Anatomy of Phyllodina persica (Bivalvia: Tellinidae), and its first occurrence in southeastern Brazilian waters
DOI:
https://doi.org/10.1590/S0031-10492013000900001Abstract
This study presents a detailed anatomy of a rare Western Atlantic tellin, Phyllodina persica, under a comparative scenario. Some characters are shared with other tellinids such as the large hemipalps compared to gills; gills with outer demibranch with a single lamella absent from the pericardial region; the type-V stomach associated with the style sac conjoined with the proximal intestine, and distal intestine presenting a dorsal and ventral group of loops, separated by the transverse muscle. The stomach presents a laterally enlarged typhlosole, although shallow, without flange in the margins. This feature is not found in other tellinid species. Another noteworthy feature in the stomach is the aperture of both caeca, which are larger than the left pouch aperture, and as wide as the style sac aperture. Furthermore, there is an interesting small process in the anterior hinge, and a pair of oblique protractor muscles placed posteriorly to the anterior foot retractor muscle, being a new type of intrinsic muscle described in bivalves. In addition to anatomy, this study presents the southernmost record of P. persica, expanding its distribution to the southeastern region of Brazil.Downloads
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Published
2013-01-01
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naodefinida
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Responsibility: The scientific content and the opinions expressed in the manuscript are the sole responsibility of the author(s).
Copyrights: Papéis Avulsos de Zoologia. The journal is licensed under a Creative Commons attribution-type CC-BY.
How to Cite
Marques, R. C., & Simone, L. R. L. (2013). Anatomy of Phyllodina persica (Bivalvia: Tellinidae), and its first occurrence in southeastern Brazilian waters . Papéis Avulsos De Zoologia, 53(9), 115-127. https://doi.org/10.1590/S0031-10492013000900001