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Het OWA, het open archief van het Waterbouwkundig Laboratorium heeft tot doel alle vrij toegankelijke onderzoeksresultaten van dit instituut in digitale vorm aan te bieden. Op die manier wil het de zichtbaarheid, verspreiding en gebruik van deze onderzoeksresultaten, alsook de wetenschappelijke communicatie maximaal bevorderen.

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one publication added to basket [281564]

Nutritional stress causes heterogeneous relationships with multi-trait FA in Lesser black-backed gull chicks: an aviary experiment Gupta, T.; Santos, C.S.A.; Sotillo, A.; De Neve, L.; Stienen, E.W.M.; Müller, W.; Lens, L. (2016). Nutritional stress causes heterogeneous relationships with multi-trait FA in Lesser black-backed gull chicks: an aviary experiment. Symmetry 8(11): a133 [1-12]. https://dx.doi.org/10.3390/sym8110133 In: Symmetry. MDPI: Basel. ISSN 2073-8994; e-ISSN 2073-8994, meer

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Beschikbaar in	Auteurs
VLIZ: Open access 296711 [ download pdf ]

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Trefwoorden

Biomarkers Larus fuscus Linnaeus, 1758 [WoRMS] Marien/Kust

Author keywords

Fluctuating asymmetry; nutritional stress; energetic constraints

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Auteurs		Top
Gupta, T., meer Santos, C.S.A., meer Sotillo, A., meer De Neve, L., meer	Stienen, E.W.M. Müller, W., meer Lens, L., meer

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Abstract

Environmental stressors have the potential to induce perturbations in the development of young individuals, leading to aberrant and unstable development. This may manifest as fluctuating asymmetry (FA; small, non-directional changes in the bilateral symmetry of morphological traits). Although widely regarded as a proxy for stress effects, the use of FA as a biomarker is still a topic of much debate. We investigated the applicability of FA as an indicator of nutritional stress (brought about by energetic constraints) by experimental manipulation of the diet composition and quantity during the growth of Lesser Black-backed Gull (Larus fuscus) chicks. FA as an endpoint was measured across the tarsus, wing and 10th primary feather when chicks reached 30 days of age. Although levels of asymmetry were found to increase with stress in the feather, relationships with tarsus and wing FA were mixed and mostly non-significant. Furthermore, we did not find any correlations in unsigned FA between traits, indicating the absence of organism-wide asymmetry. Our study was therefore unable to find unequivocal evidence in support of the application of FA as a reliable estimator of nutritional stress.

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