Preys and capture sites used by crab spiders (Araneae: Thomisidae and Philodromidae) in a grassland of central Argentina
Ecología Austral, 25:19-25 (2015)Distribution of predators and flowers influence on the selection of forage site of flower visitors. Predators, as crab spiders, can determine the structure of communities of flower visitors and influence on plant pollination. The objectives of this study were: (a) to evaluate the use of flowers or inflorescences (hereinafter units floral attraction, UFA) by crab spiders as capture sites; (B) to identify traits that may affect the use of capture sites; and (c) to assess the relationship between the size of the spiders and their prey. We surveyed two plots of one hectare in center of Pampas region (Buenos Aires, Argentina) recording all entomophilous flowering plants and their floral visitors. In addition, we captured all crab spiders with and without preys, recording the UFA they used as capture site. We estimate and evaluate the relationship between the size of the spiders and their prey. Crab spiders used as capture sites the most abundant UFA and with higher richness of floral visitors, regardless of whether they were flowers or inflorescences. On the other hand, the size of the spider could be determining the size of the preys. We found a positive association between the two variables, although this result was variable depending on the taxonomic orders of preys. Those results suggest that crab spiders can have a relevant role as modelers of the structure of plant - pollinator interaction.
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Asociación Argentina de Ecología
2015
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rev-ecoaus-article-492023-11-02T19:33:40Z Preys and capture sites used by crab spiders (Araneae: Thomisidae and Philodromidae) in a grassland of central Argentina Presas y sitios de capturas utilizados por arañas cangrejo (Araneae: Thomisidae y Philodromidae) en un pastizal del centro de Argentina Marrero, Hugo Javier Pompozzi, Gabriel Torretta, Juan Pablo Ecología Austral, 25:19-25 (2015)Distribution of predators and flowers influence on the selection of forage site of flower visitors. Predators, as crab spiders, can determine the structure of communities of flower visitors and influence on plant pollination. The objectives of this study were: (a) to evaluate the use of flowers or inflorescences (hereinafter units floral attraction, UFA) by crab spiders as capture sites; (B) to identify traits that may affect the use of capture sites; and (c) to assess the relationship between the size of the spiders and their prey. We surveyed two plots of one hectare in center of Pampas region (Buenos Aires, Argentina) recording all entomophilous flowering plants and their floral visitors. In addition, we captured all crab spiders with and without preys, recording the UFA they used as capture site. We estimate and evaluate the relationship between the size of the spiders and their prey. Crab spiders used as capture sites the most abundant UFA and with higher richness of floral visitors, regardless of whether they were flowers or inflorescences. On the other hand, the size of the spider could be determining the size of the preys. We found a positive association between the two variables, although this result was variable depending on the taxonomic orders of preys. Those results suggest that crab spiders can have a relevant role as modelers of the structure of plant - pollinator interaction. Ecología Austral, 25:19-25 (2015)La distribución de los depredadores y flores son factores importantes que influyen sobre la elección del sitio de forrajeo por los visitantes florales. Los depredadores como las arañas cangrejo pueden determinar la estructura de las comunidades de visitantes florales y afectar la polinización de las plantas. Los objetivos de este trabajo fueron (a) evaluar el uso por las arañas cangrejo de flores o inflorescencias (en adelante unidades de atracción floral, UAF) como sitios de captura; (b) determinar características que pueden afectar el uso de los sitios de captura; y (c) evaluar la relación entre el tamaño de las arañas y el de sus presas. Recorrimos dos parcelas de una hectárea en el centro de la región Pampeana (Buenos Aires, Argentina) registrando todas las plantas entomófilas en flor y sus visitantes florales. Además, capturamos todas las arañas cangrejo con y sin presa registrando las UAF que utilizaron como sitio de captura. Medimos y evaluamos la relación entre el tamaño de las arañas y de sus presas. Las arañas cangrejo utilizaron como sitios de captura las UAF más abundantes y con mayor riqueza de visitantes florales, independientemente de si eran flores o inflorescencias. Por otro lado, el tamaño de la araña podría determinar el tamaño de su presa. Encontramos una asociación positiva entre ambas variables, aunque este resultado fue variable dependiendo de los órdenes taxonómicos de las presas. Estos resultados sugieren que las arañas cangrejo pueden tener un papel relevante modelando la estructura de las interacciones planta-polinizadores. Asociación Argentina de Ecología 2015-04-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Articles Artículos application/pdf https://ojs.ecologiaaustral.com.ar/index.php/Ecologia_Austral/article/view/49 10.25260/EA.15.25.1.0.49 Ecología Austral; Vol. 25 No. 1 (2015): April 2015, Pages 1-86; 19-25 Ecología Austral; Vol. 25 Núm. 1 (2015): April 2015, Pages 1-86; 19-25 1667-782X 0327-5477 spa https://ojs.ecologiaaustral.com.ar/index.php/Ecologia_Austral/article/view/49/50 Derechos de autor 2015 Hugo Javier Marrero, Gabriel Pompozzi, Juan Pablo Torretta https://creativecommons.org/licenses/by/3.0/ |
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Marrero, Hugo Javier Pompozzi, Gabriel Torretta, Juan Pablo |
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Marrero, Hugo Javier Pompozzi, Gabriel Torretta, Juan Pablo Preys and capture sites used by crab spiders (Araneae: Thomisidae and Philodromidae) in a grassland of central Argentina |
author_facet |
Marrero, Hugo Javier Pompozzi, Gabriel Torretta, Juan Pablo |
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Marrero, Hugo Javier |
title |
Preys and capture sites used by crab spiders (Araneae: Thomisidae and Philodromidae) in a grassland of central Argentina |
title_short |
Preys and capture sites used by crab spiders (Araneae: Thomisidae and Philodromidae) in a grassland of central Argentina |
title_full |
Preys and capture sites used by crab spiders (Araneae: Thomisidae and Philodromidae) in a grassland of central Argentina |
title_fullStr |
Preys and capture sites used by crab spiders (Araneae: Thomisidae and Philodromidae) in a grassland of central Argentina |
title_full_unstemmed |
Preys and capture sites used by crab spiders (Araneae: Thomisidae and Philodromidae) in a grassland of central Argentina |
title_sort |
preys and capture sites used by crab spiders (araneae: thomisidae and philodromidae) in a grassland of central argentina |
description |
Ecología Austral, 25:19-25 (2015)Distribution of predators and flowers influence on the selection of forage site of flower visitors. Predators, as crab spiders, can determine the structure of communities of flower visitors and influence on plant pollination. The objectives of this study were: (a) to evaluate the use of flowers or inflorescences (hereinafter units floral attraction, UFA) by crab spiders as capture sites; (B) to identify traits that may affect the use of capture sites; and (c) to assess the relationship between the size of the spiders and their prey. We surveyed two plots of one hectare in center of Pampas region (Buenos Aires, Argentina) recording all entomophilous flowering plants and their floral visitors. In addition, we captured all crab spiders with and without preys, recording the UFA they used as capture site. We estimate and evaluate the relationship between the size of the spiders and their prey. Crab spiders used as capture sites the most abundant UFA and with higher richness of floral visitors, regardless of whether they were flowers or inflorescences. On the other hand, the size of the spider could be determining the size of the preys. We found a positive association between the two variables, although this result was variable depending on the taxonomic orders of preys. Those results suggest that crab spiders can have a relevant role as modelers of the structure of plant - pollinator interaction. |
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Asociación Argentina de Ecología |
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2015 |
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https://ojs.ecologiaaustral.com.ar/index.php/Ecologia_Austral/article/view/49 |
work_keys_str_mv |
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