Effects of maternal age and stress on offspring quality in a viviparous fly

Lord Jennifer S., Leyland Robert, Haines Lee R., Barreaux Antoine, Bonsall Michael B., Torr Stephen J., English Sinead. 2021. Effects of maternal age and stress on offspring quality in a viviparous fly. Ecology Letters, 24 (10) : 2113-2122.

Url - autres données associées : https://github.com/jenniesuz/tsetse_senescence.git

Quartile : Outlier, Sujet : ECOLOGY

Résumé : Many organisms show signs of deterioration with age in terms of survival and reproduction. We tested whether intraspecific variation in such senescence patterns can be driven by resource availability or reproductive history. We did this by manipulating nutritional stress and age at first reproduction and measuring age-dependent reproductive output in tsetse (Glossina morsitans morsitans), a viviparous fly with high maternal allocation. Across all treatments, offspring weight followed a bell-shaped curve with maternal age. Nutritionally stressed females had a higher probability of abortion and produced offspring with lower starvation tolerance. There was no evidence of an increased rate of reproductive senescence in nutritionally stressed females, or a reduced rate due to delayed mating, as measured by patterns of abortion, offspring weight or offspring starvation tolerance. Therefore, although we found evidence of reproductive senescence in tsetse, our results did not indicate that resource allocation trade-offs or costs of reproduction increase the rate of senescence.

Mots-clés Agrovoc : Glossina morsitans, effet maternel, nutrition maternelle, stress, physiologie de la reproduction, qualité, Glossina

Mots-clés libres : Maternal allocation, Senescence, Tsetse, Ecology, Nutrition

Agences de financement hors UE : Biotechnology and Biological Sciences Research Council

Auteurs et affiliations

• Lord Jennifer S., Liverpool School of Tropical Medicine (GBR) - auteur correspondant
• Leyland Robert, Liverpool School of Tropical Medicine (GBR)
• Haines Lee R., Liverpool School of Tropical Medicine (GBR)
• Barreaux Antoine, University of Bristol (GBR) ORCID: 0000-0001-5822-761X
• Bonsall Michael B., University of Oxford (GBR)
• Torr Stephen J., Liverpool School of Tropical Medicine (GBR)
• English Sinead, University of Bristol (GBR) - auteur correspondant

Source : Cirad-Agritrop (https://agritrop.cirad.fr/609730/)

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