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Content archived on 2024-06-18

The independent and interactive effects of multiple stressors on reproduction and development in cetaceans

Objective

Low reproduction rates (26% pregnancy rates, 3-4 year calving intervals) in two geographically isolated common dolphin Delphinus delphis populations in North East Atlantic (NEA) and New Zealand (NZ) have been found compared to other common dolphin populations where higher pregnancy rates (>40%) exist. The causes of these low rates of reproduction in NEA and NZ are not known but contributory/causal factors may include nutritional stress, immune suppression, disease, pollutants and density dependent population effects. Studies that quantify the complex interacting and potentially confounding effects of multiple stressors on reproduction and development in cetaceans (including synergistic, antagonistic, additive and temporal effects) are urgently required. This project will systematically quantify a range of potential causal factors underpinning the low female fecundity rates in NEA and NZ populations by directly assessing stress and reproductive hormone levels, nutritional condition, reproductive and health status using state of the art (histo)pathological, molecular and other analytical techniques on samples obtained from a large number of postmortem examinations. Interactions between these and other potential causal factors and mating strategies in both sexes derived from behavioural studies of wild common dolphins in Hauraki Gulf, New Zealand will be robustly tested statistically at individual and population levels.

Fields of science (EuroSciVoc)

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Topic(s)

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Call for proposal

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FP7-PEOPLE-2010-IOF
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Funding Scheme

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MC-IOF - International Outgoing Fellowships (IOF)

Coordinator

Zoological Society of London, Institute of Zoology
EU contribution
€ 248 811,20
Address
Regent's Park
NW1 4RY London
United Kingdom

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Region
London Inner London — West Westminster
Activity type
Research Organisations
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Total cost

The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.

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