Algal blooms decrease care but increase egg survival in a fish with paternal care

摘要: Human-induced eutrophication, resulting in algal blooms and increased water turbidity, is an alarming problem aquatic systems. Here, we experimentally tested the impact of turbidity on parental care, egg fanning, time nest, sand goby, Pomatoschistus minutus, a fish with uniparental male care. We allowed males to care for their eggs either clear or made turbid by planktonic algae. In early brood cycle, fanned less than water, but this difference disappeared later. Despite decreased survival was higher conditions, indicating that fanning may partly be redundant perhaps used more as courtship. Males also spent out nest means encounter additional females under conditions low visibility.