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	Provedor de dados Rev. Bras. Zool. (1) Naturalis (1) Autor Mattos,Ingrid (1) Mermudes,José Ricardo M. (1) Moura,Mauricio O. (1) Palmer, A.R. (1) Palavra-chave Polyphenism (2) 42.21 (1) Acari (1) Adaptive significance (1) Anthribinae (1) Crabs (1) Crustacea (1) Developmental models (1) Diptera (1) Flies (1) Hemiptera (1) Insecta (1) Lobsters (1) Mites (1) Morphological asymmetry (1) Morphometry (1) Sexual dimorphism (1) Shrimp (1) Stochastic development (1) True bugs (1) Mais... Tipo do documento Article / Letter to the editor (1) Info:eu-repo/semantics/article (1) Ano 2014 (1) 2012 (1) País Brazil (1) Netherlands (1) Idioma Inglês (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Developmental origins of normal and anomalous random right-left asymmetry: lateral inhibition versus developmental error in a threshold trait Naturalis Palmer, A.R.. Dramatic examples of right-left asymmetry often inspire adaptive explanations, simply because it is hard to imagine how such forms could not be functionally significant. But are conspicuous morphological asymmetries necessarily adaptive? Surprisingly, in some species where direction of asymmetry is random, asymmetry in bilaterally paired traits may arise as a developmental error in a threshold trait. When cases of asymmetry are rare within a species, they are easily recognized as developmental errors. However, as asymmetrical individuals become more common, or if the asymmetry is in a signaling trait, the temptation to advance an adaptive explanation grows, particularly if the asymmetry is not clearly maladaptive. Several models of the ontogeny of... Tipo: Article / Letter to the editor Palavras-chave: Acari; Adaptive significance; Crabs; Crustacea; Developmental models; Diptera; Flies; Hemiptera; Insecta; Lobsters; Mites; Morphological asymmetry; Polyphenism; Shrimp; Stochastic development; True bugs; 42.21. Ano: 2012 URL: http://www.repository.naturalis.nl/record/419175 Dimorphism and allometry of Systaltocerus platyrhinus and Hypselotropis prasinata (Coleoptera: Anthribidae) Rev. Bras. Zool. Mattos,Ingrid; Mermudes,José Ricardo M.; Moura,Mauricio O.. Males of sexually dimorphic anthribid species display structural modifications that suggest sexual selection. Polyphenism, which is expressed through morphological and behavioral novelties, is an important component of the evolutionary process of these beetles. In this study, we endeavored to ascertain the presence of variations in selected monomorphic traits, polyphenism in males, and variation in structures associated with sexual dimorphism and allometric patterns in two species: Systaltocerus platyrhynus Labram & Imhoff, 1840 and Hypselotropis prasinata (Fahraeus, 1839). To that end, we used Principal Components Analysis (PCA) and Canonical Variate analysis (CVA) to statistically analyze 26 measurements of 91 specimens. The PCA discriminated... Tipo: Info:eu-repo/semantics/article Palavras-chave: Anthribinae; Morphometry; Polyphenism; Sexual dimorphism. Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702014000100007 Registros recuperados: 2 Primeira ... 1 ... Última

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