Pectoral fins of Micropogonias furnieri: a histochemical and ultrastructural study

Devincenti, C. V.; Díaz, Alcira Ofélia; Garcı́a, Agustina; Goldemberg, Adriana L.

doi:10.1007/s10695-008-9216-3

Cited by 8 publications

(12 citation statements)

References 21 publications

(30 reference statements)

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“…Even though the distribution of the fiber types was very conserved in all the species, there was a consistent variation of the proportion of the different zones from the proximal to the distal ends of the muscle . A similar zonation has also been found in Antarctic nototheniods (Walesby and Johnston 1980;Davison and MacDonald 1985;Harrison et al 1987) and in other teleosts (Patterson et al 2007;Devincenti et al 2008). While slow muscle fibers are abundant in notothenioids, leaving an external marginal location to the fast fibers, the opposite situation is observed in the other teleosts studied.…”

Section: Pectoral Fin Musclessupporting

confidence: 80%

Fish muscle: the exceptional case of notothenioids

Fernández

Calvo

2008

Fish Physiol Biochem

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Fish skeletal muscle is an excellent model for studying muscle structure and function, since it has a very well-structured arrangement with different fiber types segregated in the axial and pectoral fin muscles. The morphological and physiological characteristics of the different muscle fiber types have been studied in several teleost species. In fish muscle, fiber number and size varies with the species considered, limiting fish maximum final length due to constraints in metabolites and oxygen diffusion. In this work, we analyze some special characteristics of the skeletal muscle of the suborder Notothenioidei. They experienced an impressive radiation inside Antarctic waters, a stable and cold environment that could account for some of their special characteristics. The number of muscle fibers is very low, 12,700-164,000, in comparison to 550,000-1,200,000 in Salmo salar of similar sizes. The size of the fibers is very large, reaching 600 microm in diameter, while for example Salmo salar of similar sizes have fibers of 220 microm maximum diameter. Evolutionary adjustment in cell cycle length for working at low temperature has been shown in Harpagifer antarcticus (111 h at 0 degrees C), when compared to the closely related sub-Antarctic species Harpagifer bispinis (150 h at 5 degrees C). Maximum muscle fiber number decreases towards the more derived notothenioids, a trend that is more related to phylogeny than to geographical distribution (and hence water temperature), with values as low as 3,600 in Harpagifer bispinis. Mitochondria volume density in slow muscles of notothenioids is very high (reaching 0.56) and since maximal rates of substrate oxidation by mitochondria is not enhanced, at least in demersal notothenioids, volume density is the only means of overcoming thermal constraints on oxidative capacity. In brief, some characteristics of the muscles of notothenioids have an apparent phylogenetic component while others seem to be adaptations to low temperature.

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Section: Pectoral Fin Musclessupporting

confidence: 80%

Fish muscle: the exceptional case of notothenioids

Fernández

Calvo

2008

Fish Physiol Biochem

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“…We found three zones in the pectoral musculature: superficial, medial and deep, with red, pink and white fibres, respectively (Devincenti et al . ). Even though the histochemical and ultrastructural studies on myotomal musculature of C. guatucupa have been carried out (Devincenti et al .…”

Section: Introductionmentioning

confidence: 97%

Morphological and histochemical characterization of the pectoral fin muscle of the stripped weakfish, Cynoscion guatucupa

et al. 2014

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The fibres of superficial and deep abductor muscles of the pectoral fins of the stripped weakfish, Cynoscion guatucupa have been studied using histochemical techniques: succinic dehydrogenase (SDH) for mitochondria, periodic acid–Schiff (PAS) for glycogen, myosin‐adenosintriphosphatase (mATPase) to identify different fibre types based on the contraction speed and modified ATPase to identify capillaries. The fibre diameters were measured, and the capillaries of the main fibre types – red, pink and white— were counted. The two muscles showed both macroscopically and microscopically two well‐differentiated zones with predominant white fibres. The area of insertion of muscles into the fin rays had red, pink and white fibres. The origin zone of the muscle into the bone was composed by white fibres only. Both zones of white muscle evidenced a mosaic of small, medium and large polygonal white fibres. Red, pink and white muscles showed a wide histochemical diversity of fibre subtypes. The area per peripheral capillary increased from the red to the white muscles. Due to the predominance of white fibres, the pectoral fins of C. guatucupa were mainly involved in rapid movements to stop/discontinue and stabilize the body during swimming.

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“…The distribution of capillaries in fibers of the adductor pectoral fin muscle of M. furnieri was coincident with that of the teleost fish musculature (mOsse 1978, Devincenti et al 2000b). The two white muscle zones presented differences in relation to the number of capillaries supplying them, decreasing from the proximal to the distal region.…”

Section: 10 11mentioning

confidence: 58%

The adductor pectoral fin muscle of Micropogonias furnieri (Perciformes: Sciaenidae): a morphological and histochemical study

Hernández¹,

Longo²,

Devincenti³

et al. 2016

Zoologia (Curitiba)

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ABSTRACT. The adductor pectoral fin muscle in post-spawning females of the white croaker Micropogonias furnieri (Desmarest, 1823) is described from a morphological, histochemical and morphometric perspectives. A description of the morphological characteristics was conducted after dissections in different layers, down to the deep layer. Five muscles were found: superficial, medial, radial and deep adductors, and dorsal arrector. Their fibers were studied after applying histochemical techniques: succinic dehydrogenase (SDH) to reveal mitochondria, periodic acid-Schiff (PAS) for glycogen, Sudan black for lipids, myosin adenosinetriphosphatase (mATPase) to reveal the types of fibers, and modified mATPase to evidence the capillaries. Fiber diameters were measured and the number of capillaries was counted. Fiber subtypes named small, medium and large were found within red, pink and white fibers, the latter prevailing. Staining homogeneity was observed in white fibers after alkaline pre-incubations. The number of capillaries decreased from red to white fibers. Due to the prevalence of white fibers, the adductor muscle of the pectoral fins appears to be capable of rapid and discontinuous movements, which are important to body stabilization during subcarangiform swimming. The homogenous staining of white fibers observed in this research corresponds to the post-spawning gonad stage studied.

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Pectoral fins of Micropogonias furnieri: a histochemical and ultrastructural study

Cited by 8 publications

References 21 publications

Fish muscle: the exceptional case of notothenioids

Fish muscle: the exceptional case of notothenioids

Morphological and histochemical characterization of the pectoral fin muscle of the stripped weakfish, Cynoscion guatucupa

The adductor pectoral fin muscle of Micropogonias furnieri (Perciformes: Sciaenidae): a morphological and histochemical study

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