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Abstract:

A new species, Crepidula cachimilla, is described based on a population from 15 m depth in San Antonio Oeste, Argentina. Shell length ranged from 5.4 to 28.5 mm for males and from 9.6 to 52.2 mm for females. The minimum shell length recorded for a brooding female was 23.5 mm, and the maximum shell length was 49.3 mm. A detailed anatomical description is given, showing as main characters of the species a relative thick columellar muscle, a greater closure of the palliai cavity aperture by a fusion of the mantle border, a very small osphradium, with about 16 broad filaments, endostyle divided by a middle longitudinal furrow, very large salivary glands, duplication of both gastric ducts to the digestive gland, male seminal vesicle very long and with irregular walls, pallial oviduct with a broad vaginal duct and a tall papilla originating both from palliai floor and roof. Brood egg masses of mature females contained from 15 to 65 egg capsules. The triangular-shaped egg capsules measured between 2.2 and 3.4 mm in length and between 2.3 and 3.8 mm in width. Each egg capsule contained between 129 and 563 eggs. The number of eggs per capsule and the egg diameter did not correlate with female shell length. Uncleaved eggs measured between 180 and 200 μm in diameter. They all developed synchronously within the egg capsules. Prehatching veliger shells measured between 260 and 300 μm in length. After hatching at the veliger stage, protoconch length during metamorphosis ranged between 700 and 800 μm. These parameters neither coincide with those reported by Hoagland (1977) for the similar Californian Crepidula onyx, nor with the reproductive characters reported by Miloslavich & Penchaszadeh (2001) for Crepidula aplysioides, which supposedly occurs in the region.

Registro:

Documento: Artículo
Título:Crepidula cachimilla (Mollusca: Gastropoda), a new species from Patagonia, Argentina
Autor:Cledón, M.; Simone, L.R.L.; Penchaszadeh, P.E.
Filiación:Fac. de Ciencias Exactas Y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
Alfred Wegener Inst. Polar M., Bremerhaven, Germany
Museu de Zoologia, Universidade de São Paulo, Caixa Postal 42594, 04299-970 São Paulo, SP, Brazil
Palabras clave:Anatomy; Calyptraeoidea; Crepidula cachimilla; Hermaphroditism; New species; Patagonia; Reproduction; Southwestern Atlantic; Calyptraeoidea; Crepidula; Crepidula onyx; Gastropoda; Mollusca; Onyx
Año:2004
Volumen:46
Número:1
Página de inicio:185
Página de fin:202
Título revista:Malacologia
Título revista abreviado:Malacologia
ISSN:00762997
PDF:https://bibliotecadigital.exactas.uba.ar/download/paper/paper_00762997_v46_n1_p185_Cledon.pdf
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00762997_v46_n1_p185_Cledon

Referencias:

