Speciation among Lampreys
Copyright policy ) S.J. GIUSEPPE ZANANDREA;
Speciation among Lampreys
NOT all lampreys migrate to the sea. Some (the ‘landlocked’) always remain in fresh water; but after metamorphosis they migrate from the brooks, where they are born, to lakes and rivers. After a long feeding period they go back to the brooks, where they spawn and then die. This is known to happen with Petromyzon marinus, the landlocked form of which multiplied abundantly and spread widely in the Great Lakes of North America1. The same phenomenon was recorded for Lampetra fluviatilis of Lakes Ladoga and Onega in the U.S.S.R.2
- University of Padua Italy
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These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
Citations provided by BIP!popularityPopularity provided by BIP!
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
Popularity provided by BIP! 47
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