Epidermal pigmentation in the sea lamprey Petromyzon marinus L.

1973 ◽  
Vol 51 (1) ◽  
pp. 101-104 ◽  
Author(s):  
Edward Kott
Keyword(s):  
Petromyzon Marinus ◽  
Sea Lamprey ◽  
Spawning Migration ◽  
Breakdown Product ◽  
Bile Pigment ◽  
Mucus Layer ◽  
Color Development

During the spawning migration, the overall color of the sea lamprey (Petromyzon marinus L.) becomes progressively more orange. This color development is not due to the chromatophores of the dermis, since the pigment involved is present in either the epidermis and (or) the outer mucus layer. The color, instead, is resultant upon an increase in the concentration of bilirubin, a bile pigment produced as a breakdown product of hemoglobin.

Sea lamprey (Petromyzon marinus L.) spawning migration in the Vouga river basin (Portugal): poaching impact, preferential resting sites and spawning grounds

Hydrobiologia ◽  
2007 ◽  
Vol 582 (1) ◽  
pp. 121-132 ◽  
Author(s):  
N. O. Andrade ◽  
B. R. Quintella ◽  
J. Ferreira ◽  
S. Pinela ◽  
I. Póvoa ◽  
...  
Keyword(s):  
River Basin ◽  
Petromyzon Marinus ◽  
Sea Lamprey ◽  
Spawning Migration ◽  
Spawning Grounds ◽  
Resting Sites

Metabolic organization of liver and somatic muscle of landlocked sea lamprey,Petromyzon marinus, during the spawning migration

1995 ◽  
Vol 73 (5) ◽  
pp. 916-923 ◽  
Author(s):  
P. J. LeBlanc ◽  
T. E. Gillis ◽  
M. F. Gerrits ◽  
J. S. Ballantyne
Keyword(s):  
Amino Acids ◽  
Ketone Bodies ◽  
Petromyzon Marinus ◽  
Plasma Concentrations ◽  
High Capacity ◽  
Sea Lamprey ◽  
Spawning Migration ◽  
Somatic Muscle ◽  
Nonesterified Fatty Acids ◽  
Metabolic Organization

The metabolic organization of liver and muscle of the landlocked sea lamprey, Petromyzon marinus, during the spring spawning migration was assessed by measuring activities of key enzymes for several metabolic pathways, the oxidative properties of mitochondria, and plasma concentrations of nonesterified fatty acids (NEFAs) and free amino acids. These determinations indicate that several metabolic sources are used to fuel the energy requirements of muscle. Lamprey muscle has a high capacity to oxidize lipids but the plasma NEFAs are lower than those reported for other species. Of the NEFAs measured in plasma, 18:0 was prominent, accounting for 23% of the total NEFA content of the plasma. High plasma concentrations of ketogenic amino acids and high levels of tissue ketogenic/ketolytic enzyme activities indicate that ketone bodies may also be a major fuel source for migrating sea lampreys. Based on mitochondrial oxidation and enzyme measurements, glutamine catabolism in somatic muscle of lampreys is less important than in other fish red muscle.

scholarly journals Demography of sea lamprey (Petromyzon marinus) ammocoete populations in relation to potential spawning-migration obstructions

2017 ◽  
Vol 27 (4) ◽  
pp. 764-772 ◽  
Author(s):  
A. D. Nunn ◽  
R. J. Taylor ◽  
I. G. Cowx ◽  
R. A. A. Noble ◽  
J. D. Bolland ◽  
...  
Keyword(s):  
Petromyzon Marinus ◽  
Sea Lamprey ◽  
Spawning Migration

Changes in Spawning Runs of Sea Lamprey (Petromyzon marinus) in Selected Streams of Lake Superior after Chemical Control

1980 ◽  
Vol 37 (11) ◽  
pp. 1851-1860 ◽  
Author(s):  
H. H. Moore ◽  
L. P. Schleen
Keyword(s):  
Great Lakes ◽  
Chemical Treatment ◽  
Chemical Control ◽  
Lake Superior ◽  
Petromyzon Marinus ◽  
Sea Lamprey ◽  
Spawning Migration ◽  
Habitat Alteration ◽  
Sea Lampreys ◽  
Spawning Run

During lampricide treatment of a stream, sea lamprey, Petromyzon marinus, that will constitute the spawning run the following spring inhabit the Great Lakes and are not affected by the treatment. However, the number of adults captured at electrical barriers declined as much as 99% in some streams 1 year after chemical treatment. Large declines of adults were noted in streams which were treated late in the year. Streams in which significant populations of larval lampreys survived the chemical treatment, or contained lentic populations, continued to attract adults. Adult sea lampreys could be attracted to sea lamprey ammocoetes in streams or in offshore areas and hence use this as one of a number of clues to determine rivers suitable for spawning.Key words: sea lamprey, olfaction, orientation/homing, spawning migration, habitat alteration (chemical), Petromyzon marinus, lampricides

Pheromone Communication in Sea Lampreys (Petromyzon marinus): Implications for Population Management

1980 ◽  
Vol 37 (11) ◽  
pp. 2123-2132 ◽  
Author(s):  
John Teeter
Keyword(s):  
Insect Pest ◽  
Petromyzon Marinus ◽  
Sea Lamprey ◽  
Population Management ◽  
Spawning Migration ◽  
Mass Trapping ◽  
Pheromone Communication ◽  
Physiological Factors ◽  
Sea Lampreys ◽  
Opposite Sex

The results of recent preference tests indicate that both male and female landlocked sea lampreys (Petromyzon marinus), after reaching a specific stage of sexual maturation, release pheromones which attract conspecifics of the opposite sex. In addition, sexually immature males, captured at the beginning of a spawning migration, exhibit a preference for water in which sea lamprey larvae have been held, suggesting that chemical signals, originating from populations of sea lamprey larvae in a river, may aid migrating adults in selecting a suitable spawning stream. The possible influence of a number of environmental and physiological factors on pheromone communication in sea lampreys is discussed. Synthetic pheromones have been utilized in insect pest management programs as lures for mass-trapping one or both sexes and for disrupting normal pheromone communication. Similar strategies may be applicable in an integrated program of sea lamprey population management.Key words: pheromones, reproduction, spawning migration, sea lampreys, population management, preference behavior

Nutritional status of adult sea lamprey (Petromyzon marinus Linnaeus, 1758) during spawning migration in the Minho River, NW Iberian Peninsula

2013 ◽  
Vol 29 (4) ◽  
pp. 808-814 ◽  
Author(s):  
M. J. Araújo ◽  
R. O. A. Ozório ◽  
R. J. B. Bessa ◽  
A. Kijjoa ◽  
J. F. M. Gonçalves ◽  
...  
Keyword(s):  
Nutritional Status ◽  
Iberian Peninsula ◽  
Petromyzon Marinus ◽  
Sea Lamprey ◽  
Spawning Migration ◽  
Minho River
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