We observed in the laboratory the behavior of six individuals of an as yet undescribed species of Speleonectes (Remipedia) over a period of 76 days. The live specimens were collected from an anchialine cave on the Yucatan Peninsula and maintained in separate aquaria at the Zoological Museum Amsterdam. In addition, field observations were conducted in the same cave to compare the laboratory results with naturally occurring behaviors. We found a variety of complex behavioral traits that include several new and unexpected findings. For example, our observations suggest that remipedes are not obligatory, but rather facultative carnivores, and that filtering particles might be the predominant mode of feeding. A digital video with examples of various behavioral traits can be downloaded at http://www.tiho-hannover.de/einricht/botanik/research.htm.
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Vol. 27 • No. 4