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The checkered beetle Aphelochroa sanguinalis (Westwood) (Coleoptera: Cleridae) is found in savanna and woodland ecosystems of southern and eastern Africa. During surveys for insect floral visitors in the Skukuza Ranger District of Kruger National Park, South Africa, we encountered adults of Aphelochroa sanguinalis on flowers of two tree species, Acacia grandicornuta Gerstner and Acacia tortilis (Forsskal) Hayne (Fabaceae). These two tree species flower in the early rainy season (November-December) and have small white flowers in small round ball-shaped clusters. Adults of phelochroa sanguinalis were not found on flowers of 14 other tree species with different floral structures which were flowering at the same time as Acacia grandicornuta and Acacia tortilis. Predatory, reproductive, and defensive behaviors (including the presence of a chemical defense) are described for Aphelochroa sanguinalis based on field and laboratory observations.
Adults, and in some species larvae, of several members of Belonuchus Nordmann (Coleoptera: Staphylinidae: Staphylininae) and a few related genera seem to be to various degrees consistently associated with flower bracts of the genus Heliconia (Zingiberales: Heliconiaceae). They are predators and eat various dipterous and lepidopterous larvae in that habitat. Adults of at least Belonuchus cephalotes (Sharp) and Odontolinus fasciatus Sharp are able to immerse completely in water to capture larvae and/or pupae of mosquitoes (Culicidae). Adults and larvae of Belonuchus satyrus Erichson, and adults of B. cacao Blackwelder and B. rufipennis (F.) were found in water-filled flower bracts of Heliconia bihai (L.) L. in northern, lowland Venezuela. The bracts also contained mosquito larvae and semiaquatic coleopterous (Chrysomelidae: Hispinae), lepidopterous (Crambidae: Pyraustinae) and dipterous (Syrphidae, Stratiomyidae, Psychodidae, Richardiidae) larvae, and Annelida. In feeding trials, B. satyrus adults and larvae did not feed on hispine larvae or annelids, but did feed on all the lepidopterous and dipterous larvae available to them; adults dragged larvae and pupae of the mosquito genus Toxorhynchites Theobald from shallow water and thus seemed to be the top predators of the food pyramid within bracts. Records are compiled of association of Belonuchus and relatives with Heliconia bracts in the neotropics. We correct the names used for Heliconia spp. by earlier entomological authors working in Venezuela. Their ‘Heliconia caribaea Lamarck’ is H. bihai (L.) L. and their ‘H. aurea Rodríguez’ is H. bihai cv. Aurea.
A Caribbean species of Mecidea Dallas, M. longula Stål, apparently established in south Florida, is reported from the United States for the first time. Specimens were first collected in February 2008 in a light trap operated in Miami-Dade County, Florida. Collections in that trap have continued through the present. Searches near the trap location resulted in several specimens being taken from smutgrass, Sporobolus indicus (L.), an exotic grass now established throughout much of the southeastern United States. The three North American species of Mecidea are keyed and illustrated. In addition to the Florida locality, M. longula is reported for the first time from the British Virgin Islands, St. Kitts, St. Martin, and the Turks and Caicos Islands.
The transcription factor p63 is expressed as at least six different isoforms, of which two have been assigned critical biological roles within ectodermal development and skin stem cell biology on the one hand and supervision of the genetic stability of oocytes on the other hand. These two isoforms contain a C-terminal inhibitory domain that negatively regulates their transcriptional activity. This inhibitory domain contains two individual components: one that uses an internal binding mechanism to interact with and mask the transactivation domain and one that is based on sumoylation. We have carried out an extensive alanine scanning study to identify critical regions within the inhibitory domain. These experiments show that a stretch of ~13 amino acids is crucial for the binding function. Further, investigation of transcriptional activity and the intracellular level of mutants that cannot be sumoylated suggests that sumoylation reduces the concentration of p63. We therefore propose that the inhibitory function of the C-terminal domain is in part due to direct inhibition of the transcriptional activity of the protein and in part due to indirect inhibition by controlling the concentration of p63. Keywords: p63, transcriptional regulation, auto-inhibition, sumoylation
Mit Durchführung der Schröderschen Arbeitsmarktreformen ist der schon einmal in den 1980er Jahren diskutierte Vorschlag eines bedingungslosen Grundeinkommens und die mit ihm verbundene Diagnose einer »Krise der Arbeitsgesellschaft« in die reformpolitische Debatte zurückkehrt. Sie bilden eine sich zunehmend artikulierende »Antithese« zu dem in Deutschland von der rot-grünen Bundesregierung eingeführten Modell der »aktivierenden Arbeitsmarktpolitik«, das unter anderem eine Kultur des Misstrauens gegenüber Arbeitslosen institutionalisiert hat. Vor diesem Hintergrund versammelt das vorliegende Buch sozialwissenschaftliche Diskussionsbeiträge. Im Anschluss an eine Rekapitulation und Neuformulierung dieser Diagnose, die in Deutschland erstmals von Hannah Arendt prononciert formuliert wurde und nun wie eine »Wiederkehr des Verdrängten« eine Renaissance erfährt, folgen darauf bezogene zeitdiagnostische Fallrekonstruktionen sowie Beiträge zu Fragen der Realisierung des Grundeinkommensvorschlags. Enthält Beiträge von Olaf Behrend, Eva Daniels, Thomas Franke, Manuel Franzmann, Achim Greser, Heribert Lenz, Matthias Jung, Ingmar Kumpmann, Jörn Lamla, Wolfgang Ludwig-Mayerhofer, Matthias Müller, Ulrich Oevermann, Michael Opielka, Andé Presse, Gerhard Schildt, Ariadne Sondermann, Johannes Suciu, Yannick Vanderborght, Philippe Van Parijs, Georg Vobruba, Götz W. Werner.
Condensing phenomena for systems biology, ecology and sociology present in real life different complex behaviors. Based on local interaction between agents, we present another result of the Energy-based model presented by [20]. We involve an additional condition providing the total condensing (also called consensus) of a discrete positive measure. Key words: Condensing; consensus; random move; self-organizing groups; collective intelligence; stochastic modeling. AMS Subject Classifications: 81T80; 93A30; 37M05; 68U20
Der Deutsche Corporate Governance – Kodex empfiehlt seit seiner jüngsten Änderung im Juni 2009, dass der Aufsichtsrat auf die „Unabhängigkeit“ eines von ihm herangezogenen externen Vergütungsberaters achten soll. Dieses Unabhängigkeitserfordernis wirft mehrere Fragen auf, denen im Folgenden nachgegangen werden soll. Außerdem entwickelt der Beitrag Vorschläge, wie Aufsichtsrat und Vergütungsberater verfahren sollten, um der Empfehlung des Corporate Governance-Kodex zu genügen.