JPR Advance Access originally published online on March 30, 2004
Journal of Plankton Research 2004 26(6):647-657; doi:10.1093/plankt/fbh063
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Journal of Plankton Research Vol. 26 No. 6 © Oxford University Press 2004; all rights reserved
Distribution of holoplanktonic typhloscolecids (Annelida-Polychaeta) in the eastern tropical Pacific Ocean
Laboratorio de Invertebrados, Facultad de Ciencias, Universidad Nacional Autónoma de México, A. P. 70371, México D. F., 04510, México
* Corresponding Author: mafa{at}hp.fciencias.unam.mx
The distribution and composition of the holoplanktonic species of the family Typhloscolecidae are reported from 579 samples obtained over an extensive area in the eastern tropical Pacific Ocean. The EASTROPAC Oceanographic Program collected the samples in twelve cruises during five periods made between JanuarySeptember 1967 and JanuaryApril 1968. The 2105 specimens identified belonged to three genera and four species. Typhloscolex muelleri and Sagitella kowalewski were dominant together, accounting for 5759% of the relative abundance and 3649% of the occurrence. Travisiopsis dubia is recorded for the first time from the eastern tropical Pacific, and Travisiopsis lanceolata is reported in almost the same locality as its first record in the surveyed region.