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Notes On The Northern Gulf Of Mexico Occurrence Of Sagitta Friderici Ritter-Zahony (Chaetognatha), Jerry A. Mclelland
Notes On The Northern Gulf Of Mexico Occurrence Of Sagitta Friderici Ritter-Zahony (Chaetognatha), Jerry A. Mclelland
Gulf and Caribbean Research
The neritic chaetognath Sagitta friderici Ritter-Zahony, 1911 was identified in plankton samples from the northern Gulf of Mexico in June 1974. Specimens analyzed from two groups of adults ranged from 6 to 13.7 mm long. Meristic values did not appear to be a function of body length except for individuals in the 12.4 to 13.7 mm range that had larger numbers of hooks and teeth.
Adults of Sagitta friderici and the closely related S. tenuis Conant, 1896 were compared and found to be distinguishable chiefly by (1) the number of ova per unit length of the ovary, and (2) the …