Abstract
ABSTRACT Coquina clams (Donax variabilis) were sampled monthly at 2 sites in Pinellas County, Florida, to document recruitment and growth. Samples collected from the swash zone were counted, measured, and preserved. Histological staging of a subset of the preserved gonads was performed to assess patterns in reproduction. Peak spawning and recruitment were observed in early spring, and growth rates were calculated through the fall. Spawning and low densities of recruits persisted throughout the summer and fall. The presence of spawning D. variabilis during 21 of 23 mo indicates a continuous reproductive cycle. Multivariate analysis of length—frequency data and frequency of reproductive stages indicates a cycle of approximately 8 mo, suggesting a typical life span of less than 1 y, although some individuals survive longer.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
