THE DEVELOPMENTAL STAGES OF EURYTEMORA AFFINIS (POPPE, 1880) (COPEPODA, CALANOIDA) RAISED IN LABORATORY CULTURES, INCLUDING A COMPARISON WITH THE LARVAE OF EURYTEMORA AMERI CANA WILLIAMS, 1906, AND EURYTEMORA HERDMANI THOMPSON & SCOTT, 1897 BY S. K. KATONA Biological Laboratories, Harvard University Cambridge, Massachusetts, 02138, U.S.A. INTRODUCTION Euryteiiiora dffinis (Poppe, 1880) is a widely distributed planktonic copepod which forms an important link in the food webs of many estuaries and brackish water regions in North America and Europe. This paper describes the complete life history of that species and also compares the developmental stages of E. affinis with those of two related species, E. americana Williams, 1906, and E. herdmani Thompson & Scott, 1897, described by Grice (1971). Finally, the ecological relations between these species in nature are discussed. The morphological descriptions and comparisons discussed below are based on animals raised in the laboratory under controlled conditions. This procedure insures an adequate supply of good quality specimens and also minimizes the possibility of confusing the larvae of two closely related species which might be taken together in a plankton net haul. This investigation includes a re-examination of earlier work by Davis (1943) on the larval stages of Errryterjrora hirtlndoides
Crustaceana – Brill
Published: Jan 1, 1971
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