?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.relation=https%3A%2F%2Fpure.iiasa.ac.at%2Fid%2Feprint%2F4901%2F&rft.title=Evolution+of+Mixed+Maturation+Strategies+in+Semelparous+Life-histories%3A+the+Crucial+Role+of+Dimensionality+of+Feedback+Environment+%5BUpdated+18+August+1998%5D&rft.creator=Heino%2C+M.&rft.creator=Metz%2C+J.A.J.&rft.creator=Kaitala%2C+V.&rft.description=We+study+the+evolution+of+age-at-maturity+in+a+semelparous+life+history+with+two+age-classes.+An+individual+may+breed+in+the+first+year+of+its+life+and+die%2C+or+delay+breeding+to+the+second+year.+In+this+setting+a+mixed+strategy+means+that+a+fraction+of+the+individual's+offspring+breed+in+the+first+possible+breeding+event%2C+while+the+remaining+fraction+delay+breeding.+Current+theory+seems+to+imply+that+mixed+strategies+are+not+evolutionarily+stable+strategies+(ESS)+under+a+steady+state+population+dynamical+regime.+We+show+that+a+two-dimensional+feedback+environment+may+allow+the+evolution+of+mixed+age-at-maturity.+Furthermore%2C+different+phenotypes+need+to+perceive+the+environment+differently.+The+biological+reasoning+behind+these+conditions+is+different+resource+usage+or+predation+pressure+between+two+age-classes.+Thus%2C+the+conventional+explanations+for+the+occurrence+of+mixed+strategies+in++natural+populations%2C+environmental+stochasticity+or+complex+dynamics%2C+are+not+needed.&rft.publisher=WP-96-126&rft.date=1996-11&rft.type=Monograph&rft.type=NonPeerReviewed&rft.format=text&rft.language=en&rft.identifier=https%3A%2F%2Fpure.iiasa.ac.at%2Fid%2Feprint%2F4901%2F1%2FWP-96-126.pdf&rft.identifier=++Heino%2C+M.+%3Chttps%3A%2F%2Fpure.iiasa.ac.at%2Fview%2Fiiasa%2F122.html%3E+ORCID%3A+https%3A%2F%2Forcid.org%2F0000-0003-2928-3940+%3Chttps%3A%2F%2Forcid.org%2F0000-0003-2928-3940%3E%2C+Metz%2C+J.A.J.+%3Chttps%3A%2F%2Fpure.iiasa.ac.at%2Fview%2Fiiasa%2F206.html%3E%2C+%26+Kaitala%2C+V.++(1996).++Evolution+of+Mixed+Maturation+Strategies+in+Semelparous+Life-histories%3A+the+Crucial+Role+of+Dimensionality+of+Feedback+Environment+%5BUpdated+18+August+1998%5D.+++IIASA+Working+Paper.+IIASA%2C+Laxenburg%2C+Austria%3A+WP-96-126+++++