The claw closer muscle of two estuarine crab species, <i>Cyrtograpsus angulatus</i> and <i>Neohelice granulata</i> (Grapsoidea, Varunidae): histochemical fibre type composition

Longo, María Victoria; Díaz, Alcira Ofélia

doi:10.1111/j.1463-6395.2011.00548.x

Cited by 5 publications

(11 citation statements)

References 31 publications

(79 reference statements)

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“…In this study the claw closer muscle fibers of N. granulata and C. angulatus were classified into different groups according to their histochemical profile: I, of moderate contraction and low glycolytic and oxidative capacity; IV, rapid fibers, oxidative and glycolytic; II and III, of moderate contraction with a wide spectrum of glycolytic and oxidative properties. This is in accordance with Longo & Díaz (2013a) for N. granulata and C. angulatus acclimated to osmoconforming conditions (35 psu = control condition): fiber type IV would be involved in the continuous claw opening and closing movements of N. granulata during excavation; the slower and less resistant to fatigue fibers (types II and III) would be used by both crab species during exhibition, agonistic encounters and courtship.…”

Section: Discussionsupporting

confidence: 83%

“…Every fiber was counted and allocated to one of the four fiber type categories. The relative proportion (%) of each muscle fiber type was calculated and the fiber diameters were measured according to Longo & Díaz (2013a). These values were used to calculate the percentage of relative area for types I, II, III and IV fibers (Longo & Díaz, 2013a).…”

Section: Methodsmentioning

confidence: 99%

“…In a previous study Longo & Díaz (2013a) analyzed the histochemical composition of the claw closer muscle fibers of C. angulatus and N. granulata in the osmoconformation condition (35 psu = control condition). Among species a variation in the fiber type proportions was observed, which would be related to different habitats and feeding ways (Longo & Díaz, 2013a).…”

Section: Introductionmentioning

confidence: 99%

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Influence of Reduced Salinity on the Histochemical Fiber Type Composition of the Claw Closer Muscle of Two Estuarine Crab Species, Cyrtograpsus angulatus and Neohelice granulata (Decapoda: Varunidae)

Longo

Díaz

2017

Int. J. Morphol.

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The estuarine crustaceans are exposed to frequent and abrupt environmental salinity changes that involve adjustments at different levels in muscle tissue. The histochemical composition of fiber types of the claw closer muscle of Cyrtograpsus angulatus and Neohelice granulata (Dana, 1851) under hyper regulatory conditions was analyzed. Cryosections of the muscle were treated with myosin-adenosine triphosphatase (m-ATPase), succinic dehydrogenase (SDH), periodic acid Schiff (PAS) and Sudan Black B. The mean diameters, the relative area and the proportion of each muscle fiber type were calculated. Types I and IV would belong to 'extreme' groups, whereas types II and III would be considered 'intermediate'. Type I fibers were large and exhibited a weak reaction to all techniques; type IV fibers were small and reacted strongly to histochemical tests. Types II and III prevailed in C. angulatus whereas type II predominated in N. granulata. Type IV fibers were absent in C. angulatus and scarce in N. granulata. The claw closer muscle of N. granulata and C. angulatus exhibited differential responses under reduced salinity at a histochemical level. Therefore, the existence of different adjustment mechanisms facing salinity stress is suggested.

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Section: Discussionsupporting

confidence: 83%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Influence of Reduced Salinity on the Histochemical Fiber Type Composition of the Claw Closer Muscle of Two Estuarine Crab Species, Cyrtograpsus angulatus and Neohelice granulata (Decapoda: Varunidae)

Longo

Díaz

2017

Int. J. Morphol.

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“…The muscle is the main storage organ of protein and glycogen (Longo & Díaz, 2011;Pinoni, Iribarne, & López Mañanes, 2011;Simon, Fitzgibbon, Battison, Carter, & Battaglene, 2015), while hepatopancreas stores lipids and glycogen (Calvo et al, 2013;Ong & Johnston, 2006;Watts, McGill, Albalat, & Neil, 2014). The muscle is the main storage organ of protein and glycogen (Longo & Díaz, 2011;Pinoni, Iribarne, & López Mañanes, 2011;Simon, Fitzgibbon, Battison, Carter, & Battaglene, 2015), while hepatopancreas stores lipids and glycogen (Calvo et al, 2013;Ong & Johnston, 2006;Watts, McGill, Albalat, & Neil, 2014).…”

Section: Introductionmentioning

confidence: 99%

“…When feed is available, crustaceans can stock energetic reserves in specific organs such as muscle and hepatopancreas. The muscle is the main storage organ of protein and glycogen (Longo & Díaz, 2011;Pinoni, Iribarne, & López Mañanes, 2011;Simon, Fitzgibbon, Battison, Carter, & Battaglene, 2015), while hepatopancreas stores lipids and glycogen (Calvo et al, 2013;Ong & Johnston, 2006;Watts, McGill, Albalat, & Neil, 2014).…”

