Results 21 to 30 of about 145,085 (286)
Oxidative stress mediates physiological costs of begging in magpie (Pica pica) nestlings. [PDF]
PLoS ONE, 2012 BACKGROUND: Theoretical models predict that a cost is necessary to guarantee honesty in begging displays given by offspring to solicit food from their parents. There is evidence for begging costs in the form of a reduced growth rate and immunocompetence.
Gregorio Moreno-Rueda +4 more
doaj +1 more source
Common Cuckoo Nestling Adapts Its Begging Behavior to the Alarm Signaling System of a Host
Frontiers in Ecology and Evolution, 2022 Cuckoo nestlings thrive as avian brood parasites. To acquire sufficient food from the host parents, cuckoo nestlings generally make louder begging calls than host nestlings, but this may cause them to be more likely to attract the attention of predators.
Jiaojiao Wang +5 more
doaj +1 more source
Early-life begging effort reduces adult body mass but strengthens behavioural defence of the rate of energy intake in European starlings [PDF]
Royal Society Open Science, 2018 Animals require strategies for coping with periods when food is scarce. Such strategies include storing fat as a buffer, and defending the rate of energy intake by changing foraging behaviour when food becomes difficult to obtain. Storage and behavioural
Jonathon Dunn +3 more
doaj +1 more source
Angewandte Chemie, EarlyView.Association of the L‐cluster with the nitrogenase assembly proteins NifEN (NifENL) or NifB (NifBL) intrinsically endows these proteins with N2‐reducing activity, enabling in vitro N2‐reduction by NifENL and NifBL when supplied with chemical reductants or photoexcited quantum dots while supporting in vivo N2‐fixation in NifENL‐ and NifENL‐expressing ...
Robert Quechol +4 more
wiley +2 more sources
Ecology and Evolution, 2019 Honest signaling mechanisms can function to appropriate care to hungry offspring and avoid misdirected care of unrelated offspring. Begging, the behavior by which offspring solicit food and parental care, may be an honest signaling mechanism for need, as
Kayla L. Davis +6 more
doaj +1 more source
Rebusque y mendicidad: Muestra de desigualdad y pobreza en Cúcuta, Norte de Santander, Colombia
Apuntes del CENES, 2013 El artículo es una aproximación teórico–reflexiva a la desigualdad y la pobreza en la ciudad de San José de Cúcuta, frontera entre Colombia y Venezuela.
William Rodrigo Avendaño Castro +1 more
doaj +1 more source
On Visible Homelessness and the Micro-Aesthetics of Public Space [PDF]
, 2018 In this article, we investigate the circumstances that have produced the current municipal regulatory approach to homelessness in the City of Melbourne, Victoria, and the ways in which visibly homeless people are policed through a micro-aesthetics of ...
Adams L. +16 more
core +2 more sources
The Auk, 1997 Avian nestlings beg to obtain food (von Haartman 1953), and begging is used increasingly as a model to study game-theoretic problems, the evolution of signaling, and parent-offspring conflict (Godfray 1991, Cotton et al. 1996). A fundamental assumption in these studies is that begging is costly (Godfray 1991). McCarty (1996) recently provided the first
Verhulst, Simon, Wiersma, Popko
openaire +2 more sources
Niños y niñas en el espacio urbano
Nuevo mundo - Mundos Nuevos, 2012 Population growth is the product of mass immigration and the consequent rapid urbanization of towns and villages as Argentina went through in the final decades of the nineteenth century were among the most important advances of the moment.
Yolanda de Paz Trueba
doaj +1 more source
Advances in the management of obesity in dogs [PDF]
, 2009 This article gives a short overview of the management of obesity in dogs and tells you more about the recent introduction of anti-obesity drugs. It is the authors’ opinion that no weight control programme in a veterinary practice can succeed without the ...
Holden, S.L., Ramsey, I.K.
core +2 more sources