Distance assessment of detours by jum ping spiders  

作　　者：Samuel AGUILAR-ARGUELLO Daniel GERHARD Ximena J.NELSON 

机构地区：[1]School of Biological Sciences,University of Canterbury,Private Bag 4800,Christchurch 8140,New Zealand [2]School of Mathem atics and Statistics,University of Canterbury,Private Bag 4800,Christchurch 8140,New Zealand

出　　处：《Current Zoology》2020年第3期263-273,共11页动物学报（英文版）

摘　　要：To take an indirect route(detour)in order to reach a specific target requires complex cognitive processes.Yet more demanding,from the cognitive point of view,is when the goal is only visible at the beginning of the detour.In spiders from the family Sa lticidae,vision is a key sensory modal-ity mediating navigation and prey search.Their acute vision allows them to perform complicated detours,possibly as a consequence of the multitude of potential routes in their typically complex 3-dimensional habitats.We used a 4-route choice test,in which routes differed in being either short or long and in the presence or absence of a lure of a prey item,to investigate route assessment in 2 salticid species,Trite planiceps and Marpissa marina.Although both species showed evidence of motivation to follow lured-routes,judging by the number of times they re-oriented toward them while detouring,we found that Trite chose short routes in preference to long routes,but did not prefer the lured-routes.In contrast,Marpissa exhibited random route choice,although it ori-ented toward lured-routes more often than control routes(lure absent).Our results suggest that decision-making processes about which route to take occurs before embarking on a route,but this is cognitively challenging.Spiders exhibited cognitive limitations in which the lack of visibility of the goal affected success.However,the severity of cognitive limitations depended on species.We suggest that variability in spatial ability across the Salticidae may be related to the habitat complexity inhabited by each species.

关 键 词：COGNITION cognitive limitations DECISION-MAKING detour behavior SALTICIDAE spatial task 

分 类 号：Q95[生物学—动物学]