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Abstract:

The sperm morphology of Adelomelon beckii is described by optical and transmission electron microscopy. Both euspermatozoa and paraspermatozoa were found in the specimens studied. Euspermatozoa are filiform and have an elongate nucleus capped by an acrosome. A small basal plate lies between the base of the acrosome and the nucleus. The mid-piece consists of U-shaped mitochondria wrapped helically around the central axoneme. A dense annulus at the junction of the mid-piece and glycogen piece is found, ending in a short end-piece, composed of the axoneme surrounded by a plasma membrane. Two types of paraspermatozoa are found, both vermiform but differing internally with respect to the disposition and number of axonemes, as well as to the types of secretory vesicles. We suggest the use of paraspermatozoa as a systematic character to reveal phylogenetic relationships in this family. © 2009 Springer-Verlag and AWI.

Registro:

Documento: Artículo
Título:Ultrastructure of euspermatozoa and paraspermatozoa in the marine gastropod Adelomelon beckii (Caenogastropoda, Volutidae)
Autor:Arrighetti, F.; Giménez, J.
Filiación:CONICET Laboratorio de Invertebrados I, DBBE, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
CONICET Museo Argentino de Ciencias Naturales B. Rivadavia, Av. Ángel Gallardo 470, Buenos Aires, Argentina
Palabras clave:Giant snail; Mollusca; Parasperm; Reproduction; Sperm ultrastructure; gastropod; mitochondrion; phylogenetics; reproductive success; transmission electron microscopy; ultrastructure; Adelomelon; Caenogastropoda; Gastropoda; Mollusca; Volutidae
Año:2010
Volumen:64
Número:2
Página de inicio:143
Página de fin:148
DOI: http://dx.doi.org/10.1007/s10152-009-0184-5
Título revista:Helgoland Marine Research
Título revista abreviado:Helgol. Mar. Res.
ISSN:1438387X
PDF:https://bibliotecadigital.exactas.uba.ar/download/paper/paper_1438387X_v64_n2_p143_Arrighetti.pdf
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_1438387X_v64_n2_p143_Arrighetti

Referencias:

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Citas:

---------- APA ----------
Arrighetti, F. & Giménez, J. (2010) . Ultrastructure of euspermatozoa and paraspermatozoa in the marine gastropod Adelomelon beckii (Caenogastropoda, Volutidae). Helgoland Marine Research, 64(2), 143-148.
http://dx.doi.org/10.1007/s10152-009-0184-5
---------- CHICAGO ----------
Arrighetti, F., Giménez, J. "Ultrastructure of euspermatozoa and paraspermatozoa in the marine gastropod Adelomelon beckii (Caenogastropoda, Volutidae)" . Helgoland Marine Research 64, no. 2 (2010) : 143-148.
http://dx.doi.org/10.1007/s10152-009-0184-5
---------- MLA ----------
Arrighetti, F., Giménez, J. "Ultrastructure of euspermatozoa and paraspermatozoa in the marine gastropod Adelomelon beckii (Caenogastropoda, Volutidae)" . Helgoland Marine Research, vol. 64, no. 2, 2010, pp. 143-148.
http://dx.doi.org/10.1007/s10152-009-0184-5
---------- VANCOUVER ----------
Arrighetti, F., Giménez, J. Ultrastructure of euspermatozoa and paraspermatozoa in the marine gastropod Adelomelon beckii (Caenogastropoda, Volutidae). Helgol. Mar. Res. 2010;64(2):143-148.
http://dx.doi.org/10.1007/s10152-009-0184-5