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Spermatophore fertilization in Locusta migratoria L


, : Spermatophore fertilization in Locusta migratoria L. [rept Appl Ent] 4(1): 189-218

A detailed description of the reproductive organs, the spermatophore, and copulation of L. migratoria is given. (1) In the Acrydiidae (Tetrigidae) (Acrydium) the spermatophore is a round dense balloon without a neck, which, during the comparatively short period of copulation, is deeply inserted by means of the penis into a special rounded inflation of the T-shaped receptaculum seminis and empties itself of sperm without the use of the copulative organs of the [male]*; 2-4 days later the contracted and darkened envelope is shed by the [female], passing between the pushed back lamina subgenitalis and the ovipositor. (2) In Oedipodinae and Acridinae (Locusta, Oedaleus, Ramburiella, Acrida, etc.) the spermatophores are like pipettes with a wide bladder-like upper reservoir and a thick (often long) tubular portion (the median part of the ejaculating canal of the latter is highly constricted) . During copulation, which lasts a long time, only one spermatophore is introduced, which pumps the sperm into the spermatheca. After copulation the bladder-like part of the spermatophore remains in the penis and is soon ejected, while the tubular part remains for a considerable period in the spermathecal canal of the [female], acting as a stopper. (3) In Cantantopinae (Calliptamus, Podisma, and Anacridium) the spermatophores resemble those of the Oedipodinae and Acridinae but do not have a median constriction of the duct. At copulation they are connected with the penis, after its extraction the spermatophores either rupture or remain for a short time in the spermatheca. The [male], remaining several hours on the [female], introduces successively produced spermatophores, one at a time, into the widened opening of the spermathecal canal, the rapidly emptied envelopes of these spermatophores are shed from the spermatheca, and accumulate between the ventral valves of the ovipositor in the form of a bundle tied together by the remains of the sperm, it falls out shortly after the separation of the pair. It was found that the sperm of the Acrididae and Acrydiidae are tied together in bundles (spermatodesms) and that copulation is repeated, beginning before the ovaries are mature.

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Delaria K.; Guillen M.; Louie A.; Jurnak F., 1991: Stabilization of the escherichia coli elongation factor tu gtp aminoacyl transfer rna complex. The effect of ammonium sulfate on the Escherichia coli elongation factor Tu-GTP-aminoacyl-tRNA complex has been studied. The half-lives of 12 E. coli aminoacyl- tRNA species were determined at 37.degree. C in the presence and absence of an equimol...

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D'hondt J L.; Goyffon M., 1988: Use of the tabular keys of identification in the interpretation of the polyacrylamide gradient gels in qualitative electrophoresis. Presentation of an example of application (on the Ctenostomatous Bryozoan genus Alcyonidium) of the tabular keys of identification. This method of interpretation of the electrophretic profiles could facilitate the interspecific comparison or compa...

Falk, C.R.; Blech, H., 1947: Anomalous findings in penicillin level determinations in urine. Anomalous findings were observed in 30 instances of 67 early urine specimens studied seemingly not due to technical errors. These consisted of increased bactericidal action; this was not observed in 249 specimens collected > 4 hrs. after treatm...

Koslinska, M.; Nowakowski, Z., 1988: Effectiveness of insecticides in the control of codling moth cydia pomonella l. lepidoptera tortricidae with special reference to acylureas. In two field experiments on codling moth control the effectiveness of 4 acylurea compounds were compared to those of 9 preparations belonging to four other chemical groups. One (1984) or three (1985) sprays per season were applied on the dates rec...

Vercellotti, G.M., 1990: Proinflammatory and procoagulant effects of herpes simplex infection on human endothelium. Atherosclerotic lesions have been reported to contain herpes simplex virus (HSV) genomic material. This and other evidence suggests that latent viral infection may be an atherogenic trigger. Moreover, active HSV lesions manifest histologically mar...

Kincaid, T., 1964: Notes on Thais (Nucella) lima (Gmelin), a marine gastropod inhabiting areas in the north Pacific Ocean. Unknown

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Hochlowski, J.E.; Jackson, M.; Rasmussen, R.R.; Buko, A.M.; Clement, J.J.; Whittern, D.N.; McAlpine, J.B., 1997: Production of brominated tiacumicin derivatives. Several novel tiacumicin derivatives containing bromine have been produced by the addition of inorganic bromine to the fermentation broth of Dactylosporangium aurantiacum subsp. hamdenensis. Structures were elucidated employing mass spectrometry a...