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Fig. 1 | BMC Developmental Biology

Fig. 1

From: Insulin signaling mediates previtellogenic development and enhances juvenile hormone-mediated vitellogenesis in a lepidopteran insect, Maruca vitrata

Fig. 1

Ovary structure of M. vitrata females. a Total ovary (OV) structure of 5 days old female. A pair of ovaries is extended from common oviduct (CO) via lateral oviduct (LO). In each of ovariole, oocyte development is subdivided into previtellogenic oocyte, vitellogenic oocyte, and chorionated oocyte under a stereomicroscope. Inset figure shows bursa copulatrix (BC) and ovipositor (OP) near ovaries. b Comparison of oocyte development between germarium and vitellarium. In germarium, oocytes are invisible in distal region. However, they are distinct in the proximal region along development of nurse cell (NC) and follicular epithelium (FE). In vitellarium, oocyte increases with increase of FE area. F-actin filament is specifically recognized by FITC-tagged phalloidin (green) while nucleus is stained with DAPI (blue). Cells are observed under a fluorescence microscope at 200 × magnification

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BMC Developmental Biology

ISSN: 1471-213X

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