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A note on the systematic position of the Bathynellacea (Crustacea, Malacostraca) using molecular evidence Naturalis
Camacho, Ana Isabel; Rey, Isabel; Dorda, Beatriz A.; Machordom, Annie; Valdecasas, Antonio G..
Molecular data for the mt 16S rDNA gene fragment of a bathynellacean is here presented for the first time and used to analyze the relationship of the group within the crustacean class Malacostraca (Arthropoda, Bathynellacea). Two contrasting views have classified the bathynelids as being cither within the order Syncarida or in a separate super-order Podophallocarida belonging to the infra-class Eonomostraca, a disagreement based mainly on debates over external and internal morphology. The preliminary analyses offered here in question the placement of this Bathynellacea within the Syncarida, and suggest the need for a further study of relationships among the malacostracan groups.
Tipo: Article / Letter to the editor Palavras-chave: Systematics; Crustacea; Malacostraca; Bathynellacea; 16S rDNA.
Ano: 2002 URL: http://www.repository.naturalis.nl/record/534365
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Does biogeography have a future in a globalized world with globalized faunas? Naturalis
Schram, F.R..
The study of biogeography was once a pillar of evolution science. Both Darwin and especially Wallace found great inspiration from the consideration of animal distributions. However, what is to happen to this discipline in a time of global trade, mass movement of people and goods, and the resulting globalization of the planet’s biota? Can we still hope to delve into the fine points of past geography as it affected animal and plant evolution? Maybe we can, but only with careful study of life forms that suffer minimal affects – at present – from globalization, viz., marginal faunas of quite inaccessible environments. Two examples taken from syncarid crustaceans illustrate this point. Bathynellacea provide insight into ancient patterns of distribution and...
Tipo: Article / Letter to the editor Palavras-chave: Anaspidacea; Bathynellacea; Globalization; Historical biogeography; Vicariance; 42.74.
Ano: 2008 URL: http://www.repository.naturalis.nl/record/280481
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