Zobrazeno 1 - 10
of 30
pro vyhledávání: '"Maria I. Sandell"'
Publikováno v:
Physiological and Biochemical Zoology. 86:333-345
Permanent offspring modification through maternal hormone transfer is thought to be a tool for mothers to influence life-history trajectories of individual offspring. In birds, yolk hormones influence numerous aspects of the offspring's physiology, i
Publikováno v:
Functional Ecology. 24:1031-1036
P>1. Avian embryos depend on the incubating parent to provide a thermal environment suitable for embryogenesis, but as the maintenance of optimal incubation temperatures is energetically costly, an incubating bird often must trade off embryonic inves
Publikováno v:
Behavioral Ecology and Sociobiology. 64:717-727
Hormone-mediated maternal effects play an important role in the formation of a differentiated phenotype. They have been shown to influence a wide array of offspring traits, both early in life and in adulthood. One important offspring trait that is un
Autor:
Anna Nilsson, Maria I. Sandell
Publikováno v:
Biology Letters. 5:480-483
The hormone corticosterone (CORT) is an important component of a bird’s response to environmental stress, but it can also have negative effects. Therefore, birds on migration are hypothesized to have repressed stress responses (migration-modulation
Publikováno v:
Journal of Experimental Biology. 212:815-822
SUMMARYMaternally derived androgens have been shown to influence offspring phenotype in various ways. In birds, the benefits of prenatal androgen exposure, such as increased competitiveness and accelerated growth in nestlings, have been suggested to
Publikováno v:
Behavioral Ecology and Sociobiology. 62:1665-1677
The optimal mating system is rarely the same for males and females—whereas males usually benefit from attracting additional females to the territory, this could incur costs for the resident female. Females should therefore prevent prospecting femal
Autor:
Maria I. Sandell, Michael Tobler
Publikováno v:
Hormones and Behavior. 52:640-645
Individual differences in animal behavior can be attributed to genetic as well as non-genetic influences. One mechanism by which the behavioral phenotype of an individual can be shaped is via transmission of maternal sex steroids. In this study, we e
Autor:
Maria I. Sandell
Publikováno v:
Behavioral Ecology and Sociobiology. 62:255-262
In the European starling, Sturnus vulgaris, optimal mating systems differ between males and females. Males gain from polygyny, whereas monogamy increases female fitness. The cost of polygyny to females lead to intense female–female competition, and
Publikováno v:
Journal of Avian Biology. 38:284-290
Publikováno v:
Oecologia. 151:731-740
Maternal hormones can have substantial phenotypic effects in the progeny of many vertebrates. It has been proposed that mothers adaptively adjust hormone levels experienced by particular young to optimize their reproductive output. In birds, systemat