Alternative Reproductive Behaviors in Lampreys and Their Signifcance

Autor:	Richard J. Wagner, Devin D. Bloom, Philip A. Cochran
Rok vydání:	2008
Předmět:	biology Ecology Lamprey Aquatic Science biology.organism_classification River drainage medicine.anatomical_structure Nest Lampetra medicine Gamete Mating human activities Ecology Evolution Behavior and Systematics
Zdroj:	Journal of Freshwater Ecology. 23:437-444
ISSN:	2156-6941 0270-5060
Popis:	A typical lamprey mating involves a female attaching to a stone near the upstream end of the nest A male then attaches to the back of the female's head and wraps his body around hers. Both vibrate vigorously as gametes are released. In some cases, a second male, the satellite, circles about the urogenital area of a mating pair at the moment of gamete release in what has been interpreted as an attempt to gain fertilizations. Analysis of videotapes of spawning Lampetra appendix in the North Branch Whitewater River in Minnesota (Mississippi River drainage) and Jambo Creek in eastern Wisconsin (Great Lakes drainage) revealed that at both sites at least 50% of matings in nests with at least three lampreys included a satellite male. Nest associations involving more that one lamprey species in the same nest are known to involve many combinations of species, but especially relevant are cases involving closely related parasitic and nonparasitic species. For example, we have observed nonparasitic Ichthyomy...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::528c7cb9fdc57e2751c15a59d6678f52 https://doi.org/10.1080/02705060.2008.9664221 Zobrazit plný text záznamu