Cleaning interactions between shrimps (Palaemonidae) and freshwater stingrays (Potamotrygonidae) in the Parana River, Southeastern Brazil

Author(s)

Garrone-Neto, Domingos ^[1] ; Fazzano Gadig, Otto Bismarck ^[2] ; Zuanon, Jansen ^[3] ; Carvalho, Lucelia Nobre ^[4]

Affiliation

^[1] Univ Estadual Paulista, Coll Fishery Engn, BR-11900000 Registro, SP - Brazil

^[2] Univ Estadual Paulista, Elasmobranch Res Lab, BR-11330900 Sao Vicente, SP - Brazil

^[3] Inst Nacl de Pesquisas da Amazonia, BR-69060001 Manaus, Amazonas - Brazil

^[4] Univ Fed Mato Grosso, Inst Ciencias Nat Humanas & Sociais, BR-78557267 Sinop, MT - Brazil

• Document type: Journal article
• Source: Ichthyological Exploration of Freshwaters; v. 24, n. 4, p. 379-384, APR 2014.
• Web of Science Citations: 0

Abstract

We report the first record of cleaning symbiosis between a river stingray, Potamotrygon falkneri, and a palaemonid shrimp, Macrobrachium jelskii. Shrimps of different sizes were observed cleaning adult stingrays partially buried in sandy substrate and shallow water, during the day in the Parana River, Southeastern Brazil, in four events. The presence of ectoparasites in the P. falkneri individuals was not detected during the cleaning interactions, and the shrimps were probably consuming dead tissue and/or mucus. Thus, the cleaning activity of the palaemonid shrimps was considered commensal and not casual. Despite P. falkneri including palaemonid shrimps in its diet, the low diurnal activity of this predator and a possible state of gastric repletion by the stingrays may have facilitated the cleaning interaction. (AU)

• FAPESP's process: 11/18513-9 - Use of unmanned submersible and acoustic telemetry for the study of elasmobranchs behavior in São Paulo, Brazil
• Grantee: Otto Bismarck Fazzano Gadig
• Support Opportunities: Regular Research Grants