Laterality in syrinx muscle morphology of the Japanese quail (Coturnix japonica).
Laterality in syrinx muscle morphology of the Japanese quail (Coturnix japonica).
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日本鹌鹑（Coturnix japonica）鸣管肌肉形态的侧向性。
DOI：
10.1016/j.physbeh.2006.12.007
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发表时间：
2007
影响因子：
2.9
通讯作者：
Wade,Juli
中科院分区：
文献类型：
--
作者：
Burke,MatthewR;Adkins-Regan,Elizabeth;Wade,Juli
在日本鹌鹑中，通常只有雄性鸣，但用睾酮（T）治疗成年雌性有助于行为。胸气管肌被认为在吸气和/或呼气期间调节气管的长度，并且在发声期间控制发声器官（管）的软骨的刚度。这些肌肉在男性中比女性更重，并且T增加了女性中的肌肉质量[Balthazart J，Schumacher M，J.M.日本鹌鹑的性别差异：行为、形态和睾丸激素的细胞内代谢。Gen Comp Endocrinol 1983; 51：191-207.，Schumacher M，Balthazart J.睾酮及其代谢物对雄性和雌性日本鹌鹑性行为和形态的影响。Physiol Behav 1983; 30：335-339.]为了更详细地研究T在形态学和潜在影响方面的性别差异，我们研究了雄性、雌性和T处理的雌性鹌鹑瘘管的几个组成部分。未检测到总体气管尺寸、气管腔尺寸、软骨数量、总体肌肉体积或横截肌肉面积的组效应。然而，由于纤维数量增加，右侧肌肉的面积和估计体积大于左侧。不同群体之间的相似性表明，如果胸气管肌对啼叫至关重要，那么雌性的形态就足够了，行为的性别差异还有另一个来源。相比之下，这些肌肉可能不像以前假设的那样发挥重要作用。如果右侧纤维数量的增加具有功能性后果，那么它可能反映了两性之间的相似之处，例如它们各自产生的发声中的共同作用-雄性的乌鸦和雌性的蟋蟀叫声。
In the Japanese quail, normally only males crow, but treatment of adult females with testosterone (T) facilitates the behavior. The sternotrachealis muscles are thought to adjust the length of the trachea during inspiration and/or expiration and control rigidity of the cartilages of the vocal organ (syrinx) during phonation. These muscles are heavier in males than females, and T increases their mass in females [Balthazart J, Schumacher M, Otttinger MA. Sexual differences in the japanese quail: Behavior, morphology, and intracellular metabolism of testosterone. Gen Comp Endocrinol 1983; 51:191–207., Schumacher M, Balthazart J. The effects of testosterone and its metabolites on sexual behavior and morphology in male and female Japanese quail. Physiol Behav 1983; 30:335–339.]. To investigate sex differences in morphology and potential effects of T in more detail, we examined several components of male, female, and T-treated female quail syrinx. No group effects were detected on overall tracheal size, size of the tracheal lumen, quantity of cartilage, overall muscle volume, or cross-sectional muscle area. However, the area and estimated volume of the muscles were greater on the right than left, due to increased fiber number. The similarity across groups suggests that if the sternotrachealis muscles are critical for crowing, morphology in females is sufficient, and the sex difference in behavior has another source. In contrast, these muscles may not play as large a role as previously hypothesized. If the increased number of fibers on the right has a functional consequence, it likely reflects one similar in the two sexes, for example a common role in the vocalizations they each produce — the male's crow and the female's cricket call.