Summary
The presence of the nucleolus and the nucleolonema in the spermatozoons of a specie of arachnides (Heteropachyloidellus robustus Roew.) is shown in this paper. This fact confirms the thesis supported in a previous work that the nucleolonema is a permanent cell structure.
During the maturative process of the spermatid the nucleolus does not disappear, and only its morphology changes. After proving that the intranuclear body found in the spermatozoon is really the nucleolus, and after showing that this body is present in the fecundative spermatozoons removed from the female spermathecae, it is concluded that the nucleolus is carried to the egg together with the chromosomic material.
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References
Austin, C. R.: The formation, growth and conjugation of the pronuclei in the rat egg. J. Roy. Microsc. Soc. 71, 295 (1951).
Blanc, H.: Anatomie et physiologie de l'appareil sexuel mâle des phalangides. Spermatogénèse, fecondation, hermaphroditisme. Bull. Soc. Vaudoise Sci. Nat. 17, 49 (1881).
Bösemberg, H.: Zur Spermatogenese bei den Arachnoiden. Zool. Anz. 20, 116 (1904).
—: Beiträge zur Kenntnis der spermatogenese bei den Arachnoiden. Zool. Jb., Abt. f. Morph. 21, 515 (1905).
Conklin, E. G.: Karyocynesis and cytocinesis in the maturation, fertilization and cleavage of Crepidula and other gasteropodes. J. Nat. Acad. Philadelphia 12, 1 (1902).
Estable, C., J. R. Sotelo: Una nueva estructura celular: el Nucleolonema. Inst. Inv. Cien. Biol. Publ. 1, 105 (1951).
—: Technical procedures for the study of the nucleolonema. Stain Tech. 27, 307 (1952).
Lams, H.: Étude sur l'oeuf de cobaye aux premiers stades de l'embryogenèse. Arch. Biol. 28, 229 (1913).
Lams, H., et J. Doorme: Nouvelles recherches sur la maturation et la fecondation de l'oeuf des mammifères. Arch. Biol. 23, 259 (1908).
Sokolow, I.: Untersuchungen über die Spermatogenese bei den Arachniden. III. Über die Spermatogenese von Nemastoma Lugubre (Opiliones). Z. Zellforsch. 8, 617 (1929).
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Sotelo, J.R., Trujillo, O. On the presence and character of the nucleolus in the spermatid and fecundant spermatozoons of heteropachyloidellus robustus roew. Z. Zellforsch. 39, 470–478 (1954). https://doi.org/10.1007/BF00334798
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DOI: https://doi.org/10.1007/BF00334798