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Waltraud Klepal
Researcher at University of Vienna
Publications - 54
Citations - 843
Waltraud Klepal is an academic researcher from University of Vienna. The author has contributed to research in topics: Idiosepius & Siboglinidae. The author has an hindex of 18, co-authored 54 publications receiving 775 citations.
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Journal ArticleDOI
Ultrastructural Investigations of Eusperm-atogenesis and Euspermatozoa in Cerithidea obtusa (Lamarck 1822) (Caenogastropoda: Potamididae)
TL;DR: The morphological changes during spermiogenesis such as nucleus condensation, acrosome formation and development of the midpiece are described and the taxonomic position of Cerithidea obtusa is confirmed within the Potamididae.
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The short life of the Hoyle organ of Sepia officinalis: formation, differentiation and degradation by programmed cell death
Norbert Cyran,Anna Palumbo,Waltraud Klepal,Erica A. G. Vidal,Yannick M. Staedler,Jürg Schönenberger,Janek von Byern,Janek von Byern +7 more
TL;DR: It is aimed to characterize morphologically the development, maturation and degradation of the gland throughout embryonic and first juvenile stages in Sepia officinalis, and to suggest a possible NO role in cell death signalling in cephalopod embryos.
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Structural peculiarities of the penis of Semibalanus balanoides (Linnaeus, 1767) and Chthamalus stellatus (Poli, 1791) (Crustacea: Cirripedia: Thoracica)
TL;DR: An electron microscopical study of peculiar structures that appear during the growth and degeneration of the penis in some thoracican barnacles detected a small triclinic crystal in the longitudinal muscles of the degenerating penis, close to the sarcoplasmic reticulum.
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Studies on the reproduction of cirripedes. V. Pollicipes cornucopia Leach and Balanus balanus (L.); an electron microscope investigation of the structure of the oviducal sacs
Waltraud Klepal,Harold Barnes +1 more
TL;DR: The structure of the oviducal sac of Pollicipes cornucopia Leach and of Balanus balanus has been examined by scanning and transmission electron microscopy and finer reticular material is present which has been shown to be ‘liquid’ before fixation.
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Characterization of cement float buoyancy in the stalked barnacle Dosima fascicularis (Crustacea, Cirripedia)
TL;DR: This study shows that the secreted cement consists of more than 90% water and the gas volume is on average 18.5% and the intact foam-like cement float is sealed to the surrounding water.