Zoeken
Zoeken kan via de modus 'eenvoudig zoeken' (één veld) of uitgebreid via 'geavanceerd zoeken' (meerdere velden). Zo kan je bv. zoeken op een combinatie van een auteursnaam (auteur), een jaartal (jaar) en een documenttype.
Boekenmand
Nuttige resultaten kan je aanvinken en toevoegen aan een mandje. De inhoud hiervan kan je exporteren of afdrukken (naar bv. PDF).
RSS
Op de hoogte blijven van nieuw toegevoegde publicaties binnen uw interessegebied? Dit kan door een RSS-feed (?) te maken van jouw zoekopdracht.
nieuwe zoekopdracht
Costs of thermal adaptation: warm-adapted copepods show increased energetic demands under cold exposure
In: Marine Environmental Research. Applied Science Publishers: Barking. ISSN 0141-1136; e-ISSN 1879-0291, meer
|  |
| Trefwoorden |
|
| Author keywords |
Phenotypic plasticity; Trade-off; Costs; Copepod |
| Auteurs | | Top |
- Relva, J.V.
- Van Colen, C.
- De Troch, M.
|
|
|
| Abstract |
Marine ectotherms have the potential to adapt to ocean warming through evolutionary adaptation and phenotypic plasticity. Both mechanisms are fundamental to ensure species persistence in the face of climate change, but the adaptation-plasticity trade-off hypothesis claims that increased thermal tolerance reduces phenotypic plasticity in thermal tolerance thereby limiting the resilience of these populations to acute temperature variability. However, if such trade-off exists for other traits remains poorly explored. To test this in a marine intertidal ectotherm, we reared the copepod Tachidius discipes in two thermal environments for 7 months creating a cold (10 °C) and a warm line (20 °C) established over ∼8 and ∼13 generations respectively. Copepods were then reciprocally transplanted during one generation to assess the capacity for adaptation to warming in life history traits and identify trade-offs and costs associated with it. Males and females of both lines grew smaller at higher temperatures with no signs for adaptation. In contrast, adaptation to high temperatures in clutch size buffered the clutch size reduction by 20 % while plasticity was retained. T. discipes also showed adaptation to high temperature in sex ratios, with larger proportions of females in these conditions in the warm line. However, adaptation to warmer temperatures carried a loss of plasticity in metabolic rates since the warm line maintained an elevated metabolism when transplanted to a colder environment. In conclusion, adaptation to warmer temperatures in reproductive traits carried a plasticity trade-off in metabolic traits that can bring warm adapted populations at risk during colder periods, especially when co-occurring with periods of food limitation. |
IMIS is ontwikkeld en wordt gehost door het VLIZ.
