Now showing items 31-40 of 1254
Action of the insect growth regulator fluazuron, the active ingredient of the acaricide Acatak®, in Rhipicephalus sanguineus nymphs (Latreille, 1806) (Acari: Ixodidae)
The present study evaluated the efficacy of fluazuron (active ingredient of the acaricide Acatak®) and its effects on Rhipicephalus sanguineus nymphs fed on rabbits exposed to different doses of this insect growth regulator. ...
Description of immatures and association with adults of three species of Anacroneuria Klapalek (Plecoptera: Perlidae) of the Brazilian Amazon
(Magnolia Press, 2014-11-03)
Nymphs of three species of the genus Anacroneuria Klapalek, 1909, A. marlieri Froehlich, 2001; A. minuta Klapalek, 1922, and A. manauensis Ribeiro-Ferreira, 2001 are described. The associations of nymphs with adults were ...
Composition and diversity of Ephemeroptera (Insecta) nymph communities in the middle section of the Jacui River and some tributaries, southern Brazil
(FUNDACAO ZOOBOTANICA RIO GRANDE SUL, MUSEU CIENCIAS NATURAIS, 2008)
The taxonomic composition and diversity of assemblages of Ephemeroptera nymphs of four lotic environments in the central region of State of Rio Grande do Sul, a subtropical area in southern Brazil, were evaluated. Samplings ...
Morphological description of the nymphal stage of Amblyomma geayi and new nymphal records of Amblyomma parkeri
The external morphology of the nymph of Amblyomma geayi Neumann is described by optical and scanning electron microscopy. Unfed nymphs were obtained from an engorged A. geayi female, which had been collected on a sloth ...
Additional information for Leptoglossus impictus (Stål 1859) (Hemiptera: Heteroptera: Coreidae: Coreinae: Anisoscelini) from Patagonia, Argentina
(Magnolia Press, 2016-01)
The Patagonian subregion belongs to the Andean region, and is comprised of two provinces: Central Patagonia and Subandean Patagonia. It extends from central Mendoza, widening through Neuquén, Río Negro, Chubut, and Santa ...
Taxonomic key to nymphs of the genus Amblyomma (Acari: Ixodidae) in Argentina, with description and redescription of the nymphal stage of four Amblyomma species
In the present study, we provide morphological descriptions of the nymph of Amblyomma parvitarsum, A. tonelliae, and redescriptions of A. argentinae and A. sculptum. A taxonomic key, with relevant morphological characters ...
New insights into the infection of the American cockroach Periplaneta americana nymphs with Metarhizium anisopliae s.l. (Ascomycota: Hypocreales)
(Wiley Blackwell Publishing, Inc, 2016-11)
Aims: To study the marked resistance of Periplaneta americana to entomopathogenic Metarhizium anisopliae. Methods and Results: The low susceptibility of 4th instar nymphs applied topically with conidia seemed to be related ...
Successful Feeding of Amblyomma coelebs (Acari: Ixodidae) Nymphs on Humans in Brazil: Skin Reactions to Parasitism.
(Journal of Medical Entomology, p. 1-3, 2015., 2015)
Antigen-presenting cells in draining lymph nodes of goats repeatedly infested by the Cayenne tick Amblyomma cajennense nymphs
Resistance to tick feeding has been previously shown to be an acquired, immunologically mediated phenomenon in goats, associated with cutaneous basophilia to nymphs of Amblyomma cajennense, the Cayenne tick, after repeated ...