Uusi-Heikkilä Silva, Salonen Jouni K, Karjalainen Juha S, Väisänen Ari, Hippeläinen Johanna, Hämärvuo Teemu, Kuparinen Anna
Department of Biological and Environmental Science University of Jyväskylä Jyvaskyla Finland.
Department of Chemistry University of Jyväskylä Jyvaskyla Finland.
Ecol Evol. 2024 Aug 8;14(8):e70134. doi: 10.1002/ece3.70134. eCollection 2024 Aug.
Animals with different life-history types vary in their stress-coping styles, which can affect their fitness and survival in changing environments. We studied how chronic exposure to manganese sulfate (MnSO), a common aquatic pollutant, affects life-history traits, physiology, and behavior of zebrafish () with two life-history types: fast (previously selected for fast juvenile growth, early maturation, and small adult body size) and slow life histories (selected for slow juvenile growth, late maturation, and large adult body size). We found that MnSO had negative effects on growth and condition factors, but the magnitude of these effects depended on the life-history type. Individuals with fast life histories were more susceptible to MnSO than fish with slow life histories as they had lower growth rate, condition factor and feeding probability in high MnSO concentrations. Our results demonstrate that MnSO can impair fish performance, and life-history variation can modulate the stress-coping ability of individuals.
具有不同生活史类型的动物在应对压力的方式上存在差异，这会影响它们在不断变化的环境中的适应性和生存能力。我们研究了长期暴露于常见的水生污染物硫酸锰（MnSO₄）如何影响两种生活史类型斑马鱼（Danio rerio）的生活史特征、生理和行为：快速生活史类型（先前为快速幼鱼生长、早熟和成年个体小体型而选择）和慢速生活史类型（为幼鱼生长缓慢、晚熟和成年个体大体型而选择）。我们发现硫酸锰对生长和状况因子有负面影响，但这些影响的程度取决于生活史类型。快速生活史的个体比慢速生活史的鱼对硫酸锰更敏感，因为在高硫酸锰浓度下它们的生长速率、状况因子和摄食概率更低。我们的结果表明，硫酸锰会损害鱼类的表现，生活史变异可以调节个体的应激应对能力。
