Please use this identifier to cite or link to this item: https://repositorio.inpa.gov.br/handle/1/14535
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dc.contributor.authorAlvan-Aguilar, Miriam Adriana-
dc.contributor.authorHamada, Neusa-
dc.date.accessioned2020-04-24T16:49:32Z-
dc.date.available2020-04-24T16:49:32Z-
dc.date.issued2003-
dc.identifier.urihttps://repositorio.inpa.gov.br/handle/1/14535-
dc.description.abstractThe number of larval instars of Simulium (Hemicnetha) rubrithorax Lutz (Diptera: Nematocera) was determined using the lateral length of the head capsule. In this study 1,035 larvae, of different sizes, were measured (639 from the state of Roraima and 396 from the state of Minas Gerais). A frequency distribution analysis was carried out on the measurements of the lateral length of the head capsule to determine the number of larval instars. The limits of each instar were defined by the lower frequency of the measurements falling in a range of values, by the presence of the "egg burster" that characterizes the first larval instar, and by the developmental stage of the gill histoblast. The determination of the instar number was tested using a Student's t-test (p < 0.05), the Dyar rule and the Crosby growth rule. The results indicate the existence of 7 larval instars for this species, although this result was not in accordance to the Crosby rule. Last-instar larvae from two widely separated geographical populations (Roraima and Minas Gerais), collected in habitats with different water temperature were compared and no differences (p > 0.05) were observed between them.en
dc.language.isoenpt_BR
dc.relation.ispartofVolume 98, Número 4, Pags. 507-511pt_BR
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Brazil*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/br/*
dc.subjectWateren
dc.subjectAnalysisen
dc.subjectBiometryen
dc.subjectComparative Studyen
dc.subjectControlled Studyen
dc.subjectDevelopmental Stageen
dc.subjectEggen
dc.subjectFlyen
dc.subjectFrequency Analysisen
dc.subjectGeographical Variation (species)en
dc.subjectGillen
dc.subjectGrowthen
dc.subjectHeaden
dc.subjectLarvaen
dc.subjectMeasurementen
dc.subjectNonhumanen
dc.subjectPopulationen
dc.subjectSimuliumen
dc.subjectSimulium Rubrithoraxen
dc.subjectSpeciesen
dc.subjectStudent T Testen
dc.subjectWater Temperatureen
dc.subjectAnimalsen
dc.subjectFemaleen
dc.subjectFlyen
dc.subjectGrowth, Development And Agingen
dc.subjectHistologyen
dc.subjectLarvaen
dc.subjectMaleen
dc.subjectTemperatureen
dc.subjectDipteraen
dc.subjectHexapodaen
dc.subjectNematoceraen
dc.subjectSimuliidaeen
dc.subjectSimulium Nigricoxumen
dc.subjectSimulium Rubrithoraxen
dc.subjectAnimalen
dc.subjectBiometryen
dc.subjectFemaleen
dc.subjectLarvaen
dc.subjectMaleen
dc.subjectSimuliidaeen
dc.subjectTemperatureen
dc.titleLarval Biometry of Simulium rubrithorax (Diptera: Simuliidae) and Size Comparison between Populations in the States of Minas Gerais and Roraima, Brazilen
dc.typeArtigopt_BR
dc.identifier.doi10.1590/S0074-02762003000400015-
dc.publisher.journalMemórias do Instituto Oswaldo Cruzpt_BR
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