The compounding effects of high pollen limitation, selfing rates and inbreeding depression leave a New Zealand tree with few viable offspring.

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dc.citation.issue5
dc.citation.volume116
dc.contributor.authorVan Etten ML
dc.contributor.authorTate JA
dc.contributor.authorAnderson SH
dc.contributor.authorKelly D
dc.contributor.authorLadley JJ
dc.contributor.authorMerrett MF
dc.contributor.authorPeterson PG
dc.contributor.authorRobertson AW
dc.date.available2015-10
dc.date.available2015-06-25
dc.date.issued2015-10
dc.description.abstractBACKGROUND AND AIMS: Interactions between species are especially sensitive to environmental changes. The interaction between plants and pollinators is of particular interest given the potential current global decline in pollinators. Reduced pollinator services can be compensated for in some plant species by self-pollination. However, if inbreeding depression is high, selfed progeny could die prior to reaching adulthood, leading to cryptic recruitment failure. METHODS: To examine this scenario, pollinator abundance, pollen limitation, selfing rates and inbreeding depression were examined in 12 populations of varying disturbance levels in Sophora microphylla (Fabaceae), an endemic New Zealand tree species. KEY RESULTS: High pollen limitation was found in all populations (average of 58 % reduction in seed production, nine populations), together with high selfing rates (61 % of offspring selfed, six populations) and high inbreeding depression (selfed offspring 86 % less fit, six populations). Pollen limitation was associated with lower visitation rates by the two endemic bird pollinators. CONCLUSIONS: The results suggest that for these populations, over half of the seeds produced are genetically doomed. This reduction in the fitness of progeny due to reduced pollinator service is probably important to population dynamics of other New Zealand species. More broadly, the results suggest that measures of seed production or seedling densities may be a gross overestimate of the effective offspring production. This could lead to cryptic recruitment failure, i.e. a decline in successful reproduction despite high progeny production. Given the global extent of pollinator declines, cryptic recruitment failure may be widespread.
dc.description.publication-statusPublished
dc.format.extent833 - 843
dc.identifierhttp://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000362842400016&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=c5bb3b2499afac691c2e3c1a83ef6fef
dc.identifier.citationANNALS OF BOTANY, 2015, 116 (5), pp. 833 - 843
dc.identifier.doi10.1093/aob/mcv118
dc.identifier.eissn1095-8290
dc.identifier.elements-id255478
dc.identifier.harvestedMassey_Dark
dc.identifier.issn0305-7364
dc.identifier.urihttps://hdl.handle.net/10179/9787
dc.relation.isPartOfANNALS OF BOTANY
dc.subjectCryptic recruitment failure
dc.subjectinbreeding depression
dc.subjectKowhai
dc.subjectmating system
dc.subjectMeliphagidae
dc.subjectpollen limitation
dc.subjectpollinator decline
dc.subjectreproductive ecology
dc.subjectSophora microphylla
dc.subject.anzsrc0602 Ecology
dc.subject.anzsrc0607 Plant Biology
dc.subject.anzsrc0705 Forestry Sciences
dc.titleThe compounding effects of high pollen limitation, selfing rates and inbreeding depression leave a New Zealand tree with few viable offspring.
dc.typeJournal article
pubs.notesNot known
pubs.organisational-group/Massey University
pubs.organisational-group/Massey University/College of Sciences
pubs.organisational-group/Massey University/College of Sciences/School of Natural Sciences
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