Summary
-
1.
Early oogenesis inNeuroterus baccarum L. has been traced. No doubleness is observed in the chromatin threads before the diffuse state, from which they emerge paired end-to-end. The ten bivalents are arranged in a characteristic parallel series on the metaphase plate. Thereafter, lateral fusion occurs and, in the mature egg, the chromatin is present as a spindle-shaped mass.
-
2.
Agamic females lay two types of eggs. In the first type, one polar body is cast off and the eggs develop with 2n=10. In the second type no polar bodies are liberated and 2n=20.
-
3.
All the chromosomes have terminal centromeres. It is suggested that the apparent telosynapsis of the paired univalents after the diffuse state is due to complete terminalisation of chiasmata formed during an earlier, undemonstrated, parasynapsis of the threads.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
Literature Cited
Artom, C., 1931. L'origine e l'evoluzione della partenogenesi attraverso i differenti biotipi di una specie collettiva (Artemia salina L.) con speciale riferimento al biotipo diploide partenogenetico di Sète.Memor. d. R. Accad. d'Italia. Cl. di Sc. Fisiche, Matem. Natur., II.
Darlington, C. D. 1929a. Ring-formation inOnothera and other Genera.J. Genet., 20, 345–363.
Darlington, C. D. 1929b. Meiosis in Polyploids II.J. Genet., 21, 17–56.
Darlington, C. D., 1937.Recent Advances in Cytology. 2nd Edition. J. & A. Churchill, London.
Dederer, P., 1915. Oogenesis inPhilosamia Cynthia. J. Morph., vol. 26.
Doncaster, L., 1910. Gametogenesis of the Gall-fly,Neuroterus lenticularis (Spathegaster baccarum). Pt. I.Proc. Roy. Soc., B, vol. LXXXII.
Doncaster, L., 1911.Ibid. Gametogenesis of the Gall-fly,Neuroterus lenticularis (Spathegaster baccarum). Pt. I.Proc. Roy. Soc., B, vol. LXXXII.
Doncaster, L., 1916.Ibid., Gametogenesis of the Gall-fly,Neuroterus lenticularis (Spathegaster baccarum). Pt. I.Proc. Roy. Soc., B, vol. LXXXII.
Feulgen, R. 1924. Die Nuclealfärbung.Abderhalden's Handbuch der biologischen Arbeitsmethoden. Abt. V, Lief. 213.
Gatenby, J. B., 1918. The segregation of the Germ-Cells inTrichogramma evanescens. Quart Journ. Micros. Sc., vol. 63, Part 2.
Hegner, R., 1915.Studies in Germ Cells; IV.J. Morph., vol. 26.
Hogben, L. T., 1919. On certain nuclear phenomena in the oocytes of the Gall-flyNeuroterus numismaris. J. Linn. Soc. (Zoology), vol. 24.
Hogben, L. T., 1920. Studies on Synapsis I and II.Proc. Roy. Soc., B, vol. 91.
King, R. L. andE. H. Slifer, 1934. Insect Development. VIII. Maturation and early Development of unfertilized Grasshopper eggs.J. Morph., vol. 56.
Lefevre, G., 1907. Artificial Parthenogenesis inThalassema melitta. J. Exper. Zool., vol. 4.
Leiby, R. W. 1922. The Polyembryonid Development ofCopidosoma gelechiae with Notes on its Biology.J. Morph., vol. 37.
Martin, F., 1914. Zur Entwicklungsgeschichte des polyembryonalen ChalcidersAgeniaspis fuscicollis,Dalm.Zeitschr. Wiss. Zool., vol. 110.
Parmenter, C. L., 1933. Haploid, diploid, triploid and tetraploid chromosome numbers, and their origin in parthenogenetically developed larvae and frogs ofRana pipiens andRana palustris. J. Exper. Zool., LXVI.
Paulke, W., 1900–1. Ueber die Differenzirung der Zellelemente im ovarium der Bienenkönigin(Apis mellifica). Zool. Jahrb., Anat. u. Ontog. 14.
Peacock, A. D. andR. A. R. Gresson, 1928. The Rôles of the Nurse-Cells, Oocytes and Follicle-Cells in Tenthredinid Oogenesis.Quart. Jour. Micros. Sc., vol. 71. Pt. IV.
Silvestri, F., 1914. Prime fasi di sviluppo delCopidosoma, etc.Anat. Anz., XLVII.
Snodgrass, R. E. 1925.Anatomy and Physiology of the Honey-bee pp. 270–4. McGraw-Hill & Co., New York.
Author information
Authors and Affiliations
Additional information
with 4 plates
Rights and permissions
About this article
Cite this article
Dodds, K.S. Oogenesis inNeuroterus baccarum. L. . Genetica 21, 177–190 (1939). https://doi.org/10.1007/BF01508151
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF01508151