This thesis tests various hypotheses from a variety of research traditions that predict the likelihood for potential sex differences in "talking": a newly-emergent phase of romantic courtship. Data for this study was derived from a purposive sample of 566 students enrolled during the Fall 2011 semester generated using a self-administered survey available on the East Tennessee State University SONA system. Statistical analyses using chi-square, analysis of variance (ANOVA), and binary logistic regression reveal statistically significant differences for males and females on beliefs about sexual exclusivity and sexual activity during the "talking" phase. Significant behavioral differences exist in whether "talking" is viewed instrumentally as a means for information gathering. However, contrary to expectation, males and females did not reveal significant differences in how they defined "talking." It is suggested that future research further expand the types of variables included, and further efforts be made to combine quantitative and qualitative data sources.

In societies where all individuals are reproductively totipotent and yet, at a given time only one of them reproduces, it is interesting to examine the factor(s) that may influence and predict who will be the reproductive. I am investigating various behavioural, morphological and physiological parameters in the primitively eusocial wasp Ropalidia marginata, and their role in determining the current reproductive and her future successors. In several group-living species, especially in primitively eusocial ones, a strong link between behavioural dominance and reproductive dominance is observed. Hence, I am also investigating the possible determinants of behavioural dominance in R. marginata. I have carried out my study on artificially constituted pairs of wasps as well as in natural colonies in laboratory cages, which represent the founding phase and the established phase in the colony cycle, respectively. Chapter 1: Behavioural and Reproductive Dominance in Pairs of R. marginata Age and body size had no effect on behavioural dominance in pairs of R. marginata, whereas prior experience of behavioural dominance affected future dominance status, indicating presence of winner- and loser-effects. Dominance ranks are relatively stable. This is different from what has been found in colonies, where dominance ranks sometimes change on a daily basis. Body size had no effect, whereas age and behavioural dominance had a significant effect on reproductive dominance in pairs, with older individuals and more dominant individuals having a higher probability of becoming the reproductive. Since no relationship was found between age and behavioural dominance, we predict that the underlying mechanisms by which age and behavioural dominance affect reproductive dominance and independent of each other. This study gives a clear indication that age and behavioural dominance are important variables that determine the reproductive individual during the founding phase of the colony. Chapter 2: Comparison of Dominance Indices and Recommendations for their Use When several individuals interact with each other as in colonies, in a differential and sometimes in a preferential manner, it is difficult to attribute dominance ranks to individuals. Dominance indices are employed to simplify these interactions and rank individuals in dominance hierarchies. Since the rationale behind using a particular dominance index is seldom given in behavioural literature, a comparison of three dominance indices was carried out in second part of the thesis. Each index was gauged on how similar are its ranks as compared to other two indices. Indices were also compared based on the number of untied or unique ranks they attributed. The index that gave least number of ties in ranks was assumed to be better than others. In addition to data from R. marginata colonies, I used data from R. cyathiformis colonies (a congeneric species which behaves more like a typical primitively eusocial species), and artificial data sets, to increase variability in the interaction patterns. We found that each of the indices had their own advantages and disadvantages. In species like R. marginata and R. cyathiformis, where only a few pairs show interactions, and among those who do, very few show reversals, Frequency-based Dominance Index (FDI) is the recommended index of choice. Studies like these will help in understanding how dominance indices operate under certain situations before applying them to construct hierarchies. Chapter 3: Behavioural and Reproductive Dominance in Colonies of R. marginata Age does not affect behavioural dominance, whereas winner and loser effects exist in colonies of R. marginata, just as in pairs. When analysed in detail, I found that colonies of R. marginata showed fewer proportion of pairs interacting, and lower frequency/hour/pair of dominance-subordinate interactions as compared to experimentally paired individuals (from 1st chapter). However, the dominance displays and behaviours were much more intense and severe in colonies. After dominance hierarchies are already established in colonies, frequent need to show dominance behaviour may not arise, due to familiarity between interacting individuals. However, since individuals are possibly aware of each others’ strengths due to past interactions, dominance behaviours are much more severe when contests do happen. My results show that there might be some similarities in terms of determinants of behavioural dominance between pairs and colonies, but the expression of behavioural dominance is quite different. From earlier work it was already known that if the queen/reproductive of the colony disappears or is experimentally removed, one of the individuals shows extreme levels of aggression. This individual, referred to as the potential queen (PQ), will go on to become the next queen of the colony. Her behavioural profile, from the emergence till she establishes herself as the next queen have been well studied earlier. What was not known were the factor(s) that determine the identity of the PQ. It was also unclear what happens when the queen as well as the PQ are both removed, simultaneously or in quick succession. To test whether there is a longer reproductive hierarchy in R. marginata, the queen and the first potential queen of a nest were removed. I found that successive potential queens emerged as readily as the first potential queen, and with dominance profiles comparable to the first PQ, indicating that a reproductive hierarchy indeed exists, at least up to five PQ’s. It was also found that these potential queens were acceptable to all other individuals, as there was not a single act of behavioural dominance directed toward any potential queen. It was also observed that all PQs went on to become queens if the previous queen or PQ was not returned. When tested for various morphological, physiological, behavioural and life history traits (factors possibly influencing the position of an individual in the reproductive hierarchy), we found that age is the only variable that emerges as an important predictor of reproductive succession, with older animals having a higher chance to succeed as next queens of the colony, although even age is not an absolute predictor. Unlike in the pairs, in colonies of R. marginata behavioural dominance is not a good predictor of an individual’s ability to be the queen or the potential queens. The four most important findings of my study are: (i) the first demonstration of winner and loser effects in social insects; (ii) the demonstration that behavioural dominance influences reproductive dominance in pairs but not in colonies; (iii) demonstration of a long reproductive queue among individuals of a colony; and (iv) discovering that age is an important predictor of the identity of the queen and the future queens of the colony. I believe these findings will add significantly to our growing knowledge of the social biology of R. marginata. Finally, my work shows that pairs of R. marginata, representing the founding phase of the colony, behave more like a typical primitively eusocial species, whereas colonies which represent the established phase of the colony cycle behave more like highly eusocial species. Finding the characters of two different forms of sociality in the same species in different phases of the colony cycle makes R. marginata an excellent model system to study evolution of eusociality.

