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Reports of cryptic species have increased dramatically over the past two decades with the advent of relatively inexpensive DNA sequencing technology.Markus Pfenninger and Klaus Schwenk,of the Goethe-Universitat,in Frankfurt1,Germany,analyzed all known data on cryptic animal species and discovered that they are found in equal proportions throughout all major branches of the animal kingdom and occur in equal numbers in all biogeographieal regions.
Im extremely surprised by their results, says Alex Smith of the University of Guelph2 in Ontario3,Canada.Its a call to arms to keep doing the broad kind of genetic studies that we are doing.
Examples of cryptic species include the African elephant. A 2001 study found the elephants were actually two genetically distinct,non-interbreeding species,the African bush elephant and the African elephant. The species are currently listed as vulnerable and threatened,respectively,by the World Conservation Union 4.
In the early 1900s misidentification of mosquito species based on morphology confused attempts to control malaria in Europe.Ultimately,what was thought to be a single species was actually made up of six sibling species,only three of which transmitted the disease.The basic unit in biology is always the species,and you have to know what you are dealing with, Pfenninger says.Much previous research is now no longer used,he says,because it is not clear what species was being studied.5kriptik5tAksCnp
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