Latin American Journal of Aquatic Research, 40 (1) March 2012
Production and performance of pure species and hybrid larvae and spat of Mytilus chilensis and M. galloprovincialis from laboratory crosses.
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.
Author: Jorge E. Toro, Pablo A. Oyarzún, Carolina Peñaloza, Angélica Alcapán, Viviana Videla, Jorge Tillería, Marcela Astorga & Víctor Martínez

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