The effects of herring bait on the diet of lobsters in coastal Maine.

<p>Nitrogen stable isotope ratios [SIR's] for sublegal (66–83 CL) lobsters in the summer and fall from closed and open sites in mid-coast Maine (n = 10; error bars = +1 SE). ANOVA revealed a significant interaction between site and season. Nitrogen SIR's of Monhegan lobsters were significantly lower in October than in June, but did not differ at the baited (GI) site. Higher δ¹⁵N values for lobsters indicate greater proportions of higher trophic levels such as herring in their diet.