Skip to main content Skip to main navigation menu Skip to site footer
Responsive image
Issue: Vol. 5361 No. 3: 2 Nov. 2023
Type: Article
Published: 2023-11-02
DOI: 10.11646/zootaxa.5361.3.8
Page range: 427-443
Abstract views: 319
PDF downloaded: 23

Description of the early shell morphology of three species of Pectinidae (Mollusca: Bivalvia) from Argentina

Cátedra Diversidad Animal I and Laboratorio de Virología y Genética Molecular; Facultad de Ciencias Naturales y Ciencias de la Salud; Universidad Nacional de la Patagonia San Juan Bosco; 9 de Julio y Belgrano s/n; 9100 Trelew; Chubut; ARGENTINA
Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”; Av. Ángel Gallardo 470; C1405DJR Ciudad Autónoma de Buenos Aires; ARGENTINA
Mollusca Patagonia dissoconch taxonomy pectinid Aequipectinini Chlamydini

Abstract

We describe the shell morphology of the prodissoconch and early postlarval shell of Aequipecten tehuelchus (d’Orbigny), Flexopecten felipponei (Dall), and Zygochlamys patagonica (King) from the southern coast of Argentina. Aequipecten tehuelchus has a nepioconch microsculpture with fine, dense, and regularly distributed pits. The byssal notch is initially deep and narrow but becomes sinuous at the beginning of the post-nepioconch. The nepioconch of Zygochlamys patagonica has antimarginal riblets; the byssal notch is wider than in A. tehuelchus and does not present the sinuosity observed in the other species. The microsculpture of the nepioconchs of F. felipponei and A. tehuelchus is indistinguishable. The earliest differentiation between the two species appears with the post-nepionic left valve, in which A. tehuelchus exhibits between 15 and 20 primary ribs while F. felipponei displays 28 to 34 faint folds. Zygochlamys patagonica shows 21 to 31 primary and secondary ribs. The taxonomic status of the three species is discussed in light of these findings and with respect to current adult-shell taxonomy and genetic analyses.

 

