?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=Outcome+of+dyadic+conflict+in+male+green+swordtail+fish%2C+Xiphophorus+helleri%3A+effects+of+body+size+and+prior+dominance&rft.creator=Beaugrand%2C+Jacques+P.&rft.creator=Goulet%2C+Claude&rft.creator=Payette%2C+Daniel&rft.subject=Animal+Behavior&rft.subject=Behavioral+Biology&rft.subject=Ethology&rft.description=The+relative+contribution+of+prior+experience+and+of+size+asymmetries+to+the+determination+of+dyadic+dominance+between+unfamiliar+individuals+was+examined+using+pairs+of+green+swordtail+fish%2C+Xiphophorus+helleri.+Three+experiments+were+conducted+to+assess+the+extent+to+which+superiority+in+size+could+override+potential+handicaps+resulting+from+prior+experience.+These+results+indicated+that+prior+experience+accounted+for+dyadic+dominance+when+the+size+advantage+of+a+previously+subordinate+over+a+previously+dominant+opponent+was+less+than+25+mm2.+However%2C+as+the+lateral+surface+of+the+subordinate+fish+increased%2C+neither+previous+experience+nor+size+differences+clearly+accounted+for+the+outcome+of+dyadic+conflict.+Even+when+the+size+advantage+of+subordinate+opponents+was+in+the+126-150+mm2+range%2C+size+differences+did+not+adequately+explain+the+outcome.+In+conflicts+between+large+previously+subordinate+and+smaller+dominant+fish%2C+there+was+evidence+for+an+inverse+linear+relation+between+the+effects+of+size+and+the+likelihood+of+establishing+dyadic+dominance.+In+general%2C+males+with+prior+experience+as+subordinates+had+to+be+at+least+40%25+larger+than+a+previously+dominant+fish+to+win+a+significant+proportion+of+conflicts.+These+results+indicate+that+prior+agonistic+experience+and+body+size+effects+can+be+additive+when+at+the+advantage+of+one+opponent.+These+factors+can+also+cancel+each+other+out+when+in+opposition%2C+at+least+when+size+differences+are+not+extreme.+The+results+also+confirm+the+main+effect+of+both+factors+as+well+as+their+interaction+in+the+determination+of+conflict+outcomes+for+X.+helleri.%0A&rft.publisher=J.+Brill&rft.date=1991&rft.type=Journal+(Paginated)&rft.type=PeerReviewed&rft.format=application%2Fpdf&rft.identifier=http%3A%2F%2Fcogprints.org%2F1966%2F3%2Fbeaugrand-goulet-payette-1991.pdf&rft.identifier=++Beaugrand%2C+Jacques+P.+and+Goulet%2C+Claude+and+Payette%2C+Daniel++(1991)+Outcome+of+dyadic+conflict+in+male+green+swordtail+fish%2C+Xiphophorus+helleri%3A+effects+of+body+size+and+prior+dominance.++%5BJournal+(Paginated)%5D+++++&rft.relation=http%3A%2F%2Fcogprints.org%2F1966%2F