L’objectif de la recherche a été de tester la pertinence de 10 attributs de comportement social des fondateurs-dirigeants de start-up de biotechnologie issus de l’observation des conduites des animaux sociaux (Wilson, Sociobiology, 1975). A travers 25 entretiens approfondis reprenant l’expérience des fondateurs-dirigeants et leur évaluation des facteurs contributifs à leur succès managérial sur les critères de Wilson, nous mettons en évidence des références constantes à la biologie évolutionniste qui permettent de mieux comprendre les éléments déterminants de socialisation et de gouvernance des start-ups de biotechnologie. Toutes les références des dirigeants créant des analogies entre biologie cellulaire et moléculaire et entreprise sont recensées pour proposer une interprétation de la firme comme un organisme vivant. Notre travail propose des pistes en matière de développement des organisations et de développement personnel issues de trois attributs sociobiologiques particulièrement explicites dans le milieu managérial : la cohésion, la connectivité et la démographie adaptive. L’échantillonnage restreint aux start-ups de biotechnologie ne permet pas d’inférer des généralisations à toutes les nouvelles entreprises, comme dans le secteur digital, mais permet de penser que les conduites managériales des fondateurs-dirigeants pourraient avoir des points communs. Les implications de nos résultats peuvent conduire à réexaminer les principes de constitution des équipes dirigeantes des start-ups pour obtenir une meilleure efficacité du leadership grâce à une socialisation efficace. / The research aimed at testing the relevance of 10 attributes of social managerial behavior by founding Managing Directors of young biotech companies. These attributes are sourced from observation of social animals (Wilson, Sociobiology, 1975). With the help of 25 in-depth face-to-face interviews with CEO probing their managerial experience and evaluation of the relevance of Wilson’s criteria upon their success, wedemonstrate the constant reference to evolutionary biology allowing a goodunderstanding of successful leadership and governance of biotech start-ups. All references by CEO to analogies between cell and molecular biology and companiesare listed, supporting the comparison of the firm with living organisms. Our work suggests directions for organizational and personal development arising fromthree key sociobiological attributes of noticeable importance in management: cohesion,connectivity, adaptive demography. Sampling restrained to biotech companies does notallow for extension to all young companies, but provides interesting insights intomanagement behavior by all founding CEO. Our results may help reexamine how CEO are creating and managing their teams for abetter collective efficacy.