References

  1. Amoroso, R.O., Parma, A.M., Orensanz, J.M. & Gagliardini, D.A. (2011) Zooming the macroscope: medium-resolution remote sensing as a framework for the assessment of a small-scale fishery. ICES Journal of Marine Science, 68 (4), 696–706. https://doi.org/10.1093/icesjms/fsq162
  2. Bavay, A. (1906) Note au sujet de Pecten de la République Argentine. Journal de Conchyliologie, 54, 1–11.
  3. Carter, J.G., Harries, P.J., Malchus, N., Sartori, A.F., Anderson, L.C., Bieler, R., Bogan, A.E., Coan, E.V., Cope, J.C.W., Cragg, S.M., García-March, J.R., Hylleberg, J., Kelley, P., Kleemann, K., Kříž, J., McRoberts, C., Mikkelsen, P.M., Pojeta, J. Jr., Skelton, P.W., Tëmkin, I., Yancey, T. & Zieritz, A. (2012) Part N, Revised. Vol. 1. Chapter 31: Illustrated Glossary of the Bivalvia. Treatise Online, Kansas University Paleontological Institute, 48, 1–209. https://doi.org/10.17161/to.v0i0.4322
  4. Castellanos, Z.J.A. de (1971) Los Chlamys más comunes del Mar Argentino. Neotropica, 17 (53), 55–66.
  5. Ciocco, N. (1992a) Anatomía de la “vieira tehuelche” Chlamys tehuelchus (d´Orb.) (Pelecipoda: Pectinidae): valva, ligamento y manto. Neotropica, 38 (99), 21–34.
  6. Ciocco, N. (1992b) Anatomía de la “vieira tehuelche”, Chlamys tehuelcha (d´Orbigny, 1864). Organización general, branquias, pie y aparato bisal (Bivalvia: Pectinidae). Biología Marina y Oceanografía, 27, 17–35.
  7. Ciocco, N. (1995) Anatomía de la “vieira tehuelche” Aequipecten tehuelchus (d´Orbigny, 1846) [= Chlamys tehuelcha]. III. Sistema digestivo, cardio-vascular y excretor. (Bivalvia: Pectinidae). Biología Marina y Oceanografía, 30, 135–153.
  8. Ciocco, N. (1998) Anatomía de la “vieira tehuelche”, Aequipecten tehuelchus (d´Orbigny, 1864) (= Chlamys tehuelcha). IV. Sistema nervioso y estructuras sensoriales (Bivalvia: Pectinidae). Biología Marina y Oceanografía, 33, 25–42.
  9. Dall, W.H. (1922) Two new bivalves from Argentina: The Nautilus, 36, 58–59.
  10. Dijkstra, H. & Marshall, B. (2008) The Recent Pectinoidea of the New Zealand region (Mollusca: Bivalvia: Propeamussiidae, Pectinidae and Spondylidae). Molluscan Research, 28 (1), 1–88.
  11. Dunker, W. (1850) Diagnoses molluscorum quorandam novorum. Zeitschrift für Malakozoologie, 7 (2), 30–32.
  12. Fischer, P. (1880–1887) Manuel de conchyliologie et de paléontologie conchyliologique, ou histoire naturelle des mollusques vivants et fossiles suivi d’un Appendice sur les Brachiopodes par D. P. Oehlert. Avec 23 planches contenant 600 figures dessinées par S. P. Woodward. Published in 11 parts (Fascicules). F. Savy., Paris, xxiv + 1369 pp., 23 pls. [1: 1–112, 21 September 1880; 2: 113–192, 16 March 1881; 3: 193–304, 28 July 1881; 4: 305–416, 5 May 1882; 5: 417–512, 21 February 1883; 6: 513–608, 20 December 1883; 7: 609–688, 30 June 1884; 8: 689–784, 29 January 1885; 9: 785–896, 31 August 1885; 10: 897–1008, 30 April 1886; 11: 1009–1369, 15 June 1887]
  13. Getino Mamet, L.N., Soria, G. & Munguía Vega, A. (2021) Multiple-scale processes shape the population genetics of Tehuelche scallop, Aequipecten tehuelchus, in Northern Patagonia. Fisheries Research, 240, 1–11. https://doi.org/10.1016/j.fishres.2021.105971
  14. Ihering, H. von (1907) Les mollusques fossiles du Tertiaire et du Crétacé supérieur de l’Argentine. Anales del Museo Nacional de Buenos Aires, Series 3, 7, xiii + 1–611, 18 pls.
  15. Jonkers, H.A. (2003) Late Cenozoic-Recent Pectinidae (Mollusca: Bivalvia) of the Southern Ocean and neighbouring regions. Monographs on Marine Mollusca Nº 5. Backhuys Publishers, Leiden, 125 pp.
