- Title
- Ecology and genetics of hybrid zones in the southern African Pycnonotus bulbul species complex
- Creator
- Lloyd, Penn, Craig, Adrian J F K, Hulley, Patrick E, Essop, M Faadiel, Bloomer, Paulette, Crowe, Timothy M
- Subject
- To be catalogued
- Date
- 1997
- Type
- text
- Type
- article
- Identifier
- http://hdl.handle.net/10962/447801
- Identifier
- vital:74675
- Identifier
- https://doi.org/10.1080/00306525.1997.9639720
- Description
- The closely related Blackeyed Bulbul Pycnonotus barbatus, Cape Bulbul P. capensis and Redeyed Bulbul P. nigricans have parapatric to locally sympatric distributions within southern Africa. Extensive hybridization along narrow transition zones between each of the three species pairs is described in a region of the Eastern Cape province, South Africa. The transition zones coincide with ecotones between different vegetation types, which in turn follow escarpments or mountain ranges. The lack of population density depressions within the hybrid zones, together with the variability of the hybrids, suggests the hybrids are viable. Sharp step clines in various phenotypic characters are described across the P. barbatus/P. nigricans hybrid zone. A mtDNA analysis found evidence of possible introgression between P. barbatus and P. capensis. All eight P. barbatus x P. nigricans hybrids analysed possessed P. barbatus mtDNA, suggesting the existence of either positive assortative mating or strong directional selection, but our data are unable to distinguish which.
- Format
- 7 pages, pdf
- Language
- English
- Relation
- Ostrich, Lloyd, P., Craig, A.J., Hulley, P.E., Essop, M.F., Bloomer, P. and Crowe, T.M., 1997. Ecology and genetics of hybrid zones in the southern African Pycnonotus bulbul species complex. Ostrich, 68(2-4), pp.90-96, Ostrich volume 68 number 2-4 90 96 1997 1727-947X
- Rights
- Publisher
- Rights
- Use of this resource is governed by the terms and conditions of the Taylor and Francis Online Terms and Conditions Statement (https://www.tandfonline.com/terms-and-conditions)
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Collections
Hulley, Patrick Elliot (Assoc Prof Emeritus)
Craig, Adrian JFK (Prof)
SDG 15. Life On Land
RU Department of Zoology and Entomology
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