sympatric speciation


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sympatric speciation

the occurrence of species formation without geographical isolation, genetic isolation occurring through other mechanisms.
References in periodicals archive ?
The Midas cichlids of Nicaragua are thus one of the best known examples for sympatric speciation. Within such a short time period new mutations are very unlikely to happen.
In the well documented case of sympatric speciation in Howea, the shift in flowering phenology between species on volcanic and calcareous soils dramatically reduced interspecific gene flow (Hipperson et al., 2016; Fig.
Then we compare the reproductive interference model with models of sympatric speciation based on host race formation and sexual selection, which have been considered the main drivers of genetic and habitat diversification in sympatric lacewings.
'If we can figure out how sympatric speciation can happen in a tiny crater lake, then we have to ask ourselves whether we think the same thing can happen on continents and in oceans, where most species live,' he says.
1994), mechanisms of true sympatric speciation have been suggested as well (reviewed in Martens 1997).
"As far as we are aware, Shoemaker and Ross are the first to demonstrate that social behavior influences sympatric speciation," assert Ross H.
This has major evolutionary implications since it may argue for sympatric speciation. Indeed, although still in debate, it has been repeatedly suggested that inquilines may have diverged from their sister host species (or from a common ancestor) through intraspecific parasitism [1, 6, 9, 10].
Parapatric speciation is speciation without geographical isolation by disruptive selection across environmental gradients (Gentry, 1989); that is, a special type of sympatric speciation (cf.