Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Experimentally induced antipredator responses are mediated by social and environmental factors
Groenewoud, Frank ; Kingma, Sjouke A. ; Bebbington, Kat ; Richardson, David S. ; Komdeur, Jan - \ 2019
Behavioral Ecology 30 (2019)4. - ISSN 1045-2249 - p. 986 - 992.
Antipredator defense - Nest defense - Nest predation - Parental investment - Seychelles warbler - Trade-off

Nest predation is a common cause of reproductive failure for many bird species, and various antipredator defense behaviors have evolved to reduce the risk of nest predation. However, trade-offs between current reproductive duties and future reproduction often limit the parent’s ability to respond to nest predation risk. Individual responses to experimentally increased nest predation risk can give insights into these trade-offs. Here, we investigate whether social and ecological factors affect individual responses to predation risk by experimentally manipulating the risk of nest predation using taxidermic mounts in the cooperative breeding Seychelles warbler (Acrocephalus sechellensis). Our results show that dominant females, but not males, alarm called more often when they confront a nest predator model alone than when they do so with a partner, and that individuals that confront a predator together attacked more than those that did so alone. Dominant males increased their antipredator defense by spending more time nest guarding after a presentation with a nest predator, compared with a nonpredator control, but no such effect was found for females, who did not increase the time spent incubating. In contrast to incubation by females, nest guarding responses by dominant males depended on the presence of other group members and food availability. These results suggest that while female investment in incubation is always high and not dependent on social and ecological conditions, males have a lower initial investment, which allows them to respond to sudden changes in nest predation risk.

Breeders that receive help age more slowly in a cooperatively breeding bird
Hammers, Martijn ; Kingma, Sjouke A. ; Spurgin, Lewis G. ; Bebbington, Kat ; Dugdale, Hannah L. ; Burke, Terry ; Komdeur, Jan ; Richardson, David S. - \ 2019
Nature Communications 10 (2019)1. - ISSN 2041-1723

Helping by group members is predicted to lead to delayed senescence by affecting the trade-off between current reproduction and future survival for dominant breeders. Here we investigate this prediction in the Seychelles warbler, Acrocephalus sechellensis, in which mainly female subordinate helpers (both co-breeders and non-breeding helpers) often help dominants raise offspring. We find that the late-life decline in survival usually observed in this species is greatly reduced in female dominants when a helper is present. Female dominants with a female helper show reduced telomere attrition, a measure that reflects biological ageing in this and other species. Finally, the probability of having female, but not male, helpers increases with dominant female age. Our results suggest that delayed senescence is a key benefit of cooperative breeding for elderly dominants and support the idea that sociality and delayed senescence are positively self-reinforcing. Such an effect may help explain why social species often have longer lifespans.

100 key research questions for the post-2015 development agenda
Oldekop, Johan A. ; Fontana, Lorenza B. ; Grugel, Jean ; Roughton, Nicole ; Adu-Ampong, Emmanuel A. ; Bird, Gemma K. ; Dorgan, Alex ; Vera Espinoza, Marcia A. ; Wallin, Sara ; Hammett, Daniel ; Agbarakwe, Esther ; Agrawal, Arun ; Asylbekova, Nurgul ; Azkoul, Clarissa ; Bardsley, Craig ; Bebbington, Anthony J. ; Carvalho, Savio ; Chopra, Deepta ; Christopoulos, Stamatios ; Crewe, Emma ; Dop, Marie Claude ; Fischer, Joern ; Gerretsen, Daan ; Glennie, Jonathan ; Gois, William ; Gondwe, Mtinkheni ; Harrison, Lizz A. ; Hujo, Katja ; Keen, Mark ; Laserna, Roberto ; Miggiano, Luca ; Mistry, Sarah ; Morgan, Rosemary J. ; Raftree, Linda L. ; Rhind, Duncan ; Rodrigues, Thiago ; Roschnik, Sonia ; Senkubuge, Flavia ; Thornton, Ian ; Trace, Simon ; Ore, Teresa ; Valdés, René Mauricio ; Vira, Bhaskar ; Yeates, Nicola ; Sutherland, William J. - \ 2016
Development Policy Review 34 (2016)1. - ISSN 0950-6764 - p. 55 - 82.
International development - Knowledge co-production - Millennium Development Goals - Priority setting - Research questions - Sustainable Development Goals

The Sustainable Development Goals (SDGs) herald a new phase for international development. This article presents the results of a consultative exercise to collaboratively identify 100 research questions of critical importance for the post-2015 international development agenda. The final shortlist is grouped into nine thematic areas and was selected by 21 representatives of international and non-governmental organisations and consultancies, and 14 academics with diverse disciplinary expertise from an initial pool of 704 questions submitted by 110 organisations based in 34 countries. The shortlist includes questions addressing long-standing problems, new challenges and broader issues related to development policies, practices and institutions. Collectively, these questions are relevant for future development-related research priorities of governmental and non-governmental organisations worldwide and could act as focal points for transdisciplinary research collaborations.

A project of hegemonic masculinity: The scaling and governance of irrigation development in Nepal
Liebrand, Janwillem - \ 2012
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