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	Provedor de dados Naturalis (5) Autor Keiler, J. (2) Lemaitre, Rafael (2) McLaughlin, Patsy A. (2) Richter, S. (2) Wirkner, C.S. (2) Scholtz, G. (1) Tudge, Christopher C. (1) Mais... Palavra-chave Carcinization (5) Anomala (3) 42.74 (2) Anomura (2) Evolutionary morphology (2) Lithodidae (2) Paguridae (2) Paguroidea (2) 21.21 (1) 38.22 (1) 42.62 (1) Achelata (1) Adult morphology (1) Aegla (1) Brachyura (1) Circulatory system (1) Convergent evolution (1) Galatheoidea (1) Hemolymph vascular system (1) Hippoidea (1) Mais... Tipo do documento Article / Letter to the editor (5) Ano 2016 (1) 2015 (1) 2014 (1) 2004 (1) 1997 (1) País Netherlands (5)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 5 Primeira ... 1 ... Última The anatomy of the king crab Hapalogaster mertensii Brandt, 1850 (Anomura: Paguroidea: Hapalogastridae): new insights into the evolutionary transformation of hermit crabs into king crabs Naturalis Keiler, J.; Richter, S.; Wirkner, C.S.. The emergence of king crabs from a hermit crab-like ancestor is one of the most curious events in decapod evolution. King crabs comprise two taxa, Lithodidae and Hapalogastridae, and while lithodids have formed the focus of various anatomical studies, the internal anatomy of hapalogastrids has never been studied although this group might represent a more ancestral morphological condition within king crabs than lithodids do. To better understand the evolutionary transformation of pagurid-like hermit crabs into king crabs, we studied the hemolymph vascular system and associated organs of representatives of Hapalogaster and present here the first micro-computer tomography data pertaining to the internal anatomy of hapalogastrids. Our results for... Tipo: Article / Letter to the editor Palavras-chave: Anomala; Carcinization; Circulatory system; Evolutionary morphology; Structural coherence; Variability; 42.74; 38.22; 42.62. Ano: 2015 URL: http://www.repository.naturalis.nl/record/579455 Revealing their innermost secrets: an evolutionary perspective on the disparity of the organ systems in anomuran crabs (Crustacea: Decapoda: Anomura) Naturalis Keiler, J.; Richter, S.; Wirkner, C.S.. The Southern Australian crustacean species Lomis hirta (Lomisoidea: Lomisidae) is a representative of one of the three anomuran taxa which obtained their crab-like habitus independently from each other. This process, the evolutionary transformation into a crab-like form, is termed carcinization. To shed light on the morphological changes which took place during carcinization and to investigate structural dependence (coherence) between external and internal morphological characters, we studied L. hirta and representatives of its putatively most closely related taxa, Aegla cholchol (Aegloidea: Aeglidae) and Kiwa puravida (Chirostyloidea: Kiwaidae). External and internal anatomy was studied using microcomputertomography and computer-aided 3D reconstruction.... Tipo: Article / Letter to the editor Palavras-chave: Aegla; Anomala; Carcinization; Evolutionary morphology; Hemolymph vascular system; Kiwa; Lomis; Nervous system. Ano: 2016 URL: http://www.repository.naturalis.nl/record/619253 Evolution of crabs – history and deconstruction of a prime example of convergence Naturalis 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 Carcinization in the Anomura – fact or fiction? I. Evidence from adult morphology Naturalis McLaughlin, Patsy A.; Lemaitre, Rafael. Carcinization, or the process of becoming a crab, has been, and continues to be, a focal point of anomuran evolutionary hypotheses. Traditional examples of carcinization in the Anomura are most celebrated among hermit crabs but certainly are not limited to this group. Carcinization, if it has occurred, has done so independently in all major anomuran taxa. In this critique, the traditional examples of carcinization in the Anomura are reviewed and more modern variations on the theme assessed. Potential pathways of carcinization are examined from perspectives of adult morphology in the Paguroidea, Galatheoidea, Hippoidea and Lomoidea, with emphasis on the Paguroidea. Specific attention is given to the theoretical transformation of a hermit crab-like body form... Tipo: Article / Letter to the editor Palavras-chave: Carcinization; Anomura; Paguroidea; Galatheoidea; Hippoidea; Lomoidea; Paguridae; Lithodidae; Adult morphology; Phylogeny. Ano: 1997 URL: http://www.repository.naturalis.nl/record/534415 Carcinization in the Anomura – fact or fiction? II. Evidence from larval, megalopal and early juvenile morphology Naturalis McLaughlin, Patsy A.; Lemaitre, Rafael; Tudge, Christopher C.. In this second of a two-part series, carcinization in the Anomura has been reviewed from early juvenile, megalopal, and larval perspectives. Data from megalopal and early juvenile development in ten genera of the Lithodidae have provided unequivocal evidence that earlier hypotheses regarding evolution of the king crab pleon were erroneous. A pattern of sundering, and decalcification has been traced from the megalopal stage through several early crabs stages in species of Lithodes and Paralomis, with supplemental evidence from species in eight other genera. Of major significance has been the attention directed to the marginal plates of the second pleomere, which when separated in lithodids are not homologous with the adult so-called “marginal plates” of the... Tipo: Article / Letter to the editor Palavras-chave: Carcinization; Anomura; Paguroidea; Lithodidae; Paguridae; Lomisidae; Porcellanidae; Larval; Megalopal and early juvenile morphology; Pleonal tergites. Ano: 2004 URL: http://www.repository.naturalis.nl/record/534278 Registros recuperados: 5 Primeira ... 1 ... Última

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