For example, our response variables included (i) the proportion of pairs that produced eggs, (ii) the proportion that produced offspring, (iii) egg numbers, (iv) offspring numbers and (v) hatchling success rate (offspring/eggs). In each case, the main predictor of interest was female ...
Hybrid breakdown between 2 haplodiploid species— the role of nuclear and cytoplasmic genes. Evolution 49: 705–717. Burton RS, Ellison CK, Harrison JS (2006). The sorry state of F-2 hybrids: consequences of rapid mitochondrial DNA evolution in allopatric populations. Am Nat 168: S14–S24....
There is an extensive and growing body of evidence ofhybrid speciationacross plants and animals. The origin of a new reproductively isolatedlineagethrough hybridization has long been appreciated in plants, but was historically considered rare in animals. Theoretical models and empirical examples of hybri...
Hybrid zonesoccur where the ranges of species or other genetically distinct entities overlap; in these areas individuals from two species hybridize and produce offspring of mixed ancestry. The locations of many hybrid zones {e.g., black-capped (Poecile atricapillus) and Carolina (Poecile carolinensi...
Theory predicts that hybrid zones can move in space and time, with significant consequences for both evolutionary and conservation biology, though such movement is often perceived as rare. Here, a review of empirical studies of moving hybrid zones in animals and plants shows 23 examples with ...
The presence of Wolbachia severely reduces the frequency of hybrid offspring in interspecies crosses. However, antibiotic curing of the insects results in production of hybrids. Furthermore, F1 and F2 hybrids are completely viable and fertile, indicating the absence of F1 and F2 hybrid breakdown. ...
anthropomorphic animals and autobio in an offbeat hybrid of genres. Those who enjoy the surreal slice-of-life comic anecdotes ofJoe DecieorMatthew Dooley, alongside the introspection and fragile ego of Anna Haifisch’sThe Artistfrom Breakdown Press, will find this a tonal midway point between the...
The genomes of higher plants are, on the majority, polyploid, and hybridisation is more frequent in plants than in animals. Both polyploidisation and hybridisation contribute to increased variability within species, and may transfer adaptations between species in a changing environment. Studying these ...
Differential Information on the position of hybrid zones in the past adaptation of the parents may also cause movement may be provided by records of an alien introduction (for (Key, 1968; Barton and Hewitt, 1985). However, Barton example, Solenopsis, Orchelimum, Orconectes, Cervus and and ...
Recombination between parental chromosomes in the F1 generation breaks up co-adapted gene complexes and detrimental interactions are therefore more likely to be expressed in the F2. Known as 'hybrid breakdown', F2 hybrids are generally more strongly affected by detrimental epistatic interactions than ...