Trophic ecology of a corymorphid hydroid population in the Bahía Blanca Estuary, Southwestern Atlantic
- Dutto, María Sofía
- Carcedo, Maria Cecilia
- Nahuelhual, Eugenia Gabriela
- Conte, Alberto Fabian
- Berasategui, Anabela Anhi
- Garcia, Maximiliano Darío
- Puente Tapia, Francisco Alejandro
- Genzano, Gabriel Nestor
- Hoffmeyer, Monica Susana
DOIAbstract
Solitary macroscopic polyps are rare, and ecological information about them, such as diet and feeding rates is scarce worldwide. Here we describe the population of the solitary and seasonal polyps of Corymorpha januarii found in the Bahía Blanca Estuary, Argentina, and provide one of the first approaches to define their feeding ecology by gut content analysis. We analyzed the substrate and the accompanying benthic components, and provided in situ observations as well as observations on polyps kept in aquarium. A mean of 4 types of trophic items per polyp and 13.33 consumed prey items per polyp were obtained, representing a daily carbon consumption of 1.8 mg C per polyp per day and 75 mg C per square meter per day when considering polyp dens...
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