Now showing items 1-10 of 172
Brood parasitism disproportionately increases nest provisioning and helper recruitment in a cooperatively breeding bird
Obligate avian brood parasites lay their eggs in nests of other species (hosts), which raise parasitic young. Parasitic nestlings are likely to influence host's parental behaviours as they typically beg for food more ...
Coevolutionary arms race between a specialist brood parasite, the Screaming Cowbird, and its host, the Grayish Baywing
Interspecific brood parasites exploit the parental care of host species. This exploitation entails fitness costs for the hosts, which favor the evolution of antiparasitic defenses. Host defenses select for counter-defenses ...
Consecuencias teóricas del concepto de parasitismo intra-específicoTheoretical consequences of the concept 'intra-specific parasitism'
(Universidad Autónoma Metropolitana-Iztapalapa, 2017-10)
When parasitism is defined, it is customary to emphasize that it is about an inter-specific relation, i.e., between individuals of two different species. Here we critically examine that assumption and we turn to the concept ...
A novel method of rejection of brood parasitic eggs reduces parasitism intensity in a cowbird host
(The Royal Society, 2013-03)
The hosts of brood parasitic birds are under strong selection pressure to recognize and remove foreign eggs from their nests, but parasite eggs may be too large to be grasped whole and too strong to be readily pierced by ...
Parasitic Behaviour of Interspecific Brood Parasitic Females
(Springer Nature Switzerland AG, 2018)
Interspecific avian brood parasites have to solve unique problems associated with their reproductive habit: they need to recognize potential hosts, search for and locate their nests, monitor nests progress and return to ...
The economics of nestmate killing in avian brood parasites: A provisions trade-off
(Oxford Univ Press Inc, 2012-01)
Some brood parasites kill all their host's offspring shortly after hatching, whereas others are tolerant and are reared in mixed host-parasite broods. This difference may arise because nestling parasites face a "provisions ...
Thick eggshells of brood parasitic cowbirds protect their eggs and damage host eggs during laying
(Oxford University Press, 2018-07)
Brood parasites lay thick-shelled eggs and numerous hypotheses have been proposed to explain the significance of this trait. We examined whether thick eggshells protect the parasite egg during laying events. We used eggs ...
The wages of violence: mobbing by mockingbirds as a frontline defence against brood-parasitic cowbirds
For many hosts of brood-parasitic birds, their frontline of defence is to mob adult parasites that approach the nest. Mobbing is commonly interpreted as an adaptation to prevent the parasite from laying, although to date ...
Genetic evidence of extra-pair paternity and intraspecific brood parasitism in the monk parakeet
(Biomed Central Ltd, 2013-11)
Introduction: The monk parakeet (Myiopsitta monachus) is a widespread invasive species native to southern South America that has become established in many regions of the world. Monk parakeets breed in a large, fully ...
Intra-specific brood parasitism revealed by DNA micro-satellite analyses in a sub-oscine bird, the vermilion flycatcher
(Sociedad de Biología de Chile, 2008)