Effects of Barnacle Encrustation on the Swimming Behaviour, Energetics, Morphometry, and Drag Coefficient of the Scallop Chlamys Hastata

Authors

Deborah A. Donovan, Western Washington UniversityFollow
Brian L. Bingham
Milton From
Abby F. Fleisch
Eli S. Loomis

Document Type

Article

Publication Date

8-2003

Abstract

Barnacle encrustation negatively influenced every aspect of swimming in the scallop Chlamys hastata measured in this study. Scallops swam significantly longer, travelled further and attained greater elevation once epibiotic barnacles had been removed. Shell morphometry of barnacle-encrusted scallops was similar to shells of unencrusted scallops. Specifically, shell length was positively allometric with shell height and shell mass was negatively allometric. However, adductor muscle mass scaled isometrically to shell height, in contrast to unencrusted scallops. In the laboratory, the drag coefficient (C_d) of barnacle-encrusted scallops decreased after barnacle removal, in contrast to sponge-encrusted scallops in which no decrease in C_d was detected when the sponge was removed from the scallop's valves. Furthermore, scallops swimming with barnacle encrustation required more energy than did unencrusted scallops. Although there was no significant difference in aerobic energy expenditure between swimming barnacle-encrusted and unencrusted scallops, differences in anaerobic energy expenditure were detected. Specifically, barnacle-encrusted scallops required more arginine phosphate than unencrusted scallops to swim to exhaustion although octopine levels were similar. Thus, barnacle encrustation dramatically decreased a scallop's ability to swim, partly by increasing the drag coefficient experienced by the scallop and the energy required for swimming.

Publication Title

Journal of the Marine Biological Association of the United Kingdom

Volume

83

Issue

4

First Page

813

Last Page

819

Required Publisher's Statement

© 2003, Cambridge University Press. View original article at Journal of the Marine Biological Association of the United Kingdom.

Recommended Citation

Donovan, Deborah A.; Bingham, Brian L.; From, Milton; Fleisch, Abby F.; and Loomis, Eli S., "Effects of Barnacle Encrustation on the Swimming Behaviour, Energetics, Morphometry, and Drag Coefficient of the Scallop Chlamys Hastata" (2003). Biology Faculty and Staff Publications. 9.
https://cedar.wwu.edu/biology_facpubs/9

Subjects - Topical (LCSH)

Chlamys--Parasites; Scallops--Parasites; Barnacles; Host-parasite relationships

Genre/Form

articles

Type

Text

Language

English

Format

application/pdf