JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range of content in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new forms of scholarship. For more information about JSTOR, please contact support@jstor.org..Wiley-Blackwell and Nordic Society Oikos are collaborating with JSTOR to digitize, preserve and extend access to Ornis Scandinavica. Persson, 0. and Ohrstr6m, P. 1989. A new avian mating system: ambisexual polygamy in the Penduline Tit Remiz pendulinus. -Ornis Scand. 20: 105-111.A study of a colour-ringed population of the Penduline Tit in Southern Sweden has revealed a new mating system, ambisexual polygamy, in which sequential polygyny and polyandry occur simultaneously. All parental duties were carried out by one mate only. Of 140 clutches, 48% were attended by females and 18% by males, while 34% were deserted by both parents before incubation. Polyandry was exhibited by 31% of the females, while the remainder attended their first brood. Clutches incubated by females were larger than those deserted. Of the males, 30% assumed parental care, most of them in the later part of the breeding season. Polygamy could give each mate the opportunity of increasing its breeding success, but due to individual differences in behaviour, the outcome is varied. We argue that the unique mating system of the Penduline Tit has developed as a consequence of an increasingly skewed sex-ratio among individuals available for new pair-bonds as the breeding season progresses.

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The surveillance in public and private places, both physically and digitally, is increasing for different reasons. In this paper we intend to discuss surveillance and persuasive technology in an ethical perspective with an eye to its historical and cultural context. In section 1, we present some different tendencies of surveillance in society. In section 2, we elaborate on some important historical ideas on surveillance. In section 3, we consider the use of persuasive technology for surveillance purposes. In section 4, we discuss the development towards increasing surveillance in society, at work, in public places etc. In section 5, we draw up some ethical concerns on surveillance, and finally. In section 6, we discuss the question of a possible need for a public and democratic control of the use of surveillance technology.

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086a4c9e-1fbb-4474-b9f3-1d653ba70bbf)/publications.html?filter=research) Emerald does not grant permission for this article to be further copied/distributed or hosted elsewhere without the express permission from Emerald Group Publishing Limited.

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