Life cycle of the sea lamprey Petromyzon marinus: duration of and growth in the marine life stage

Aquatic Biology

Rufino Vieira-Lanero¹  Sandra Barca¹  Sergio Silva¹  María J. Servia¹  Fernando Cobo¹ 

关键词: Growth;    Adult;    Feeding;    Anadromous;    Hematophagous;    Estuary;   

DOI  :  10.3354/ab00488

学科分类：生物科学（综合）

来源: Inter-Research

【 摘 要 】

ABSTRACT: Little is known about the marine life-history phase of the anadromous sea lamprey Petromyzon marinus. The most widely accepted hypothesis suggests a hematophagous feeding phase of 2.5 yr. We captured and tagged (individually numbered T-bar anchor tags) 408 postmetamorphic sea lampreys during the onset of the hematophagous feeding phase in the River Ulla and its estuary (NW Spain). One marked sea lamprey was recaptured during its spawning migration (total length: 895 mm, weight: 1218 g). This individual had been marked 13.5 mo before recapture, and had measured 218 mm and 20 g. Our results suggest that at least a portion of the sea lamprey population can reach adult size in 1 yr of hematophagous feeding. This further suggests a period between completion of metamorphosis and reproduction of 1.5 yr (18 to 20 mo).

【 授权许可】

Unknown