منابع مشابه
Hybrid Breakdown in Cichlid Fish
Studies from a wide diversity of taxa have shown a negative relationship between genetic compatibility and the divergence time of hybridizing genomes. Theory predicts the main breakdown of fitness to happen after the F1 hybrid generation, when heterosis subsides and recessive allelic (Dobzhansky-Muller) incompatibilities are increasingly unmasked. We measured the fitness of F2 hybrids of Africa...
متن کاملAdaptive radiation of cichlid fish
7. Optican, L., and Robinson, D. (1980). Cerebellar-dependent adaptive control of primate scaccadic system. J. Neurophysiol. 44, 1058–1076. 8. Courchesne, E., Townsend, J., Akshoomoff, N., Saitoh, O., YeungCourchesne, R., Lincoln, A., James, H., Haas, R., Schreibman, L., and Lau, L. (1994). Impairment in shifting attention in autistic and cerebellar patients . Behav. Neurosci. 108, 848–865. 9. ...
متن کاملVisualising Speciation in Models of Cichlid Fish
An Agent-Based model of speciation in cichlid fish has been implemented. When run, this generates large amounts of trace data in which speciation is an implicit, near unobservable, processes. Fuzzy C-Means Clustering is used to identify species extant at the end of simulation, and the power set of these species is the potential set of ancestral species. Membership values for all fish in each of...
متن کاملProbing aggressive motivation in a cichlid fish.
The duration of startles provides an inverse measure of motivation to resume the previous activity. Here, we use a novel method in which one convict cichlid fish (Amatitlania nigrofasciata) of a competing pair was startled independently of the opponent. Fish were given various opponents and the mean startle duration determined. This mean was negatively correlated with the mean use of highly esc...
متن کاملDisruptive sexual selection on male nuptial coloration in an experimental hybrid population of cichlid fish.
Theory suggests that genetic polymorphisms in female mating preferences may cause disruptive selection on male traits, facilitating phenotypic differentiation despite gene flow, as in reinforcement or other models of speciation with gene flow. Very little experimental data have been published to test the assumptions regarding the genetics of mate choice that such theory relies on. We generated ...
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ژورنال
عنوان ژورنال: PLOS ONE
سال: 2015
ISSN: 1932-6203
DOI: 10.1371/journal.pone.0127207