Induction of mitogynogenetic diploids and identification of WW super-female using sex-specific SSR markers in half-smooth tongue sole (Cynoglossus semilaevis).

The half-smooth tongue sole (Cynoglossus semilaevis) is an important cultured marine fish as well as a promising model fish for the study of sex determination mechanisms. In the present study, a protocol for artificial induction of mitogynogenesis by hydrostatic pressure using heterologous sperm was developed in half-smooth tongue sole in order to assess homozygosity of gynogens and to identify WW super-female. The optimal initiation time for pressure shock of mitogynogenetic embryos was determined to be 21.

The complete mitochondrial genome of the hard clam Meretrix meretrix.

Veneridae is a diverse, commercially important, and cosmopolitan family. Here we present the complete mitochondrial genome of the hard clam Meretrix meretrix (Bivalvia: Veneridae). The entire mitochondrial genome (mitogenome) sequence of M.

[Comparison of mitochondrial genomes of bivalves].

The structure and organization of mitochondrial genomes of 14 marine bivalves and two freshwater bivalves were analyzed using comparative genomics and bioinformatics methods. The results showed that the organization and gene order of the mitochondrial genomes of these bivalve species studied were different from each other. The size, organization, gene numbers, and gene order of mitochondrial genomes in bivalves at different taxa were different.

[The construction of a preliminary genetic linkage map in the Japanese scallop Mizuhopecten yessoensis].

AFLP markers were used to construct the primary linkage map in a family of Mizuhopecten yessoensis. A total of 1 855 markers were generated in two parents and 52 progenies of the mapping family by using 56 AFLP primer combinations. Among the 1 855 markers, 598 were polymorphic and 354 were in agreement with the Mendelian segregating ratio of 1:1.

A simple channel estimator for space-time coded OFDM systems in rapid fading channels.

A simple channel estimator for space-time coded orthogonal frequency division multiplexing (OFDM) systems in rapid fading channels is proposed. The channels at the training bauds are estimated using the EM (expectation-maximization) algorithm, while the channels at the data bauds are estimated based on the method for modelling the time-varying channel as the linear combination of several time-invariant "Doppler channels". Computer simulations showed that this estimator outperforms the decision-directed tracking in rapid fading channels and that the performance of this method can be improved by iteration.