scholarly journals The evolution of sexual difference in dispersal strategy sensitive to population density

2007 ◽  
Vol 42 (2) ◽  
pp. 173-179 ◽  
Author(s):  
Tadao Hirota
1992 ◽  
Vol 19 (5) ◽  
pp. 565 ◽  
Author(s):  
PC Thomson ◽  
K Rose ◽  
NE Kok

Between 1975 and 1984, 105 radio-collared dingoes, Canis familiaris dingo, were tracked and observed from aircraft on the Fortescue River in Western Australia. The majority of dingoes were members of 18 territorial packs, including four pairs. Five packs were monitored for more than three years. Most bitches became pregnant, including those 9-10 months old, although not all litters were raised. Packs raised an average of 1.1 litters per year. Instances of packs raising the litters of two bitches in a year were recorded. The area (up to 400km*2) was covered initially (1975-78) by a mosaic of stable pack territories. Little emigration occurred and population density rose to a peak of 22.2 dingoes per 100km*2 in 1978 due to an increase in pack size. Perturbations to the social system, including disintegration of some packs, an increase in emigration, shifts of pack territories and contraction of territories into the most favoured areas, coincided with high population density and a reduced food supply. After aerial baiting in 1980 killed all the dingoes from the study site, immigrants from surrounding areas established a new population. The increase in density was moderated by the formation of new pairs or packs that occupied surrounding vacant areas. The dispersal strategy of pack members was a major factor affecting the population density of dingoes in the study area.


2004 ◽  
Vol 49 (3) ◽  
pp. 327-329
Author(s):  
Howard S. Schwartz
Keyword(s):  

2020 ◽  
pp. 133-158
Author(s):  
K. A. Kholodilin ◽  
Y. I. Yanzhimaeva

A relative uniformity of population distribution on the territory of the country is of importance from socio-economic and strategic perspectives. It is especially important in the case of Russia with its densely populated West and underpopulated East. This paper considers changes in population density in Russian regions, which occurred between 1897 and 2017. It explores whether there was convergence in population density and what factors influenced it. For this purpose, it uses the data both at county and regional levels, which are brought to common borders for comparability purposes. Further, the models of unconditional and conditional β-convergence are estimated, taking into account the spatial dependence. The paper concludes that the population density equalization took place in 1897-2017 at the county level and in 1926—1970 at the regional level. In addition, the population density increase is shown to be influenced not only by spatial effects, but also by political and geographical factors such as climate, number of GULAG camps, and the distance from the capital city.


Derrida Today ◽  
2014 ◽  
Vol 7 (2) ◽  
pp. 180-196 ◽  
Author(s):  
Jessica Polish

In this essay, I argue that Derrida cannot pursue the question of being/following unless he thinks through the question of sexual difference posed by figures of little girls in philosophical texts and in literature, specifically as posed by Lewis Carroll's Alice whom Derrida references in L'animal que donc je suis. At stake in thinking being after animals after Alice is the thought of an other than fraternal following, a way of being-with and inheriting from (other than human) others that calls for an account of development that is not dictated by a normative autotelic and sacrificial logic. I argue that Derrida's dissociation of himself and his cat from Alice and her cat(s) in L'animal que donc je suis causes him to risk repeating the closed, teleological gestures philosophers like Kant and Hegel perpetuate in their accounts of human development. The more sweeping conclusion towards which this essay points is the claim that the domestication of girls and their subjection to familial fates in narratives and the reduction of development to teleology more generally, require the sacrifice and forgetting of ‘nature’, including animals, so that the fates of girls and ‘nature’ are intertwined in the context of projects of human world-building and home-making.


Author(s):  
Laura Hengehold

Most studies of Simone de Beauvoir situate her with respect to Hegel and the tradition of 20th-century phenomenology begun by Husserl, Heidegger, and Merleau-Ponty. This book analyzes The Second Sex in light of the concepts of becoming, problematization, and the Other found in Gilles Deleuze. Reading Beauvoir through a Deleuzian lens allows more emphasis to be placed on Beauvoir's early interest in Bergson and Leibniz, and on the individuation of consciousness, a puzzle of continuing interest to both phenomenologists and Deleuzians. By engaging with the philosophical issues in her novels and student diaries, this book rethinks Beauvoir’s focus on recognition in The Second Sex in terms of women’s struggle to individuate themselves despite sexist forms of representation. It shows how specific forms of women’s “lived experience” can be understood as the result of habits conforming to and resisting this sexist “sense.” Later feminists put forward important criticisms regarding Beauvoir’s claims not to be a philosopher, as well as the value of sexual difference and the supposedly Eurocentric universalism of her thought. Deleuzians, on the other hand, might well object to her ideas about recognition. This book attempts to address those criticisms, while challenging the historicist assumptions behind many efforts to establish Beauvoir’s significance as a philosopher and feminist thinker. As a result, readers can establish a productive relationship between Beauvoir’s “problems” and those of women around the world who read her work under very different circumstances.


2020 ◽  
Vol 22 (2) ◽  
pp. 175-187
Author(s):  
Herman Westerink ◽  
Philippe Van Haute

Although Freud's ‘Family Romances’ from 1909 is hardly ever discussed at length in secondary literature, this article highlights this short essay as an important and informative text about Freud's changing perspectives on sexuality in the period in which the text was written. Given the fact that Freud, in his 1905 Three Essays, develops a radical theory of infantile sexuality as polymorphously perverse and as autoerotic pleasure, we argue that ‘Family Romances’, together with the closely related essay on infantile sexual theories (1908), paves the way for new theories of sexuality defined in terms of object relations informed by knowledge of sexual difference. ‘Family Romances’, in other words, preludes the introduction of the Oedipus complex, but also – interestingly – gives room for a Jungian view of sexuality and sexual phantasy. ‘Family Romances’ is thus a good illustration of the complex way in which Freud's theories of sexuality developed through time.


1997 ◽  
Vol 84 (1) ◽  
pp. 176-178
Author(s):  
Frank O'Brien

The author's population density index ( PDI) model is extended to three-dimensional distributions. A derived formula is presented that allows for the calculation of the lower and upper bounds of density in three-dimensional space for any finite lattice.


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