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Fig. 3 | Biological Research

Fig. 3

From: Exposure of Apis mellifera (Hymenoptera: Apidae) colonies to imidacloprid impairs larval development, promotes oxidative stress in pupae, and induces changes in the midgut of adult bees

Fig. 3

Photomicrograph of cross-section of A. mellifera larvae after oral exposure to imidacloprid. A-D = commercial formulation IMD. E–H = active ingredient IMD. A, E = larva overview; B,C,F,G = larval midgut; D,H = fat body larval. *Ep = deformed epithelium; Sg = salivary gland; T = tracheola; Mt = Malpighian tubue; Fb = fat body; m = musculature; L = lumen; Tf* = reduced trophocyte; Pm = peritrophic membrane; Dc = digestive cell; v = vacuolized; c = cytoplasm; n = nucles; p = cytoplasmic protrusions; MEp = Malpighian tubule epithelium; MtL = Malpighian tubule lumen; E = oenocytes; Ep = epithelium; b = striated border: Dc* = deformed digestive cells; →  = central nerve cord; ⇒ = musculature loose; \({ + }\) = intercellular spaces. Staining: Hematoxylin–eosin. Scale: A, E = 100 µm; B, C, D, F, G, H = 20 µm

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Biological Research

ISSN: 0717-6287

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