Efficiency of epibenthic Renfro beam nets for sampling penaeid shrimp
The efficiency of a Renfro beam trawl net was tested in vegetated and nonvegetated habitats of Términos Lagoon, Mexico. The white shrimp, Penaeus setiferus (87%), predominated over the brown shrimp. Penaeus uztecus (13%), in the naked substrate (Palizada Vieja), whereas the pink shrimp, Penaeus duor...
| Autores: | , , , |
|---|---|
| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 1994 |
| País: | México |
| Institución: | UNIVERSIDAD AUTÓNOMA DE BAJA CALIFORNIA |
| Repositorio: | Ciencias Marinas |
| Idioma: | inglés |
| OAI Identifier: | oai:cienciasmarinas.com.mx:article/970 |
| Acceso en línea: | https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/970 |
| Access Level: | acceso abierto |
| Palabra clave: | sampling effciency epibenthic postlarvae penaeids beam net eficiencia de muestreo postlarvas epibénticas peneidos red de barra |
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Efficiency of epibenthic Renfro beam nets for sampling penaeid shrimpEficiencia de redes epibénticas de barra tipo Renfro para muestreo de camarones peneidosGracia, AHernández-Ferreira, GGarcía-del-Real, RGenis-Vargas, JAsampling effciencyepibenthic postlarvaepenaeidsbeam neteficiencia de muestreopostlarvas epibénticaspeneidosred de barraThe efficiency of a Renfro beam trawl net was tested in vegetated and nonvegetated habitats of Términos Lagoon, Mexico. The white shrimp, Penaeus setiferus (87%), predominated over the brown shrimp. Penaeus uztecus (13%), in the naked substrate (Palizada Vieja), whereas the pink shrimp, Penaeus duorarum (98%), was the most abundant penaeid shrimp in the habitat with vegetation (Pájaros Island). In the substrate covered by vegetation, only the brown shrimp (2%) was present in addition to pink shrimp. Estimated penaeid shrimp density through the first sample ranged from 1.2 and 1.3 org. rn–2 in Palizada Vieja to 1.8 org. rn–2 at Pájaros Island. The efficiency of the beam trawl net was estimated at 28% in naked substrate when trawlings were done countercurrent. Net efficiency decreased to 17% when trawlings were done along the water flow. Net efficiency on vegetated substrates was estimated at 15%. Size composition of the first tow was significantly different (Χ2, P = 0.05) from the total size distribution of penaeids present in the area enclosed in both substrates, although mean sizes were similar. However, the size distribution obtained with two replicates did not show significant differences in both substrates at the same probability level.Se estima la eficiencia de una red de una red de barra tipo Renfro para el muestreo de postlarvas y juveniles de camarones peneidos sobre sustratos desnudos y cubiertos de vegetación, en localidades de la laguna de Términos, México. La captura de organismos peneidos en la localidad de Palizada Vieja, con sustrato desnudo, estuvo constituida por 87% de 13% camarón blanco, Penaeus setiferus, y 13% de camarón café, Penaeus aztecus, mientras que en localidad de isla Pájaros, con fondo cubierto de vegetación (Thalassia testudinum), predominó el camarón rosado, Penaeus duorarum (98%), sobre el camarón café (2%). La densidad estimada en el primer lance sobre sustrato desnudo varió entre 1.2 y 1.3 org. m–2 y sobre sustrato cubierto de vegetación fue 1.8 org. m–2. La efectividad de la red estimada en el sustrato desnudo fue de 28% en lances efectuados en contra de la corriente y disminuyó a 17% en los lances a favor de la corriente. En sustratos cubiertos de vegetación la eficiencia de la red fue de 15%. La estructura de tallas obtenidas con el primer lance es diferente de la estructura de la población en el área cercada en ambos tipos de sustrato (Χ2, P = 0.05). Sin embargo, la información recabada con al menos una réplica no muestra diferencia significativa con la estructura de tallas total en un nivel de P = 0.05.Iniversidad Autónoma de Baja California1994-03-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionPeer-reviewed Article Artículo Arbitradoapplication/pdfhttps://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/97010.7773/cm.v20i3.970Ciencias Marinas; Vol. 20 No. 3 (1994); 351-369Ciencias Marinas; Vol. 20 Núm. 3 (1994); 351-3692395-90530185-3880reponame:Ciencias Marinasinstname:UNIVERSIDAD AUTÓNOMA DE BAJA CALIFORNIAinstacron:UABCenghttps://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/970/891info:eu-repo/semantics/openAccessoai:cienciasmarinas.com.mx:article/9702024-08-22T17:01:37Z |
