Raw Bar No.8 is a collaboration between trained lawyer, Chris Chee, and one of Hong Kong’s famous oyster connoisseurs, John Stewart. Together, 生蠔直送 is to educate customers on proper oyster consumption. After years of work, Hong Kong authorities are gradually latching onto the idea of reef restoration.
The best oysters to have right now at Cafe Deco are Coffin Bay from South Australia that has delicate oyster with a crisp and salty taste. It also matches perfectly well with a glass of Gregoris Pinot Grigio from Veneto Italy. Image by Peter Yeung for Mongabay.Farmers shucking oysters at Lau Fau Shan market.
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This pattern is similar across all three true oyster species, with patterns in TE activity primarily driven by the proliferation of DNA elements, including rolling-circle elements . The genome size of the Hong Kong oyster (~ 758 Mb) is similar to that of the Sydney rock oyster (~ 788 Mb), but the Pacific oyster has a considerably smaller genome (~ 565 Mb). Both the Sydney rock oyster and Hong Kong oyster have a repeat content of ~ 311 Mb, while the Pacific oyster has a repeat content of just 217 Mb (Fig.1, Supplementary information S2). Thus, repeats appear to have played a role in the expansion of genome size in the Hong Kong oyster and Syndney rock oyster.
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However, for Pinctada fucata, Bathymodiolus platifrons, Mizuhopecten yessoensis and Marisa cornuarietis the three ParaHox genes are still relatively closely linked, but often with one or more intervening non-homeobox gene (Fig.4,5). This implies that functional constraints that keep this cluster intact in animals like chordates are not operating in most, and maybe all, of the sampled mollusc lineages. This may be a distinctive feature of molluscs, since dispersal of the ParaHox genes would be expected to be more extensive if the loss of clustering constraints was more ancient. It will be interesting to see what impact, if any, these rearrangements have had on the regulation and expression of mollusc ParaHox genes in future work. Retroelements make up a much smaller proportion of the genome (5.06–7.46%), with SINEs particularly poorly represented in oyster genomes (0.04–0.14%) (Table2, Fig.3a). The species is found on intertidal and subtidal rocks, and oyster farms along Deep Bay (‘Hau Hoi Wan’ in Cantonese) .
In animals, some homeobox genes are clustered together in the genome, either as remnants from ancestral genomic arrangements, or due to coordinated gene regulation. Consequently, analyses of homeobox gene organization across animal phylogeny provide important insights into the evolution of genome organization and developmental gene control, and their interaction. However, homeobox gene organization remains to be fully elucidated in several key animal ancestors, including those of molluscs, lophotrochozoans and bilaterians.