Relative trophic position of Cancer magister megalopae

Relative trophic position of Cancer magister megalopae

T.C. Kline Jr.

Relative trophic position of Cancer magister megalopaeThis is part of Crabs in Cold Water Regions: Biology, Management, and Economics
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Description

Stable nitrogen isotope ratios were used to compare the relative trophic level of megalopa stage larvae of the brachyuran crab Cancer magister with select copepod and euphausiid species in the northern Gulf of Alaska. Cancer magister megalopae have a trophic level of 2.5, which indicates they are omnivores. Their trophic level is intermediate between the levels for herbivores, such as the reference species Neocalanus cristatus at trophic level of 2.0, and the carnivorous copepod Euchaeta elongata with a trophic level of 3.0.

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