Myomeres


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Myomeres

 

in lancelets, vertebrate animals, and man, segments of thetruncal musculature that are arranged in succession along the longitudinal axis of the body. They develop from myotomes. In the Amniota, myomeres are usually present only in the embryonic stage. The longitudinal muscle fibers of every myomere are attached in front and in back of the myocommata. In flsh and amphibians, myomeres are separated by a horizontal myocomma into dorsal and ventral sections.

References in periodicals archive ?
Myosepta: Sheaths of connective tissue separating myomeres. Transmits contracting forces of muscle fibers between myomeres.
Nevertheless, fish stock lipid in adipose tissue located around the digestive tract, under the skin, the meat between the myomeres and in the myomeres (Fauconneau, Corraze, Lebail, & Vernier, 1991).
holbrooki, the missing area of the tail (comprising fins and myomeres) was estimated to 10% by comparing it to the outline of a complete tail traced from a photograph onto an overhead transparency.
costatus larvae had 38-43 myomeres, whereas P argenteus had 42-43, and button of arches became evident (Fig.
In most taut-skinned fishes, the body core musculature is made up of segmented and serially arranged, cone-shaped myomeres divided into epaxial and hypaxial muscle groups by a horizontal septum (Liem et al., 2001).
Pigmentation patterns, counts of myomeres, head spines, and fin rays, and various measurements were recorded.
Trunk myomeres were counted from the myomere partly containing the most posterior gill opening to the last myomere with posterior angle positioned above the cloaca (Hubbs & Trautman 1937).
Pigmentation of larvae after hatch consisted of melanophores concentrated on the ventral surface of the yolk sac, as well as posterior to the anus both on ventral and dorsal areas along the myomeres. Protolarvae had 22-23 post anal myomeres and 23-24 preanal myomeres.
The distribution is not symmetrical between left and right sides; they are separated by 1 to 4 myomeres in dorsal view.
A high-count morph (79-86 total myomeres) which he identified as Elops saurus and a low-count morph (74-78 total myomeres) which he felt probably represented an undescribed species.
Line of pigment on ventral body margin from 4th to 6th myomeres posterior to anus to penultimate posterior myomere.