Journal of Ultrastructure Research
The ovary of the lobster, Homarus americanus: II. Structure of the mature follicle and origin of the chorion
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Cited by (33)
Ovarian development in swimming crabs: Comparative histochemistry and ultrastructure of Callinectes ornatus and Arenaeus cribrarius (Brachyura, Portunidae)
2020, Tissue and CellCitation Excerpt :Ultrastructurally, the least electron-dense layer, i.e., the endochorion, increases in thickness, while the more electron-dense outer layer, i.e., the exochorion, undergoes little alteration. The chorion is composed of layers of different electron density, which has also been reported for the majoids Libinia emarginata (Hinsch, 1971), Mithrax hispidus (Herbst, 1790), Mithrax tortugae Rathbun, 1920, Mithraculus forceps A Milne-Edwards, 1875, and Omalacantha bicornuta (Latreille 1825) (Mollenberg et al., 2017) and for the lobster Homarus americanus H. Milne Edwards, 1837 by Talbot (1981). As also proposed by Charniaux-Cotton (1980), the microvilli of both portunids are significantly reduced at the mature stage, and pinocytic vesicles are no longer observed in the oocyte cortex, which indicates the end of the exogenous phase.
Research frontiers in penaeid shrimp reproduction: Future trends to improve commercial production
2019, AquacultureCitation Excerpt :The role of steroid hormones in crustaceans may be similar to fish and amphibia, where estrogens stimulate vitellogenesis and progestagens induce oocyte maturation (Fairs et al., 1990). In the lobster, Homarus americanus, steroidogenesis is associated with the follicle cells (Talbot, 1981). Merlin et al. (2016) suggested that the hepatopancreas could be the major organ responsible for progesterone and estradiol synthesis in P. monodon; progesterone levels seem to increase in hemolymph and ovary for advanced vitellogenic stages.
Molecular cloning and characterization of cortical rod protein in the giant freshwater prawn Macrobrachium rosenbergii, a species not forming cortical rod structures in the oocytes
2007, Comparative Biochemistry and Physiology - B Biochemistry and Molecular BiologyGamete interactions during in vitro fertilization of lobster (Homarus americanus) Oocytes
1991, Journal of Structural Biology
Supported by a Sea Grant from NOAA and an Intercampus Travel Grant from the University of California.
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Present address: Department of Biology, University of California, Riverside, Calif. 92521.