Document Detail

Thrips pollination of Mesozoic gymnosperms.
MedLine Citation:
PMID:  22615414     Owner:  NLM     Status:  MEDLINE    
Within modern gymnosperms, conifers and Ginkgo are exclusively wind pollinated whereas many gnetaleans and cycads are insect pollinated. For cycads, thrips are specialized pollinators. We report such a specialized pollination mode from Early Cretaceous amber of Spain, wherein four female thrips representing a genus and two species in the family Melanthripidae were covered by abundant Cycadopites pollen grains. These females bear unique ring setae interpreted as specialized structures for pollen grain collection, functionally equivalent to the hook-tipped sensilla and plumose setae on the bodies of bees. The most parsimonious explanation for this structure is parental food provisioning for larvae, indicating subsociality. This association provides direct evidence of specialized collection and transportation of pollen grains and likely gymnosperm pollination by 110-105 million years ago, possibly considerably earlier.
Enrique Peñalver; Conrad C Labandeira; Eduardo Barrón; Xavier Delclòs; Patricia Nel; André Nel; Paul Tafforeau; Carmen Soriano
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2012-05-21
Journal Detail:
Title:  Proceedings of the National Academy of Sciences of the United States of America     Volume:  109     ISSN:  1091-6490     ISO Abbreviation:  Proc. Natl. Acad. Sci. U.S.A.     Publication Date:  2012 May 
Date Detail:
Created Date:  2012-05-30     Completed Date:  2012-08-24     Revised Date:  2013-06-24    
Medline Journal Info:
Nlm Unique ID:  7505876     Medline TA:  Proc Natl Acad Sci U S A     Country:  United States    
Other Details:
Languages:  eng     Pagination:  8623-8     Citation Subset:  IM    
Museo Geominero, Instituto Geológico y Minero de España, Madrid E-28003, Spain.
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MeSH Terms
Biological Evolution
Cycadophyta / classification,  parasitology,  physiology
Gymnosperms / classification,  parasitology,  physiology*
Host-Parasite Interactions
Paleontology / methods
Pollen / physiology*
Pollination / physiology*
Species Specificity
Thysanoptera / anatomy & histology,  classification,  physiology*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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