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In 2006 Institute of Natural Fibres and Medicinal Plants (INF&MP) began research on an old Polish cultivar of white mulberry - “Żółwińska”. By that time in Europe the white mulberry had been forgotten or known only as a plant associated with breeding of mulberry silkworms. Nevertheless, the initial studies have shown great potential of this plant in energy, food and pharmaceutical industries. The leaves and fruits contain very valuable active substances, which may be used in health care. What is more, very fast growth of mulberry causes that biomass of the plant may be used as biofuel. The aim of the article is promoting the white mulberry and presenting its possible various uses, which may be very useful for several sectors of the European economy.
Detailed morphological descriptions of juvenile stages of two oribatid species from the family Damaeidae: Epidamaeus kamaensis (Sellnick, 1925) and Porobelba spinosa (Sellnick, 1920) are presented. Juvenile stages of E. kamaensis and earlier known immatures of Epidarnaeus (E. puritanicus, E. longisetus) differ by minor differences in setal structure and measurements. Juvenile stages of Epidarnaeus and Damaeus differ by the following characters: shape of exuvial attachment cornicle in nymphs, correlation of the length and structure of gastronotal setae, the larval body posterior, form of sensilli, and leg setation. Juvenile stages of these two genera are identical in genital, aggenital, anal, adanal, gastronotal and epimeral setation, structure of famulus, and structure of cerotegument. Moreover, in the present paper new data about immatures of Porobelba spinosa. It is the first record of all juvenile stages of Porobelba, that is why a comparison of ontogeny development of this genus and other damaeid mites is premature.
The morphology of juvenile and adult stages of two oribatid mites, Scutovertex rugosus Mihelčič, 1957 and S. perforatus Sitnikova, 1975 (Oribatida: Scutoverticidae) is described and illustrated. The comparative analysis of morphological features during ontogeny is presented. Moreover, the development duration in various laboratory conditions was studied. The development of S. rugosus lasted from 72 to 135 days, that of S. perforatus from 66 to 85 days.
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