Results 171 to 180 of about 11,513 (226)

Lampreys and Lamprey Fisheries in Finland

Canadian Journal of Fisheries and Aquatic Sciences, 1980
There are three lamprey species in Finland. European river lamprey (Lampetra fluviatilis) is common along the coast of Finland and 28 rivers are known to support spawning populations while landlocked river lamprey populations exist in three watercourses.
P. Tuunainen, E. Ikonen, H. Auvinen
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Developmental anatomy of lampreys

Biological Reviews, 2010
Lampreys are a group of aquatic chordates whose relationships to hagfishes and jawed vertebrates are still debated. Lamprey embryology is of interest to evolutionary biologists because it may shed light on vertebrate origins. For this and other reasons, lamprey embryology has been extensively researched by biologists from a range of disciplines ...
Michael K, Richardson   +2 more
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Structure of Lamprey Haemoglobin

Nature New Biology, 1971
The crystal structure of haemoglobin V from the sea lamprey Petromyzon marinushas been analysed by X-ray diffraction. This report describes the structure of the cyanide complex of methaemo-globin crystals, type D2.
W A, Hendrickson, W E, Love
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Olfactory Sensitivity of Pacific Lampreys to Lamprey Bile Acids

Transactions of the American Fisheries Society, 2009
AbstractPacific lampreysLampetra tridentataare in decline throughout much of their historical range in the Columbia River basin. In support of restoration efforts, we tested whether larval and adult lamprey bile acids serve as migratory and spawning pheromones in adult Pacific lampreys, as they do in sea lampreysPetromyzon marinus.
T. Craig Robinson   +3 more
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Neoteny in a Lamprey

Nature, 1957
SPONTANEOUS and artificially induced neoteny are well known in Amphibia, and full sexual maturity appears to be attained by the parr stage of Salmo salar. But, so far as I am aware, neoteny has never been recorded in the cyclostomes. Young1 has directed attention to the fact that some lampreys show a speeding up of the time of sexual maturity relative ...
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