Biogeography of Chilean Bees in the Atacama Desert: With a Focus on the Boundary Between Summer and Winter Rainfall Regions

Simple item page
dc.contributor.advisorPacker, Laurence
dc.creatorPostlethwaite, James Victor
dc.date.accessioned2016-11-25T14:13:44Z
dc.date.available2016-11-25T14:13:44Z
dc.date.copyright2016-08-19
dc.date.issued2016-11-25
dc.date.updated2016-11-25T14:13:43Z
dc.degree.disciplineBiology
dc.degree.levelMaster's
dc.degree.nameMSc - Master of Science
dc.description.abstractThere are two rainfall regimes in northern Chile where the majority of rain in the northeast occurs during the austral summer while the southwest receives rain mainly during the austral winter. The transition zone between these two rainfall regimes may have influenced speciation events in northern Chile by serving as a barrier to dispersal. This study tests for disjunct sister groups in the bee genera Neofidelia (Megachilidae), Callonychium (Andrenidae), and Caenohalictus (Halictidae) using the Spatial Analysis Vicariance method. Phylogenetic trees were constructed with mtDNA CO1 sequences for Callonychium and Caenohalictus and a combination of morphological and molecular data for Neofidelia. The Vicariance Inference Program returned a total of 4 disjunct nodes among the three genera with sister taxa residing on either side of the summer/winter rainfall transition zone in each of them. I conclude that the transition zone between summer/winter rainfall acts as a barrier to dispersal in northern Chile.
dc.identifier.urihttp://hdl.handle.net/10315/32756
dc.language.isoen
dc.rightsAuthor owns copyright, except where explicitly noted. Please contact the author directly with licensing requests.
dc.subjectBiology
dc.subject.keywordsBiogeography
dc.subject.keywordsChile
dc.subject.keywordsVicariance
dc.subject.keywordsMegachilidae
dc.subject.keywordsAndrenidae
dc.subject.keywordsHalictidae
dc.titleBiogeography of Chilean Bees in the Atacama Desert: With a Focus on the Boundary Between Summer and Winter Rainfall Regions
dc.typeElectronic Thesis or Dissertation

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Postlethwaite_James_V_2016_Masters.pdf
Size:
1.05 MB
Format:
Adobe Portable Document Format
Download
License bundle
Now showing 1 - 2 of 2
No Thumbnail Available
Name:
license.txt
Size:
1.83 KB
Format:
Plain Text
Description:
Download
No Thumbnail Available
Name:
YorkU_ETDlicense.txt
Size:
3.38 KB
Format:
Plain Text
Description:
Download

Collections

Biology

All items in the YorkSpace institutional repository are protected by copyright, with all rights reserved except where explicitly noted.