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n.1.(Zool.) One of the plates which in some Crustacea inclose a cavity wherein the eggs are hatched.
References in periodicals archive ?
In the Chinese female, the body is more nearly circular; the maxilliped's palp does not articulate, and its spur is much reduced; the first oostegite has a slightly more slender and longer posterolateral point, which is setose along its lateral margin; the posterior pereomeres bear tergal plates distinctly separated from the segments; and the lateral plates of the pleomeres are quite sharply pointed.
Head deeply embedded in pereon, its anterior margin overreached by second oostegites.
Ovarian control of oostegite formation in the terrestrial isopod, Armadillidium vulgare (Malacostraca, Crustacea).
Based on the development of the oostegites (brood plates) and male copulatory stylet, females and males, respectively, and other criteria were categorized as juvenile below 3.
Females were identified by the presence of small or large oostegites, whereas males were recognized by the presence of penes or stylets.
The isopods were immediately fixed in 70% ethanol and categorized to reproductive stage: juveniles (JUV), with no apparent sexual structures; receptive females, with small, nonfunctional oostegites and with (RFP) or without (RF) penes; mature females, with marsupium of large overlapping oostegites with or without embryos in the marsupium and with (MFP) or without (MF) penes; immature males (IM), with nonfunctional penes and lacking appendix masculina and ciliary tufts on the third and fourth pereopods; and mature males (MM), with functional penes and having appendix masculina and ciliary tufts upon the third and fourth pereopods.