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/502211nas a2200133   4500008004100000245014300041210006900184300001200253490000700265520172400272100001901996700001802015856004402033       2006                        eng d00aNew Species and New Records of the Perinereis nuntia Species Group (Nereididae: Polychaeta) from Taiwan and Other Indo-West Pacific Shores0 aNew Species and New Records of the Perinereis nuntia Species Gro  a553-5770 v453 aThis study was undertaken in order to describe new and poorly known species of the Perinereis nuntia species group (Nereididae: Polychaeta), which are concurrently being investigated genetically. Six species are described from intertidal waters of Taiwan and adjacent areas, including southern Japan, east-central and southeastern China, Singapore, Malaysia, and Indonesia (Java). These include P. mictodonda (Marenzeller, 1879), P. nuntia (Savigny, 1818), P. rhombodonta (Wu, Sun and Yang, 1981), and 3 new species, P. shikueii sp. nov., P. viridis sp. nov., and P. wilsoni sp. nov. Literature records of P. nuntia brevicirris from the region are referred to as P. mictodonta; those of P. nuntia vallata are referred to as P. wilsoni sp. nov. All species can be distinguished by a combination of pharyngeal paragnath numbers and the arrangement, and length ratios of the dorsal cirrus to dorsal notopodial ligule of the anterior and posterior parapodia. A key to tropical and subtropical Indo-West Pacific species of the P. nuntia species group is provided. All species inhabit intertidal sandy substrata under rocks or boulders, except P. viridis sp. nov., which occurs on reef shores in rock crevices. Perinereis wilsoni sp. nov. is found on rocky or reef limestone coasts, whereas the other 4 species occur mainly on sedimentary intertidal flats. The high diversity of the P. nuntia species group in Taiwan is attributed to a combination of factors including intrinsic reproductive features and Taiwan .. s position straddling 2 major biogeographic regions: the tropical Indo-West Pacific and the temperate Japan-East China Sea. The present results reveal a degree of sympatry not previously reported for the genus.1 aGlasby, C., J.1 aHsieh, H., L.  uhttps://annelida.myspecies.info/node/17