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Fine structure of the egg envelopes of one proturan and two Collembolan genera (apterygota)
Institution:1. Center of Allergy & Environment (ZAUM), Technical University/Helmholtzzentrum Munich, Member of the German Center for Lung Research (DZL), Munich 80802, Germany;2. University of Navarra, Environmental Biology and BIOMA, Pamplona 31008, Spain;3. Polytechnic University of Bucharest, CAMPUS lab, Bucharest 060042, Romania;4. National Laboratory of Health, Environment and Food, Ljubljana 1000, Slovenia;5. Institute of Sustainable Processes of the University of Valladolid, Valladolid 47011, Spain;6. University of Valladolid, Department of Chemical Engineering and Environmental Technology, Valladolid 47011, Spain;7. Technische Hochschule Ingolstadt, Esplanade 10, Ingolstadt 85049, Germany;8. Helmut Hund Gmbh, Wetzlar 35580, Germany;9. IT consulting Robert Gebauer, Germany;10. Adam Mickiewicz University, Laboratory of Aerobiology, Department of Systematic and Environmental Botany, Poznań 61-712, Poland;11. Federal Office of Meteorology and Climatology (MeteoSwiss), Payerne CH-1530, Switzerland
Abstract:The eggs of one proturan and two representatives of Collembola (Heteromurus nitidus and Hypogastrura succinea) were studied by scanning and transmission electron microscopy. The proturan (Eosentomon) eggs are covered by 2 envelopes. The surface of the outer one is equipped with numerous hemispherical projections. The eggs of H. nitidus possess an envelope, which is studded with numerous granules. In H. succinea, eggs are covered with 2 envelopes. The outer is studded with characteristic complex structures. Neither micropyles nor aeropyles were observed in either proturan or collembolan eggs.
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