2026-09-23T21:57:06Zhttps://api.drum.lib.umd.edu/server/oai/requestoai:drum.lib.umd.edu:1903/100142016-03-29T05:23:04Zcom_1903_11810com_1903_12com_1903_19654com_1903_2col_1903_2749col_1903_19655col_1903_3
Meritt, Donald W.
Grant, Melissa
Digital Repository at the University of Maryland
University of Maryland (College Park, Md.)
Marine-Estuarine-Environmental Sciences
2010-02-19T07:11:35Z
2010-02-19T07:11:35Z
2009
http://hdl.handle.net/1903/10014
Although numerous studies have been conducted to examine the effects of neuroactive compounds on bivalve larvae, few have identified chemicals capable of inducing settlement behavior in the eastern oyster <italic>Crassostrea virginica</italic>. In this study, I treated competent <italic>C. virginica</italic> larvae with select chemicals to identify those which are capable of inducing settlement behavior at an average salinity of 9.6 (±0.1). The compounds γ-aminobutyric acid and acetylcholine chloride, both at 10<super>-4</super>M, did not significantly increase the percentage of larvae exhibiting settlement behavior. As compared with the control, a significant increase in settlement behavior was induced by treatment with 3-isobutyl-1-methylxanthine, 5-hydroxytryptamine, and L-3, 4-dihydroxyphenylalanine all at 10<super>-4</super>M, as well as ammonia as a solution of 7.9mM NH<sub>4</sub>Cl (pH=8.0). These findings differ somewhat from the results of similar studies involving other species in the <italic>Crassostrea</italic> genus and may be of value to hatchery personnel or researchers interested in the chemical induction of settlement behavior in the eastern oyster.
CHEMICAL INDUCTION OF SETTLEMENT IN LARVAE OF THE EASTERN OYSTER <italic>CRASSOSTREA VIRGINICA </italic> (GMELIN)
Thesis
Agriculture, Fisheries and Aquaculture
Chemistry, Biochemistry
Neurobiology
bivalve
chemical
induction
larvae
oysters
settlement
open.access