Contrasting offspring responses to variation in salinity and temperature among populations of a coastal crab: A maladaptive ecological surprise?
| Autor: | Gabriela Torres, Zoran Šargač, Jakob Krieger, Luis Giménez, Kasper Fjordside, Steffen Harzsch |
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| Rok vydání: | 2021 |
| Předmět: |
Post-zygotic effects
0106 biological sciences Interpopulation variation Ecology biology Offspring 010604 marine biology & hydrobiology media_common.quotation_subject Aquatic Science biology.organism_classification 010603 evolutionary biology 01 natural sciences Salinity Surprise Variation (linguistics) Environmental drivers 14. Life underwater Carcinus maenas Larval performance Ecology Evolution Behavior and Systematics media_common |
| Zdroj: | Šargač, Z, Giménez, L, Harzsch, S, Krieger, J, Fjordside, K & Torres, G 2021, ' Contrasting offspring responses to variation in salinity and temperature among populations of a coastal crab : A maladaptive ecological surprise? ', Marine Ecology Progress Series, vol. 677, pp. 51-65 . https://doi.org/10.3354/meps13851 |
| ISSN: | 1616-1599 0171-8630 |
| Popis: | Current understanding of species capacities to respond to climate change is limited by the amount of information available about intraspecific variation in the responses. Therefore, we quantified between- and within- population variation in larval performance (survival, development, and growth to metamorphosis) of the shore crabCarcinus maenasin response to key environmental drivers (temperature, salinity) in 2 populations from regions with contrasting salinities (32-33 PSU: Helgoland, North Sea; 16-20 PSU: Kerteminde, Baltic Sea). We also accounted for the effect(s) of salinity experienced during embryogenesis, which differs between populations. We found contrasting patterns between populations and embryonic salinity conditions. In the Helgoland population, we observed a strong thermal mitigation of low salinity stress (TMLS) for all performance indicators, when embryos were kept in seawater. The negative effects of low salinity on survival were mitigated at increased temperatures; only at high temperatures were larvae exposed to low salinity able to sustain high growth rates and reduced developmental time, thereby metamorphosing with comparable levels of carbon and nitrogen to those reared in seawater. By contrast, larvae from the Kerteminde population showed a detrimental effect of low salinity, consistent with a maladaptive response and a weak TMLS. Low salinity experienced during embryogenesis pre-empted the development of TMLS in both populations, and reduced survival for the Kerteminde population, which is exposed to low salinity. Our study emphasises the importance of evaluating species responses to variation in temperature and salinity across populations; the existence of maladaptive responses and the importance of the maternal habitat should not be underestimated. |
| Databáze: | OpenAIRE |
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