Vorzugstemperatur und Vorzugsluftfeuchtigkeit der beiden Schabenarten Periplaneta Americana und Blaberus trapezoideus (Insecta: Blattaria)

Zusammenfassung Von adulten M?nnchen der beiden SchabenartenPeriplaneta americana undBlaberus trapezoideus wurden gleichzeitig Vorzugstemperatur und Vorzugsluftfeuchtigkeit ermittelt. Für beide Arten konnten in ihren Vorzugstemperaturen gewisse Akklimatisationserscheinungen festgestellt werden. BeiP. americana steigt die Vorzugstemperatur von 26°–29° nach einem einmonatigen Aufenthalt bei 20° auf etwa 29°–30° nach einerer Exposition bei 35° an.B. trapezoideus hat eine um etwa 3° niedrigere Vorzugstemperatur. Nach einem Aufenthalt bei 20° betr?gt sie etwa 23°–26°. Sie steigt auf etwa 26° nach einer Exposition bei 32° an.P. americana bevorzugt stets ein trockenes Milieu (geboten wurden 18% r.L.),B. trapezoideus such h?here Luftfeuchtigkeit auf (45%–93% r.L.) und meidet trockenes Milieu. Ein Gewichtsverlust von 15%–18% veranla?tP. americana eine um 1°–3° niedrigere Vorzugstemperatur, aber vor allem eine sehr hohe Luftfeuchte aufzusuchen. Ein Gewichtsverlust von 20%–25% des K?rpergewichtes hat keinen Einflu? auf die Vorzugstemperatur vonB. trapezoideus; jedoch halten sich die Tiere nur ebenfalls l?nger in sehr hoher Luftfeuchte auf.

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Summary The combined temperature and humidity preferences were investigated in adult males ofPeriplaneta americana andBlaberus trapezoideus. Both species show an acclimatization effect. After spending one acclimatization at 20°B. trapezoideus preferred 23°–26°, after spending one month at 32° the preference was about 26°.P. americana prefers the lowest available humidity (18%).B. trapezoideus avoids dry air and is equally distributed in the steps provided of 45%–93% r.h. After desiccation to 15%–18% of the total body weight,P. americana prefers a temperature 1°–3° lower than that before desiccation, but in this case most of all it prefers a very high humidity. Desiccation has no influence on the temperature preference ofB. trapezoideus, but the animal spends more time in very high humidities.

     

Identification of menstrual blood by real time RT-PCR: technical improvements and the practical value of negative test results

The identification of body fluids can be of crucial importance in forensic casework. Recently we have shown that the detection of cell- and tissue-specific mRNAs is a suitable technique to identify menstrual blood and semen. In this paper we present an improved method using real time-PCR and the menstrual blood marker MMP-7 which increases sensitivity and specificity. We furthermore demonstrate case examples described showing that the correct identification of samples as non-menstrual is likely to be in the focus of criminal investigations. Although negative test results may have a number of other reasons, the new technique provides quantitative results thus allowing a cut-off value for the control marker GAPDH to be defined, below which negative results for the menstrual blood marker MMP-7 allow the conclusion that the sample was indeed not menstrual blood. Using these data, it is possible to apply the molecular identification of menstrual blood to forensic casework considering both the limitations and the capabilities of the method.     

Cyclical accountability

Public Choice - A new wave of protectionism is threatening the open and cooperative international order. This paper applies evolutionary game theory to analyze the stability of international trade...     

Domestic intelligence and German military leaders, 1914–18

The top of the German domestic intelligence system was taken over by the military during World War I. The rest of the system for collecting and reporting remained in local and regional political police hands. The military leaders did not make good use of the information they received, especially about labour and Social Democracy. The essay presents the ways that the system of gathering and reporting information functioned, including its wartime changes under the state of siege. Three specific issues are followed up with the reporting system for 1917–18. Then the essay shows how the military leaders responded to raw and filtered information before exploring why they made such inadequate use of the very thorough reports which they received.     

Die Entwicklung des Föderalismus und der Föderalismus ‐ diskussion in der Schweiz von 1874 bis 1964

Before 1874 and after 1964, the evolution of federalism and related political discourses is well known. Between these years, however, stretches a terra incognita, which this political‐historical essay tries to explore. This period was characterised by a steady shift of power from the Canton's to the Confederation, resulting in the frequent re‐grouping of federalists and centralists. Before the First World War, traditionalists from central and occidental Switzerland fiercely defended a confederalist vision. During the interwar years, things quietened down. The modern federal State organisation was no longer fundamentally questioned, and the debate focused on technical questions. The “geistige Landesverteidigung” (moral defence of the country against fascism) secured an enduring yet problematic place for federalism in Swiss culture by transforming it into the “unity in diversity” principle. After the Second World War, modernising forces resulted in the “executive and co‐operative federalism” that we know today.     

Judicial detection skill and contractual compliance

Mutually beneficial agreements might fail if the parties fear contractual opportunism. Litigation is supposed to be a remedy, but it gives scope for another kind of opportunistic behavior, which we call litigational opportunism: Even known that the opponent has fulfilled his obligations, a party might bring suit. We introduce a new concept, called judicial detection skill, and show that positive judicial detection skill is a prerequisite if the court system is to deter opportunistic suits and simultaneously induce bilateral contractual compliance. The traditional literature on litigation either assumes judges with zero detection skill, or simply neglects that opportunistic suits might be successful. We prove that those models are unable to provide an answer to the question of how to prevent both types of opportunism simultaneously.     

Compulsory Voting Rules,Reluctant Voters and Ideological Proximity Voting

Political Behavior - Political theorists have argued that democracies should strive for high turnout, leading to an argument for the introduction of compulsory voting, one of the surest ways to...