A TEST OF ECOLOGICALLY DEPENDENT POSTMATING ISOLATION BETWEEN SYMPATRIC STICKLEBACKS

@inproceedings{Rundle2002ATO,
  title={A TEST OF ECOLOGICALLY DEPENDENT POSTMATING ISOLATION BETWEEN SYMPATRIC STICKLEBACKS},
  author={Howard D. Rundle},
  booktitle={Evolution; international journal of organic evolution},
  year={2002}
}
  • H. Rundle
  • Published in
    Evolution; international…
    1 February 2002
  • Environmental Science
Abstract Ecological speciation occurs when reproductive isolation evolves ultimately as a result of divergent natural selection between populations inhabiting different environments or exploiting alternative resources. I tested a prediction of the ecological model concerning the fitness of hybrids between two young, sympatric species of threespine sticklebacks (Benthics and Limnetics). The two species are ecologically and morphologically divergent: the Benthic is adapted to feeding on… 

Ecological selection against hybrids in natural populations of sympatric threespine sticklebacks

TLDR
Testing for selection against naturally occurring hybrids in two sympatric species pairs of benthic and limnetic threespine sticklebacks revealed a decline in mean individual hybridity, providing compelling evidence that extrinsic selection plays an important role in maintaining species divergence and supports a role for ecological speciation in stickleback.

Components of premating reproductive isolation in threespine stickleback

TLDR
Habitat and mating isolation in the recently diverged benthic-limnetic species pairs of threespine stickleback are investigated, and generalized linear models indicated that interactions with other, unspecified species-specific traits increases isolation due to body size and, in benthics, due to colour.

Functional basis of ecological divergence in sympatric stickleback

TLDR
Kinematic data support the expectations from the morphological analysis that limnetic stickleback exhibit faster strikes and greater jaw protrusion than benthic fish, whereas benthics exert greater suction force on attached prey.

Ecologically dependent postmating isolation between sympatric host forms of Neochlamisus bebbianae leaf beetles

TLDR
This study provides a rare and strongly supported demonstration of genetically based, ecologically dependent postmating isolation during ecological speciation.

Divergent natural selection drives the evolution of reproductive isolation in an Australian wildflower

TLDR
Natural selection can create strong reproductive barriers that maintain differentiation between populations with the potential to interbreed, and implies a significant role for ecology in the evolutionary divergence of S. lautus.

Ecological Reproductive Isolation of Coast and Inland Races of Mimulus guttatus

TLDR
Analysis of the population structure and reproductive isolation between coastal perennial and inland annual forms of the yellow monkeyflower suggests that adaptations to widespread habitats can lead to the formation of reproductively isolated species.

FREQUENCY DEPENDENT NATURAL SELECTION DURING CHARACTER DISPLACEMENT IN STICKLEBACKS

  • D. Schluter
  • Biology, Environmental Science
    Evolution; international journal of organic evolution
  • 2003
TLDR
Results provide further support for the hypothesis of character displacement in sympatric sticklebacks and suggest that displacement along the resource gradient also led to divergence in vulnerability to agents of mortality, probably including predation.

Selection on hybrids of ecologically divergent ecotypes of a marine snail: the relative importance of exogenous and endogenous barriers

TLDR
It is shown how this barrier might represent an important type of reproductive isolation within ecological speciation, and this should be taken into account in future studies of speciation in hybrid zones.

Ecological speciation in Neochlamisus bebbianae leaf beetles: The role of postmating isolation and the genetic basis of host use traits

TLDR
F1 analyses alone cannot demonstrate that ecological factors contribute to postmating isolation between sympatric host forms of Neochlamisus bebbianae leaf beetles, and offers an insufficient explanation for them.

Speciation and the evolution of mating preferences in threespine sticklebacks (Gasterosteus aculeatus)

TLDR
It is determined that the mate preferences of the small species have shifted from preferring large females to preferring small females due either to selection against hybrids (reinforcement), or to egg predation by the larger benthic species.
...

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