Functional Anatomy of the Forelimb Muscles of the Ocelot (Leopardus pardalis)

Julik, Emily; Zack, Shawn P.; Adrian, Brent; Maredia, Saaiqa; Parsa, Arman; Poole, Meifawn; Starbuck, Adam; Fisher, Rebecca E.

doi:10.1007/s10914-012-9191-4

Cited by 44 publications

(195 citation statements)

References 43 publications

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“…data) and G. cuja (n = 3) (ERCOLI et al 2014); in the procyonid Procyon lotor (Linnaeus, 1758) (n = 2) (S.A. FEENEY, unpubl. data); and in the felids Puma concolor (Linnaeus, 1771) (n = 2) (CONCHA et al 2004), Acinonyx jubatus (Schreber, 1775) (n = 8) (HUDSON et al 2011), Leopardus pardalis (Linnaeus, 1758) (n = 1) (JULIK et al 2012) and Panthera onca (Linnaeus, 1758) (n = 2) (SÁNCHEZ et al 2013).…”

Section: Discussionmentioning

confidence: 99%

“…Moreover, the muscular arrangement is rarely taken into account. Knowledge about muscular disposition associated with some biomechanical findings can better elucidate the function of some important bone structures that would otherwise be neglected (JULIK et al 2012). Several studies in this field have biases because of misunderstanding of the muscular topography.…”

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confidence: 99%

“…There are no reports in the literature, as far as we know, about the occurrence of the brachioradialis muscle in wild carnivorans, although there are studies with variable contexts containing references to the presence of the muscle in Carnivora (DAVIS 1964, ARLAMOWSKA-PALIDER 1970, JULIK et al 2012, SÁNCHEZ et al 2013, ERCOLI et al 2014.…”

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confidence: 99%

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Occurrence and morphometrics of the brachioradialis muscle in wild carnivorans (Carnivora: Caniformia, Feliformia)

Souza¹,

Santos²,

Nogueira³

et al. 2015

Zoologia (Curitiba)

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ABSTRACT. The brachioradialis is an important muscle that acts in the external rotation of the forearm (supination). However, its occurrence is controversial and little studied in the order Carnivora. Thus, this study investigates the occurrence and anatomo-functional arrangement of this muscle in wild carnivorans species. Fifty-eight thoracic limbs of specimens from species of Canidae, Procyonidae, Mustelidae and Felidae were dissected. Measurements of the length of the muscle (ML), the length of the forearm (FL), latero-medial width of the muscle (MW) and the lateral-medial diameter of the forearm (FD) were obtained to establish the ratios MW/FD and ML/FL in order to investigate the relative proportion of the muscle in relation to the forearm of each species. The brachioradialis muscle was identified in all species, although it was unilaterally or bilaterally absent in some canid individuals. The ratios demonstrated significant differences in the anatomical proportions among the families, with greater functional importance in the mustelids, procyonids, and felids because of a set of elaborate movements in the thoracic limb of representatives of these families when compared to canids. KEY WORDS. Comparative anatomy; forelimb; myology.

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Section: Discussionmentioning

confidence: 99%

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confidence: 99%

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Occurrence and morphometrics of the brachioradialis muscle in wild carnivorans (Carnivora: Caniformia, Feliformia)

Souza¹,

Santos²,

Nogueira³

et al. 2015

Zoologia (Curitiba)

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“…For example, the rhomboideus capitis (and profundus) is commonly absent (Fisher et al, 2009), which may indicate less ability to protract the limb and stabilize the scapula cranially. Climbers invest in large pectoralis muscles as do scratch-diggers, but they may show relatively greater division of the pectoralis superficialis and profundus (Harrison, 1882;Julik et al, 2012) for strong adduction and increased grasping control of the forelimb during climbing. A broad caudal origin of the LAT is also generally similar between climbers and scratch-diggers, indicating that long fascicles for shortening and power output are important to both habits.…”

Section: Comparative and Functional Insightsmentioning

confidence: 99%

Forelimb muscle architecture and myosin isoform composition in the groundhog (Marmota monax)

