Estimating fitness consequences of dispersal:a road to know-where? Non-random dispersal and the underestimation of dispersers fitness
| العنوان: | Estimating fitness consequences of dispersal:a road to know-where? Non-random dispersal and the underestimation of dispersers fitness |
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| المؤلفون: | Blandine Doligez, Tomas Pärt |
| المساهمون: | Evolution, adaptation et comportement, Département écologie évolutive [LBBE], Laboratoire de Biométrie et Biologie Evolutive - UMR 5558 (LBBE), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Recherche en Informatique et en Automatique (Inria)-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Recherche en Informatique et en Automatique (Inria)-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Centre National de la Recherche Scientifique (CNRS)-Laboratoire de Biométrie et Biologie Evolutive - UMR 5558 (LBBE), Université de Lyon-Université de Lyon-Institut National de Recherche en Informatique et en Automatique (Inria)-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Centre National de la Recherche Scientifique (CNRS) |
| المصدر: | Journal of Animal Ecology Journal of Animal Ecology, Wiley, 2008, 77, pp.1199-1211 Journal of Animal Ecology, 2008, 77, pp.1199-1211 |
| بيانات النشر: | HAL CCSD, 2008. |
| سنة النشر: | 2008 |
| مصطلحات موضوعية: | 0106 biological sciences, Male, [SDV.OT]Life Sciences [q-bio]/Other [q-bio.OT], Biology, 010603 evolutionary biology, 01 natural sciences, Life history theory, Birds, 03 medical and health sciences, Juvenile, Animals, Computer Simulation, Ecology, Evolution, Behavior and Systematics, 030304 developmental biology, Demography, 0303 health sciences, Behavior, Animal, Ecology, Reproduction, Heritability, Confidence interval, Potential difference, Biological dispersal, Animal Science and Zoology, Philopatry, Animal Migration, Female |
| الوصف: | 1. Many studies investigating fitness correlates of dispersal in vertebrates report dispersers to have lower fitness than philopatric individuals. However, if dispersers are more likely to produce dispersing young or are more likely to disperse again in the next year(s) than philopatric individuals, there is a risk that fitness estimates based on local adult survival and local recruitment will be underestimated for dispersers. 2. We review the available empirical evidence on parent-offspring resemblance and individual lifelong consistency in dispersal behaviour, and relate these studies to recent studies of fitness correlates of dispersal in vertebrates. 3. Of the 12 studies testing directly for parent-offspring resemblance in dispersal propensity, five report a significant resemblance. The average effect size (r) of parent-offspring resemblance in dispersal was 0.15 [95% confidence interval (CI) = 0.07-0.22], with no difference between the sexes (average weighted effect size of 0.12 (0.08-0.16) and 0.16 (0.11-0.20) for females and males, respectively). Only three studies report data on within-individual consistency in dispersal propensity, of which two suggest dispersers to be more likely to disperse again. 4. To assess the magnitude of fitness underestimation expected for dispersing individuals depending on the heritability of dispersal distance and study area size, we used a simulation approach. Even when study area size is 10 times the mean dispersal distance, local recruitment per breeding event may be underestimated by 4-10%, generating a potential difference of 4-60% in average lifetime production of recruits between dispersing and philopatric individuals, with larger differences in long-lived species. 5. Estimates of both fitness correlates of dispersal and parent-offspring resemblance or within-individual consistency in dispersal behaviour have been reported for 11 species. Although some comparisons suggest genuine differences in fitness components between philopatric and dispersing individuals, others, based on adult and juvenile survival, are open to the alternative explanation of biased fitness estimates. 6. We list three potential ways of reducing the risk of making wrong inferences on biased fitness estimates due to such non-random dispersal behaviour between dispersing and philopatric individuals: (a) diagnosing effects of non-random dispersal, (b) reducing the effects of spatially limited study area and (c) performing controlled experiments. |
| اللغة: | English |
| تدمد: | 0021-8790 1365-2656 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f59bcd353509fffb1a6a2d6526b4a869Test https://hal.archives-ouvertes.fr/hal-00428100Test |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....f59bcd353509fffb1a6a2d6526b4a869 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 00218790 13652656 |
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