Life cycle of a freshwater Gondwanic remnant polychaete Stratiodrilus aeglaphilus (Annelida: Eunicida: Histriobdellidae), commensal with Aegla laevis (Crustacea: Anomura)

Within the Annelida phylum, the Histriobdellidae Family groups freshwater polychaetes sharing an ancient Gondwanic relationship; very little is known about their life histories. Here we describe the life cycle of Stratiodrilus aeglaphilus, an epibiont of the crab Aegla laevis, which inhabits rivers...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	VILA,IRMA, VÉLIZ,DAVID
Lenguaje:	English
Publicado:	Facultad de Ciencias Naturales y Oceanográficas, Universidad de Concepción 2014
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-65382014000200005
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:scielo:S0717-65382014000200005
record_format	dspace
spelling	oai:scielo:S0717-653820140002000052015-01-23Life cycle of a freshwater Gondwanic remnant polychaete Stratiodrilus aeglaphilus (Annelida: Eunicida: Histriobdellidae), commensal with Aegla laevis (Crustacea: Anomura)VILA,IRMAVÉLIZ,DAVID Within the Annelida phylum, the Histriobdellidae Family groups freshwater polychaetes sharing an ancient Gondwanic relationship; very little is known about their life histories. Here we describe the life cycle of Stratiodrilus aeglaphilus, an epibiont of the crab Aegla laevis, which inhabits rivers of central Chile. All its life stages were found associated with A. laevis. The presence of a chitinous penis and its larger size permit distinguishing males from females. The observation of larvae/embryos at different development stages allowed us determining the absence of a free-swimming larvae stage in this species; recently hatched juveniles have movements similar to those of adults. S. aeglaphilus shows direct development; different embryo development stages could be observed in the coxal base of the Aegla pereiopods, where all females migrate for oviposition. The life cycle described here is similar to the cycle of other marine organisms such as molluscs and crustaceans. These organisms have adapted to limnic systems by changing their life cycles and showing an absence of planktonic larvae that ensures higher survival in these environments.info:eu-repo/semantics/openAccessFacultad de Ciencias Naturales y Oceanográficas, Universidad de ConcepciónGayana (Concepción) v.78 n.2 20142014-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-65382014000200005en10.4067/S0717-65382014000200005
institution	Scielo Chile
collection	Scielo Chile
language	English
description	Within the Annelida phylum, the Histriobdellidae Family groups freshwater polychaetes sharing an ancient Gondwanic relationship; very little is known about their life histories. Here we describe the life cycle of Stratiodrilus aeglaphilus, an epibiont of the crab Aegla laevis, which inhabits rivers of central Chile. All its life stages were found associated with A. laevis. The presence of a chitinous penis and its larger size permit distinguishing males from females. The observation of larvae/embryos at different development stages allowed us determining the absence of a free-swimming larvae stage in this species; recently hatched juveniles have movements similar to those of adults. S. aeglaphilus shows direct development; different embryo development stages could be observed in the coxal base of the Aegla pereiopods, where all females migrate for oviposition. The life cycle described here is similar to the cycle of other marine organisms such as molluscs and crustaceans. These organisms have adapted to limnic systems by changing their life cycles and showing an absence of planktonic larvae that ensures higher survival in these environments.
author	VILA,IRMA VÉLIZ,DAVID
spellingShingle	VILA,IRMA VÉLIZ,DAVID Life cycle of a freshwater Gondwanic remnant polychaete Stratiodrilus aeglaphilus (Annelida: Eunicida: Histriobdellidae), commensal with Aegla laevis (Crustacea: Anomura)
author_facet	VILA,IRMA VÉLIZ,DAVID
author_sort	VILA,IRMA
title	Life cycle of a freshwater Gondwanic remnant polychaete Stratiodrilus aeglaphilus (Annelida: Eunicida: Histriobdellidae), commensal with Aegla laevis (Crustacea: Anomura)
title_short	Life cycle of a freshwater Gondwanic remnant polychaete Stratiodrilus aeglaphilus (Annelida: Eunicida: Histriobdellidae), commensal with Aegla laevis (Crustacea: Anomura)
title_full	Life cycle of a freshwater Gondwanic remnant polychaete Stratiodrilus aeglaphilus (Annelida: Eunicida: Histriobdellidae), commensal with Aegla laevis (Crustacea: Anomura)
title_fullStr	Life cycle of a freshwater Gondwanic remnant polychaete Stratiodrilus aeglaphilus (Annelida: Eunicida: Histriobdellidae), commensal with Aegla laevis (Crustacea: Anomura)
title_full_unstemmed	Life cycle of a freshwater Gondwanic remnant polychaete Stratiodrilus aeglaphilus (Annelida: Eunicida: Histriobdellidae), commensal with Aegla laevis (Crustacea: Anomura)
title_sort	life cycle of a freshwater gondwanic remnant polychaete stratiodrilus aeglaphilus (annelida: eunicida: histriobdellidae), commensal with aegla laevis (crustacea: anomura)
publisher	Facultad de Ciencias Naturales y Oceanográficas, Universidad de Concepción
publishDate	2014
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-65382014000200005
work_keys_str_mv	AT vilairma lifecycleofafreshwatergondwanicremnantpolychaetestratiodrilusaeglaphilusannelidaeunicidahistriobdellidaecommensalwithaeglalaeviscrustaceaanomura AT velizdavid lifecycleofafreshwatergondwanicremnantpolychaetestratiodrilusaeglaphilusannelidaeunicidahistriobdellidaecommensalwithaeglalaeviscrustaceaanomura
_version_	1718442165434056704

Life cycle of a freshwater Gondwanic remnant polychaete Stratiodrilus aeglaphilus (Annelida: Eunicida: Histriobdellidae), commensal with Aegla laevis (Crustacea: Anomura)

Ejemplares similares