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SIBLING SPECIES OF ARTEMIA: A LIGHT AND ELECTRON MICROSCOPIC SURVEY OF THE MORPHOLOGY OF THE FRONTAL KNOBS. PART II

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ABSTRACT In this note the frontal knob morphology of a number of Italian populations of Artemia from Sardinia and Central Italy is analyzed and discussed. All of the samples examined showed a subconical shape of the knobs, almost identical to the description formerly given for the Artemia from San Bartolomeo salterns (Cagliari), once named A. salina (Barigozzi, 1974; Piccinelli and Prosdocimi, 1968), and subsequently named A. tunisiana (Bowen et al., 1978; Barigozzi, 1980; Clark and Bowen, 1976). As already pointed out by Mura et al. (1989), all the Mediterranean samples we examined exhibited a common pattern in frontal knob morphology. According to a recent investigation (Baratelli et al., 1988), all the samples from Sardinia, even though characterized by heteroploidy to some extent, seem to correspond in respect to morphological characters to the typical morphology of A. salina sensu Barigozzi (1974), and hence to the morphology of A. tunisiana, as the first Sardinian Artemia observed was subsequently named (Bowen, 1965; Bowen et al., 1978). Nonetheless, the problem concerning to which species of the genus should these populations be ascribed needs further investigation, particularly considering recent data on north African and Sicilian populations (Rodinò et al., 1987). Therefore, we prefer here to use only the generic name (Barigozzi, 1980; Barigozzi and Baratelli-Zambruni, 1982; Bowen et al., 1980).

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/content/journals/10.1163/193724089x00395
1989-01-01
2016-12-09

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