Growth-pattern variation in two species of Rheumatobates (Heteroptera: Gerridae) with different degrees of sexual dimorphism

Growth patterns of Rheumatobates crassifemur crassifemur Esaki and R. bonariensis (Berg) were compared in a multivariate framework. Study of allometric coefficients in R. bonariensis showed sexual differences biased towards males in antennal and foreleg segments and biased towards females in body le...

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Detalles Bibliográficos
Autores principales: Iglesias, M.S., Crespo, F.A.
Formato: JOUR
Materias:
age-related difference
allometry
biological development
comparative study
detection method
growth
insect
morphology
multivariate analysis
sexual dimorphism
Gerridae
Heteroptera
Rheumatobates
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_0008347X_v140_n3_p380_Iglesias
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
Descripción
Sumario:Growth patterns of Rheumatobates crassifemur crassifemur Esaki and R. bonariensis (Berg) were compared in a multivariate framework. Study of allometric coefficients in R. bonariensis showed sexual differences biased towards males in antennal and foreleg segments and biased towards females in body length and middle-leg segments. Multivariate allometric analysis of female growth patterns detected variation among species in those characters that are strongly modified in males of R. c. crassifemur. We show that sexual morphology diverges as of nymph V in R. c. crassifemur but only in the adults of R. bonariensis. © 2008 Entomological Society of Canada.

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