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Chronological data on morphogenesis of the female genital apparatus of locusta migratoria migratorioides orthoptera acrididae



Chronological data on morphogenesis of the female genital apparatus of locusta migratoria migratorioides orthoptera acrididae



Acrida 8(3): 117-132



Germ cells of L. migratoria are first detectable after mesoderm formation, during the 10th stage of embryonic development. There are about 30 germ cells in each embryo, divided into 2 symmetrical groups lying in the inner wall of the upper dorsal coelomic pouch. The cells are large with a voluminous and clear nucleus and are easily distinguishable from mesoderm cells. Twelve stages are distinguished. At the time of hatching the whole genital apparatus is in position, but it changes considerably during the juvenile instars. The ovarioles are formed during the first 3 juvenile instars. At the 2nd juvenile instar the common oviduct is displaced from the 7th to the 8th abdominal segment. The last 2 juvenile instars are characterized by important growth of the different parts of the genital tract.

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Accession: 004956572

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