Evaluation of two treatments in polychaete worm intensity associated with Crassostrea gigas (Thunberg, 1873) oyster valves

Evaluation of two treatments in polychaete worm intensity associated with Crassostrea gigas (Thunberg, 1873) oyster valves

 This study evaluates the effect of weekly immersion baths in fresh water and a 0.2% solution of calcium hydroxide (lime) on the intensity of fouling polychaete worms in Crassostrea gigas oysters. Initially, 135 juvenile oysters (with an average length of 2.75 ± 0.25 cm and a mean wet weigh...

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Autores principales: Gallo-García, MC, Ulloa-Gómez, MG, Godínez-Siordia, DE
Formato: Online
Lenguaje:eng
Publicado: Iniversidad Autónoma de Baja California 2004
Acceso en línea:https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/283
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spelling oai:cienciasmarinas.com.mx:article-2832019-04-10T23:48:32Z Evaluation of two treatments in polychaete worm intensity associated with Crassostrea gigas (Thunberg, 1873) oyster valves Evaluación de dos tratamientos en la intensidad de gusanos poliquetos asociados a las valvas del ostión Crassostrea gigas (Thunberg, 1873) Gallo-García, MC Ulloa-Gómez, MG Godínez-Siordia, DE polychaete worms intensity epibiont control Crassostrea gigas gusanos poliquetos intensidad control de epibiontes Crassostrea gigas  This study evaluates the effect of weekly immersion baths in fresh water and a 0.2% solution of calcium hydroxide (lime) on the intensity of fouling polychaete worms in Crassostrea gigas oysters. Initially, 135 juvenile oysters (with an average length of 2.75 ± 0.25 cm and a mean wet weight of 4.33 ± 0.96 g) were randomly assigned to three groups with three replicates each. Two groups were treated for 10 minutes with lime and fresh water, respectively, and a third group remained as control. Fouling polychaete intensity and the bivalve length and weight were obtained every 15 days. Every week oyster survival was registered for each treatment and water parameters were measured at the culture site. Significant differences (P < 0.05) in worm intensity were found between the two bath treatments and the control. The lime treatment showed the lowest intensity (number of mud tubes/oyster) in all the sampling days, with no increase in intensity during the last experimental month. There were no significant differences (P > 0.05) in final survival, final length, final weight and final condition index of the oysters among treatments after 112 days of study. Se evaluó el efecto de baños de inmersión semanales en agua dulce y en una suspensión de hidróxido de calcio (cal hidratada) al 0.2%, sobre la intensidad de poliquetos tubícolas epibiontes del ostión Crassostrea gigas. Al inicio del estudio, 135 juveniles de ostión (2.75 ± 0.25 cm de longitud media y 4.33 ± 0.96 g de peso húmedo en promedio) fueron asignados aleatoriamente a tres grupos con tres repeticiones cada uno. Dos grupos recibieron tratamientos durante 10 minutos con cal y agua dulce, respectivamente, en tanto que un tercer grupo permaneció como testigo. Cada 15 días fue registrada la intensidad de los poliquetos en las valvas, así como la talla y el peso de los bivalvos. Semanalmente se obtuvo la supervivencia de los ostiones por tratamiento, y se midieron las condiciones físicas y químicas del agua en el lugar de cultivo. Se encontraron diferencias significativas (P < 0.05) entre la intensidad de poliquetos en los grupos tratados y el control. El tratamiento con cal registró los valores más bajos de tubos/ostión todos los días de muestreo y no presentó aumento en la intensidad durante los últimos 30 días del ensayo. No se encontraron diferencias significativas (P > 0.05) en la supervivencia, talla, peso e índice de condición finales de los ostiones, entre los grupos, después de 112 días de estudio. Iniversidad Autónoma de Baja California 2004-03-06 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article Artículo Arbitrado application/pdf https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/283 10.7773/cm.v30i3.283 Ciencias Marinas; Vol. 30 No. 3 (2004); 455-464 Ciencias Marinas; Vol. 30 Núm. 3 (2004); 455-464 2395-9053 0185-3880 eng https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/283/241
institution Ciencias Marinas
collection OJS
language eng
format Online
author Gallo-García, MC
Ulloa-Gómez, MG
Godínez-Siordia, DE
spellingShingle Gallo-García, MC
Ulloa-Gómez, MG
Godínez-Siordia, DE
Evaluation of two treatments in polychaete worm intensity associated with Crassostrea gigas (Thunberg, 1873) oyster valves
author_facet Gallo-García, MC
Ulloa-Gómez, MG
Godínez-Siordia, DE
author_sort Gallo-García, MC
title Evaluation of two treatments in polychaete worm intensity associated with Crassostrea gigas (Thunberg, 1873) oyster valves
title_short Evaluation of two treatments in polychaete worm intensity associated with Crassostrea gigas (Thunberg, 1873) oyster valves
title_full Evaluation of two treatments in polychaete worm intensity associated with Crassostrea gigas (Thunberg, 1873) oyster valves
title_fullStr Evaluation of two treatments in polychaete worm intensity associated with Crassostrea gigas (Thunberg, 1873) oyster valves
title_full_unstemmed Evaluation of two treatments in polychaete worm intensity associated with Crassostrea gigas (Thunberg, 1873) oyster valves
title_sort evaluation of two treatments in polychaete worm intensity associated with crassostrea gigas (thunberg, 1873) oyster valves
description  This study evaluates the effect of weekly immersion baths in fresh water and a 0.2% solution of calcium hydroxide (lime) on the intensity of fouling polychaete worms in Crassostrea gigas oysters. Initially, 135 juvenile oysters (with an average length of 2.75 ± 0.25 cm and a mean wet weight of 4.33 ± 0.96 g) were randomly assigned to three groups with three replicates each. Two groups were treated for 10 minutes with lime and fresh water, respectively, and a third group remained as control. Fouling polychaete intensity and the bivalve length and weight were obtained every 15 days. Every week oyster survival was registered for each treatment and water parameters were measured at the culture site. Significant differences (P < 0.05) in worm intensity were found between the two bath treatments and the control. The lime treatment showed the lowest intensity (number of mud tubes/oyster) in all the sampling days, with no increase in intensity during the last experimental month. There were no significant differences (P > 0.05) in final survival, final length, final weight and final condition index of the oysters among treatments after 112 days of study.
publisher Iniversidad Autónoma de Baja California
publishDate 2004
url https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/283
_version_ 1715723950771666944

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