The more stirring the better: cichlid fishes associate with foraging potamotrygonid rays
| Autor: | Domingos Garrone-Neto, Ivan Sazima |
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| Jazyk: | angličtina |
| Předmět: | |
| Zdroj: | Neotropical Ichthyology, Vol 7, Iss 3, Pp 499-501 |
| Druh dokumentu: | article |
| ISSN: | 1982-0224 1679-6225 |
| DOI: | 10.1590/S1679-62252009000300018 |
| Popis: | One hunting tactic of freshwater rays (Potamotrygonidae), termed "undulate the disc and stir substrate", is here reported to attract cichlids at two sites in the upper Paraná River. The ray species involved in such association are Potamotrygon falkneri and P. motoro, whose activity attract four cichlid species, namely Crenicichla britskii, Satanoperca pappaterra, Cichla kelberi, and Geophagus proximus, the two latter non-native species to the study area. The cichlids approach a ray when it begins to stir the substrate and form sediment clouds, and remain close to the ray during this activity only. The association is here regarded as following behavior even if very transient. |
| Databáze: | Directory of Open Access Journals |
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