Rupert

Rose

Organ

et al. 2014

Journal of Experimental Biology

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Scratch-digging mammals are commonly described as having large, powerful forelimb muscles for applying high force to excavate earth, yet studies quantifying the architectural properties of the musculature are largely unavailable. To further test hypotheses about traits that represent specializations for scratch-digging, we quantified muscle architectural properties and myosin expression in the forelimb of the groundhog (Marmota monax), a digger that constructs semi-complex burrows. Architectural properties measured were muscle moment arm, muscle mass (MM), belly length (ML), fascicle length (l F ), pennation angle and physiological cross-sectional area (PCSA), and these metrics were used to estimate maximum isometric force, joint torque and power. Myosin heavy chain (MHC) isoform composition was determined in selected forelimb muscles by SDS-PAGE and densitometry analysis. Groundhogs have large limb retractors and elbow extensors that are capable of applying moderately high torque at the shoulder and elbow joints, respectively. Most of these muscles (e.g. latissimus dorsi and pectoralis superficialis) have high l F /ML ratios, indicating substantial shortening ability and moderate power. The unipennate triceps brachii long head has the largest PCSA and is capable of the highest joint torque at both the shoulder and elbow joints. The carpal and digital flexors show greater pennation and shorter fascicle lengths than the limb retractors and elbow extensors, resulting in higher PCSA/MM ratios and force production capacity. Moreover, the digital flexors have the capacity for both appreciable fascicle shortening and force production, indicating high muscle work potential. Overall, the forelimb musculature of the groundhog is capable of relatively low sustained force and power, and these properties are consistent with the findings of a predominant expression of the MHC-2A isoform. Aside from the apparent modifications to the digital flexors, the collective muscle properties observed are consistent with its behavioral classification as a lessspecialized burrower and these may be more representative of traits common to numerous rodents with burrowing habits or mammals with some fossorial ability.

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“…La drástica disminución de estos animales, nos obliga a generar conocimiento sobre la biología del león africano y el aspecto anatómico no escapa a esta situación, ya que en particular el estudio de la musculatura de la familia de los felinos, esta pobremente documentada (Barone, 1967;Concha et al, 2004;Julik et al, 2012), y en los zoológicos frecuentemente se realizan diferentes procedimientos médicos, cada vez más complejos, siendo común la cirugía traumatológica a nivel de los miembros torácicos y pélvicos (Mudrovici, 2006).…”

Section: Introductionunclassified

Descripción Anatómica de la Musculatura Intrínseca del Miembro Torácico de León (Panthera leo)

et al. 2017

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VARGAS, J. F.; QUINTANA, O. ; BARRAZA, C. & OLIVARES, R. Descripción anatómica de la musculatura intrínseca del miembro torácico de león (Panthera leo). Int. J. Morphol., 35(3):1154-1160, 2017. RESUMEN:El presente estudio tuvo como objetivo el describir la musculatura intrínseca del miembro torácico del león africano (Panthera leo). Para tal efecto se utilizó un ejemplar hembra, donado por el Zoológico Metropolitano de Santiago-Chile, fijado y conservado. La disección se llevó a cabo, de proximal a distal, considerando las cuatro regiones topográficas de dicho miembro: Cintura Escapular, Brazo, Antebrazo y Mano. Se discuten y comparan los hallazgos anatómicos observados, con lo descrito para el gato domés-tico y trabajos realizados por otros autores en Ocelote (Leopardus pardalis), Puma (Puma concolor) y en la propia especie en estudio. La finalidad del presente trabajo fue aportar al conocimiento de la anatomía de especies exóticas, con proyección médico quirúrgica.PALABRAS CLAVES: Panthera leo, miembro torácico, músculos. INTRODUCCIÓNEl león africano (Panthera leo), pertenece a la familia felidae del orden carnívora, una de las cuatro especies del género Panthera; es el segundo felino más grande después del tigre y puede alcanzar un peso entre 150-250 kg. Habita normalmente en África y Asia, pero en Chile se encuentra únicamente en estado de cautiverio.

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Functional Anatomy of the Forelimb Muscles of the Ocelot (Leopardus pardalis)

Cited by 44 publications

References 43 publications

Occurrence and morphometrics of the brachioradialis muscle in wild carnivorans (Carnivora: Caniformia, Feliformia)

Occurrence and morphometrics of the brachioradialis muscle in wild carnivorans (Carnivora: Caniformia, Feliformia)

Forelimb muscle architecture and myosin isoform composition in the groundhog (Marmota monax)

Descripción Anatómica de la Musculatura Intrínseca del Miembro Torácico de León (Panthera leo)

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