  16. King, P.P. (1832) Description of the Cirripedia, Conchifera and Mollusca in a collection formed by the officers of HMS Adventure and Beagle employed between the years 1826 and 1830 in surveying the southern coasts of South America, including the straits of Magalhaens and the coast of Tierra del Fuego. Zoological Journal, 5, 332–349.
  17. Narvarte, M. (2001) Settlement of tehuelche scallop, Aequipecten tehuelchus D’Orb., larvae on artificial substrata in San Matías Gulf (Patagonia, Argentina). Aquaculture, 196 (1–2), 55–65. https://doi.org/10.1016/S0044-8486(00)00590-1
  18. Malchus, N. & Sartori, A. (2013) Part N, Revised, Volume 1, Chapter 4: The Early Shell: Ontogeny, Features, and Evolution. Treatise Online. Kansas University Paleontological Institute 61, 1–114. https://doi.org/10.17161/to.v0i0.4658
  19. d’Orbigny, A.D. (1834–1847) Mollusques. In: Bertrand, C.P. (Ed.), Voyage dans l’Amérique Meridionale (Le Brésil, La République Orientale de L’Uruguay, La République Argentine, La Patagonie, La République du Chili, La République de Bolivia, La République du Perou), exécuté pendant les années 1826, 1827, 1828, 1829, 1830, 1831, 1832 et 1833. Chez Ve. Levrault, Paris, pp. 758. https://doi.org/10.5962/bhl.title.85973
  20. Orensanz, J.M., Pascual, M. & Fernández, M. (1991) Biology and fisheries of the scallops from the Southwest Atlantic Ocean. In: Shumway, S.E. (Ed.), Scallops: Biology, Ecology and Aquaculture. Elsevier, New York, pp. 981–999
  21. Oviedo, L., Cordero, D., Peña, J., Saavedra, C. & Cazzaniga, N. (2012) Análisis filogenético preliminar de vieiras costeras patagónicas. In: VIII Jornadas Nacionales de Ciencias del Mar. XVI Coloquio de Oceanografía. Libro de Resúmenes. Universitaria de la Patagonia, Comodoro Rivadavia, pp. 53. [http://www.edupa.unp.edu.ar/wp-content/uploads/2018/12/Libro-resumenes-VIIIJNCM.pdf]
  22. Peña, J., Ríos, C., Peña, S. & Canales, J. (1998) Ultrastructural, morphogenesis of pectinid spat from the Western Mediterranean: A way to differentiate seven genera. Journal of Shellfish Research, 17 (1), 123–130.
  23. Philippi, R. (1845) Diagnosen einiger neuer Conchylien. Archiv für Naturgeschichte, 11, 50–71.
  24. Puslednik, L. & Serb, J.M. (2008) Molecular phylogenetics of the Pectinidae (Mollusca: Bivalvia) and effect of increased taxon sampling and outgroup selection on tree topology. Molecular Phylogenetics and Evolution, 48 (3),1178–1188. https://doi.org/10.1016/j.ympev.2008.05.006
  25. Real, L.E., Julio, N., Gardenal, N.C. & Ciocco, N.F. (2004) Genetic variability of Tehuelche scallop, Aequipecten tehuelchus, populations from the Patagonian costs (Argentina). Journal of the Marine Biological Association of the United Kingdom, 84, 235–238. https://doi.org/10.1017/S0025315404009099h
  26. Rios, C. del (2004) Revision of the Neogene Pectinids (Mollusca: Bivalvia) of Eastern Santa Cruz and Chubut provinces (Patagonia: Argentina). Journal of Paleontology, 78 (4), 690–699. https://doi.org/10.1666/0022-3360(2004)078%3C0690:ROTLNP%3E2.0.CO;2
  27. Rios, E.C. (2009) Compendium of Brazilian sea shells. Evangraf, Rio Grande, 668 pp.
  28. Rosenfeld, S., Aldea, C., López, Z., Maturana, C., Ojeda, J., Bahamonde Mihovilovich, F., Detrée, C., Mansilla, A., Poulin, E. & Gérard, K. (2021) Unveiling the unknown phylogenetic position of the scallop Austrochlamys natans and its implications for marine stewardship in the Magallanes Province. Scientific Reports, 11, 7241. https://doi.org/10.1038/S41598-021-86492-9
