Marine Biology: An Ecological Approach |
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Page 238
... clams such as Tivela stultorum , the Pismo clam ( Fig . 6-26 ) . Such animals are usually also aided by developing a very heavy shell , which helps in keeping the animal down in the substrate . The only difficulty with this type of ...
... clams such as Tivela stultorum , the Pismo clam ( Fig . 6-26 ) . Such animals are usually also aided by developing a very heavy shell , which helps in keeping the animal down in the substrate . The only difficulty with this type of ...
Page 362
... clams . Six of the species are in the genus Tridacna itself and the remaining one in the genus Hippopus . All tridacnid clams are distributed only in the Old World tropics of the Indo - Pacific . They also include the largest bivalve ...
... clams . Six of the species are in the genus Tridacna itself and the remaining one in the genus Hippopus . All tridacnid clams are distributed only in the Old World tropics of the Indo - Pacific . They also include the largest bivalve ...
Page 365
... clams can discern between healthy zooxanthellae cells and those that are degenerating or senile . As a result , the clam transports only the senile or degenerating cells from the outer mantle blood spaces , where they photosynthesize ...
... clams can discern between healthy zooxanthellae cells and those that are degenerating or senile . As a result , the clam transports only the senile or degenerating cells from the outer mantle blood spaces , where they photosynthesize ...
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abundant adaptations algae algal amount amphipods anemones areas Atlantic bacteria barnacles benthic biology body bottom burrow carnivores changes Cnidaria communities competition copepods coral reef crabs crustaceans deep sea density deposit feeders depth desiccation detritus diatoms dinoflagellates dominant ecology ecosystems eggs epipelagic estuary fauna feeding Figure fishes fresh water grazing hence herbivores increased invertebrates kelp kelp beds large numbers larvae layers levels light living low tide major marine mammals marsh mesopelagic migrate mollusks Mytilus nekton number of species numbers nutrients occur ocean oxygen Pacific coast particles patterns pelagic percent Photo courtesy photophores photosynthesis physical factors phytoplankton plankton plants Plate polychaete population predators primary productivity reduced result rocky shores salinity salt sand beaches sea grass sea urchins sea water sediment shallow water squids substrate surface waters suspension feeders temperate temperature terrestrial thermocline tropical tuna upper various vertical water column water mass wave action whales zonation zone zooplankton zooxanthellae