First record of the invasive medusa Blackfordia virginica (Hydrozoa: Leptomedusae) in the Río de la Plata estuary, Argentina-Uruguay

Blackfordia virginica is a well-known invasive medusa inhabiting estuarine areas. It was recently detected in northern Argentina, constituting the first record of invasive hydromedusa for the Argentine Sea. In this work more than 1,500 plankton samples in the southwestern Atlantic Ocean (34-55º S) f...

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Autores principales:	GENZANO,GABRIEL, MIANZAN,HERMES, ACHA,EDUARDO M, GAITÁN,ESTEBAN
Lenguaje:	English
Publicado:	Sociedad de Biología de Chile 2006
Materias:	Hydromedusae invasive species estuary south western Atlantic Ocean
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2006000200011
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spelling	oai:scielo:S0716-078X20060002000112006-07-24First record of the invasive medusa Blackfordia virginica (Hydrozoa: Leptomedusae) in the Río de la Plata estuary, Argentina-UruguayGENZANO,GABRIELMIANZAN,HERMESACHA,EDUARDO MGAITÁN,ESTEBAN Hydromedusae invasive species estuary south western Atlantic Ocean Blackfordia virginica is a well-known invasive medusa inhabiting estuarine areas. It was recently detected in northern Argentina, constituting the first record of invasive hydromedusa for the Argentine Sea. In this work more than 1,500 plankton samples in the southwestern Atlantic Ocean (34-55º S) from 1983 to 2000 were analyzed. More than 5,000 specimens per sample of B. virginica were found in Río de la Plata estuary for the first time in February 2000. This river is one of the large waterways of South America with an intense nautical traffic and several exotic species has been recorded here, mainly due to trans-oceanic shipping traffic. It is important to point out that we found medusae of both sexes (therefore this species could be introduced in either the medusa or the polyp stages or both), different size classes (including very small juveniles) and maturation stages, and in such high numbers that would suggest local reproduction. For this reason the recent finding of this hydromedusa could represent the starting point of an successful introductioninfo:eu-repo/semantics/openAccessSociedad de Biología de ChileRevista chilena de historia natural v.79 n.2 20062006-06-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2006000200011en10.4067/S0716-078X2006000200011
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Hydromedusae invasive species estuary south western Atlantic Ocean
spellingShingle	Hydromedusae invasive species estuary south western Atlantic Ocean GENZANO,GABRIEL MIANZAN,HERMES ACHA,EDUARDO M GAITÁN,ESTEBAN First record of the invasive medusa Blackfordia virginica (Hydrozoa: Leptomedusae) in the Río de la Plata estuary, Argentina-Uruguay
description	Blackfordia virginica is a well-known invasive medusa inhabiting estuarine areas. It was recently detected in northern Argentina, constituting the first record of invasive hydromedusa for the Argentine Sea. In this work more than 1,500 plankton samples in the southwestern Atlantic Ocean (34-55º S) from 1983 to 2000 were analyzed. More than 5,000 specimens per sample of B. virginica were found in Río de la Plata estuary for the first time in February 2000. This river is one of the large waterways of South America with an intense nautical traffic and several exotic species has been recorded here, mainly due to trans-oceanic shipping traffic. It is important to point out that we found medusae of both sexes (therefore this species could be introduced in either the medusa or the polyp stages or both), different size classes (including very small juveniles) and maturation stages, and in such high numbers that would suggest local reproduction. For this reason the recent finding of this hydromedusa could represent the starting point of an successful introduction
author	GENZANO,GABRIEL MIANZAN,HERMES ACHA,EDUARDO M GAITÁN,ESTEBAN
author_facet	GENZANO,GABRIEL MIANZAN,HERMES ACHA,EDUARDO M GAITÁN,ESTEBAN
author_sort	GENZANO,GABRIEL
title	First record of the invasive medusa Blackfordia virginica (Hydrozoa: Leptomedusae) in the Río de la Plata estuary, Argentina-Uruguay
title_short	First record of the invasive medusa Blackfordia virginica (Hydrozoa: Leptomedusae) in the Río de la Plata estuary, Argentina-Uruguay
title_full	First record of the invasive medusa Blackfordia virginica (Hydrozoa: Leptomedusae) in the Río de la Plata estuary, Argentina-Uruguay
title_fullStr	First record of the invasive medusa Blackfordia virginica (Hydrozoa: Leptomedusae) in the Río de la Plata estuary, Argentina-Uruguay
title_full_unstemmed	First record of the invasive medusa Blackfordia virginica (Hydrozoa: Leptomedusae) in the Río de la Plata estuary, Argentina-Uruguay
title_sort	first record of the invasive medusa blackfordia virginica (hydrozoa: leptomedusae) in the río de la plata estuary, argentina-uruguay
publisher	Sociedad de Biología de Chile
publishDate	2006
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2006000200011
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First record of the invasive medusa Blackfordia virginica (Hydrozoa: Leptomedusae) in the Río de la Plata estuary, Argentina-Uruguay

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