Parent Offspring Conflict
Mostrando 1-9 de 9 artigos, teses e dissertações.
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1. Repercussões da Conjugalidade em Sintomas Internalizantes e Externalizantes em Filhos Adolescentes
Resumo A conjugalidade dos cuidadores reverbera no desenvolvimento dos filhos, entretanto, especificidades nessa relação ainda necessitam estudos nacionais. Investigou-se a percepção de adolescentes sobre o relacionamento conjugal de seus cuidadores e quais dimensões da conjugalidade repercutem em sintomas internalizantes e externalizantes dos mesmos.
Psic.: Teor. e Pesq.. Publicado em: 16/05/2019
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2. Parental care behavior in the Guiana dolphin, Sotalia guianensis (Cetacea: Delphinidae), in Ilha Grande Bay, southeastern Brazil
Parental care is any form of parental behavior that increases offspring fitness. To the authors' knowledge, this study is the first to analyze the intensity of parental care in the Guiana dolphin, Sotalia guianensis (van Bénéden, 1864). The objectives of this study are as follows: 1) to quantify the degree of parental care in S. guianensis in Ilha Grande B
Zoologia (Curitiba). Publicado em: 2013-02
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3. "O avunculado na Antropologia Evolutiva: uma abordagem intercultural" / "The avunculate in the evolutionary anthropology: a cross cultural survey"
The present work proposes to account for cultural variability in connection to human family organization, through Darwins theories of natural selection and sexual selection. It is also founded on evidence based on the comparison of ethnographic data of diverse human societies. It intends to demonstrate that there is a significant alteration in the behavior
Publicado em: 2007
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4. A growth cost of begging in captive canary chicks
Nestling birds solicit food from adults by using begging displays that appear paradoxically costly and wasteful. Theoretical work suggests that the evolution of such exuberant offspring behavior reflects parent–offspring conflict over the supply of parental investment. Originally, extravagant begging was seen as a means of psychological trickery by wh
The National Academy of Sciences.
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5. Instability of signaling resolution models of parent–offspring conflict
Recent signaling resolution models of parent–offspring conflict have provided an important framework for theoretical and empirical studies of communication and parental care. According to these models, signaling of need is stabilized by its cost. However, our computer simulations of the evolutionary dynamics of chick begging and parental investment show th
The National Academy of Sciences.
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6. DNA fingerprinting analysis of parent-offspring conflict in a bee.
Demonstrating the importance of haplodiploidy in the evolution of eusociality among the Hymenoptera (bees, wasps, and ants) requires estimation of four parameters: relatedness between cooperating individuals, effective mating frequency, sex ratio, and rates of worker reproduction. Multilocus DNA fingerprinting techniques permitted the precise determination o
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7. The evolution of begging: Signaling and sibling competition
In many species, young solicit food from their parents, which respond by feeding them. Because of the difference in genetic make-up between parents and their offspring and the consequent conflict, this interaction is often studied as a paradigm for the evolution of communication. Existent theoretical models demonstrate that chick signaling and parent re
The National Academy of Sciences of the USA.
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8. No sex in fungus-farming ants or their crops
Asexual reproduction imposes evolutionary handicaps on asexual species, rendering them prone to extinction, because asexual reproduction generates novel genotypes and purges deleterious mutations at lower rates than sexual reproduction. Here, we report the first case of complete asexuality in ants, the fungus-growing ant Mycocepurus smithii, where queens rep
The Royal Society.
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9. Disruption of the imprinted Grb10 gene leads to disproportionate overgrowth by an Igf2-independent mechanism
To investigate the function of the Grb10 adapter protein, we have generated mice in which the Grb10 gene was disrupted by a gene-trap insertion. Our experiments confirm that Grb10 is subject to genomic imprinting with the majority of Grb10 expression arising from the maternally inherited allele. Consistent with this, disruption of the maternal allele re
National Academy of Sciences.