Sleep is a behavioral condition fraught with mystery. Its definition—either a suite of diagnostic behavioral characters, electrophysiological signatures, or a combination of the two—varies in the literature and lacks an over-arching purpose. In spite of these vagaries, sleep supports a large and dynamic research community studying the mechanisms, ontogeny, possible functions and, to a lesser degree, its evolution across vertebrates and in a small number of invertebrates. Sleep has been described and examined in many social organisms, including eusocial honey bees (Apis mellifera), but the role of sleep within societies has rarely been addressed in non-human animals. I investigated uniquely social aspects of sleep within honey bees by asking basic questions relating to who sleeps, when and where individuals sleep, the flexibility of sleep, and why sleep is important within colonies of insects. First, I investigated caste-dependent sleep patterns in honey bees and report that younger workers (cell cleaners and nurse bees) exhibit arrhythmic and brief sleep bouts primarily while inside comb cells, while older workers (food storers and foragers) display periodic, longer sleep bouts primarily outside of cells. Next, I mapped sleep using remote thermal sensing across colonies of honey bees after introducing newly eclosed workers to experimental colonies and following them through periods of their adult lives. Bees tended to sleep outside of cells closer to the edge of the hive than when asleep inside cells or awake, and exhibited caste-dependent thermal patterns, both temporally and spatially. Wishing to test the flexibility of sleep, I trained foragers to a feeder and made a food resource available early in the morning or late in the afternoon. The bees were forced to shift their foraging schedule, which consequently also shifted their sleep schedule. Finally, I sleep-deprived a subset of foragers within a colony by employing a magnetic “insominator” to test for changes in their signaling precision. Sleep-deprived foragers exhibited reduced precision when encoding direction information to food sources in their waggle dances. These studies reveal patterns and one possible purpose of sleep in the context of a society. / text

nÃo hà / A presente tese estuda a possÃvel interface entre a sociologia e a biologia evolutiva (representada pela neurociÃncia). Com esse objetivo, fizemos a reconstituiÃÃo das afinidades entre as Ãreas desde o nascimento de ambas, no sÃculo XIX, com Durkheim e Darwin, atà o aparecimento da sociobiologia e da neurociÃncia, cujo fio condutor foi a relaÃÃo entre a seleÃÃo natural e cultural adaptativa e a evoluÃÃo do cÃrebro. Em primeiro lugar, procuramos responder as questÃes principais de pesquisa sobre a intersecÃÃo entre as Ãreas e sobre a relaÃÃo entre o processo de socializaÃÃo e o de exuberÃncia sinÃptica do cÃrebro humano. Em segundo lugar, procuramos identificar a expressÃo empÃrica destes processos entre os adolescentes/jovens que estÃo concluindo o ensino fundamental. Finalmente, avaliamos como o conceito de socializaÃÃo està sendo trabalhado no ensino mÃdio, apÃs o retorno da obrigatoriedade do ensino de sociologia em 2008, levando em consideraÃÃo que o pÃblico desse nÃvel de ensino està vivendo intensa reestruturaÃÃo cerebral que o prepara para a vida adulta. A sustentaÃÃo teÃrica da tese se fundamentou em autores que nas Ãreas respectivas buscaram a convergÃncia entre as ciÃncias, dentre os quais: Richard Dawkins e a teoria dos âmemesâ como replicadores culturais, que embasou o que denominamos seleÃÃo cultural adaptativa; e Edgar Morin e a teoria da âjunÃÃo epistemolÃgicaâ entre as ciÃncias sociais e as disciplinas derivadas da biologia evolutiva. / This thesis studies the possible interface between sociology and evolutionary biology (represented by neuroscience). To this end, we made the reconstitution of the affinities between areas since the birth of both the nineteenth century, with Durkheim and Darwin until the appearance of sociobiology and neuroscience, whose leitmotif was the relationship between natural selection and adaptive cultural selection and brain evolution. First, we seek to answer key research questions about the intersection between areas and the relationship between the process of socialization and the synaptic exuberance of the human brain. Second, we seek to identify the empirical expression of these processes among adolescents/young people are completing primary school. Finally, we evaluate how the concept of socialization is being worked on in high school, after the return of compulsory sociology study in 2008, taking into account the public this level of education is experiencing intense brain restructuring that prepares you for adulthood. The theoretical support of the thesis was based on authors who in their areas sought convergence of sciences, among them: Richard Dawkins and the theory of "memes" as cultural replicators, that based what we call adaptive cultural selection; and Edgar Morin and the theory of "epistemological junction" between the social sciences and the disciplines derived from evolutionary biology.

