Intersection of historical museum collections and modern systematics: a relict population of the Arctic nudibranch Dendronotus velifer G.O. Sars, 1878 in a Swedish fjordстатья
Статья опубликована в высокорейтинговом журнале
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Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 10 августа 2018 г.
Аннотация:Based on morphological, bathymetric and molecular data
comparing recently collected Arctic and North Atlantic
specimens with morphological and bathymetrical data on
historical museum specimens, a unique relict population of
the deep-water mollusc Dendronotus velifer G.O. Sars, 1878
(Gastropoda: Nudibranchia) is shown to have existed in the
deepest section of the Swedish Gullmar Fjord (the only true
silled fjord in Sweden) at least until the middle of the 20th
century. This population is more than 1500 km away from the
nearest point in the species’ distributional range in the Arctic
Ocean today. Using an integrative approach incorporating
the data mentioned above, including genetic distances, from
recently collected specimens taken from the Arctic Ocean, D.
velifer is validated and its species status is restored, for the first
time in more than a century after being regarded as a junior
synonym of D. robustus. The bathymetric data for historical
and recently collected specimens of D. velifer demonstrate
significant differences compared to the shallow-water species
D. robustus. The findings support the necessity of a stronger
protection for the unique marine habitats of the Gullmar Fjord.