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Experimental hybridization of two African Streptocephalus species (Crustacea, Branchiopoda: Anostraca)

Henri Dumont (UGent) and Els Adriaens (UGent)
(2009) Current Science. 96(1). p.88-90
Author
Organization
Abstract
Fairy shrimp are ancient crustaceans that live in islands of ephemeral waters all over the world. Although an ancient group, there is evidence that they evolve slowly and thus, genetic differences between species can be relatively small. Here, we hybridize two African species of Streptocephalus with overlapping geographical ranges, and find that hybrids have reduced viability. We postulate a model of allopatric speciation, and discuss what may happen if sympatry is secondarily regained. We argue that strong pre- and post-mating barriers should be favoured if speciation has proceeded in conditions where the risk of sympatry is non-negligible. In species that evolved in absolute allopatry (like in Africa and North America), no selection for such barriers exists, however. Man nowadays increasingly interferes with incipient speciation by artificially connecting ephemeral pools, in which case full introgression may occur.
Keywords
Broods, Streptocephalus species, cysts, laboratory cultures, hybridization

Citation

Please use this url to cite or link to this publication:

MLA
Dumont, Henri, and Els Adriaens. “Experimental Hybridization of Two African Streptocephalus Species (Crustacea, Branchiopoda: Anostraca).” Current Science 96.1 (2009): 88–90. Print.
APA
Dumont, H., & Adriaens, E. (2009). Experimental hybridization of two African Streptocephalus species (Crustacea, Branchiopoda: Anostraca). Current Science, 96(1), 88–90.
Chicago author-date
Dumont, Henri, and Els Adriaens. 2009. “Experimental Hybridization of Two African Streptocephalus Species (Crustacea, Branchiopoda: Anostraca).” Current Science 96 (1): 88–90.
Chicago author-date (all authors)
Dumont, Henri, and Els Adriaens. 2009. “Experimental Hybridization of Two African Streptocephalus Species (Crustacea, Branchiopoda: Anostraca).” Current Science 96 (1): 88–90.
Vancouver
1.
Dumont H, Adriaens E. Experimental hybridization of two African Streptocephalus species (Crustacea, Branchiopoda: Anostraca). Current Science. 2009;96(1):88–90.
IEEE
[1]
H. Dumont and E. Adriaens, “Experimental hybridization of two African Streptocephalus species (Crustacea, Branchiopoda: Anostraca),” Current Science, vol. 96, no. 1, pp. 88–90, 2009.
@article{700537,
  abstract     = {{Fairy shrimp are ancient crustaceans that live in islands of ephemeral waters all over the world. Although an ancient group, there is evidence that they evolve slowly and thus, genetic differences between species can be relatively small. Here, we hybridize two African species of Streptocephalus with overlapping geographical ranges, and find that hybrids have reduced viability. We postulate a model of allopatric speciation, and discuss what may happen if sympatry is secondarily regained. We argue that strong pre- and post-mating barriers should be favoured if speciation has proceeded in conditions where the risk of sympatry is non-negligible. In species that evolved in absolute allopatry (like in Africa and North America), no selection for such barriers exists, however. Man nowadays increasingly interferes with incipient speciation by artificially connecting ephemeral pools, in which case full introgression may occur.}},
  author       = {{Dumont, Henri and Adriaens, Els}},
  issn         = {{0011-3891}},
  journal      = {{Current Science}},
  keywords     = {{Broods,Streptocephalus species,cysts,laboratory cultures,hybridization}},
  language     = {{eng}},
  number       = {{1}},
  pages        = {{88--90}},
  title        = {{Experimental hybridization of two African Streptocephalus species (Crustacea, Branchiopoda: Anostraca)}},
  volume       = {{96}},
  year         = {{2009}},
}

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