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Ultrastructure of the salivary gland complex in unfed larvae of Platytrombidium fasciatum (C. L. Koch, 1836) and Camerotrombidium pexatum (C. L. Koch, 1837) (Acariformes: Microtrombidiidae)

Shatrov, A.B.

2004 - Volume: 44 Issue: 3-4 pages: 219-229


Ultrastructure of the salivary glands in the unfed larvae of microtrombidiid mites Platytrombidium fasciatum (C. L. Koch, 1836) and Camerotrombidium pexatum (C. L. Koch, 1837) was examined using transmission electron microcsopy. Two pairs of the large salivary glands termed ventral and dorsal occupy a frontal position in the body cavity and are mostly located on the sides of the mouthparts hidden deep under an arched dorsal shield. The dorsal glands possess an intensive rough endoplasmic reticulum situated predominantly on the periphery of the cells as well as numerous electron dense secretory granules spread throughout the cell volume and concentrated around a large central cavity. The ventral glands lie more anterior than the dorsal ones and contain tightly packed electron lucent secretory granules filled with a flocculent material. Due to the position of the ventral glands, their salivary ducts are directed posteriorly on each side of the body and join with the common ducts originating from ducts of the tubular (coxal) glands. After the fusion with ducts of the dorsal salivary glands, the common ducts open into the postero lateral angles of an atrial (subcheliceral) cavity.

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2004 Shatrov, A.B.
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