Importance of body size and hunting strategy during interactions between the Mexican red-rump tarantula (Brachypelma vagans) and the wolf spider Lycosa subfusca
Behavioural adaptation helps animals to maximize their ability to obtain food and to avoid being eaten, increasing fitness. To achieve this, they must assess predation risk and evaluate foraging needs simultaneously. In two sympatric spider species, the wandering wolf spider Lycosa subfusca F.O.P. Cambridge, 1902 and the sit-and-wait Mexican red-rump tarantula (Brachypelma vagans Ausserer, 1875), we studied the relationship between predatory behaviour and antipredatory behaviour at different life stages. In the laboratory, encounters were organized between one wolf spider (small, medium-sized, or large) and one tarantula (spiderling, small, medium-sized, or large). Attack latencies and behaviours were recorded. The results showed that wolf spiders attacked and successfully captured younger tarantulas, while they avoided or retreated from older ones. Tarantulas preferentially attacked and captured older wolf spiders. On other hand, younger wolf spiders were more cautious than older ones, which waited until for the tarantulas to attack before retreating. Younger tarantulas were also more cautious than adults, which never retreated from attack and increased their success in attacks with age. Finally, we discuss the relationship between the predatory strategies of both spiders with their perception abilities and life history.
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| Subjects: | Brachypelma vagans, Lycosa subfusca, Theraphosidae, Depredación, Artfrosur, |
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Brachypelma vagans Lycosa subfusca Theraphosidae Depredación Artfrosur Brachypelma vagans Lycosa subfusca Theraphosidae Depredación Artfrosur |
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Brachypelma vagans Lycosa subfusca Theraphosidae Depredación Artfrosur Brachypelma vagans Lycosa subfusca Theraphosidae Depredación Artfrosur Dor Roques, Ariane Liliane Jeanne Doctora autor/a 12293 Hénaut, Yann Doctor autor/a 2087 Importance of body size and hunting strategy during interactions between the Mexican red-rump tarantula (Brachypelma vagans) and the wolf spider Lycosa subfusca |
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Behavioural adaptation helps animals to maximize their ability to obtain food and to avoid being eaten, increasing fitness. To achieve this, they must assess predation risk and evaluate foraging needs simultaneously. In two sympatric spider species, the wandering wolf spider Lycosa subfusca F.O.P. Cambridge, 1902 and the sit-and-wait Mexican red-rump tarantula (Brachypelma vagans Ausserer, 1875), we studied the relationship between predatory behaviour and antipredatory behaviour at different life stages. In the laboratory, encounters were organized between one wolf spider (small, medium-sized, or large) and one tarantula (spiderling, small, medium-sized, or large). Attack latencies and behaviours were recorded. The results showed that wolf spiders attacked and successfully captured younger tarantulas, while they avoided or retreated from older ones. Tarantulas preferentially attacked and captured older wolf spiders. On other hand, younger wolf spiders were more cautious than older ones, which waited until for the tarantulas to attack before retreating. Younger tarantulas were also more cautious than adults, which never retreated from attack and increased their success in attacks with age. Finally, we discuss the relationship between the predatory strategies of both spiders with their perception abilities and life history. |
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Brachypelma vagans Lycosa subfusca Theraphosidae Depredación Artfrosur |
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Dor Roques, Ariane Liliane Jeanne Doctora autor/a 12293 Hénaut, Yann Doctor autor/a 2087 |
| author_facet |
Dor Roques, Ariane Liliane Jeanne Doctora autor/a 12293 Hénaut, Yann Doctor autor/a 2087 |
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Dor Roques, Ariane Liliane Jeanne Doctora autor/a 12293 |
| title |
Importance of body size and hunting strategy during interactions between the Mexican red-rump tarantula (Brachypelma vagans) and the wolf spider Lycosa subfusca |
| title_short |
Importance of body size and hunting strategy during interactions between the Mexican red-rump tarantula (Brachypelma vagans) and the wolf spider Lycosa subfusca |
| title_full |
Importance of body size and hunting strategy during interactions between the Mexican red-rump tarantula (Brachypelma vagans) and the wolf spider Lycosa subfusca |
| title_fullStr |
Importance of body size and hunting strategy during interactions between the Mexican red-rump tarantula (Brachypelma vagans) and the wolf spider Lycosa subfusca |
| title_full_unstemmed |
Importance of body size and hunting strategy during interactions between the Mexican red-rump tarantula (Brachypelma vagans) and the wolf spider Lycosa subfusca |
| title_sort |
importance of body size and hunting strategy during interactions between the mexican red-rump tarantula (brachypelma vagans) and the wolf spider lycosa subfusca |
| work_keys_str_mv |
AT dorroquesarianelilianejeannedoctoraautora12293 importanceofbodysizeandhuntingstrategyduringinteractionsbetweenthemexicanredrumptarantulabrachypelmavagansandthewolfspiderlycosasubfusca AT henautyanndoctorautora2087 importanceofbodysizeandhuntingstrategyduringinteractionsbetweenthemexicanredrumptarantulabrachypelmavagansandthewolfspiderlycosasubfusca |
