01569nas a2200169   4500008004100000245014900041210006900190300001200259490000700271520097000278100002101248700002301269700001801292700001901310700002701329856004301356       2012                        eng d00aAn Association between Hesione picta (Polychaeta: Hesionidae) and Ophionereis reticulata (Ophiuroidea: Ophionereididae) from the Brazilian Coast0 aAssociation between Hesione picta Polychaeta Hesionidae and Ophi  a762-7670 v513 aAn association between Hesione picta (Polychaeta: Hesionidae) and Ophionereis reticulata (Ophiuroidea: Ophionereididae) from the Brazilian coast. Zoological Studies 51(6): 762-767. This paper is the 1st report on the association between Hesione picta and Ophionereis reticulata, based on specimens found in the southwestern Atlantic, State of Para{\'ıba, Brazil. The associated partners were found under rocks during low tide. We studied 30 specimens of O. reticulata, which harbored 30 hesionids. Observations of animals in aquaria showed that the polychaete responded to the presence of the ophiuroid, slowly crawling until it touched the latter. After recognizing its partner, the polychaete remained in its habitual position on the aboral surface of the ophiuroid, as also observed in the natural environment. On the other hand, when the hesionid was placed with other ophiuroid species which coexist at the same locality, the animals withdrew from each other.1 aDe Assis, J., E.1 aBezerra, E., A. S.1 aBrito, R., J.1 aGondim, A., I.1 aChristoffersen, M., L.  uhttps://annelida.myspecies.info/node/5