Abstract
1. Given the increasing threat of 'emerging infectious diseases' (EIDs), and the vulnerability of small inbred populations to such novel challenges (at least partly through compromised immunity), a degree of interspecific hybridization may improve the viability of endangered species by enriching depauperate gene pools. 2. To investigate this hypothesis, we quantified indicators of the strength of both innate and cell-mediated immunity in wild populations of hybridizing parakeets on the Chatham Islands, New Zealand. 3. We show that both measures of immune function are markedly higher in the cosmopolitan red-crowned parakeet Cyanoramphus novaezelandiae than in the island endemic Forbes' parakeet C. forbesi, as is to be expected when comparing relatively outbred vs. relatively inbred species. 4. In addition, we show that both measures of immune function are higher in Forbes'x red-crowned parakeet hybrids than in the Forbes' parakeet. Even those individuals with few red-crowned characteristics, suggesting they are the products of matings between hybrids and Forbes' parakeets, have significantly higher measures of immune function. 5. As at least one of the immune indicators measured correlates directly with both survivorship and the...Continue Reading
References
Dec 1, 1996·The Quarterly Review of Biology·R J Nelson, G E Demas
Jul 22, 1997·Proceedings of the National Academy of Sciences of the United States of America·P R Grant, B R Grant
Jan 22, 2000·Science·P DaszakA D Hyatt
May 23, 2000·Nature·A Purvis, A Hector
Dec 12, 2001·Heredity·W Amos, A Balmford
Jun 22, 2002·Science·C Drew HarvellMichael D Samuel
Jun 5, 2003·The American Naturalist·Anders Pape MøllerNicola Saino
Jun 21, 2003·Proceedings. Biological Sciences·Kevin J GastonKees Klein Goldewijk
Oct 17, 2003·Proceedings. Biological Sciences·Jane M ReidLukas F Keller
Dec 31, 2003·Proceedings of the National Academy of Sciences of the United States of America·James V Briskie, Myles Mackintosh
Aug 13, 2004·Proceedings. Biological Sciences·Karin M LindströmMartin Wikelski
Sep 17, 2004·Nature Reviews. Genetics·Rob DeSalle, George Amato
Dec 17, 2004·Proceedings of the National Academy of Sciences of the United States of America·Cağan H SekercioğluPaul R Ehrlich
Apr 10, 1992·Science·P R Grant, B R Grant
Sep 1, 1989·Trends in Ecology & Evolution·J C Avise
Oct 1, 1994·Trends in Ecology & Evolution·C Moritz
Citations
Feb 25, 2010·Archives of Virology·Luis Ortiz-CatedralArvind Varsani
Jan 27, 2007·Proceedings. Biological Sciences·Jane M ReidDennis Hasselquist
Mar 2, 2010·The Journal of Experimental Biology·R N M Sehgal
Sep 24, 2010·PLoS Pathogens·Caroline HarrisAnna Cohuet
May 29, 2012·Archives of Virology·Melanie MassaroArvind Varsani
Sep 17, 2014·Proceedings of the National Academy of Sciences of the United States of America·Justin R EastwoodAndrew T D Bennett
Oct 16, 2008·Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology·Juan F MaselloPetra Quillfeldt
Feb 26, 2008·Trends in Parasitology·Justyna WolinskaPiet Spaak
Jan 11, 2007·Journal of Evolutionary Biology·L T LuongM Polak
Nov 15, 2011·EcoHealth·John K Perrott, Doug P Armstrong
Jun 16, 2017·Ecology and Evolution·Elisa LobatoRita Covas
Jul 11, 2018·Ecology and Evolution·Amanda M SparkmanTonia S Schwartz
Feb 2, 2020·Parasitology Research·Jakub Vlček, Jan Štefka
Dec 7, 2019·Animals : an Open Access Journal From MDPI·Saul CowenSarah Comer
Nov 18, 2020·Heredity·Guilherme Caeiro-DiasCatarina Pinho