Fig. 1
From: Inferring muscular ground patterns in Bivalvia: Myogenesis in the scallop Nodipecten nodosus
Myoanatomy of Nodipecten nodosus veliger larvae. Anterior to the top in all images, ventral to the right in (a-d). Scale bars: 20 μm. a Specimen observed by light microscopy using differential interference contrast. Lateral view. b Same image from (a) combined with confocal image produced by phalloidin staining to visualize the relative position of larval muscle systems. c Confocal micrograph of larval musculature; arrow points to smooth muscles in the median region of the digestive tract. Lateral view. d 3D reconstruction of veliger musculature showing anterior adductor, ventral larval retractors, and velum retractors. Lateral view. e Detail of a 3D reconstruction of the anterior adductor of a veliger larva with their smooth and striated units. Dorsal view. Abbreviations: aa, anterior adductor; hi, hinge; lr, larval retractors; sh, shell; sm, smooth unit; so, stomach; st, striated unit; ve, velum