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Acta Biologica Hungarica
Authors:
L. Horváth
,
Cs. Székely
,
Zs. Boczonádi
,
E. Mészáros
,
M. Bercsényi
,
B. Urbányi
, and
T. Müller

European eel is a catadromous fish species, which means that after living in freshwater premature individuals adapt to sea water, and migrate to the Sargasso Sea for spawning. Although male eel can be sexually matured even in freshwater, to date, it was believed that female eel can be matured only in seawater. Here we show that the process of sexual maturation may be induced in freshwater by treating female eels with carp pituitary (GSI = 9.87±1.55%). It is thus proposed that seawater condition is not an obligatory environment for stimulating gametogenesis and for artificial maturation of the European eel in neither gender.

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Acta Phytopathologica et Entomologica Hungarica
Authors:
Á. Szabó
,
G. Ripka
,
Zs. Hajdu
,
B. Tempfli
,
M. Varga
,
I. Mészáros
,
Cs. Kutasi
,
T. Németh
, and
B. Pénzes

The authors give account of 7 new species, viz. Proctolaelaps striatus (Westerboer, 1963), Hypoaspis kargi Costa, 1968, Hypoaspis fishtowni Ruf and Köhler, 1993, Neoseiulus zwölferi (Dosse, 1957), Euseius stipulatus (Athias-Henriot, 1960), Neoseiulus subtilisetosus (Beglyarov, 1962), Neoseiulus pepperi (Specht, 1968) belonging to the order Mesostigmata, which have not been recorded so far in the Hungarian fauna.

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