Results 141 to 150 of about 737 (157)
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Ecological and Medicinal Importance of Lampreys (Cyclostomata: Petromyzontiformes: Petromyzontidae)
Middle East Research Journal Microbiology and BiotechnologyFor Pacific lampreys, life is not just about moving from freshwater to saltwater when they reach maturity, these ancient fish have to return to the same river environment where they were born. Going from a saltwater creature to a freshwater creature is not easy, however, and several modifications in appearance and physiology are necessary to survive ...
Carlos Henrique Marchiori +2 more
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Journal of Ichthyology, 2013
Arctic lamprey Lethenteron camtschaticum is an important and poorly studied component of the aquatic ecosystems in the Northern part of Eurasia. In this region, the species has two life history forms: anadromous and resident, which are very closely related genetically.
A. A. Makhrov +2 more
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Arctic lamprey Lethenteron camtschaticum is an important and poorly studied component of the aquatic ecosystems in the Northern part of Eurasia. In this region, the species has two life history forms: anadromous and resident, which are very closely related genetically.
A. A. Makhrov +2 more
openaire +1 more source
Journal of Fish Biology, 2012
Phylogenetic structure of four Lampetra species from the Pacific drainage of North America (western brook lamprey Lampetra richardsoni, Pacific brook lamprey Lampetra pacifica, river lamprey Lampetra ayresii and Kern brook lamprey Lampetra hubbsi) and unidentified Lampetra specimens (referred to as Lampetra sp.) from 36 locations was estimated using ...
D A, Boguski +3 more
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Phylogenetic structure of four Lampetra species from the Pacific drainage of North America (western brook lamprey Lampetra richardsoni, Pacific brook lamprey Lampetra pacifica, river lamprey Lampetra ayresii and Kern brook lamprey Lampetra hubbsi) and unidentified Lampetra specimens (referred to as Lampetra sp.) from 36 locations was estimated using ...
D A, Boguski +3 more
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Marine Biodiversity, 2019
Given the lack of genetic information about Mediterranean sea lamprey, taking advantage of recent capture of two individuals in the western Adriatic Sea, molecular analysis of a partial sequence of the mitochondrial DNA control region has been performed on two Mediterranean specimens for the first time.
Petetta A +6 more
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Given the lack of genetic information about Mediterranean sea lamprey, taking advantage of recent capture of two individuals in the western Adriatic Sea, molecular analysis of a partial sequence of the mitochondrial DNA control region has been performed on two Mediterranean specimens for the first time.
Petetta A +6 more
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Journal of Ichthyology, 2013
Systematics of adult lampreys based on the “paired species” concept divides anadromous and residential specimens mostly on the size and size-depended criteria. Larvae of the paired species are poorly distinguished, so scientists keep looking for new diagnostic features.
D. Yu. Nazarov +2 more
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Systematics of adult lampreys based on the “paired species” concept divides anadromous and residential specimens mostly on the size and size-depended criteria. Larvae of the paired species are poorly distinguished, so scientists keep looking for new diagnostic features.
D. Yu. Nazarov +2 more
openaire +1 more source
Canadian Journal of Zoology, 2012
We report the incidence of male intersex in adult Pacific lamprey ( Entosphenus tridentatus (Richardson, 1836)) during their pre-spawning migration in fresh water. Although “hermaphrodites” have been suggested in other adult lampreys, this is the first detailed description and discussion of this phenomenon.
Clemens, Benjamin J. +3 more
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We report the incidence of male intersex in adult Pacific lamprey ( Entosphenus tridentatus (Richardson, 1836)) during their pre-spawning migration in fresh water. Although “hermaphrodites” have been suggested in other adult lampreys, this is the first detailed description and discussion of this phenomenon.
Clemens, Benjamin J. +3 more
openaire +2 more sources
1994
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
Jensen, Christopher, Schwartz, Frank J
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(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
Jensen, Christopher, Schwartz, Frank J
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A new species of fossil lamprey (Petromyzontida: Petromyzontiformes) from Hebei, China
Historical Biology, 2023openaire +1 more source
2013
Gnathostome novelties include jaws, paired appendages, and true teeth. Dlx genes encode transcription factors indispensable for embryonic development of these novelties. Gnathostomes possess at least 6 Dlx genes organized in 3 bi-gene clusters, a physical arrangement which is proposed to affect their expression though shared enhancer elements.
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Gnathostome novelties include jaws, paired appendages, and true teeth. Dlx genes encode transcription factors indispensable for embryonic development of these novelties. Gnathostomes possess at least 6 Dlx genes organized in 3 bi-gene clusters, a physical arrangement which is proposed to affect their expression though shared enhancer elements.
openaire +2 more sources