  • Aguirre, M.L., Farinati, E.A., Moluscos del cuaternario marino de la Argentina (2000) Boletín de la Academia Nacional de Ciencias, Córdoba, Rep. Argentina, 64, pp. 235-333
  • Brown, D.I., Olivares, C.A., A new species of Crepidula (Mollusca: Mesogastropoda: Calyptraeidae) from Chile: Additional characters for the identification of eastern Pacific planar Crepidula group (1996) Journal of Natural History, 30, pp. 1443-1458
  • Chaparro, O.R., Paschke, K.A., Nurse egg feeding and energy balance in embryos of Crepidula dilatata (Gastropoda: Calyptraeidae) during intracapsular development (1990) Marine Ecology Progress Series, 65, pp. 183-191
  • Cledón, M., Penchaszadeh, P.E., Reproduction and brooding of Crepidula argentina Simone, Pastorino & Penchaszadeh, 2000 (Gastropoda: Calyptraeidae) (2001) The Nautilus, 115, pp. 15-21
  • Coe, W.R., The reproductive organs of the prosobranch mollusk Crepidula onyx and their transformation during the change from male to female phase (1942) Journal of Morphology, 70, pp. 501-512
  • Collin, R., Phylogeny of the Crepidula plana (Gastropoda: Calyptraeidae) cryptic species complex in North America (2000) Canadian Journal of Zoology, 78, pp. 1500-1514
  • Dall, W.H., Report on a collection of shells from Peru, with a summary of the littoral marine Mollusca of the Peruvian zoological province (1909) Proceedings of the U. S. National Museum, 37 (1704), pp. 147-294. , pls. 20-28
  • Gallardo, C., Crepidula philippiana n. sp. nuevo gastrópodo Calyptraeida de Chile con especial referencia al patrón de desarrollo (1977) Studies on Neotropical Fauna and Environment, 12, pp. 177-185
  • Gallardo, C., Especies gemelas del género Crepidula (Gastropoda, Calyptraeidae) en la costa de Chile; una redescripción de C. dilatata Lamarck y descripción de C. fecunda n. sp. (1979) Studies on Neotropical Fauna and Environment, 14, pp. 215-226
  • Gallardo, C., Reproduction in Crepidula philippiana (Gastropoda, Calyptraeidae) from southern Chile (1996) Studies on Neotropical Fauna and Environment, 31, pp. 1-6
  • Hoagland, K.E., Systematic review of fossil and recent Crepidula and discussion of evolution of the Calyptraeidae (1977) Malacologia, 16, pp. 353-420
  • Hoagland, K.E., Ecology and larval development of Crepidula protea (Prosobranchia: Crepidulidae) from southern Brazil: A new type of egg capsule for the genus (1983) The Nautilus, 97, pp. 105-109
  • Hoagland, K.E., Patterns of encapsulation and brooding in Calyptraeidae (Prosobranchia: Gastropoda) (1986) American Malacological Bulletin, 4, pp. 173-183
  • Miloslavich, P., Penchaszadeh, P.E., Reproduction of Crepidula aplysioides Reeve (Caenogastropoda) from la Restinga Lagoon, Venezuela (2001) Abstracts, World Congress of Malacology 2001, p. 224. , L. SALVINI, J. VOLTZOW, H. SATTMANN & G. STEINER, eds., Vienna, Austria (Unitas Malacologica)
  • Miloslavich, P., Penchaszadeh, P.E., Carbonini, A.K., Reproduction of Crepidula aculeata (Gastropoda, Calyptraeidae) from the southern Caribbean (Venezuela) (2003) Veliger, 46 (3), pp. 269-274
  • Parodiz, J.J., Las especies de Crepidula de las costas argentinas (1939) Physis, 17, pp. 685-709
  • Simone, L.R.L., Comparative morphological study and phylogeny of representatives of the Superfamilies Calyptraeoidea and Hipponicoidea, (Mollusca, Caenogastropoda) (2002) Biota Neotropica, 2 (2), pp. 1-102
  • Simone, L.R.L., Morphologic and phylogenetic study of the western Atlantic Crepidula plana complex (Caenogastropoda, Calyptraeidae), with description of three new species from Brazil Zootaxa, , submitted
  • Simone, L.R.L., Pastorino, G., Penchaszadeh, P.E., Crepidula argentina (Gastropoda: Calyptraeidae), a new species from the littoral of Argentina (2000) The Nautilus, 114, pp. 127-141

Citas:

---------- APA ----------
Cledón, M., Simone, L.R.L. & Penchaszadeh, P.E. (2004) . Crepidula cachimilla (Mollusca: Gastropoda), a new species from Patagonia, Argentina. Malacologia, 46(1), 185-202.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00762997_v46_n1_p185_Cledon [ ]
---------- CHICAGO ----------
Cledón, M., Simone, L.R.L., Penchaszadeh, P.E. "Crepidula cachimilla (Mollusca: Gastropoda), a new species from Patagonia, Argentina" . Malacologia 46, no. 1 (2004) : 185-202.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00762997_v46_n1_p185_Cledon [ ]
---------- MLA ----------
Cledón, M., Simone, L.R.L., Penchaszadeh, P.E. "Crepidula cachimilla (Mollusca: Gastropoda), a new species from Patagonia, Argentina" . Malacologia, vol. 46, no. 1, 2004, pp. 185-202.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00762997_v46_n1_p185_Cledon [ ]
---------- VANCOUVER ----------
Cledón, M., Simone, L.R.L., Penchaszadeh, P.E. Crepidula cachimilla (Mollusca: Gastropoda), a new species from Patagonia, Argentina. Malacologia. 2004;46(1):185-202.
Available from: https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00762997_v46_n1_p185_Cledon [ ]