This study investigated rickettsial infection in Amblyomma auricularium ticks from the state of Pernambuco, northeastern Brazil. An engorged female of A. auricularium collected from a skunk (Conepatus semistriatus) was sent alive to the laboratory, where the female was found through molecular analysis to be infected by Rickettsia amblyommii. This engorged female oviposited, and its offspring wa...

The development of the nematode Spinitectus inermis (Zeder, 1800), a parasite of the stomach of eels, Anguilla anguilla (L.) in Europe, was experimentally studied. Mayfly nymphs Caenis macrura, Ecdyonurus dispar, Heptagenia sulphurea, Potamanthus luteus and Seratella ignita from Portugal and the Czech Republic were found to serve as experimental intermediate hosts. After ingestion of the nemato...

The present work aims at learning the period of resistance to starvation (molting/death) of Triatoma rubrofasciata in different stages of development and the respective loss of weight until death. Eggs of specimens from the greater area of the city of São Luis in the State of Maranhão, Brazil, yielded approximately 300 nymphs. These nymphs were placed in labelled Borrel glasses, in which they w...

The recent spread of the African citrus psyllid, Trioza erytreae, one vectors devastating disease, Huanglongbing (HLB), to parts mainland Europe has created considerable concern. In this study, we show efficacy several insecticides with varying modes action on different developmental stages T. erytreae. laboratory trials, spinetoram caused highest mortality in erytreae eggs (between 80 and 90%)...

introduction: linguatula serrata is a zoonotic parasite, belonging to the class pentastomida. the major aim of this study was to evaluate the impact of sodium chloride (nacl) and heat on survival time of linguatula serrata nymphs. materials & methods: thirty nymphs (10 in triplicate) were separately transferred to plastic tubes, containing different concentrations of nacl solution (2%, 5% and 1...

abstract the aphid parasitoids, aphidius colemnai viereck and a. matricariae (haliday) (hymenoptera: braconidae: aphidiinae) have high potential as the most effective biological control agents for controlling the cotton aphis aphis gossypii glover (hemiptera: aphididae). in this investigation, the effect of five constant temperatures (10, 15, 20, 25 and 30 °c) on the reproductive parameters was...

functional response of stethorus gilvifrons mulsant to varying densities of different developmental stages of eutetranychus orientalis klein was examined in a simplified castor bean leaf disc arena under the laboratory condition. one s.gilvifrons female was isolated individually for 24h with different prey densities (4,8,12,24,48,96,120) at 300c and photoperiod of 14:10 (l:d) h. the number of p...

The present paper presents evidence of the domiciliation of Panstrongylus rufotuberculatus in La Gardenia, Colombia through the collection of 2 unhatched eggs, 81 nymphs and 10 adults (4 males and 6 females), from 2 rural houses. The transmission risk indicators of Trypanosoma cruzi by P. rufotuberculatus in La Gardenia, were: domiciliary infestation 7.5%, density 2.35, colonization 66.6%, over...

Descriptions of the immature stages of Taosa (Cuernavaca) longula Remes Lenicov (Hemiptera: Fulgoroidea: Dictyopharidae) and a key for their identification is provided for specimens collected on the water hyacinth, Eichhornia crassipes (Martius) Solms-Laubach (Commelinales: Pontederiaceae), in northeastern Argentina and Peru. Newly emerged nymphs from eggs collected in the field were reared in ...