The purpose of this work is to answer the basic question, if the economics can explore the animal behaviour. At first the determination of the subject of economics is needed. It means to point out, what should economics deal with. I will come to the point of the problem of purposeful action, the problem of rationality and exchange. Consequently I will explore, if it is possible to apply this theory to animal behaviour and if such an application has a sense. I will advert to the problems, what are made by the economists in their opinions of the animal behaviour and on argumentation why the animal behaviour is not a subject of economics.

I develop social evolution theory to study the evolution of cooperation as follows: (1) Many organisms undergo a dispersal phase prior to breeding; I demonstrate that knowing ones dispersal status aids the evolution of helping (by non-dispersers) and harming (by dispersers). (2) Policing driven by group-benefits may be selected to enforce cooperation in human and animal societies. I extend existing theory to show that policing may be harder to evolve that previously thought, but that it is maintained more readily than it evolves. (3) Archeological and anthropological evidence suggests that warfare was prevalent during our evolution. I show that, contrary to previous suggestions, between-group competition can favour any social behaviour (pro-social or anti-social) so long as it helps the group compete, and that such traits can be altruistic or mutually beneficial. (4) Reproductive leveling is analogous to policing; in the human literature there is doubt as to whether it can evolve. I extend my previous work to consider the coevolution of culturally and genetically inherited traits for reproductive leveling and selfishness. I find that cooperation can evolve between non-kin if they share the same culture. (5) Monogamy is thought to favour the evolution of cooperative breeding. I show that in the simplest case, because of the cost of competition between non-dispersing siblings, the level of promiscuity has little or no effect on the evolution of cooperation. (6) Spatial structure (limited dispersal) is thought to favour the evolution of inter-specific mutualisms as it aligns the partners’ interests. I consider the case of plant-fungi mutualisms and show that spatial structure can disfavour cooperation if it limits the potential fungal partners available to the plant.

The study of sex allocation is one of the most successful areas in evolutionary biology: its theoretical predictions have been supported by experimental, observational and comparative approaches. Here, I develop sex allocation theory as follows: (1) I use fertility insurance theory to predict the sex ratio strategy of the malaria parasite, in response to human medical interventions that increase mortality and decrease fertility of the parasite’s various sexual stages; (2) Haplodiploidy has been suggested as a driver of the evolution of eusociality, as under this genetic system a female may be more related to her sister than to her own offspring. I examine a model considering queen versus worker control over the sex ratio of the colony and show that haplodiploidy alone does not explain the evolution of helping; (3) I follow up this study of the haplodiploidy hypothesis by examining the idea that split-sex ratios may favour the evolution of eusociality in haplodiploid species. I study the two mechanisms of split sex ratios, that are found in natural populations and may have been important in the transition to eusociality: queen virginity and queen replacement. I focus on the impact of worker reproduction by considering the effect of woker producing a fraction of the colony offspring and by considering variation in the workers’ offspring sex ratio. My analysis shows that worker reproduction does not promote the evolution of helping in haplodiploid species; (4) I examine the evolution and function of a sterile soldier caste in parasitoid wasps from the genus Encyrtidae. Two main functions have been hypothesized for the emergence of soldiers: spiteful mediation of a sex ratio conflict in mixed-sex broods, and altruistic protection and 7 facilitation of the development of relatives. I develop a model considering variation in the oviposition behaviour of females, that may produce single-sex or mixed-sex broods. I show that, in accordance with previous theory, females are expected to produce more soldiers than males, under the sex ratio conflict hypothesis. I also show that one of the consequences of this costly conflict is that females are favoured to produce single-sex broods over mixed-sex broods.

In this thesis I analyze the evolutionary ethics and propose a new perspective that develops on the notion of altruism. The view of evolutionary ethics, especially the sociobiological account, has some problems. The most important philosophical problem is the &ldquo / is-ought&rdquo / problem which refers to the question as to whether moral propositions can be inferred from factual statements. In order to overcome this problem I suggest a different reading of the notion of altruism namely &ldquo / altruistic behavior practice&rdquo / that refers to norms, habits and repeated actions that provide the sustainability of society. The notion of altruistic behavior practice is presented and evaluated with the help of Alasdair MacIntyre&rsquo / s and John Dewey&rsquo / s moral philosophy. The moral views of these two philosophers are based on human practices and habitual formations in society. In this respect, evolutionary ethics and the notion of altruism are re-established on the basis of human practices and habitual modes of socialization.

