Marine Biodiversity Insights from Indonesia: Cryptic Species and Chemical Profiles in the Nudibranch Genus Chromodoris
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Abstract
During our ongoing biodiversity investigation on Weh Island, we encountered the marine Gastropod mollusks genus Chromodoris. Phylogenetic analysis revealed the presence of cryptic species of Chromodoris lochi on 82 specimens. We also collected their prey-specific sponge, Spongian sp., to evaluate their chemical contents. As a result, the chemical profile showed well-known scalarane diterpenoids on either nudibranch or the sponge by spectroscopy analysis. Further analysis with molecular networks revealed that the chemical profile of the genus Chromodoris had inadvertently been mixed with other clades to introduce chemical variations. Detailed analysis by descriptive statistical approach indicated that the biochemical parameters have a higher concentration in the northern than in the southern area of Weh Island.
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