Li, X. & Qi, Z. (1994). Studies on the comparative anatomy, systematic classification and evolution of Chinese oysters (In Chinese). Studia Marina Sinica. 35: 143-173.

286047

Li, X. & Qi, Z.

1994

35: 143-173

Publication

This paper details the comparative anatomical studies on Chinese oysters According to the presence or absence of promyal chambers and the connections between the body and the gills, Chinese oysters can be divided into three types and subdivided into six groups.Type 1, with left and right promyal chambers, including one group; Type 2, with right promyal chamber only, including four groups; and Type 3, without promyal chamber, including one group.The evolution trends in the digestive, nervous, circulatory, and other systems, are discussed on the basis of anatomy, and the evolution through the living oysters is suggested. Many new soft part characters are found, and some are first used in oyster classifications. The world-wide confusions in species of Hyotissa, Parahyotissa, Saccostrea and Crassostrea are clarified to some extent. The old problems in identifying Chinese oysters are solved this time. One new monotypic genus Talonostrea and its species T. talonata, which are very important in the evolution lines, and a newly recorded species Alectryonella plicatula is described. The 20 previously species are now re-identified as 15 species (Hyotissa hyotis, Parahyotissa imbricata, P. sinensis, Lopha cristagalli, Dendostrea folium, D. crenulifera, Alectryonella plicatula, Tatonostrea talonata, Crassostrea gigas, C. rivulatis, Crassostrea sp., Saccostrea cucullata, S. echinata, Planost-rea pestigris, and Ostrea denselamellosa), belonging in two families, Grypheidae. and Ostreidae, and four subfamilies, Pycnodonteinae, Lopheinae, Crassostreinae and Ostreinae.

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