德国小蠊若虫咽侧体的性分化及卵巢切除对成虫腺体形态计量学的影响

Sexual differentiation of nymphal corpora allata and the effects of ovariectomy on adult gland morphometrics in Blattella germanica.

作者信息

Chiang A S, Gadot M, Burns E L, Schal C

机构信息

Department of Entomology, Cook College, Rutgers University, New Brunswick, New Jersey 08903.

出版信息

Experientia. 1991 Jan 15;47(1):81-3. doi: 10.1007/BF02041260.

DOI:10.1007/BF02041260

PMID:1999248

Abstract

Changes in the number of corpus allatum (CA) cells were investigated in nymphs and in intact and ovariectomized adult female Blattella germanica. The CA of intact adult females exhibit cyclic changes in volume in relation to juvenile hormone (JH) synthesis, while the CA of ovariectomized females become significantly hypertrophied as a result of a gradual and continuous increase in volume that is independent of JH biosynthesis. In both intact and ovariectomized females changes in JH synthesis and CA volume are not related to total cell number which remains relatively constant. However, adult females have twice as many CA cells as do adult males as a result of a female-specific increase in total cell number late in the last nymphal instar.

摘要

研究了德国小蠊若虫、完整及去卵巢成年雌性个体中咽侧体（CA）细胞数量的变化。完整成年雌性个体的咽侧体在体积上呈现出与保幼激素（JH）合成相关的周期性变化，而去卵巢雌性个体的咽侧体由于体积逐渐持续增加而显著肥大，这种增加与JH生物合成无关。在完整及去卵巢雌性个体中，JH合成和CA体积的变化均与细胞总数无关，细胞总数保持相对恒定。然而，成年雌性个体的CA细胞数量是成年雄性个体的两倍，这是由于在若虫最后一龄后期雌性特异性的细胞总数增加所致。