منابع مشابه
Condition-dependent sexual selection can accelerate adaptation
Sexual selection is responsible for much of the spectacular natural diversity of mating traits. It is unclear, however, how this powerful evolutionary force affects the evolution of traits unrelated to mating. Four recent theoretical studies have argued that sexual selection might increase the rate of adaptation, but each relies on the assumption of a substantial positive covariance between mal...
متن کاملSexual Selection and Adaptation to Novel Environments
Martinossi-Allibert, I. 2017. Sexual Selection and Adaptation to Novel Environments. Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology 1590. 40 pp. Uppsala: Acta Universitatis Upsaliensis. ISBN 978-91-513-0131-0. The work included in this thesis aims at exploring the environmental sensitivity of benefits and costs of sexual selection through a c...
متن کاملGene order constrains adaptation in bacteriophage T7.
The order of genes in the genome is commonly thought to have functional significance for gene regulation and fitness but has not heretofore been tested experimentally. We adapted a bacteriophage T7 variant harboring an ectopically positioned RNA polymerase gene to determine whether it could regain the fitness of the wild type. Two replicate lines maintained the starting gene order and showed on...
متن کاملWhy mammalian lineages respond differently to sexual selection: metabolic rate constrains the evolution of sperm size.
The hypothesis that sperm competition should favour increases in sperm size, because it results in faster swimming speeds, has received support from studies on many taxa, but remains contentious for mammals. We suggest that this may be because mammalian lineages respond differently to sexual selection, owing to major differences in body size, which are associated with differences in mass-specif...
متن کاملSexual selection constrains the body mass of male but not female mice
Sexual size dimorphism results when female and male body size is influenced differently by natural and sexual selection. Typically, in polygynous species larger male body size is thought to be favored in competition for mates and constraints on maximal body size are due to countervailing natural selection on either sex; however, it has been postulated that sexual selection itself may result in ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Experimental Biology
سال: 2013
ISSN: 1477-9145,0022-0949
DOI: 10.1242/jeb.090225