990 resultados para Stephani, Heinrich, 1761-1850.


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1. Bd. 1850 bis 1852 (Von Olmüss bis zur Errichtung des zweiten französischen Kaiserreichs, Vom 1. November 1850 bis zum 2. Dezember 1852) -- 2. Bd. 1852 bis 1854 (Die orientalische Frage bis zum Beginn des Krimkrieges, Vom 2. Dezember 1852 bis zum 14. Dezember 1854) -- 3. Bd. 1854 bis 1858 (Von der Beendigung der orientalischen Krisis bis zum Beginn der neuen Aera, Vom 15. Dezember 1854 bis zum 6. November 1858).

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Pub. in full in Zeitschrift für deutsche Philogie, 4. Bd., p. [249]-304.

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Metapenaeus endeavouri and M. ensis from coastal trawl fishing grounds off central Queensland, Australia, have marked seasonal reproductive cycles. Female M. endeavouri grew to a larger size than female M. ensis and occurred over a wider range of sites and depths. Although M. ensis was geographically restricted in distribution to only the shallowest sites it was highly abundant. Mating activity in these open thelycum species, indicated by the presence or absence of a spermatophore, was relatively low and highly seasonal compared with closed thelyeum shrimps. Seasonal variation in spermatophore insemination can be used as an independent technique to study spawning periodicity in open thelycum shrimps. Data strongly suggest an inshore movement of M. endeavouri to mature and spawn. This differs from most concepts of Penaeus species life cycles, but is consistent with the estuarine significance in the life cycle of Metapenaeus species. Monthly population fecundity indices suggest summer spawning for both species, which contrasts with the winter spawning of other shrimps from the same multispecies fishery.

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Signed lower right by photographer Casparius

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Signed lower right by photographer Casparius