Oithona Davisae, New Species, and Limnoithona Sinensis (Burckhardt, 1912) (Copepoda: Oithonidae) From the Sacramento-san Joaquin Estuary, California

Publisher Website
Google Scholar
Abstract
Zooplankton samples from the Sacramento-San Joaquin Estuary were examined for cyclopoid copepods of the family Oithonidae. Of the 3 spp. found, L. sinensis, O. davisae sp. nov. and O. similis, the first 2 are described here. L. sinensis, like its congener L. tetraspina, has been previously reported from delta localities in the Yangtze River, China. In general morphology O. davisae is similar to many estuarine/lagoonal oithonids of temperate and tropical American coastal waters. Two characters, an elongate ventrally pointed rostrum and/or a long distal spine on the inner lobe of the 1st maxilla, suggest affinities to the Indo-West Pacific estuarine species O. brevicornis, O. aruensis and O. wellershausi. In the northern hemisphere O. similis is a common subarctic oceanic species. Specimens have also been reported from estuarine areas. Zooplankton samples taken in coastal estuarine localities from Humboldt Bay south to Baja California were examined to determine the distribution of these 3 spp. O. similis was the only species found.

This publication has 1 reference indexed in Scilit: