86: 145-151, ECOLOGY PROGRESS SERIES Ecol. Prog. Ser. a symbiont-conta - PDF document

86: 145-151, ECOLOGY PROGRESS SERIES Ecol. Prog. Ser. a symbiont-containing University. Department Organismic and Evolutionary multiple comparisons test on the 2 foods depleted at particles within all 3 place during plankton into consistent with patterns, but Solemya velum Isochrysis galbana h-' (Tukey ple comparisons S. velum rate recorded radiolabeled carbon incubated in Labeled carbon detected in initial filtrate Isochrysis galbana being incubated in calculated on the measured incorporation (Fig. values (2-way determine whether feeding studies little activity leak large amounts carbon, as has been (1986). Furthermore, the detected in significantly different Mya arenaria. as controls. 3b). The differed significantly from the other multiple comparisons test, p clams fed represents true particle ingestion than uptake Krueger et Synechococcus sp. when trate. Apparent rates were calculated controls. Values shown protobranch bivalve which harbors bacteria in its gills, also possesses a functional digestive a series experiments designed on the its nutrition. Dunaliella tertiolecta in coastal Atlantic benthic suspension feeders such Mya arenana 1981, this study), but same algae were the cyanobacteria however, aver- rate observed We conclude a small ingestion occurs probable source sp.) versus larger (i.e. unclear. A on the a symbiont-containing this bivalve also sized particles a disproportionately higher rate mussel maintains small particles the deep- is rich in free-living al. 1990). However, occurs in productive coastal algal species are abundant these types was measured. to its typical gill cilia other suspension seems that qualitative differences affect ingestion rates in Given that direct respiration carbon requirement another protobranch lives in but that lacks a 0.025 g h-', based on the a 0.026 given that tains 0.29 assimilation efficiency a typical invertebrates feeding on iela 1984, al. 1990, would assimilate be met sp. at further support Ecol. Prog. its symbiotic symbiont-produced organic for its 1989, 1992). is in heavily on shown that a combined from its endosymbiotic zooxanthellae both in al. 1992). Similarly, corals on plankton their symbionts Furthermore, in hosts which chemoautotrophic symbionts and have the suspension feeding supplements their internal nutritional source. trophic symbionts, additional source both carbon (Page et al. 1990). bivalve-chemoautotroph symbioses provide certain synthesized by higher plants; date are synthesis (Goldfine PUFAs for these compounds, the invertebrates pletely lack and gut in Fisher ingestion found species does rely on feeding, thereby further support hypothesis that intracellular bacteria function trophically in this symbiosis. Some ingestion particles occurs in a probable essential nutrients suspension feeding symbiotic con- ingestion rates symbioses, given that completely lack a mouth and gut, likely reflect Davis for their help plankton cultures, equipment use, and many insightful discus- Leslie is technical assist- This work was supported Grant OCE (1988). Invertebrate College Publishing, (1981). Prokaryotic cells in hydrothermal vent chemoautotrophic symbionts. Science marine invertebrates marine invertebrates. site description Solemya borealis symbiosis. Mar. endosymbiotic bacteria in host Limnol. thermal vent marine invertebrates. (1986). Translocation symbiotic bacteria to host tissues in the gut- Solemya reidi. capture, ingestion, bivalve mollusc. in press Comparative aspects marine invertebrates. (eds.) Culture marine invertebrate animals. giant clam Tridacna water deposit-feed- communities: Quisset Harbor, Massachusetts. Carolina Press, Columbia, p. Lewis, H. suspension feeding M., Fisher, symbionts. Mar different microbes diets consisting or two algal species juvenile oysters, (Gmelin). Aquaculture form to Biochemical composition short-term nutrient incorporation patterns in 7803). Limnol. ecological characterization unicellular cyanobacteriurn Synechococcus. In: Bull. Fish. 214 71-120 Revised version