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Abstract:

A total of 67 Discopyge tschudii was captured. Individuals were sexed, measured and their stomach content analysed. Siphon tips of the bivalve Amiantis purpurata from each stomach were individually counted, weighed and their length and width measured. The size-frequency distribution of the local population of A. purpurata was surveyed for two years. Siphons of A. purpurata were the main food item in 90% of individuals having stomach contents. The clam population was markedly bimodal, with 24 mm and 46 mm mean shell length for the younger and older size-classes, respectively. Grazing by D. tschudii on A. purpurata varied with size and sex of the fish. Small rays mainly ingested small siphons and large rays large siphons. Nipped siphon tips were longer in male than in female rays.

Registro:

Documento: Artículo
Título:Siphon nipping of the bivalve Amiantis purpurata by the electric ray Discopyge tschudii in Mar del Plata, Argentina
Autor:Arrighetti, F.; Livore, J.P.; Penchaszadeh, P.E.
Filiación:Facultad de Ciencias Exactas Y Naturales, UBA and Museo Argentino de Ciencias Naturales, Avenida Angel Gallardo 470, (1405) Buenos Aires, Argentina
Idioma: Inglés
Palabras clave:bivalve; feeding ecology; size distribution; stomach content; Argentina; Buenos Aires [Argentina]; Mar del Plata; South America; Western Hemisphere; World; Amiantis; Bivalvia; Discopyge ommata; Discopyge tschudii
Año:2005
Volumen:85
Número:5
Página de inicio:1151
Página de fin:1154
DOI: http://dx.doi.org/10.1017/S0025315405012221
Título revista:Journal of the Marine Biological Association of the United Kingdom
Título revista abreviado:J. Mar. Biol. Assoc. U.K.
ISSN:00253154
CODEN:JMBAA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00253154_v85_n5_p1151_Arrighetti

Referencias:

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Citas:

---------- APA ----------
Arrighetti, F., Livore, J.P. & Penchaszadeh, P.E. (2005) . Siphon nipping of the bivalve Amiantis purpurata by the electric ray Discopyge tschudii in Mar del Plata, Argentina. Journal of the Marine Biological Association of the United Kingdom, 85(5), 1151-1154.
http://dx.doi.org/10.1017/S0025315405012221
---------- CHICAGO ----------
Arrighetti, F., Livore, J.P., Penchaszadeh, P.E. "Siphon nipping of the bivalve Amiantis purpurata by the electric ray Discopyge tschudii in Mar del Plata, Argentina" . Journal of the Marine Biological Association of the United Kingdom 85, no. 5 (2005) : 1151-1154.
http://dx.doi.org/10.1017/S0025315405012221
---------- MLA ----------
Arrighetti, F., Livore, J.P., Penchaszadeh, P.E. "Siphon nipping of the bivalve Amiantis purpurata by the electric ray Discopyge tschudii in Mar del Plata, Argentina" . Journal of the Marine Biological Association of the United Kingdom, vol. 85, no. 5, 2005, pp. 1151-1154.
http://dx.doi.org/10.1017/S0025315405012221
---------- VANCOUVER ----------
Arrighetti, F., Livore, J.P., Penchaszadeh, P.E. Siphon nipping of the bivalve Amiantis purpurata by the electric ray Discopyge tschudii in Mar del Plata, Argentina. J. Mar. Biol. Assoc. U.K. 2005;85(5):1151-1154.
http://dx.doi.org/10.1017/S0025315405012221