Section: Introductionmentioning

confidence: 99%

Mobilization of energetic reserves during starvation in juveniles of different size of the redclaw crayfishCherax quadricarinatus

et al. 2017

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Mobilization patterns of energy reserves during starvation are highly variable among crustaceans, and understanding this process is useful to satisfy the nutritional require ments of cultured organisms. The aim of this study was to elucidate the mobilization patterns on early and advanced juveniles-first free stage and one gram juveniles-of redclaw crayfish (Cherax quadricarinatus). A biochemical approach was used to analyse the organic carbon, total proteins, lipids and glycogen levels of the entire animal, and a histochemical approach was adopted to identify location of metabolites in the hepatopancreas and abdominal muscle. While starvation did not affect early juvenile protein levels, it showed a significant decrease in advanced juveniles. Histochemical analysis showed that lipid storage of hepatopancreas R cells was depleted near point of no return (PNR) and recovered after feeding. Glycogen storage was localized in the F cells of the hepatopancreas, and among muscle fibres of the abdomen, where after feeding, a pronounced accumulation was observed. Early and advanced juveniles of redclaw crayfish showed different patterns of consumption mainly related to the pro tein level, which was the most abundant reserve in advanced juveniles and the most consumed during starvation. Hepatopancreas R cells were confirmed as the principal lipid storage, whereas the abdominal muscle was the main glycogen storage. In crusta cean aquaculture, the understanding of resistance to temporary feed deprivation is relevant to achieve an adequate feeding management, thereby avoiding the overfeed ing and diminishing operating costs. K E Y W O R D Scrustacean aquaculture, glycogen, hepatopancreas, histochemistry, lipids, muscle, point of no return | 953 CALVO et AL.

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Functional morphology and fiber types of the masseter muscles of two caviomorph rodents with contrasting lifestyles, Ctenomys talarum (Ctenomyidae) and Cavia aperea (Caviidae)

Longo

Díaz

Vassallo

et al. 2021

Journal of Morphology

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The aim of this work is the analysis of histochemical and morphometric properties of the masseter muscles of Ctenomys talarum and Cavia aperea. The former belongs to a subterranean rodent clade, Ctenomyidae, which has evolved a robust masticatory apparatus adapted to chisel‐tooth digging and processing of abrasive grasses; C. aperea belongs to the family Caviidae, with relatively graceful jaws and mandibular musculatures, consistent with less mechanically challenging diets. Adult males were captured, immediately transported to the laboratory, and euthanized in a CO2 chamber. The musculus masseter superficialis and musculus masseter profundus on the left side of the animals were used to analyze the histochemical composition of the fiber types treated with myosin adenosine triphosphatase, succinate dehydrogenase and periodic acid Schiff. The mean fiber diameters, relative areas, and frequencies of each muscle fiber type were calculated. The mm. masseter superficialis and masseter profundus on the right side were used to measure the physiological cross‐sectional area (PCSA). Based on this measurement, the internal force (F) was estimated. In the m. masseter profundus of both species and in the m. masseter superficialis of C. aperea intermediate fast oxidative‐glycolytic fibers (FOGi) predominated. In the mm. masseter superficialis and masseter profundus of C. talarum the relative area of fast glycolytic (FG) fibers was greater than that of the muscles of C. aperea, whose main muscle fiber component is FOGi fibers. When corrected for body mass differences, PCSA was higher for the mm. masseter superficialis of C. talarum. This and the larger relative area of FG fibers, probably contributes to the exertion of large bite forces in C. talarum, as measured in previous studies.

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The claw closer muscle of two estuarine crab species, Cyrtograpsus angulatus and Neohelice granulata (Grapsoidea, Varunidae): histochemical fibre type composition

Cited by 5 publications

References 31 publications

Influence of Reduced Salinity on the Histochemical Fiber Type Composition of the Claw Closer Muscle of Two Estuarine Crab Species, Cyrtograpsus angulatus and Neohelice granulata (Decapoda: Varunidae)

Influence of Reduced Salinity on the Histochemical Fiber Type Composition of the Claw Closer Muscle of Two Estuarine Crab Species, Cyrtograpsus angulatus and Neohelice granulata (Decapoda: Varunidae)

Mobilization of energetic reserves during starvation in juveniles of different size of the redclaw crayfishCherax quadricarinatus

Functional morphology and fiber types of the masseter muscles of two caviomorph rodents with contrasting lifestyles, Ctenomys talarum (Ctenomyidae) and Cavia aperea (Caviidae)

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