Marine Biology

, Volume 156, Issue 9, pp 1929–1939 | Cite as

Reproduction and imposex in the edible snail Adelomelon ancilla from northern Patagonia, Argentina

  • Pablo E. Penchaszadeh
  • Carlos Sánchez Antelo
  • Soledad Zabala
  • Gregorio BigattiEmail author
Original Paper


The edible volutid snail Adelomelon ancilla occurs on the Argentine coast and may have the capacity to serve as source of support for local fisheries. However, knowledge of its reproduction is lacking. Over 3 years (from September 2000 to July 2004) we studied the oviposition at Golfo Nuevo, Patagonia by diving. Monthly collections were performed to examine gonadal stages histologically during 2002–2003. Gamete development stages corresponded with the expected period for oviposition occurring from July to November, a time of increasing day length. Oviposition also took place in March when water temperature attained a maximum of 18°C. Following the spawning period, remaining gametes were resorpted in both sexes. Males contained sperm throughout the year, parasperm and eusperm forms were found within the same acinus. Oogonia/oocytes ranged from 20 to 240 μm in diameter during oogenesis. Females commenced laying egg capsules from a shell length of 114 mm. Reproduction is compared with other fishable volutid snails from the Argentine shelf, and suggests the need to apply certain fishing restrictions if the resource begins to be utilized commercially. The imposex condition was found in snails from some shipping areas. The frequency of this condition declined with distance from the port.


Digestive Gland Bursa Copulatrix Gonadal Stage Gonadal Cycle Oviposition Event 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.



Special thanks to Eugenia and Victoria Zavattieri and Oscar Wheeler for sampling and field assistance. Fabián Tricárico (MACN) and Isabel Farías helped with SEM. Miguel Angel Diaz, Julio Rúa, Ricardo Vera, Nestor Ortiz and Fabián Quiroga also helped in field activities and Katherine Noble helped improving the English version of this manuscript. This project was partially support by PIP 5301, UBACyT 171 and PICT 01869 Redes.


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Copyright information

© Springer-Verlag 2009

Authors and Affiliations

  • Pablo E. Penchaszadeh
    • 1
  • Carlos Sánchez Antelo
    • 1
  • Soledad Zabala
    • 2
  • Gregorio Bigatti
    • 2
    Email author
  1. 1.Facultad de Ciencias Exactas y Naturales, Museo Argentino de Ciencias Naturales Bernardino Rivadavia CONICET, Universidad de Buenos AiresBuenos AiresArgentina
  2. 2.Centro Nacional Patagónico CENPAT, CONICETPuerto MadrynArgentina

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