Webclams. The ctenidia (gills) of giant clams are known to take part in the uptake and assimilation of ammonia from the external medium (Rees et al. 1994; Shepherd et al. 1999). They display high activity of glutamine synthetase (GS), which participates in ammonia assimilation by catalyzing the ligation of NH 4 + WebMar 26, 2024 · A Dual-Domain Carbonic Anhydrase (DDCA) had been sequenced and characterized from the ctenidia (gills) of the giant clam, Tridacna squamosa, which lives in symbiosis with zooxanthellae.DDCA was expressed predominantly in the ctenidium.In T. squamosa, the DDCA was localized apically in certain epithelial cells near the base of …
Molecular Characterization of a Dual Domain Carbonic Anhydrase …
WebAnatomy of a clam, showing the major internal organs. Bivalves lack a head, radula, and jaws. Although the plesiomorphic feeding state for bivalves is probably deposit feeding utilizing long labial palps, the … WebChapter contents: 1.Brachiopoda –– 1.1 Brachiopod Classification –– 1.2 Brachiopods vs. Bivalves← –– 1.3 Brachiopod Paleoecology –– 1.4 Brachiopod Preservation Above image: Left, Brachiopod Paraspirifer brownockeri on exhibit in the Houston Museum of Natural Science, Houston, Texas.Image by "Daderot" (Wikimedia Commons; Creative Commons … rainbird impact heads
Carbonic anhydrase 2‐like in the giant clam, Tridacna squamosa ...
WebRespiration is facilitated by ctenidia (gills) that are present ventrally. These animals possess a radula that is modified for scraping. ... Class Bivalvia (“two shells”) includes clams, oysters, mussels, scallops, and geoducks. … WebFeb 2, 2010 · The mollusks are among the most diverse, and well-known of the invertebrate groups and include the clams, snails, tusk shells, chitons, and squids (Figures A-G). Nielsen (2001) ... They do not have ctenidia, but sometimes do have secondary gills. There are no specialized excretory organs. Some of the aplacophorans do not have a radula. WebGiant clams harbor three genera of symbiotic dinoflagellates (Symbiodinium, Cladocopium, and Durusdinium) as extracellular symbionts (zooxanthellae). While symbiotic dinoflagellates can synthesize amino acids to benefit the host, they are nitrogen-deficient. Hence, the host must supply them with nitrogen including urea, which can be degraded to ... rainbird impact head replacement parts