Evidence of a link between survival and pair fidelity across multiple tit populations

摘要: Although they have the potential to strongly influence individual fitness and dynamics productivity of populations, survival consequences pairing outcomes current on those in future rarely been addressed. Previously, we shown that pair fidelity increases both a population great tits Parus major. The aim this study was explore generality our previous findings by evaluating paring two different species populations. We addressed aims within multievent capture–mark–recapture (MECMR) statistical framework, which accounts for differences recapture rates uncertainty assignment status (i.e. whether an is breeding with same partner or not). applied framework records tit populations one blue Cyanistes caeruleus population. detected benefits increased survival) all three These were similar but higher male than tits. found age-dependence rate shared between species, did not detect any status. Our highlights importance considering when studying fidelity. Some are likely result long-term short-term demographic environmental factors advocate use MECMR used here further exploration these differences.