  29. Saavedra, C. & Peña, J.B. (2006) Phylogenetics of American scallops (Bivalvia: Pectinidae) based on partial 16S and 12S ribosomal RNA gene sequences. Marine Biology, 150, 111–119. https://doi.org/10.1007/s00227-006-0335-z
  30. Sacco, F. (1897) I molluschi dei terreni terziarii del Piemonte e della Liguria descritti dal Dott. Federico Sacco, Parte 24. (Pectinidae) Bollettino dei Musei di Zoologia ed Anatomia comparata della Reale Universitá di Torino, 12 (298), 101–102.
  31. Schejter, L. & Bremec, C. (2007) Epibionts on Flexopecten felipponei (Dall, 1922), an uncommon scallop from Argentina. American Malacological Bulletin, 22, 75–82. https://doi.org/10.4003/0740-2783-22.1.75
  32. Schejter, L., Bremec, C., Waloszek, D. & Escolar, M. (2010) Recently settled stages and larval developmental mode of the bivalves Zygochlamys patagonica and Hiatella meridionalis in the Argentine sea. Journal of Shellfish Research, 29 (1), 63–67. https://doi.org/10.2983/035.029.0127
  33. Schejter, L. & Bremec, C. (2012) El nombre científico de la ‘Vieira patagonica’. Revista de Investigación y Desarrollo Pesquero, 21, 73–79.
  34. Soria, G., Orensanz, J.M., Morsán, E.M., Parma, A.M. & Amoroso, R.O. (2016) Scallops biology, fisheries and management in Argentina. In: Shumway, S. & Parsons, G.J. (Eds.), Scallops: Biology, Ecology and Aquaculture. Elsevier, Amsterdam, pp. 1019–1046. https://doi.org/10.1016/B978-0-444-62710-0.00025-0
  35. Trovant, B., Real, L., Parma, A.M., Orensanz, J.M. & Basso, N. (2018) Evolutionary relationships of the Tehuelche scallop Aequipecten tehuelchus (Bivalvia: Pectinidae) from the south-western Atlantic Ocean. Journal of the Marine Biological Association of the United Kingdom, 99 (2), 375–383. https://doi.org/10.1017/S0025315418000292
  36. Waller, T.R. (1984) The ctenolium of scallop shells: Functional morphology and evolution of a key family-level character in the Pectinacea (Mollusca: Bivalvia). Malacologia, 25 (1), 203–219.
  37. Waller, T.R. (1991) Evolutionary relationships among commercial scallops (Mollusca: Bivalvia: Pectinidae). In: Shumway, S.E. (Ed.), Scallops: Biology, Ecology and Aquaculture. Elsevier, New York, New York, pp. 1–73
  38. Waller, T.R. (1993) The evolution of “Chlamys” (Mollusca: Bivalvia: Pectinidae) in the tropical western Atlantic and eastern Pacific. American Malacological Bulletin, 10 (2), 195–249.
  39. Waller, T.R. (2006) New phylogenies of the Pectinidae (Mollusca: Bivalvia): reconciling morphological and molecular approaches. In: Shumway, S.E. & Parsons, G.J. (Eds.), Scallops: Biology, Ecology and Aquaculture. Elsevier, Amsterdam, pp. 1–44. https://doi.org/10.1016/S0167-9309(06)80028-1
  40. Waloszek, D. (1984) Variabilität, Taxonomie und Verbreitung von Chlamys patagonica (King & Broderip, 1832) und Anmerkungen zu weiteren Chlamys-Arten von der Südspitze Süd-Amerikas (Mollusca, Bivalvia, Pectinidae). Verhandlungen des naturwissenschaftlichen Vereins Hamburg, 27, 207–276.
  41. Waloszek, D. (1991) Chlamys patagonica (King & Broderip, 1832), a long “neglected” species from the shelf off the Patagonia coast. In: Sandifer, P.A. (Ed.), An international compendium of scallop biology and culture. World Aquaculture Workshops, Baton Rouge, Louisiana, pp. 256–263.
  42. Wirtz, K. & Smith, S.L. (2020) Vertical migration by bulk phytoplankton sustains biodiversity and nutrient input to the surface ocean. Science Report, 10 (1142), 1–12. https://doi.org/10.1038/s41598-020-57890-2
  43. WoRMS Editorial Board (2023) World Register of Marine Species. VLIZ. Available from: https://www.marinespecies.org (accessed 7 July 2023) https://doi.org/10.14284/170