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KOHA-OAI-ECOSUR:362532024-05-22T11:27:27ZImportance of body size and hunting strategy during interactions between the Mexican red-rump tarantula (Brachypelma vagans) and the wolf spider Lycosa subfusca Dor Roques, Ariane Liliane Jeanne Doctora autor/a 12293 Hénaut, Yann Doctor autor/a 2087 textengBehavioural adaptation helps animals to maximize their ability to obtain food and to avoid being eaten, increasing fitness. To achieve this, they must assess predation risk and evaluate foraging needs simultaneously. In two sympatric spider species, the wandering wolf spider Lycosa subfusca F.O.P. Cambridge, 1902 and the sit-and-wait Mexican red-rump tarantula (Brachypelma vagans Ausserer, 1875), we studied the relationship between predatory behaviour and antipredatory behaviour at different life stages. In the laboratory, encounters were organized between one wolf spider (small, medium-sized, or large) and one tarantula (spiderling, small, medium-sized, or large). Attack latencies and behaviours were recorded. The results showed that wolf spiders attacked and successfully captured younger tarantulas, while they avoided or retreated from older ones. Tarantulas preferentially attacked and captured older wolf spiders. On other hand, younger wolf spiders were more cautious than older ones, which waited until for the tarantulas to attack before retreating. Younger tarantulas were also more cautious than adults, which never retreated from attack and increased their success in attacks with age. Finally, we discuss the relationship between the predatory strategies of both spiders with their perception abilities and life history.Les adaptations comportementales des animaux optimisent l'obtention de nourriture ou leur évitent d'être mangés, en améliorant leur fitness. Pour cela, ils doivent évaluer simultanément le risque d'être mangés et la nécessité de se nourrir. Nous avons étudié les comportements prédateur et anti-prédateur de deux araignées sympatriques, l'araignée-loup errante Lycosa subfusca F.O.P. Cambridge, 1902 et la mygale Brachypelma vagans Ausserer, 1875 pendant différentes période de leur vie. En laboratoire, on a réalisé des rencontres entre une araignée-loup (petite, moyenne ou grande) et une mygale (très petite, petite, moyenne ou grande). On observe que les araignées-loups attaquent et capturent avec succès les plus jeunes mygales, alors qu'elles n'attaquent pas les adultes. Les mygales attaquent et capturent préférentiellement les araignées-loups adultes. D'autre part, les jeunes araignées-loups sont plus prudentes, elles évitent les mygales alors que leurs adultes attendent une attaque pour se retirer. De même, les jeunes mygales se montrent plus prudentes que leurs adultes, qui ne se retirent jamais en cas d'attaque et dont le « succès d'attaque » augmente avec l'âge. Finalement nous discutons des relations entre les stratégies prédatrices de chaque espèce d'araignée en lien avec leur habileté perceptive et leur histoire de vie.Behavioural adaptation helps animals to maximize their ability to obtain food and to avoid being eaten, increasing fitness. To achieve this, they must assess predation risk and evaluate foraging needs simultaneously. In two sympatric spider species, the wandering wolf spider Lycosa subfusca F.O.P. Cambridge, 1902 and the sit-and-wait Mexican red-rump tarantula (Brachypelma vagans Ausserer, 1875), we studied the relationship between predatory behaviour and antipredatory behaviour at different life stages. In the laboratory, encounters were organized between one wolf spider (small, medium-sized, or large) and one tarantula (spiderling, small, medium-sized, or large). Attack latencies and behaviours were recorded. The results showed that wolf spiders attacked and successfully captured younger tarantulas, while they avoided or retreated from older ones. Tarantulas preferentially attacked and captured older wolf spiders. On other hand, younger wolf spiders were more cautious than older ones, which waited until for the tarantulas to attack before retreating. Younger tarantulas were also more cautious than adults, which never retreated from attack and increased their success in attacks with age. Finally, we discuss the relationship between the predatory strategies of both spiders with their perception abilities and life history.Les adaptations comportementales des animaux optimisent l'obtention de nourriture ou leur évitent d'être mangés, en améliorant leur fitness. Pour cela, ils doivent évaluer simultanément le risque d'être mangés et la nécessité de se nourrir. Nous avons étudié les comportements prédateur et anti-prédateur de deux araignées sympatriques, l'araignée-loup errante Lycosa subfusca F.O.P. Cambridge, 1902 et la mygale Brachypelma vagans Ausserer, 1875 pendant différentes période de leur vie. En laboratoire, on a réalisé des rencontres entre une araignée-loup (petite, moyenne ou grande) et une mygale (très petite, petite, moyenne ou grande). On observe que les araignées-loups attaquent et capturent avec succès les plus jeunes mygales, alors qu'elles n'attaquent pas les adultes. Les mygales attaquent et capturent préférentiellement les araignées-loups adultes. D'autre part, les jeunes araignées-loups sont plus prudentes, elles évitent les mygales alors que leurs adultes attendent une attaque pour se retirer. De même, les jeunes mygales se montrent plus prudentes que leurs adultes, qui ne se retirent jamais en cas d'attaque et dont le « succès d'attaque » augmente avec l'âge. Finalement nous discutons des relations entre les stratégies prédatrices de chaque espèce d'araignée en lien avec leur habileté perceptive et leur histoire de vie.Adobe Acrobat profesional 6.0 o superiorBrachypelma vagansLycosa subfuscaTheraphosidaeDepredaciónArtfrosurDisponible en líneaCanadian Journal of ZoologyDisponible para usuarios de ECOSUR con su clave de acceso |