Skip to main content

Table 2 Search strings used to query online databases

From: A systematic review of phenotypic responses to between-population outbreeding


Search string

(i) Outbreeding related strings

Outbreeding depression OR out-breeding depression OR outcrossing depression OR out-crossing depression OR out-mating depression OR outmating depression


(Hybridisation OR hybridization) AND (population OR interpopulation OR inter-population) NOT (interspecific OR inter-specific)


Heterosis AND population

(ii) Search strings related to the movement of individuals for conservation purposes

Translocation AND conservation


Reinforcement AND conservation


Augmentation AND conservation


Restoration AND conservation


Genetic rescue AND conservation

(iii) Fitness related strings



Surviv* OR mortality OR longevity


Fecundity OR reproduc*

(iv) Catch-all search strings

Distance-dependent fitness


Distance-dependent crossing success


Distance-dependent mating success

  1. Boolean syntax follows the ISI Web of Knowledge template, and was adapted as necessary for use within databases using other syntax.