By Kazuyuki Mikami (auth.), Juan J. Tarín PhD, Antonio Cano MD (eds.)
This e-book bargains the reader an built-in viewpoint of fertilization within the animal country. because the learn on the molecular and mobile point is scarce in comparison to the large variety of animal species, for every phylum or category consultant species were selected. each one phylum/class starts with a common description of the sexual and asexual copy concepts of the respective species, by way of an outline of the reproductive cycle in addition to of its reproductive method. the focus is at the mobile and molecular elements of fertilization of the entire chosen consultant species, and the publication is totally illustrated with pictures and drawings to facilitate understanding.
Read Online or Download Fertilization in Protozoa and Metazoan Animals: Cellular and Molecular Aspects PDF
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Additional info for Fertilization in Protozoa and Metazoan Animals: Cellular and Molecular Aspects
Mol Cell Bioi 8:251-258 Friedl E, Miyake A, Heckmann K (1983) Requirement of successive protein syntheses for the progress of meiosis in Blepharisma. Exp Cell Res 145:105-113 Fujishima M (1988) Conjugation. In: Giirtz H-D (ed) Paramecium. Springer, Berlin Heidelberg New York, pp 70-84 Garcia GE, Wirtz RA, Rosenberg R (1997) Isolation of a substance from the mosquito that activates Plasmodium fertilization. Mol Biochem ParasitoI88:127-135 Gloeckner G, Beck CF (1995) Genes involved in light control of sexual differentiation in Chlamydomonas reinhardtii.
In those few cases in which maturational divisions have been observed they occur very soon after spermiocyst incorporation (see Fig. 1 for schematic representation). Incorporation of the spermiocyst into the oocyte has been observed in Clathrina (Leucosolenia) coriacea and Octavella galangaui in which sperm enter oogonia of about 25-30/-Lm in diameter. After sperm incorporation the oocytes at prophase I grow to about 100 /-Lm before the meiotic divisions occur, which indicates that protein synthesis and other metabolic activation processes have occurred following sperm incorporation.
1 mm large and very transparent. Most ctenophores shed their gametes, via the mouth, into the surrounding seawater where fertilization takes place. In Coeloplana and Tjalfiella, fertilization is internal and embryos are brooded. 1 Design of Reproductive System The design of the reproductive system is simple and visible gonads are located beneath the comb rows (Strathman 1987). The gonads are entodermal in origin, arising on the walls of the meridional canals. 2 Gametogenesis and Fertilization Information on gametogenesis is sparse and only recently has information on fertilization been obtained (Carre and Sardet 1984; Carre et al.