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Scholtz, G.. |
Compared with the elongate bodies of shrimps or lobsters, crabs are characterised by a compact body organisation with a depressed, short carapace and a ventrally folded pleon. The evolutionary transformation from a lobster-like crustacean towards a crab is called ‘carcinization’ and has been interpreted as a dramatic morphological change. Nevertheless, the crab-shape evolved convergently in a number of lineages within Decapoda. Accordingly, numerous hypotheses about internal and external factors have been presented, which all try to explain these frequent convergent carcinization events despite the seemingly fundamental changes in the body organisation. However, what a crab is lies greatly in the eye of the beholder and most of the hypotheses about the... |
Tipo: Article / Letter to the editor |
Palavras-chave: Achelata; Anomala; Brachyura; Carcinization; Convergent evolution; Morphological concepts; 21.21; 42.74. |
Ano: 2014 |
URL: http://www.repository.naturalis.nl/record/471315 |
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García,Gabriel L; Ortega-Arenas,Laura; Hernández,Héctor G; García,Agustín A; Nápoles,Jesús R; Cortés,Ramón R. |
Se describen las larvas de tercer instar de seis especies de gallinas ciegas asociadas al cultivo de agave tequilero en el estado de Jalisco, México, con base en 1,145 especimenes, de muestras de suelo, colectados de Septiembre de 2006 a Agosto de 2007, en los municipios de Ixtlahuacán del Río, Tepatitlán de Morelos y San Juan de Escobedo, Jalisco, México. Se incluyen ilustraciones diagnósticas y una clave para el reconocimiento de las especies. Cyclocephala comata (Bates) fue la especie más abundante (63.2%), seguida por Phyllophaga ravida (Blanchard) (21.9%), Phyllophaga polyphylla (Bates) (9.4%), Phyllophaga misteca (Bates) (4.1%), Strategus aloeus (L.) (1.1%) y Anomala hoepfneri (Bates) (0.3%). Phyllophaga ravida y A. hoepfneri se reportan por primera... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Phyllophaga; Cyclocephala; Anomala; Gallina ciega. |
Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2009000600010 |
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