. The Eastern Bering Sea Shelf : oceanography and resources / edited by Donald W. Hood and John A. Calder . SMALL BENTHIC INVERTEBRATES ANIMAL REMAINS DEPOSITED ORGANICS DETRITUS BACTERIA BENTHIC DIATOMS MEIOFAUNA SUSPENDED ORGANICS PHYTOPLANKTON ZOOPLANKTON Figure 69-3. A food web showing carbon flow to snow crab (Chionoecetes spp.) in the eastern Bering Sea. Bold lines indicate major food sources. Macoma spp.), cockles (Clinocardium spp.), and acorn barnacles (mainly Balanus crenatus). Analysis of king crab feeding data from the area of Kodiak and Afognak islands revealed significant differe
. The Eastern Bering Sea Shelf : oceanography and resources / edited by Donald W. Hood and John A. Calder . SMALL BENTHIC INVERTEBRATES ANIMAL REMAINS DEPOSITED ORGANICS DETRITUS BACTERIA BENTHIC DIATOMS MEIOFAUNA SUSPENDED ORGANICS PHYTOPLANKTON ZOOPLANKTON Figure 69-3. A food web showing carbon flow to snow crab (Chionoecetes spp.) in the eastern Bering Sea. Bold lines indicate major food sources. Macoma spp.), cockles (Clinocardium spp.), and acorn barnacles (mainly Balanus crenatus). Analysis of king crab feeding data from the area of Kodiak and Afognak islands revealed significant differences in quantity of food consumed between sampling areas, periods, depths, and crab sizes and classes. The diet of red king crab from lower Cook Inlet also reflected regional differences. Crab from Kami- shak Bay ate mostly barnacles, crab from Kachemak Bay mostly clams, specifically Spisula polynyma (Feder et al. 1980b). Post-larval red king crab from Cook Inlet ingested detrital materials, diatoms, Bryozoa, harpacticoid copepods, ostracods; all contained considerable sediment (Feder et al. 1980b). SCUBA observations have been made near Kodiak Island of king crab preying on the sea stars Pycno- podia helianthoides and Euasterias troschelii (Feder and Jewett 1981, Powell 1979). Remains of sea stars in crab stomachs are reported by Feder and Jewett (1981). It appears that predation on these echinoderms is important, especially when crab are foraging in shallow waters in late spring and summer (Feder and Jewett 1981). The food of the red king crab is similar throughout its range: polychaetes, mollusks, crustaceans, and echinoderms are important food resources. King crab in the Bering Sea must often compete for food with other bottom-feeding organisms, , snow crabs, sea stars. Pacific cod, yellowfin sole, Alaska plaice, rock sole, flathead sole, and rex sole (Feder and Jewett 1980, Takeuchi 1959). Various king crab predators have been identified in the Kodiak area. Powell and
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