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Latin american journal of aquatic research
versión On-line ISSN 0718-560X
TORO, Jorge E et al. Production and performance of larvae and spat of pure and hybrid species of Mytilus chilensis and M. galloprovincialis from laboratory crosses. Lat. Am. J. Aquat. Res. [online]. 2012, vol.40, n.1, pp.243-247. ISSN 0718-560X. http://dx.doi.org/10.4067/S0718-560X2012000100024.
Adult specimens of M. galloprovincialis from Concepción Bay and M. chilensis from Yaldad Bay, Chile, were transferred to the laboratory to produce crosses of "pure" and "hybrid" species in order to evaluate early larval development and growth. These variables are important for understanding the dynamics of these two mussel species in this potential hybrid zone where they occur sympatrically. The study showed that fertilization occurred in all crosses and significant differences were not detected between pure lines and hybrids in terms of the percentage of eggs that developed into larvae. Hybrid larvae and spat from both reciprocal crosses grew significantly more than those from pure lines, although valve length values were within the ranges reported in the literature.
Palabras clave : Mytilus chilensis; Mytilus galloprovincialis; larval development; hybrids; Chile.