A global phylogeny of Elysia Risso, 1818 (Gastropoda: Heterobranchia): molecular systematic insights focusing on European taxa and description of a new species
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A global phylogeny of Elysia Risso, 1818 (Gastropoda: Heterobranchia) : molecular systematic insights focusing on European taxa and description of a new species. / Martín-Hervás, M. Rosario; Carmona, Leila; Jensen, Kathe R.; Krug, Patrick J.; Vitale, Fabio; Cervera, Juan Lucas.
In: Zoological Journal of the Linnean Society , Vol. 200, No. 3, 2024, p. 670-689.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - A global phylogeny of Elysia Risso, 1818 (Gastropoda: Heterobranchia)
T2 - molecular systematic insights focusing on European taxa and description of a new species
AU - Martín-Hervás, M. Rosario
AU - Carmona, Leila
AU - Jensen, Kathe R.
AU - Krug, Patrick J.
AU - Vitale, Fabio
AU - Cervera, Juan Lucas
PY - 2024
Y1 - 2024
N2 - The genus Elysia comprises about one-third of the species richness in Sacoglossa. However, the species diversity in the genus remains poorly characterized in some areas like the north-eastern Atlantic and Mediterranean waters. To clarify the systematics of this genus and to characterize the species diversity in undersampled regions, we performed an integrative study based on a thorough literature review, molecular and morphological analyses, and species delimitation approaches. We conducted phylogenetic analyses of partial sequences of two mitochondrial genes (COI and 16S) and two nuclear genes (H3, 28S) using Bayesian inference and maximum likelihood methods, which confirmed the presence of five of the recognized European Elysia species: Elysia viridis, E. timida, E. flava, E. margaritae, and E. rubeni. Moreover, a new species (Elysia azorica sp. nov.) was identified in the Azores, and E. gordanae, currently considered a junior synonym of E. margaritae, was recovered as a distinct species. In addition, we consider E. hetta as a junior synonym of E. gordanae, and E. translucens as a taxon inquirendum. Finally, the tropical E. evelinae is recorded along European coasts for the first time. Our results demonstrate the value of integrative approaches in resolving taxonomic uncertainty surrounding polymorphism and unravelling potential cases of cryptic or pseudocryptic species complexes.
AB - The genus Elysia comprises about one-third of the species richness in Sacoglossa. However, the species diversity in the genus remains poorly characterized in some areas like the north-eastern Atlantic and Mediterranean waters. To clarify the systematics of this genus and to characterize the species diversity in undersampled regions, we performed an integrative study based on a thorough literature review, molecular and morphological analyses, and species delimitation approaches. We conducted phylogenetic analyses of partial sequences of two mitochondrial genes (COI and 16S) and two nuclear genes (H3, 28S) using Bayesian inference and maximum likelihood methods, which confirmed the presence of five of the recognized European Elysia species: Elysia viridis, E. timida, E. flava, E. margaritae, and E. rubeni. Moreover, a new species (Elysia azorica sp. nov.) was identified in the Azores, and E. gordanae, currently considered a junior synonym of E. margaritae, was recovered as a distinct species. In addition, we consider E. hetta as a junior synonym of E. gordanae, and E. translucens as a taxon inquirendum. Finally, the tropical E. evelinae is recorded along European coasts for the first time. Our results demonstrate the value of integrative approaches in resolving taxonomic uncertainty surrounding polymorphism and unravelling potential cases of cryptic or pseudocryptic species complexes.
U2 - 10.1093/zoolinnean/zlad086
DO - 10.1093/zoolinnean/zlad086
M3 - Journal article
VL - 200
SP - 670
EP - 689
JO - Zoological Journal of the Linnean Society
JF - Zoological Journal of the Linnean Society
SN - 0024-4082
IS - 3
ER -
ID: 384068391