Analisou-se a composição, estrutura e padrão sazonal de formação dos bandos mistos de aves em um remanescente de floresta paludosa na planície costeira do Rio Grande do Sul, sul do Brasil. Efetuaram-se amostragens mensais de fevereiro de 2005 a janeiro de 2006, com observações ocasionais em 2004 e janeiro de 2005. Pontos de contagem foram utilizados para estimar a abundância relativa das espécies integrantes dos bandos, e transecções foram efetuadas para as observações dos bandos mistos. Quarenta e sete espécies foram registradas como participantes em 92 bandos amostrados. O número de indivíduos foi positivamente correlacionado com o número de espécies dentro dos bandos. O pool dos não-passeriformes foi pobremente representado nos bandos, enquanto passeriformes suboscines e oscines foram igualmente representados na riqueza dos bandos. Onívoros e insetívoros foram bem representados, mas os nectarívoros tiveram apenas uma espécie integrante; frugívoros e granívoros foram ausentes nos bandos mistos.Espécies migratórias foram pouco representadas nos bandos, como havia sido verificado para outras áreas de Floresta Atlântica. A regularidade de uma espécie em integrar bandos mistos foi uma função de sua abundância relativa, e as espécies mais conspícuas tenderam a ser os integrantes mais regulares. Detectaram-se quinze co-ocorrências significativas em 153 combinações possíveis (10%), onze delas positivas e quatro negativas. Nenhum tipo estrutural de bandos foi distinguido por meio de análise de agrupamento. Associações positivas e negativas talvez estejam relacionadas a similaridades e dissimilaridades na distribuição vertical de cada par de espécies. Os atributos de freqüência, tamanho e riqueza dos bandos foram os menores encontrados em qualquer outro estudo na Floresta Atlântica. Os bandos formaram-se o ano inteiro no Faxinal, mas a freqüência, o tamanho e a riqueza dos bandos diferiram significativamente entre os meses e entre as estações. Osvalores máximos destes três atributos foram encontrados na estação não-reprodutiva, lembrando os padrões encontrados em outros locais da Floresta Atlântica. A combinação de um pequeno grupo de espécies abundantes e bem distribuídas, junto com uma baixa riqueza local talvez torne a estrutura dos bandos mistos no Faxinal menos variável do que em outros locais da Floresta Atlântica. / The composition, structure and seasonal pattern of formation of mixed-species bird flocks were analyzed in a swamp forest remnant in the coastal plain of Rio Grande do Sul state, southern Brazil. Field work was carried out monthly from February 2005 to January 2006, plus occasional observations in 2004 and January 2005. Point counts estimated the relative abundance of flocking species, and transects were performed to access data relative to the flocks. Forty seven species were recorded as participants in 92 flocks sampled. The number of individuals was positively correlated with the number of species within the flocks. Non-passerines pool is less represented in the flocks, while suboscines and oscines were equally represented in the flock richness. Omnivores and insectivores were well represented, but nectarivores had only one flocking species while frugivores and granivores were absent in flocks. Migrants had low representation on the composition and structure of flocks, as predicted for lowland Atlantic Forest areas. The regularity of a given species in to integrate flocks was a function of its relative abundance, and the species more conspicuous tended to be the more regular flock joiners. Fifteen significant co-occurrences of 153 possible pairs (10%) were detected, eleven positively and four negatively associated. None structural type of flocks was recognized through cluster analyses. Positive and negative associations were better explained by similarities or dissimilarities on vertical distribution of each species pair. The attributes of frequency, flock size and flock richness were the lowest found in any study on Atlantic Forest. Flocks were formed throughout the year at Faxinal, but frequency, flock size and flock richness differed significantly between months and between seasons. Higher values of these three attributes were found in non-breeding season, reaching the pattern found elsewhere in Atlantic Forest. The combination of a little set of abundant and well distributed speciesand low richness perhaps makes the flock structure at Faxinal less variable than that of Atlantic Forest elsewhere.