Neustonic Marine Craspedomonadales (Choanofiagellates) from Washington and California

作者：Richard E. Norris · 发表于：The Journal of Protozoology · 年份：1965 · DOI：10.1111/j.1550-7408.1965.tb03260.x · 被引用次数：93 · 研究领域：Protist diversity and phylogeny、Marine Toxins and Detection Methods、Microbial Community Ecology and Physiology

SYNOPSIS. Neustonic choanoflagellates can be found in marine tide pools in the San Juan Islands, Washington, and on the Monterey Peninsula, California. Several marine photo‐synthetic Chrysophyceae (in the Pedinellaceae), which also occur in these regions, have a basic structure so similar to choanoflagellates that this family is placed in the Craspedomonadales. In pointing out this relationship, the derivation of the Craspedomonadales from pigmented Chrysophyceae is strongly indicated. In addition to the naked choanoflagellates, which are placed in the Codonosigaceae, these organisms produce loricae of two different types: 1) loricae possibly of cellulose and without visible structure in the light microscope (Salpingoecaceae), 2) loricae composed of silica strands, sometimes forming a mesh with large open spaces (Acanthoecaceae). Members of the latter family seem to be confined to a marine environment and are a prominent part of this investigation. Examination of several species with the electron microscope has revealed interesting details of lorica morphology that are not visible with the light microscope. Several new combinations of taxa are proposed in addition to new taxa, including 4 new species of Salpingoeca , 3 new species of Diploeca and 4 new species of Pleurasiga. Three new genera are described, Ellisiella gen. nov., Acanthoecopsis gen. nov., and Sportelloeca gen. nov.