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Abstract
Juveniles of the ammotheid pycnogonid ? Ammothella spinifera were found apparently as ectoparasites on the sabellid polychaete Sabella melanostigma from Bahía Concepción, Gulf of California. Nineteen out of 23 sabellids were parasitized (83% incidence) by one to five (x̄ = 1.5) juveniles that prefered the abdomen over the thorax (25 vs. 9). Four adult A. spinifera were found in less close association with sabellids, as well as 12 other annelids without ectoparasites.
References
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Copyright (c) 1987 Revista de Biología Tropical