INVESTIGADORES
FERNANDEZ GIMENEZ Analia Veronica
artículos
Título:
Studies of the claws of the crab Cyrtograpsus angulatus Dana (Crustacea, Brachyura, Grapsidae)
Autor/es:
FERNÁNDEZ GIMENEZ, ANALIA VERÓNICA; GOLDEMBERG ADRIANA LIA; DÍAZ ALCIRA OFELIA
Revista:
BIOCIêNCIAS
Editorial:
Facultade de Biociencias-PUCRS
Referencias:
Lugar: Porto Alegre; Año: 2007 vol. 15 p. 29 - 39
ISSN:
0104-3455
Resumen:
The present work describes the histological characteristics and composition of the closer muscle fibers
of Cyrtograpsus angulatus (Dana, 1851). Intermolt adult males were sampled in Mar Chiquita lagoon
(Buenos Aires, Argentina). The claws were dissected and processed by standard histological and
histochemical techniques. The composition of the fibers present in the muscle was analyzed measuring
the sarcomere length at three different zones (dorsal, central and ventral). Muscular fibers showed
evident striation, elongated nuclei with finely granular nuclear chromatin, and abundant loose
connective tissue with amorphous substance, melanin, collagen fibers and haemocytes. The closer
muscle presents different kind of fibers, being predominant the slower fibers. The relationship between
the structure and function of the muscle and the possible correspondence between the mechanical
power produced by the closer muscle and the sarcomere length of the fibers is under discussion.
Keywords: Brachyura, claw, crab, Crustacea, histology, sarcomere.Brachyura, claw, crab, Crustacea, histology, sarcomere.