The Biology of Lampreys, Volume 1

Abakumov abundance adult lampreys aepyptera ammocoetes anadromous animals appears Applegate areas Berg blastopore body brook lamprey cartilage Caspiomyzon chromosomes Copeia cusps danfordi dentition differences disc teeth distribution dorsal downstream embryo Entosphenus Eudontomyzon fecundity feeding female Fish freshwater genera genus Geotria germ cells gill gonads growth hagfishes Hardisty Hardisty & Potter Ichthyomyzon infraoral japonica Lake Huron Lake Michigan Lake Superior lake trout lamottenii Lampetra fluviatilis Lampetra planeri lamprey Lampetra landlocked sea lamprey Lanzing larval lateral circumorals length Lethenteron Lond M. W. & Potter macrophthalmia males metamorphosis migration Mordacia Mordacia mordax mordax neural nonparasitic lampreys nonparasitic species numbers observed occur Okkelbergia oocytes paired species parasitic lampreys parasitic species period Petromyzon marinus Petromyzonidae phase populations posterior praecox region reissneri river lamprey sea lamprey sex ratios sexually mature Southern Hemisphere spawning run stage Sterba Strahan streams supraoral temperature Tetrapleurodon tissue tributaries upstream vertebrates vitellogenesis Vladykov Zanandrea Zool