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Egg drift from the nest is clearly an important cause of mortality in lithophilic species; however, the effect of substrate composition on this process has been overlooked. Here, we investigated… Click to show full abstract
Egg drift from the nest is clearly an important cause of mortality in lithophilic species; however, the effect of substrate composition on this process has been overlooked. Here, we investigated the role of substrate on the spawning preference and egg retention of river lamprey (Lampetra fluviatilis) during a whole breeding season in a two-option experimental setting. Despite no initial preference, the lamprey eventually favoured the most efficient substrate for egg retention. The pebbly substrate hosted 12 times as many matings as the sandy one, while blurting 20% fewer eggs. This article is protected by copyright. All rights reserved.
Journal Title: Journal of fish biology
Year Published: 2022
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