@article {300,
	title = {An Association between Hesione picta (Polychaeta: Hesionidae) and Ophionereis reticulata (Ophiuroidea: Ophionereididae) from the Brazilian Coast},
	journal = {Zoological Studies},
	volume = {51},
	year = {2012},
	pages = {762-767},
	abstract = {An 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{\'{\i}ba, 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.},
	author = {De Assis, J. E. and Bezerra, E. A. S. and Brito, R. J. and Gondim, A. I. and Christoffersen, M. L.}
}
@article {295,
	title = {Genetic structure of Hediste diversicolor (Polychaeta, Nereididae) from the northwestern Mediterranean as revealed by DNA inter-simple sequence repeat (ISSR) markers},
	journal = {Marine Ecology Progress Series},
	volume = {452},
	year = {2012},
	pages = {171-178},
	abstract = {The polychaete Hediste diversicolor is characterised by a high degree of genetic structure among populations. The genetic differentiation has been related to the presence of cryptic species, corresponding to Atlantic and Mediterranean lineages whose divergence may have been driven by vicariance and/or selection. In the present study we used DNA inter-simple sequence repeat (ISSR) markers to validate the genetic structure in 9 populations from the northwestern Mediterranean. We also analysed patterns of genetic differentiation among Mediterranean and Atlantic samples to assess the occurrence of further cryptic species in the northwestern Mediterranean. We compared our results with previous mitochondrial DNA data to assess whether nuclear and mitochondrial genetic patterns were consistent. Analysis of ISSR banding patterns showed: (1) a geographical structuring within the northwestern Mediterranean, and (2) a sharp genetic differentiation between Atlantic and Mediterranean groups of populations, confirming the findings from previous mitochondrial DNA surveys. The pattern of genetic variability found in the northwestern Mediterranean is unlikely to reflect the occurrence of cryptic species in this area. On the other hand, our results are consistent with the occurrence of 2 cryptic species in the Mediterranean and Atlantic, whose genetic differentiation may have been driven by vicariance. Finally, the present study further highlights the usefulness and effectiveness of ISSR markers for monitoring genetic diversity in aquatic invertebrates.},
	author = {Cossu, P. and Maltagliati, F. and Lai, T. and Casu, M. and Curini-Galletti, M. and Castelli, A.}
}