| dc.title.none.fl_str_mv |
Efficiency of epibenthic Renfro beam nets for sampling penaeid shrimp Eficiencia de redes epibénticas de barra tipo Renfro para muestreo de camarones peneidos |
| title |
Efficiency of epibenthic Renfro beam nets for sampling penaeid shrimp |
| spellingShingle |
Efficiency of epibenthic Renfro beam nets for sampling penaeid shrimp Gracia, A sampling effciency epibenthic postlarvae penaeids beam net eficiencia de muestreo postlarvas epibénticas peneidos red de barra |
| title_short |
Efficiency of epibenthic Renfro beam nets for sampling penaeid shrimp |
| title_full |
Efficiency of epibenthic Renfro beam nets for sampling penaeid shrimp |
| title_fullStr |
Efficiency of epibenthic Renfro beam nets for sampling penaeid shrimp |
| title_full_unstemmed |
Efficiency of epibenthic Renfro beam nets for sampling penaeid shrimp |
| title_sort |
Efficiency of epibenthic Renfro beam nets for sampling penaeid shrimp |
| dc.creator.none.fl_str_mv |
Gracia, A Hernández-Ferreira, G García-del-Real, R Genis-Vargas, JA |
| author |
Gracia, A |
| author_facet |
Gracia, A Hernández-Ferreira, G García-del-Real, R Genis-Vargas, JA |
| author_role |
author |
| author2 |
Hernández-Ferreira, G García-del-Real, R Genis-Vargas, JA |
| author2_role |
author author author |
| dc.subject.none.fl_str_mv |
sampling effciency epibenthic postlarvae penaeids beam net eficiencia de muestreo postlarvas epibénticas peneidos red de barra |
| topic |
sampling effciency epibenthic postlarvae penaeids beam net eficiencia de muestreo postlarvas epibénticas peneidos red de barra |
| description |
The efficiency of a Renfro beam trawl net was tested in vegetated and nonvegetated habitats of Términos Lagoon, Mexico. The white shrimp, Penaeus setiferus (87%), predominated over the brown shrimp. Penaeus uztecus (13%), in the naked substrate (Palizada Vieja), whereas the pink shrimp, Penaeus duorarum (98%), was the most abundant penaeid shrimp in the habitat with vegetation (Pájaros Island). In the substrate covered by vegetation, only the brown shrimp (2%) was present in addition to pink shrimp. Estimated penaeid shrimp density through the first sample ranged from 1.2 and 1.3 org. rn–2 in Palizada Vieja to 1.8 org. rn–2 at Pájaros Island. The efficiency of the beam trawl net was estimated at 28% in naked substrate when trawlings were done countercurrent. Net efficiency decreased to 17% when trawlings were done along the water flow. Net efficiency on vegetated substrates was estimated at 15%. Size composition of the first tow was significantly different (Χ2, P = 0.05) from the total size distribution of penaeids present in the area enclosed in both substrates, although mean sizes were similar. However, the size distribution obtained with two replicates did not show significant differences in both substrates at the same probability level. |
| publishDate |
1994 |
| dc.date.none.fl_str_mv |
1994-03-06 |
| dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article Artículo Arbitrado |
| format |
article |
| status_str |
publishedVersion |
| dc.identifier.none.fl_str_mv |
https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/970 10.7773/cm.v20i3.970 |
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https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/970 |
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10.7773/cm.v20i3.970 |
| dc.language.none.fl_str_mv |
eng |
| language |
eng |
| dc.relation.none.fl_str_mv |
https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/970/891 |
| dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess |
| eu_rights_str_mv |
openAccess |
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application/pdf |
| dc.publisher.none.fl_str_mv |
Iniversidad Autónoma de Baja California |
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Iniversidad Autónoma de Baja California |
| dc.source.none.fl_str_mv |
Ciencias Marinas; Vol. 20 No. 3 (1994); 351-369 Ciencias Marinas; Vol. 20 Núm. 3 (1994); 351-369 2395-9053 0185-3880 reponame:Ciencias Marinas instname:UNIVERSIDAD AUTÓNOMA DE BAJA CALIFORNIA instacron:UABC |
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UNIVERSIDAD AUTÓNOMA DE BAJA CALIFORNIA |
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UABC |
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UABC |
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Ciencias Marinas |
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Ciencias Marinas |
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