Effect of the toxic dinoflagellate Gymnodinium catenatum on the grazing, egg production, and hatching success of the copepod Acartia clausi

The influence of the toxic dinoflagellate Gymnodinium catenatum Graham on the reproductive response of the calanoid copepod Acartia clausi Giesbrecht was examined. Mature females of A. clausi were selected and fed a mixture of natural phytoplankton and G. catenatum in nominal ratios of 100:0%, 75:25...

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Autores principales:	Palomares-García, R, Bustillos-Guzmán, J, Band-Schnidt, CJ, López-Cortés, D, Luckas, B
Formato:	info:eu-repo/semantics/article
Lenguaje:	eng
Publicado:	Iniversidad Autónoma de Baja California 2006
Materias:	PSP toxins dinoflagellate copepod Concepción Bay toxinas PSP dinoflagelados copépodos Bahía Concepción
Acceso en línea:	https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/1041
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id	repositorioinstitucional-20.500.12930-7393
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spelling	repositorioinstitucional-20.500.12930-73932023-05-09T14:30:57Z Effect of the toxic dinoflagellate Gymnodinium catenatum on the grazing, egg production, and hatching success of the copepod Acartia clausi Efecto del dinoflagelado tóxico Gymnodinium catenatum sobre el consumo, la producción de huevos y la tasa de eclosión del copépodo Acartia clausi Palomares-García, R Bustillos-Guzmán, J Band-Schnidt, CJ López-Cortés, D Luckas, B PSP toxins dinoflagellate copepod Concepción Bay toxinas PSP dinoflagelados copépodos Bahía Concepción The influence of the toxic dinoflagellate Gymnodinium catenatum Graham on the reproductive response of the calanoid copepod Acartia clausi Giesbrecht was examined. Mature females of A. clausi were selected and fed a mixture of natural phytoplankton and G. catenatum in nominal ratios of 100:0%, 75:25%, 50:50%, 25:75%, and 0:100%, respectively. The concentration and type of toxins of the G. catenatum strain used were evaluated. The ingestion of G. catenatum did not produce either adverse effects nor incapacitation of A. clausi. Ingestion and egg production rates were not diminished by G. catenatum and were highest at the 0:100% ratio. Egg hatching rates were similar (>90%) for all diets. Acartia clausi is an ubiquitous copepod in Concepción Bay (Baja California Sur, Mexico), and our results indicate that it was able to feed on this toxic dinoflagellate at rates similar or higher than those at which it feeds on natural phytoplankton; therefore, A. clausi could play a key role in controlling the occurrence of red tides in Concepción Bay. En este estudio se analiza la influencia de Gymnodinium catenatum Graham sobre la reproducción del copépodo Acartia clausi Giesbrecht. Se seleccionaron hembras maduras de A. clausi y se alimentaron con una mezcla de fitoplancton natural y G. catenatum en proporciones de 100:0%, 75:25%, 50:50%, 25:75% y 0:100%, respectivamente. Se evaluó el tipo y concentración de toxinas en la cepa de G. catenatum utilizada. No se detectaron efectos adversos ni parálisis de los copépodos alimentados con el dinoflagelado tóxico. La ingestión y la tasa de producción de huevos fueron mayores en el cultivo puro alimentado exclusivamente con el dinoflagelado G. catenatum. No se detectó una diferencia significativa en el porcentaje de eclosión y éste siempre se mantuvo por arriba del 90%. Acartia clausi es la especie más ampliamente distribuida en Bahía Concepción y nuestros resultados indican que es capaz de alimentarse con este tipo de dinoflagelados tóxicos, a tasas similares o aún mayores a las que se alimenta del fitoplancton natural. Por lo anterior, A. clausi podría jugar un papel preponderante en el control de la aparición de las mareas rojas en Bahía Concepción. 2006-05-24 2021-06-03T03:55:09Z 2021-06-03T03:55:09Z info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article Artículo Arbitrado https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/1041 10.7773/cm.v32i12.1041 https://hdl.handle.net/20.500.12930/7393 eng https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/1041/938 application/pdf Iniversidad Autónoma de Baja California Ciencias Marinas; Vol. 32 No. 1B (2006); 97-109 Ciencias Marinas; Vol. 32 Núm. 1B (2006); 97-109 2395-9053 0185-3880
institution	Repositorio Institucional
collection	DSpace
language	eng
topic	PSP toxins dinoflagellate copepod Concepción Bay toxinas PSP dinoflagelados copépodos Bahía Concepción
spellingShingle	PSP toxins dinoflagellate copepod Concepción Bay toxinas PSP dinoflagelados copépodos Bahía Concepción Palomares-García, R Bustillos-Guzmán, J Band-Schnidt, CJ López-Cortés, D Luckas, B Effect of the toxic dinoflagellate Gymnodinium catenatum on the grazing, egg production, and hatching success of the copepod Acartia clausi
description	The influence of the toxic dinoflagellate Gymnodinium catenatum Graham on the reproductive response of the calanoid copepod Acartia clausi Giesbrecht was examined. Mature females of A. clausi were selected and fed a mixture of natural phytoplankton and G. catenatum in nominal ratios of 100:0%, 75:25%, 50:50%, 25:75%, and 0:100%, respectively. The concentration and type of toxins of the G. catenatum strain used were evaluated. The ingestion of G. catenatum did not produce either adverse effects nor incapacitation of A. clausi. Ingestion and egg production rates were not diminished by G. catenatum and were highest at the 0:100% ratio. Egg hatching rates were similar (>90%) for all diets. Acartia clausi is an ubiquitous copepod in Concepción Bay (Baja California Sur, Mexico), and our results indicate that it was able to feed on this toxic dinoflagellate at rates similar or higher than those at which it feeds on natural phytoplankton; therefore, A. clausi could play a key role in controlling the occurrence of red tides in Concepción Bay.
format	info:eu-repo/semantics/article
author	Palomares-García, R Bustillos-Guzmán, J Band-Schnidt, CJ López-Cortés, D Luckas, B
author_facet	Palomares-García, R Bustillos-Guzmán, J Band-Schnidt, CJ López-Cortés, D Luckas, B
author_sort	Palomares-García, R
title	Effect of the toxic dinoflagellate Gymnodinium catenatum on the grazing, egg production, and hatching success of the copepod Acartia clausi
title_short	Effect of the toxic dinoflagellate Gymnodinium catenatum on the grazing, egg production, and hatching success of the copepod Acartia clausi
title_full	Effect of the toxic dinoflagellate Gymnodinium catenatum on the grazing, egg production, and hatching success of the copepod Acartia clausi
title_fullStr	Effect of the toxic dinoflagellate Gymnodinium catenatum on the grazing, egg production, and hatching success of the copepod Acartia clausi
title_full_unstemmed	Effect of the toxic dinoflagellate Gymnodinium catenatum on the grazing, egg production, and hatching success of the copepod Acartia clausi
title_sort	effect of the toxic dinoflagellate gymnodinium catenatum on the grazing, egg production, and hatching success of the copepod acartia clausi
publisher	Iniversidad Autónoma de Baja California
publishDate	2006
url	https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/1041
_version_	1792610474449174528

Effect of the toxic dinoflagellate Gymnodinium catenatum on the grazing, egg production, and hatching success of the copepod Acartia clausi

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