Publications

sex pheromone of the oleander scale, aspidiotus nerii: structural characterization and absolute configuration of an unusual functionalized cyclobutane.	the sex pheromone emitted by the female oleander scale, aspidiotus nerii (homoptera, diaspididae), has been isolated and characterized as (1r, 2s)-cis-2-isopropenyl-1-(4'-methyl-4'-penten-1'-yl)cyclobutaneethanol acetate by using advanced ms and nmr spectroscopic methods, as well as a variety of microderivatization sequences. the structure has been confirmed by stereo- and enantioselective synthesis of the four possible stereoisomers. the absolute configuration has been determined by comparison ...	1998	9707567
survey of scale insects of ornamental plants in alexandria governorate, egypt.	this investigation covers a survey of the scale insects associating with some ornamental plants at three chosen public gardens as well as at the experimental farm of the agricultural research station in alexandria governorate, egypt. a total of nineteen scale insect species belonging to sixteen genera related to four families of the super-family coccoidea were found infesting eighteen ornamental plants during the period from april, 1998 up to march, 1999. these species are: family: asterolecanii ...	2001	12425080
searching behaviour in chilocorus nigritus (f.) (coleoptera: coccinellidae).	chilocorus spp are generalist predators of armoured scale insects. c. nigritus is a common predator; however there are several gaps in the literature regarding aspects of its behaviour and general ecology. the study was conducted in order to examine the foraging behaviour of this coccidophagous species on the biparental strain of the diaspid, aspidiotus nerii bouché (homoptera: diaspididae), a widely distributed polyphagous pest. unlike many other coccoidea, diaspids do not produce honeydew and ...	2006	17390801
a regional analysis of weather mediated competition between a parasitoid and a coccinellid predator of oleander scale.	the regulation of an asexual population of the oleander scale [aspidiotus nerii bouchè (hemiptera: diaspididae)] on california bay tree [umbellularia californica (hopk. & arn.) nut.] by two natural enemies; an idiobiont, ectoparasitoid aphytis chilensis howard (hymenoptera: aphelinidae) and a coccinellid predator (rhysobius lophanthae (blaisd.) (coleoptera: coccinellidae), was examined using a general weather-driven, tri-trophic, physiologically based age-mass structured demographic model. the m ...	2017	17420864
dna diagnostics of three armored scale species on kiwifruit in new zealand.	three species of armored scale (hemiptera: diaspididae) are found on kiwifruit (actinidia spp.) in new zealand orchards: latania scale, hemiberlesia lataniae (signoret); greedy scale, hemiberlesia rapax (comstock); and oleander scale, aspidiotus nerii (bouché). each of them is a quarantine pest in some of the markets to which new zealand kiwifruit are exported. adult females of the three species can be distinguished morphologically; however, the task is laborious when large numbers must be ident ...	2008	19133478
tritrophic effects on survival and development in a coccidophagous coccinellid.	chilocorus nigritus is currently considered one of the most successful biological control agents of armoured scale insects. however, establishment of this beetle in crop pest situations has not always been successful and there are still gaps in our knowledge of its ecology and behaviour. the research involved an examination of tritrophic effects on the survival and development of this common diaspid predator. the effect of a forced change in host plant on the developmental time of the juvenile s ...	2008	19226777
phoretic dispersal of armored scale crawlers (hemiptera: diaspididae).	dispersal and colonization of new areas by armored scale insects (hemiptera: diaspididae) is achieved by mobile first-instar nymphs, called crawlers. few studies have considered the actual mechanisms by which crawlers disperse, and although crawlers are capable of actively wandering over short distances (generally < 1 m), their dispersal over longer distances has been thought to be wind-mediated. here, we present evidence of a potentially more important means of dispersal over longer distances ( ...	2010	20857725
postteneral protein feeding may improve biological control efficiency of aphytis lingnanensis and aphytis melinus.	the augmentative releases of mass-reared aphytis spp. (hymenoptera: aphelinidae) parasitoids are widely used against armored scales. the nutritional status and the initial egg load of aphytis spp. females are key to their success as biological control agents. for these reasons, this work focuses on the study of providing a protein feed to aphytis lingnanensis (compere) and a. melinus debach to improve the egg load before their release. the addition of protein to a honey diet during the first 2 d ...	2014	25502042
genetic diversity of armored scales (hemiptera: diaspididae) and soft scales (hemiptera: coccidae) in chile.	scale insects (sternorrhyncha: coccoidea) are one of the most invasive and agriculturally damaging insect groups. their management and the development of new control methods are currently jeopardized by the scarcity of identification data, in particular in regions where no large survey coupling morphological and dna analyses have been performed. in this study, we sampled 116 populations of armored scales (hemiptera: diaspididae) and 112 populations of soft scales (hemiptera: coccidae) in chile, ...	2017	28515435