title: Evolution of reproductive life histories in island birds worldwide.
abstract: Island environments typically share characteristics such as impoverished biotas and less-seasonal climates, which should be conducive to specific adaptations by organisms. However, with the exception of morphological studies, broad-scale tests of patterns of adaptation on islands are rare. Here, I examine reproductive patterns in island birds worldwide. Reproductive life histories are influenced by latitude, which could affect the response to insularity; therefore, I additionally test this hypothesis. Island colonizers showed mostly bi-parental care, but there was a significant increase in cooperative breeding on islands. Additionally, I found support for previous suggestions of reduced fecundity, longer developmental periods and increased investment in young on islands. However, clutch size increased with latitude at a rate nearly five times faster on the mainland than on the islands revealing a substantially stronger effect of insularity at higher latitudes. Latitude and insularity may also interact to determine egg volume and incubation periods, but these effects were less clear. Analyses of reproductive success did not support an effect of reduced nest predation as a driver of reproductive change, but this requires further study. The effect of latitude detected here suggests that the evolutionary changes associated with insularity relate to environmental stability and improved adult survival.
authors.affiliation: CIBIO, Research Centre in Biodiversity and Genetic Resources, Campus Agrário de Vairão, Rua Padre Armando Quintas, 4485-661 Vairão, Portugal. rita.covas@gmail.com
authors.forename: Rita
authors.initials: R
authors.lastname: Covas
mesh_terms: D000818:Animals; D005075:Biological Evolution; D052284:Clutch Size; D003299:Cooperative Behavior; D005260:Female; D005843:Geography; D008297:Male; D009425:Nesting Behavior; D010063:Ovum / Q000254:growth & development; D046109:Passeriformes / Q000502:physiology*; D012098:Reproduction; D013997:Time Factors
references.citation: Evolution. 1966 Jun;20(2):174-184
references.pmid: 28563630
references.citation: Nature. 2001 May 10;411(6834):183-6
references.pmid: 11346792
references.citation: Nature. 2009 Feb 12;457(7231):830-6
references.pmid: 19212401
references.citation: Evolution. 2011 Jun;65(6):1607-22
references.pmid: 21644952
references.citation: Proc Biol Sci. 2002 Feb 7;269(1488):309-16
references.pmid: 11839200
references.citation: J Evol Biol. 2009 Jul;22(7):1367-75
references.pmid: 19508410
references.citation: BMC Evol Biol. 2008 Oct 27;8:296
references.pmid: 18954431
references.citation: Ecol Lett. 2006 Apr;9(4):428-34
references.pmid: 16623728
references.citation: Proc Natl Acad Sci U S A. 1992 May 15;89(10):4722-5
references.pmid: 1584808
references.citation: Comp Biochem Physiol A Mol Integr Physiol. 2006 Nov;145(3):295-311
references.pmid: 16632395
references.citation: Proc Biol Sci. 2007 Jun 7;274(1616):1349-57
references.pmid: 17374593
references.citation: Evolution. 2007 Nov;61(11):2558-69
references.pmid: 17714499
references.citation: Evolution. 2000 Apr;54(2):670-85
references.pmid: 10937242
references.citation: Ecol Lett. 2007 Jun;10(6):481-9
references.pmid: 17498147
references.citation: Biol Lett. 2011 Jun 23;7(3):425-8
references.pmid: 21227978
references.citation: Proc Biol Sci. 2006 Jun 7;273(1592):1375-83
references.pmid: 16777726
references.citation: Evolution. 2002 Dec;56(12):2505-18
references.pmid: 12583590
references.citation: Proc Biol Sci. 2006 Aug 22;273(1597):2077-82
references.pmid: 16846916
references.citation: Proc Biol Sci. 2003 Nov 7;270(1530):2207-14
references.pmid: 14613606
references.citation: Biol Rev Camb Philos Soc. 2011 Feb;86(1):97-116
references.pmid: 20394607
references.citation: Proc Biol Sci. 2002 Jul 7;269(1498):1359-65
references.pmid: 12079659
references.citation: Evolution. 2006 Feb;60(2):390-8
references.pmid: 16610329
references.citation: PLoS Biol. 2008 Dec 9;6(12):2650-7
references.pmid: 19071959
references.citation: Science. 2001 Apr 20;292(5516):494-7
references.pmid: 11313493
references.citation: Biol Rev Camb Philos Soc. 2002 Feb;77(1):1-26
references.pmid: 11911371
references.citation: J Anim Ecol. 2008 Mar;77(2):356-63
references.pmid: 18194261