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Concerted Evolution of Repetitive DNA Sequences in Eukaryotes
TLDR
It is argued that any natural grouping that is characterized by reproductive isolation and limited gene flow is capable of exhibiting concerted evolution of repetitive DNA arrays, and thus has important implications for the differentiation and discrimination of natural populations.
Extensive outcrossing and androdioecy in a vertebrate species that otherwise reproduces as a self-fertilizing hermaphrodite.
TLDR
It is found that outcrossing (probably between gonochoristic males and hermaphrodites) is common at the Belize site, and the dramatic impact that functional androdioecy can have on the population genetic architecture of this reproductively unique vertebrate species is demonstrated.
Evolutionary genetics of Death Valley pupfish populations: mitochondrial DNA sequence variation and population structure
TLDR
The present distribution of haplotypes in Death Valley has probably resulted from stochastic, and in some cases, incomplete sorting of ancestral variation, and provides an important example of the limitations inherent in defining evolutionarily significant units (ESUs) for conservation purposes based on mtDNA sequence variation alone.
A mixed-mating strategy in a hermaphroditic vertebrate
TLDR
A remarkable instance of evolutionary convergence to an analogous mixed mating system by a vertebrate, the mangrove killifish (Kryptolebias marmoratus), is documented, resulting in a local population genetic pattern that differs qualitatively from the genetic architectures known in any other vertebrate species.
Reproductive isolation among endemic pupfishes (Cyprinodon) on San Salvador Island, Bahamas: microsatellite evidence
TLDR
Survey of variation at eight microsatellite loci reveals that sympatric normal and bulldog populations are genetically distinctive by several criteria, and are therefore likely reproductively isolated, and suggest that the bulldogs in the latter two lakes did not evolve by intralacustrine speciation from the current sympatrics normal populations.
A Novel Terrestrial Fish Habitat inside Emergent Logs
TLDR
The dense packing of fish in the narrow log galleries may imply a novel social context in which intraspecific aggressive behaviors are reduced, possibly mediated by the physiological limitations imposed within this restrictive habitat.
Field observations of the ecology and habitsof mangrove rivulus (Rivulus marmoratus)in Belize and Florida(Teleostei: Cyprinodontiformes: Rivulidae)
TLDR
The combined observations demonstrate that this species is not "rare" or " elusive" as previously thought, but elusive and highly adapted to microhabitats within mangrove forests.
Evolution of 'maleness' and outcrossing in a population of the self-fertilizing killifish, Kryptolebias marmoratus
TLDR
Genetic differences exist between the Twin Cays population and other populations in the tendency to produce males, and this genetic difference may indicate a shift from predominant selfing to outcrossing, a direction not predicted by current theory.
GENIC VARIATION AND DIFFERENTIATION OF REMNANT NATURAL POPULATIONS OF THE DESERT PUPFISH, CYPRINODON MACULARIUS
  • B. Turner
  • Environmental Science, Biology
    Evolution; international journal of organic…
  • 1 July 1983
TLDR
Results of an intensive allozyme survey of remnant populations of the desert pupfish, C. macularius, reveal that intraspecific differentiation is at the low level of the interspecific differentiation noted earlier, and suggest that the role of geographic isolation per se in fostering the differentiation of relict fish populations may have been overestimated.
Diabolical survival in Death Valley: recent pupfish colonization, gene flow and genetic assimilation in the smallest species range on earth
TLDR
It is estimated that Devils Hole was colonized by pupfish between 105 and 830 years ago, followed by genetic assimilation of pelvic fin loss and recent gene flow into neighbouring spring systems and support an emerging consensus that timescales for speciation are overestimated in many groups of rapidly evolving species.
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