The origins of symbiosis as a lifestyle in marine crabs (genus Petrolisthes) from the eastern Pacific: Does interspecific competition play a role?

The adoption of a symbiotic lifestyle is one of the main environmental adaptations in marine crustaceans. Interspecific competition might be considered important in explaining the evolution of symbiosis in this and other groups of marine invertebrates. Here, the historical origin of symbiosis as a l...

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Autor principal:	Baeza,J. Antonio
Lenguaje:	English
Publicado:	Universidad de Valparaíso. Facultad de Ciencias del Mar 2007
Materias:	Symbiosis evolution competition phylogeny comparative method Petrolisthes
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-19572007000100002
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spelling	oai:scielo:S0718-195720070001000022007-07-26The origins of symbiosis as a lifestyle in marine crabs (genus Petrolisthes) from the eastern Pacific: Does interspecific competition play a role?Baeza,J. Antonio Symbiosis evolution competition phylogeny comparative method Petrolisthes The adoption of a symbiotic lifestyle is one of the main environmental adaptations in marine crustaceans. Interspecific competition might be considered important in explaining the evolution of symbiosis in this and other groups of marine invertebrates. Here, the historical origin of symbiosis as a lifestyle in marine crabs (genus Petrolisthes) from the eastern Pacific was examined, and the evolutionary role of intra-guild interspecific competition in explaining this ecological trait was explored. A previously published phylogenetic hypothesis for 29 species of Petrolisthes generated by Minimum Evolution and Maximum Parsimony methods of inference (using sequences of 16s rRNA mitochondrial DNA as a genetic marker) was used as framework for this analysis. When the lifestyle of each species was mapped onto the phylogenetic tree for Petrolisthes, a free-living habit was inferred to be the ancestral character state and symbiosis appeared to evolve independently at least twice in this group. Crabs with symbiotic associations occur in temperate waters in the southern hemisphere; Allopetrolisthes spinifrons inhabiting sea anemones, and Liopetrolisthes mitra inhabiting sea urchins. A comparative analysis by independent contrasts suggested that interspecific competition is not important in explaining either the evolution of symbiosis or the occurrence of less frequent partnerships between Petrolisthes crabs and other macroinvertebrates. On the other hand, the adoption of a symbiotic lifestyle has important consequences for the social life of crabs. Symbiotic crabs are proposed as model system to examine the role of the environment in shaping the social behavior of marine invertebratesinfo:eu-repo/semantics/openAccessUniversidad de Valparaíso. Facultad de Ciencias del MarRevista de biología marina y oceanografía v.42 n.1 20072007-04-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-19572007000100002en10.4067/S0718-19572007000100002
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Symbiosis evolution competition phylogeny comparative method Petrolisthes
spellingShingle	Symbiosis evolution competition phylogeny comparative method Petrolisthes Baeza,J. Antonio The origins of symbiosis as a lifestyle in marine crabs (genus Petrolisthes) from the eastern Pacific: Does interspecific competition play a role?
description	The adoption of a symbiotic lifestyle is one of the main environmental adaptations in marine crustaceans. Interspecific competition might be considered important in explaining the evolution of symbiosis in this and other groups of marine invertebrates. Here, the historical origin of symbiosis as a lifestyle in marine crabs (genus Petrolisthes) from the eastern Pacific was examined, and the evolutionary role of intra-guild interspecific competition in explaining this ecological trait was explored. A previously published phylogenetic hypothesis for 29 species of Petrolisthes generated by Minimum Evolution and Maximum Parsimony methods of inference (using sequences of 16s rRNA mitochondrial DNA as a genetic marker) was used as framework for this analysis. When the lifestyle of each species was mapped onto the phylogenetic tree for Petrolisthes, a free-living habit was inferred to be the ancestral character state and symbiosis appeared to evolve independently at least twice in this group. Crabs with symbiotic associations occur in temperate waters in the southern hemisphere; Allopetrolisthes spinifrons inhabiting sea anemones, and Liopetrolisthes mitra inhabiting sea urchins. A comparative analysis by independent contrasts suggested that interspecific competition is not important in explaining either the evolution of symbiosis or the occurrence of less frequent partnerships between Petrolisthes crabs and other macroinvertebrates. On the other hand, the adoption of a symbiotic lifestyle has important consequences for the social life of crabs. Symbiotic crabs are proposed as model system to examine the role of the environment in shaping the social behavior of marine invertebrates
author	Baeza,J. Antonio
author_facet	Baeza,J. Antonio
author_sort	Baeza,J. Antonio
title	The origins of symbiosis as a lifestyle in marine crabs (genus Petrolisthes) from the eastern Pacific: Does interspecific competition play a role?
title_short	The origins of symbiosis as a lifestyle in marine crabs (genus Petrolisthes) from the eastern Pacific: Does interspecific competition play a role?
title_full	The origins of symbiosis as a lifestyle in marine crabs (genus Petrolisthes) from the eastern Pacific: Does interspecific competition play a role?
title_fullStr	The origins of symbiosis as a lifestyle in marine crabs (genus Petrolisthes) from the eastern Pacific: Does interspecific competition play a role?
title_full_unstemmed	The origins of symbiosis as a lifestyle in marine crabs (genus Petrolisthes) from the eastern Pacific: Does interspecific competition play a role?
title_sort	origins of symbiosis as a lifestyle in marine crabs (genus petrolisthes) from the eastern pacific: does interspecific competition play a role?
publisher	Universidad de Valparaíso. Facultad de Ciencias del Mar
publishDate	2007
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-19572007000100002
work_keys_str_mv	AT baezajantonio theoriginsofsymbiosisasalifestyleinmarinecrabsgenuspetrolisthesfromtheeasternpacificdoesinterspecificcompetitionplayarole AT baezajantonio originsofsymbiosisasalifestyleinmarinecrabsgenuspetrolisthesfromtheeasternpacificdoesinterspecificcompetitionplayarole
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The origins of symbiosis as a lifestyle in marine crabs (genus Petrolisthes) from the eastern Pacific: Does interspecific competition play a role?

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