DOI: 10.5061/dryad.p2ngf1vpk
title: Data from: Variance in within-pair reproductive success influences the opportunity for selection annually and over the lifetimes of males in a multi-brooded songbird

description: In socially monogamous species, male reproductive success consists of
 ‘within-pair’ offspring produced with their socially-paired mate(s), and
 ‘extra-pair’ offspring produced with additional females throughout the
 population. Both reproductive pathways offer distinct opportunities for
 selection in wild populations, as each is composed of separate components
 of mate attraction, female fecundity, and paternity allocation.
 Identifying key sources of variance and covariance among these components
 is a crucial step towards understanding the reproductive strategies that
 males use to maximize fitness both annually and over their lifetimes. We
 use 16 years of complete reproductive data from a population of
 black-throated blue warblers (Setophaga caerulescens) to partition
 variance in male annual and lifetime reproductive success, and thereby
 identify if the opportunity for selection varies over the lifetimes of
 individual males and what reproductive strategies likely favor maximum
 lifetime fitness. The majority of variance in male reproduction was
 attributable to within-pair success, but the specific effects of
 individual components of variance differed between total annual and total
 lifetime reproductive success. Positive overall lifetime covariance
 between within-pair and extra-pair components indicates that males able to
 maximize within-pair success, particularly with double-brooding females,
 likely achieve higher overall lifetime fitness via both within-pair and
 extra-pair reproductive pathways.
description: Data for '<b>Variance in within-pair reproductive
 success influences the opportunity for selection annually and over the
 lifetimes of males in a multi-brooded songbird</b>'<br>
 Germain, Hallworth, Kaiser, Sillett, Webster, Evolution 2021.
 This file contains all male Black-throated blue warblers present
 in our study area at Hubbard Brook Experimental Forest from
 1999-2015. For each entry (male-year), the identity,
 number of broods, number of offspring per brood, and number of young sired
 by the focal male are listed for all social and extra-pair females. Where
 males have multiple socially-paired females, data for each social female
 is presented in a separate row. Key to
 variables: 
 Male_ID   Identity of Focal Male Year   Year of study male_age   Age of Focal Male Terr_Boundary_210 Is Male's territory within 210m of the study area boundary? (0 = no, 1 = yes) Num_Social_Fems Number of Social Females Social_Fem_ID_char Social Female ID social_female_age Age of Social Female Num_Broods_Social_Fem Number of broods laid by Social Female Num_Kids_Social_Fem Number of offspring produced by Social Female Num_Kids_per_Brood_Social_Fem Number of offspring per brood Num_WP_Kids   Number of young sired by focal male prop_Pat_Social_Fem Proportion of young sired by focal male Social_Fem_EXPMT Brood part of an experiment? (0 = no, 1 = yes) EP_FEM_1_ID   Extra-Pair Female(1-5) ID EP_Fem1_age   Extra-Pair Female(1-5) age Num_Broods_EPFem1 Number of broods laid by Extra-Pair Female(1-5) Num_Kids_EPFem1 Number of offspring produced by Extra-Pair Female(1-5) Num_Kids_per_Brood_EP_Fem1 Number of offspring per brood Num_EP_Kids_EPFem1 Number of young sired by focal male prop_Pat_EPFem1 Proportion of young sired by focal male EP_Fem1_EXPMT   Brood part of an experiment? (0 = no, 1 = yes) EP_Fem1_Social_Mate_ID Identity of Extra-Pair Female(1-5)'s Social Male EP_Fem1_Social_Mate_age Age of Extra-Pair Female(1-5)'s Social Male