English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

BackgroundTo date, the genus    Amphiduros    (  Annelida  :   Hesionidae  : Amphidurine) is considered as monotypic. Its single species,    Amphiduros   fuscescens    (Marenzeller, 1875), is well characterised by lacking proboscideal papillae and emerging acicular chaetae, as well as by having three antennae, eight pairs of tentacular cirri and inflated dorsal cirri with characteristic alternating length and colour (transparent, with median orange band and white tips) in live animals.New informationThree specimens, one male and two females, were found below boulders at 5–7 m depth in Punta Santa Anna, Blanes and Cala Maset, Sant Feliu de Guixols (Catalan Sea, NW Mediterranean, Iberian Peninsula). Our finding allowed us to describe different, unreported morphological traits and lead us to support the existence of sexual dimorphism (in terms of colouring, cirri morphology and distribution of sexual products along the body). Despite    A.   fuscescens    having been previously reported from the Atlantic and the Mediterranean (particularly in SE French coasts), the specimens from Blanes represent the first record of the species from the Iberian Peninsula. In addition, our molecular results strongly support that    Amphiduros   pacificus    Hartman, 1961 from California (currently synonymised with    A.   fuscescens  )  requires to be re-described and reinstalled as a valid species. In turn, our morphological observations support suggesting all other non-Mediterranean reports of    A.   fuscescens   , including the species still under synonymy (i.e.    Amphidrornus   izukai    Hessle, 1925 and    Amphidromus   setosus    Hessle, 1925) as likely being a cryptic species complex whose the taxonomic status requires further assessment.

biodiversity data journal

Morphology and sexual dimorphism of living mature adults of    Amphiduros   fuscescens    (Marenzeller, 1875) (  Annelida  ,   Hesionidae  , Amphidurine), first reported for the Iberian Peninsula