Feeding preference of the sea hares Aplysia brasiliana and A. juliana from Brazilian littoral: Different trophic specializations
DOI:
https://doi.org/10.1590/Resumo
Feeding preferences of benthic marine herbivores provides insight into their ecology, as well as their trophic relationships and potential impact on seaweeds. We present evidence of feeding preferences in Aplysia brasiliana and A. juliana sea hares, collected from two distinct locations along the Brazilian coast, based on laboratory experiments. Aplysia brasiliana from Forno Beach primarily consumed Laurencia dendroidea, a red seaweed known for its chemical defenses against herbivory, whereas A. juliana from Boa Viagem predominantly fed on Ulva fasciata, a palatable green seaweed. These results suggest that A. brasiliana has evolved dietary counteradaptations to chemically defended seaweeds, while A. juliana displays a more generalized preference for palatable seaweeds commonly consumed by several marine herbivores.
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