Analysis of the sternotrachealis muscle fibers in some anseriformes: Histochemistry and sex differences

Lalatta-Costerbosa, Giovanna; Scapolo, P. A.; Barazzoni, Anna Maria; Petrosino, G.; Clavenzani, Paolo; Lucchi, Maria Luisa; Bortolami, R.

doi:10.1002/aja.1001890407

Cited by 8 publications

(7 citation statements)

References 17 publications

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“…Applying the protocol proposed in the present study to bird muscles with different fiber type compositions, 01-18.75 11.55-22.46 we have differentiated four fiber types, which are basically in agreement with the classification proposed by Barnard et al (1982) and recently applied in some studies (Grove et al, 1989;Lalatta-Costerbosa et al, 1990).…”

Section: Discussionsupporting

confidence: 91%

Innervation distribution pattern, nerve ending structure, and fiber types in pigeon skeletal muscle

et al. 1993

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Four fiber types have been characterized in different pigeon skeletal muscles according to their innervation pattern (nerve ending structure and innervation distribution) and histochemical properties (SDH and m-ATPase activities). All fast fibers, types IIA and IIB, present aggregated distribution of their nerve endings with "en plaque" structures and very low innervation frequencies. The two kinds of slow fibers recognized are multiple innervated and present higher innervation frequencies. However, type I fibers have nerve terminals in small knobs with uniform localization, whereas type III fibers present "en grappe" nerve endings, which tend to be randomly distributed. Fiber type composition of skeletal muscles has been found closely related to their biomechanical function. Fast fibers are predominant in muscles with an active role in locomotive movements, whereas slow fibers are mainly or exclusively located in postural muscles.

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Section: Discussionsupporting

confidence: 91%

Innervation distribution pattern, nerve ending structure, and fiber types in pigeon skeletal muscle

et al. 1993

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“…The male syrinx is larger in many species (Häcker 1900;Wade and Buhlman 2000;Veney and Wade 2004). Furthermore, sexual differences occur in both size of the vocal apparatus and vocalizations in various non-passerines, including Anseriformes (Warner 1971;Lockner and Youngren 1976;Lalatta-Costerbosa et al 1990), Columbiformes (Ballintijn and Ten Cate 1997), Galliformes (Bottino et al 2006); Ralliformes (Gullion 1950), and Turniciformes (Balthazart et al 1983).…”

Section: Introductionmentioning

confidence: 97%

Syringeal anatomy and allometry in murres (Alcidae: Uria)

et al. 2008

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Species and sexual differences in vocalizations and the vocal tract are widespread. We studied the vocal tract of Common (Uria aalge) and Thick-billed (U. lomvia) Murres. We predicted anatomical or allometric differences in adults between species and sexes due to vocal differences related to social behavior (Common Murres nest at higher densities; males are the more aggressive sex, etc.). The vocal tract was anatomically simple and similar between species and sexes. The trachea was mainly cartilage, but the posteriormost 4-6 tracheal rings were calcified and fused as the tympanum, as part of the syrinx. The syrinx included the (unfused) first bronchial semirings, which were enlarged and calcified beneath the insertion of M. tracheolateralis. Weak bilateral asymmetry (right side larger) occurred in widths of M. tracheolateralis and M. sternotrachealis. The trachea was *10% longer in Common Murres; the tympanum and M. sternotrachealis width were relatively larger in Thick-billed Murres. Vocaltract morphology and size did not differ between the sexes in either species. In allometric analyses on adults, isometry characterized (1) tympanum size in relation to head + bill length, and to humerus length (respectively), in Thickbilled Murres, and (2) M. sternotrachealis width in relation to tarsometatarsal length in both species. Comparative field studies on species and sexes are needed to clarify the functional significance of our findings in relation to vocalization.

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“…This raises the question of whether superfast fibres are already present in extrinsic muscles or whether they are a specialization of intrinsic muscles. The results of muscle fibre characterization of sternotracheal muscles in ducks indicate that they possess populations of slow (type I) fibres (Lalatta-Costerbosa et al, 1990) and no superfast fibres, although neither antibody characterization nor physiological measurements were performed. The available data suggest the latter interpretation of a modulation of intrinsic muscles is correct, but more research is needed to clarify this issue.…”

Section: Fibre Type Composition Of Muscles and Functional Specializationmentioning

confidence: 99%

“…Percentages of respective fibre types vary between species and clear sex differences exist. In general, however, the muscles predominantly contain fast fibres, although slow fibres are also present (Lalatta-Costerbosa et al, 1990). In addition, ultrastructural evidence indicates that extrinsic syringeal muscles in oilbirds (Steatornis caripensis) are composed of slow and fast muscle fibres (Suthers and Hector, 1985), and that the extrinsic muscles of the dove most likely contain several different fibre types (Elemans, 2004).…”

Section: Introductionmentioning

confidence: 99%

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Fibre architecture and song activation rates of syringeal muscles are not lateralized in the European starling

Uchida

Meyers

Cooper

et al. 2010

Journal of Experimental Biology

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SUMMARYThe songbird vocal organ, the syrinx, is composed of two sound generators, which are independently controlled by sets of two extrinsic and four intrinsic muscles. These muscles rank among the fastest vertebrate muscles, but the molecular and morphological foundations of this rapid physiological performance are unknown. Here we show that the four intrinsic muscles in the syrinx of male European starlings (Sturnus vulgaris) are composed of fast oxidative and superfast fibres. Dorsal and ventral tracheobronchialis muscles contain slightly more superfast fibres relative to the number of fast oxidative fibres than dorsal and ventral syringealis muscles. This morphological difference is not reflected in the highest, burst-like activation rate of the two muscle groups during song as assessed with electromyographic recordings. No difference in fibre type ratio was found between the corresponding muscles of the left and right sound generators. Airflow and electromyographic measurements during song indicate that maximal activation rate and speed of airflow regulation do not differ between the two sound sources. Whereas the potential for high-speed muscular control exists on both sides, the two sound generators are used differentially for modulation of acoustic parameters. These results show that large numbers of superfast fibre types are present in intrinsic syringeal muscles of a songbird, providing further confirmation of rapid contraction kinetics. However, syringeal muscles are composed of two fibre types which raises questions about the neuromuscular control of this heterogeneous muscle architecture.

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Analysis of the sternotrachealis muscle fibers in some anseriformes: Histochemistry and sex differences

Cited by 8 publications

References 17 publications

Innervation distribution pattern, nerve ending structure, and fiber types in pigeon skeletal muscle

Innervation distribution pattern, nerve ending structure, and fiber types in pigeon skeletal muscle

Syringeal anatomy and allometry in murres (Alcidae: Uria)

Fibre architecture and song activation rates of syringeal muscles are not lateralized in the European starling

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