Pheromones of the male sea lamprey, Petromyzon marinus L.: structural studies on a new compound, 3-keto allocholic acid, and 3-keto petromyzonol sulfate

Steroids ◽  
2003 ◽  
Vol 68 (3) ◽  
pp. 297-304 ◽  
Author(s):  
Sang-Seon Yun ◽  
Alexander P. Scott ◽  
Weiming Li
Keyword(s):  
Petromyzon Marinus ◽  
Sea Lamprey ◽  
Structural Studies ◽  
Petromyzonol Sulfate

Laboratory assessment of the role of a larval pheromone and natural stream odor in spawning stream localization by migratory sea lamprey (Petromyzon marinus)

2001 ◽  
Vol 58 (12) ◽  
pp. 2374-2385 ◽  
Author(s):  
Lance A Vrieze ◽  
Peter W Sorensen
Keyword(s):  
Olfactory System ◽  
Stream Water ◽  
Petromyzon Marinus ◽  
Sea Lamprey ◽  
Laboratory Assessment ◽  
Natural Stream ◽  
Petromyzonol Sulfate ◽  
Larval Pheromone ◽  
Stream Waters

This study used large laboratory mazes and natural stream waters to test the role of olfactory cues, including a pheromone released by larvae, in spawning stream localization by migratory sea lamprey (Petromyzon marinus). We found that migratory lamprey strongly prefer stream water over lake water and that this response is dependent upon a functional olfactory system. Responses persisted among migratory lamprey even after stream water was diluted a thousand times but were not seen among non-migratory lamprey. Experiments using waters from five streams demonstrated that a larval pheromone is a key determinant of stream attractiveness: water from streams with larval populations were consistently more attractive than those without, and adding larval odor to the latter reversed this relationship. Larval odor was attractive at low, realistic concentrations, especially when presented together with natural stream water, suggesting that streams contain other odors that synergize the actions of the pheromone. Some, but not all, of the activity of the larval pheromone could be explained by two bile acids released by larvae (petromyzonol sulfate and allocholic acid). Together, these results strongly suggest that migratory lamprey locate streams using a larval pheromone. This cue could be useful in lamprey control.

scholarly journals A pheromone outweighs temperature in influencing migration of sea lamprey

2015 ◽  
Vol 2 (5) ◽  
pp. 150009 ◽  
Author(s):  
Cory O. Brant ◽  
Ke Li ◽  
Nicholas S. Johnson ◽  
Weiming Li
Keyword(s):  
Large Scale ◽  
Petromyzon Marinus ◽  
Sea Lamprey ◽  
Mature Male ◽  
Reliable Information ◽  
Conflicting Information ◽  
Petromyzonol Sulfate ◽  
Sea Lampreys ◽  
Cold Stream ◽  
Conspecific Cues

Organisms continuously acquire and process information from surrounding cues. While some cues complement one another in delivering more reliable information, others may provide conflicting information. How organisms extract and use reliable information from a multitude of cues is largely unknown. We examined movement decisions of sea lampreys ( Petromyzon marinus L.) exposed to a conspecific and an environmental cue during pre-spawning migration. Specifically, we predicted that the mature male-released sex pheromone 3-keto petromyzonol sulfate (3kPZS) will outweigh the locomotor inhibiting effects of cold stream temperature (less than 15°C). Using large-scale stream bioassays, we found that 3kPZS elicits an increase (more than 40%) in upstream movement of pre-spawning lampreys when the water temperatures were below 15°C. Both warming temperatures and conspecific cues increase upstream movement when the water temperature rose above 15°C. These patterns define an interaction between abiotic and conspecific cues in modulating animal decision-making, providing an example of the hierarchy of contradictory information.

Classification of Sea Lamprey (Petromyzon marinus) Attack Marks on Great Lakes Lake Trout (Salvelinus namaycush)

1980 ◽  
Vol 37 (11) ◽  
pp. 1989-2006 ◽  
Author(s):  
Everett Louis King Jr.
Keyword(s):  
Great Lakes ◽  
Lake Trout ◽  
Petromyzon Marinus ◽  
Attachment Site ◽  
Sea Lamprey ◽  
Salvelinus Namaycush ◽  
Oral Disc ◽  
Field Assessment ◽  
Sea Lampreys

Criteria for the classification of marks inflicted by sea lamprey (Petromyzon marinus) into nine categories were developed from laboratory studies in an attempt to refine the classification system used in field assessment work. These criteria were based on characteristics of the attachment site that could be identified under field conditions by unaided visual means and by touching the attachment site. Healing of these marks was somewhat variable and was influenced by the size of lamprey, duration of attachment, severity of the wound at lamprey detachment, season and water temperature, and by other less obvious factors. Even under laboratory conditions staging of some wounds was difficult, especially at low water temperatures. If these criteria are to be used effectively and with precision in the field, close examination of individual fish may be required. If the feeding and density of specific year-classes of sea lampreys are to be accurately assessed on an annual basis, close attention to the wound size (as it reflects the size of the lamprey's oral disc) and character of wounds on fish will be required as well as consideration of the season of the year in which they are observed.Key words: sea lamprey, attack marks, lake trout, Great Lakes

Evidence that 3-keto petromyzonol sulphate specifically attracts ovulating female sea lamprey, Petromyzon marinus

2005 ◽  
Vol 70 (5) ◽  
pp. 1037-1045 ◽  
Author(s):  
Michael J. Siefkes ◽  
Scott R. Winterstein ◽  
Weiming Li
Keyword(s):  
Petromyzon Marinus ◽  
Sea Lamprey

Mercury accumulation in sea lamprey (Petromyzon marinus) from Lake Huron

2014 ◽  
Vol 470-471 ◽  
pp. 1313-1319 ◽  
Author(s):  
Charles P. Madenjian ◽  
Nicholas S. Johnson ◽  
Michael J. Siefkes ◽  
John M. Dettmers ◽  
Joel D. Blum ◽  
...  
Keyword(s):  
Petromyzon Marinus ◽  
Sea Lamprey ◽  
Lake Huron ◽  
Mercury Accumulation
Sign in / Sign up

Export Citation Format

Share Document