Eutrombicula alfreddugesi is prevalent across eastern and central North America. There is also evidence of E. alfreddugesi scattered across Central and South. Abstract. I collected larvae of Eutrombicula alfreddugesi for the first time parasitizing Gerrhonotus infernalis, Sceloporus poinsetti, S. jarrovii, and S. grammicus. Padrões de parasitismo por Eutrombicula alfreddugesi (Oudemans) (Acari, Trombiculidae) em três espécies de Tropidurus Wied (Squamata, Tropiduridae) do.

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Here we discuss the patterns of parasitism by larvae of Eutrombicula alfreddugesi on three species of Tropidurus Wied, from Cerrado habitat of Central Brazil, evaluating parameters such as the intensity and prevalence of parasitism, and parasite distribution over the hosts’ bodies.

Nearctic living in the Nearctic biogeographic province, the northern part of the New World. Lastly, legs project from the idiosoma six for larvae, eight for deutonymphs and adults and setae are visible throughout the idiosoma, both dorsally and ventrally.

The distribution of larval Eutrombicula alfreddugesi infesting Anolis lizards from different habitats in Hispanola. Trombiculidae and infestations on fence lizards, Sceloporus undulatus. Oxford University Press is a department of the University of Oxford. These structures seem to form microhabitats perfectly suited for occupation by mites. Seasonal changes in abundance of host-seeking chiggers Acari: The analysis did not indicate differences in intensity of infestation between sexes for alfreddugdsi of the species.

If you originally registered with a username please use that to sign in. We searched for ectoparasites in the skin folds and on the body of each lizard. Trombiculidae from Cuba, with the description of three new species.


Habitat selection of postlarval Eutrombicula alfreddugesi and Eutrombicula splendens from eight microhabitats in Georgia, USA.

Abstract Microclimatic and vegetative effects on the population size and activity patterns of larval Eutrombicula alfreddugesi Oudemans, Acari: Intensity of parasitism was significantly related to body size in Tropidurus itambere male: Another possibility is that differences are associated to mite pockets and skin fold morphology. Upon sensing a host, the larvae move up the substrate and attach on to them.

Trombicula alfreddugesi – Wikipedia

The chigger mites of Kansas. Distribution and seasonal and diurnal activity patterns of Eutrombicula alfreddugesi Acari: Their results suggest that ectoparasites do not represent a negative factor to denser populations, which would dilute the intensity of infestation across the aggregation. Chigger activity correlated with a microclimatically driven diurnal rhythm.

Eutrombicula alfreddugesi takes at minimum 55 days and on average 68 days to complete its life cycle. The length of this stage depends on the availability of food and can last anywhere from seven to 32 days. We performed a linear regression analysis to investigate the relationship between host size SVL and intensity of infestation.

This hypothesis, however, has not yet been sufficiently tested. The most important sites of infestation were the mite pockets and skin folds, especially on the neck and inguinal region.

Eutrombicula alfreddugesi is prevalent across eastern and central North America. After fertilization, the female Eutrombicula alfreddugesi lays eggs after about two weeks. These hosts include large vertebrates that are part of AvesMammaliaReptilia classes.

Differences in the patterns of parasitism among the three lizard species may be related to the morphological and numerical variation of the skin folds especially mite pocketsto eutrombocula degree of conservation of the host’s habitats, and to selective processes related to reduction of damage to the host’s bodies, to the evolution of mechanisms of decreasing illness transmission by parasites, or even to some behavioral traits of the lizards.


They parasitize reptiles, primarily lizards, and other terrestrial vertebrates eutrombiculaa as amphibians, birds, and mammals, including humans.

a,freddugesi Clopton and Gold, ; Cunha-Barros, et al. Sign in via your Institution Sign in. Tropidurus itambere has two pockets in the neck and another in the inguinal region, and had the highest intensity of infestation.

In Eutrombicula alfreddugesithere is no parental investment made by either males or females. Although chigger populations existed throughout the forest edge, larger populations concentrated in short- to tall-grass transition zones. The gnathosoma consists of chellicerae and pedipalps. Postlarval chiggers are not found in vertebrate nests or underneath tree-bark and, contrary to mainstream belief, they are not found on Spanish moss. This protects the rest of the lizard’s body from harm.

NatureLondon, Table I presents the prevalence and parasitic intensity for the lizards. Phylogenetic systematics of Crotaphytid lizards Reptilia: Though we edit our accounts for accuracy, we cannot guarantee all information in those accounts.

Eutrombicula Alfreddugesi

Tropidurus oreadicus has only two deep and oblique pockets alcreddugesi the neck region, and had the second highest intensity of infestation.

Citing articles via Web of Science The two samples of T.

Patterns of infestation by chigger mites in four diurnal lizard species from a restinga habitat Jurubatiba of Southeastern Brazil.