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Updated: Jul 16, 2026

VacuSIP, an Improved InEx Method for In Situ Measurement of Particulate and Dissolved Compounds Processed by Active Suspension Feeders
Published on: August 3, 2016
Freshwater shrimp-sponge association from an ancient lake
Kristina von Rintelen1, Thomas von Rintelen, Martin Meixner
1Museum of Natural History, Humboldt University, Invalidenstrasse 43, 10115 Berlin, Germany. kristina.rintelen@museum.hu-berlin.de
Abstract:
Shrimp-sponge associations occur frequently in marine ecosystems, serving as model systems for the evolution of eusociality. Here, we describe the first known instance of such association in freshwater from an ancient lake in Indonesia. The shrimp Caridina spongicola forms an exclusive and probably commensal association with a yet undescribed spongillinid sponge. Phylogenetic and ecological data suggest a comparatively recent origin of both taxa. Climatic fluctuations may have facilitated speciation and occasional hybridization of the shrimp species, which is derived from a rock-dwelling ancestor. Their extremely localized occurrence in an increasingly disturbed area makes both taxa a conservation priority.
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