybugs, dysmicoccus brevipes (cockerell) reveals the history of pineapple introduction and cultivation in china. | the pink pineapple mealybug (ppm), dysmicoccus brevipes (cockerell) (hemiptera: pseudococcidae), is a widespread plant-sucking insect of considerable concern because it transmits the pineapple mealybug wilt-associated virus. its distribution is closely linked with its host, the pineapple [ananas comosus (l.) merrill] because of its wingless and parthenogenetic characteristics. to investigate the history of d. brevipes introduction and the cultivation of pineapple in china, samples of d. brevipes ... | 2015 | 26345923 |
| identification of mealybug pest species (hemiptera: pseudococcidae) in egypt and france, using a dna barcoding approach. | pseudococcidae (mealybugs) is a large taxonomic group, including a number of agronomic pests. taxonomic identification of mealybug species is a recurrent problem and represents a major barrier to the establishment of adequate pest management strategies. we combined molecular analysis of three dna markers (28s-d2, cytochrome oxidase i and internal transcribed spacer 2) with morphological examination, for the identification of 176 specimens collected from 40 mealybug populations infesting various ... | 2012 | 22360997 |
| integrative taxonomy methods reveal high mealybug (hemiptera: pseudococcidae) diversity in southern brazilian fruit crops. | the serra gaúcha region is the most important temperate fruit-producing area in southern brazil. despite mealybugs (hemiptera: pseudococcidae) infesting several host plants in the region, there is a lack of information about the composition of species damaging different crops. a survey of mealybug species associated with commercial fruit crops (apple, persimmon, strawberry and grapes) was performed in serra gaúcha between 2013 and 2015, using both morphology and dna analyses for species identifi ... | 2017 | 29147020 |
| molecular and morphological identification of mealybug species (hemiptera: pseudococcidae) in brazilian vineyards. | mealybugs (hemiptera: pseudococcidae) are pests constraining the international trade of brazilian table grapes. they damage grapes by transmitting viruses and toxins, causing defoliation, chlorosis, and vigor losses and favoring the development of sooty mold. difficulties in mealybug identification remain an obstacle to the adequate management of these pests. in this study, our primary aim was to identify the principal mealybug species infesting the major table grape-producing regions in brazil, ... | 2014 | 25062012 |