Abstract
SUMMARYBy comparing the two species ofAmphiurain controlled, directional bottom current flows, clear differences of behaviour can be demonstrated. These differences have been shown to be associated with two quite distinct feeding methods.Amphiura filiformisholds the arms up into the current flow with a rheotactic response to current direction and feeds by trapping both non-living particulate suspended matter and phytoplankton.Amphiura chiajeidoes not show this response and feeds exclusively on deposited matter on the sediment surface. Both species have modifications of the podia associated with the different methods of feeding. Estimates of growth rate, longevity and oxygen uptake suggest thatAmphiura filiformisis a rapidly growing species with a high metabolic rate and food requirement, whereasAmphiura chiajeiis slow growing and long-lived with a low metabolic rate. The environmental requirements of the two species are discussed.
Publisher
Cambridge University Press (CUP)
Reference13 articles.
1. The Food of the Bottom Fauna of the Plymouth Fishing Grounds
2. PARALLEL LEVEL-BOTTOM COMMUNITIES, THEIR TEMPERATURE ADAPTATION, AND THEIR "BALANCE" BETWEEN PREDATORS AND FOOD ANIMALS
3. Valuation of the sea, II. The animal communities of the sea bottom and their importance for marine zoogeography;Petersen;Rep. Danish biol. Sta.,1913
4. Food and conditions of nourishment among the communities of invertebrate animals found on or in the sea bottom in Danish water;Blegvad;Rep. Danish biol. Sta.,1914
5. Chapter 17: Bottom Communities (Sublittoral or Shallow Shelf)
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