The Naming of Wild Hybrid Swarms

Cockayne, Leonard; Allan, H. H.

doi:10.1038/118623a0

Cited by 13 publications

(14 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Biologists have long known that interspecific hybrids are common in nature and occur at a range of evolutionary timescales (Müller 1868;Henshaw 1885;Hollick 1888;Elliot 1892;McCormick 1893;Cockayne and Allan 1926). We also now know that many genomes, including our own, bear the signature of past hybridization with closely related species (Heliconius Genome Consortium 2012; Sankararaman et al 2014).…”

mentioning

confidence: 99%

Intermediate Kinematics Produce Inferior Feeding Performance in a Classic Case of Natural Hybridization

McGee

Reustle

Oufiero

et al. 2015

The American Naturalist

View full text Add to dashboard Cite

Dryad data: http://dx.doi.org/10.5061/dryad.5g8c5.abstract: Selection on naturally occurring hybrid individuals is a key component of speciation theory, but few studies examine the functional basis of hybrid performance. We examine the functional consequences of hybridization in nature, using the freshwater sunfishes (Centrarchidae), where natural hybrids have been studied for more than a century and a half. We examined bluegill (Lepomis macrochirus), green sunfish (Lepomis cyanellus), and their naturally occurring hybrid, using prey-capture kinematics and morphology to parameterize suction-feeding simulations on divergent parental resources. Hybrid individuals exhibited kinematics intermediate between those of the two parental species. However, performance assays indicated that hybrids display performance most similar to the worse-performing species for a given parental resource. Our results show that intermediate hybrid phenotypes can be impaired by a lessthan-intermediate performance and hence suffer a larger loss in fitness than could be inferred from morphology alone.Keywords: functional morphology, suction feeding, ecological speciation, extrinsic postzygotic isolation.What role does hybridization play in the origin of species? Biologists have long known that interspecific hybrids are common in nature and occur at a range of evolutionary timescales (Müller 1868; Henshaw 1885; Hollick 1888; Elliot 1892; McCormick 1893; Cockayne and Allan 1926). We also now know that many genomes, including our own, bear the signature of past hybridization with closely related species (Heliconius Genome Consortium 2012;Sankararaman et al. 2014). However, it is currently unclear whether hybridization plays a major role in the generation of new biodiversity (Seehausen 2004) or whether it is primarily a reflection of costly mistakes in mate choice by the parental species (Anderson and Stebbins 1954).Most research on hybridization focuses on selection against hybrid individuals, often called postzygotic isolation, which is thought to play a critical role in speciation Orr 1989, 2004;Turelli et al. 2001). Much of this research focuses on intrinsic incompatibilities, which can cause hybrid offspring to be inviable, sterile, or sex biased (Orr and Turelli 2001). Extrinsic postzygotic isolation, sometimes called ecological speciation, also involves selection against hybrid individuals that are viable under laboratory conditions but disfavored by natural selection in the wild (Schluter 1995). Recently, progress has been made on the mechanisms of intrinsic postzygotic isolation (Martin and Willis 2010; Cattani and Presgraves 2012), but we are also starting to understand ecological speciation mechanisms, which depend crucially on ecological interactions (Arnegard et al. 2014).Hybridization can also create new species directly. In Galapagos finches, hybridization is thought to have given rise to a new, reproductively isolated population of finches that exhibit a beak phenotype and a male song different from those of either of the two pa...

show abstract

mentioning

confidence: 99%

Intermediate Kinematics Produce Inferior Feeding Performance in a Classic Case of Natural Hybridization

McGee

Reustle

Oufiero

et al. 2015

The American Naturalist

View full text Add to dashboard Cite

show abstract

“…Cockayne andAllan (e.g., 1926, 1927) in several papers described hybrid plants f~om New Zealand and discussed the possible role of hybridization in evolution. In 1928 Ostenfeld summarized the literature to that date and further emphasized the importance of hybridization in the pro~uc tion of new recombination types, especially in cultivated plants.…”

Section: Introductionmentioning

confidence: 99%

Hybridization in the Red-Eyed Towhees of Mexico

Sibley

1954

Evolution

View full text Add to dashboard Cite

“…The question of priority for the discovery is discussed in a footnote on p. \0 of Cockayne's "Monograph on the New Zealand beech forests" (Cockayne 1926a (Wastney 1921). Wastney refers to the great confusion in Nelson and Marlborough regarding "Fagus fusca".…”

mentioning

confidence: 99%

“…17 Photographs of the study area between Elfin Bay and Rere Lake were published in Cockayne (1921a) and Cockayne (1926a). The photographs were taken by W.O.…”

mentioning

confidence: 99%