Local mate competition model alone cannot predict the offspring sex ratio in large and dense populations of a haplodiploid arthropod  

作　　者：Nuwan Weerawansha Qiao Wang Xiong Zhao He 

机构地区：[1]School of Agriculture and Environment,Massey University,Private Bag 11222,Palmerston North 4442,New Zeal [2]Faculty of Animal Science and Export Agriculture,Uva Wellassa University of Sri Lanka,Passara Road,Badulla 90000,Sri Lanka

出　　处：《Current Zoology》2023年第2期219-221,共3页动物学报（英文版）

基　　金：funded by Accelerating Higher Education Expansion and Development Project(AHEAD)launched by the Sri Lankan Government under the funds of the World Bank and Massey University,New Zealand.

摘　　要：Sex ratio in animals has profound impacts on the fitness of mothers and their offspring.When the local competition intensity is sex-specific,selection favors the sex that may mitigate such negative impacts(West 2009).This may occur under 1)local mate competition(LMC)-in a discrete population established by one or a few foundresses,they tend to produce female-biased offspring sex ratio to reduce the LMC between related males(Hamilton 1967);2)local resource competition(LRC)-in a dense population where related individuals compete for resources,mothers are selected to produce more off spring of dispersive sex to decrease resource competition(Clark 1978;Wild and Taylor 2004;Iritani et al.2021),and 3)local resource enhancement(LRE)-when one sex helps one another rather than compete with one another,selection favors an excess production of the more helpful sex(Taylor 1981).

关 键 词：COMPETITION cooperation population sizeanddensity sexallocation 

分 类 号：Q95[生物学—动物学]