Identificador persistente para citar o vincular este elemento: http://hdl.handle.net/10553/47113
Título: The larval development of lateral musculature in gilthead sea bream Sparus aurata and sea bass Dicentrarchus labrax
Autores/as: Ramírez Zarzosa, Gregorio José
Gil Cano,Francisco 
Latorre Reviriego, Rafael Manuel
Ortega García, Aurelio
García Alcázar, Alicia
Abellán Martínez, Emilia
Vázquez Autón,José Maria 
López Albors, Octavio Miguel
Arencibia Espinosa, Alberto 
Moreno Medina, Francisco
Clasificación UNESCO: 2401 Biología animal (zoología)
240101 Anatomía animal
310901 Anatomía
240119 Zoología marina
Palabras clave: Fish
Histochemistry
Hyperplasia
Hypertrophy
Muscle growth, et al.
Fecha de publicación: 1995
Editor/a: 0302-766X
Publicación seriada: Cell and Tissue Research 
Resumen: Fibre-type differentiation of the lateral musculature has been studied in Sparus aurata (L.) and Dicentrarchus labrax (L.) during larval development. Histochemical and ultrastructural techniques show two presumptive muscle layers and two germinative zones of presumptive myoblasts. At hatching, myotomal muscle consists of a monolayer of thin undifferentiated cells near the skin (first germinative zone) overlying another mono-layer of small diameter fibres extending hypaxially and epaxially away from the transverse septum. Below this, there is a much thicker, deep layer of fibres, generally large in diameter and polygonal in shape. The presumptive myoblasts are located between these two layers of fibres in the second germinative zone. Initially, the superficial and deep muscle fibres show high and low myosin ATPase activity, respectively. Both layers grow by generating new fibres from the two mentioned germinative zones. At the end of larval life, the superficial layer changes its histochemical profile from high to low myosin ATPase activity and, at the same time, intermediate or pink muscle fibres can be observed by oxidative activity (the NADH-TR reaction). Morphometric analysis shows a significant increase in mean fibre diameter during successive ages, as shown by the Student's t-test (hypertrophic growth). Skewness and kurtosis values of fibre diameters point to the generation of a new fibre population from the germinative zones (hyperplastic growth).
URI: http://hdl.handle.net/10553/47113
ISSN: 0302-766X
DOI: 10.1007/BF00307792
Fuente: Cell and Tissue Research [ISSN 0302-766X], v. 280 (2), p. 217-224
Colección:Artículos
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