TRIAL-AND-ERROR SOLVING OF A CONFINEMENT PROBLEM BY A JUMPING SPIDER, PORTIA FIMBRIATA
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Abstract
Portia is a genus of web-invading araneophagic jumping spiders known from earlier studies to derive aggressive-mimicry signals by using a generate-and-test algorithm (trial-and-error tactic). Here P. fimbriata's use of trial-and-error to solve a confinement problem (how to escape from an island surrounded by water) is investigated. Spiders choose between two potential escape tactics (leap or swim), one of which will fail (bring spider no closer to edge of tray) and the other of which will partially succeed (bring spider closer to edge of tray). The particular choice that will partially succeed is unknown to the spider. Using trial-anderror, P.fimbriata solves the confinement problem both when correct choices are rewarded (i.e. when the spider is moved closer to edge of tray) and when incorrect choices are punished (i.e. when the spider gets no closer to edge of tray).
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| All Time | Past 365 days | Past 30 Days | |
|---|---|---|---|
| Abstract Views | 2186 | 154 | 12 |
| Full Text Views | 339 | 14 | 1 |
| PDF Views & Downloads | 226 | 30 | 3 |
TRIAL-AND-ERROR SOLVING OF A CONFINEMENT PROBLEM BY A JUMPING SPIDER, PORTIA FIMBRIATA
In: BehaviourSearch for other papers by Robert Jackson in
Current site
Google Scholar
PubMed
Search for other papers by Chris Carter in
Current site
Google Scholar
PubMed
Search for other papers by Michael Tarsitano in
Current site
Google Scholar
PubMed
Abstract
Portia is a genus of web-invading araneophagic jumping spiders known from earlier studies to derive aggressive-mimicry signals by using a generate-and-test algorithm (trial-and-error tactic). Here P. fimbriata's use of trial-and-error to solve a confinement problem (how to escape from an island surrounded by water) is investigated. Spiders choose between two potential escape tactics (leap or swim), one of which will fail (bring spider no closer to edge of tray) and the other of which will partially succeed (bring spider closer to edge of tray). The particular choice that will partially succeed is unknown to the spider. Using trial-anderror, P.fimbriata solves the confinement problem both when correct choices are rewarded (i.e. when the spider is moved closer to edge of tray) and when incorrect choices are punished (i.e. when the spider gets no closer to edge of tray).
| All Time | Past 365 days | Past 30 Days | |
|---|---|---|---|
| Abstract Views | 2186 | 154 | 12 |
| Full Text Views | 339 | 14 | 1 |
| PDF Views & Downloads | 226 | 30 | 3 |
