Dataset Information

Prionospio from the coast of the Iberian Peninsula, with the description of two new species (Annelida, Spionidae).

ABSTRACT: Five species of Prionospio Malmgren, 1867, each with four pairs of branchiae, are studied from coast of the Iberian Peninsula. Two of these species, Prionospiocristaventralis sp. n. and P.parapari sp. n., are new to science, whereas P.caspersi Laubier, 1962, P.fallax Söderström, 1920, and P.ehlersi Fauvel, 1928 have been previously recorded. Prionospiocristaventralis sp. n. is characterized by having ventral crests present on chaetigers XI-XIX, dorsal crests and low crests on chaetigers X-XXXIV, triangular neuropodial postchaetal lamellae with pointed ventral edges on chaetiger II, oval neuropodial lamellae on chaetiger III, digitiform pinnules on the posterior face of the first and fourth pairs, and branchial pairs II and III are triangular. Prionospioparapari sp. n. is characterized by having rounded neuropodial postchaetal lamellae on chaetiger I, digitiform pinnules on the posterior face of the first and fourth pairs, branchial pairs II and III are cirriform, low dorsal crests on chaetigers VIII-IX, and oval neuropodial lamellae with enlarged dorsal edges on chaetiger III. A key is given to all Prionospio species with four pairs of branchiae known from the Iberian Peninsula coastline.

SUBMITTER: Elgado-Blas VH

PROVIDER: S-EPMC6308225 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature

ACCESS DATA

Publications

Prionospio from the coast of the Iberian Peninsula, with the description of two new species (Annelida, Spionidae).

Elgado-Blas Víctor Hugo VH Íaz-Díaz Óscar Ó Iéitez José M JM

ZooKeys 20181220 810

Five species of Prionospio Malmgren, 1867, each with four pairs of branchiae, are studied from coast of the Iberian Peninsula. Two of these species, Prionospiocristaventralis sp. n. and P.parapari sp. n., are new to science, whereas P.caspersi Laubier, 1962, P.fallax Söderström, 1920, and P.ehlersi Fauvel, 1928 have been previously recorded. Prionospiocristaventralis sp. n. is characterized by having ventral crests present on ...[more]

PMID: 30613171

Similar Datasets

Project description:Spiophanes bombyx (Claparède, 1870) from the Gulf of Naples, Tyrrhenian Sea, Italy, was the first described Spiophanes with fronto-lateral horns on the prostomium. It was also considered the only horned species occurring in European waters. Our sequence data of five gene fragments suggest the presence of two horned sibling Spiophanes species in northern Europe: S. cf. bombyx in the North and the Norwegian seas, and S. cf. convexus in Brittany, northern France, and Bay of Biscay, northern Spain. Spiophanes cf. bombyx worms are genetically close to a single examined specimen of S. bombyx from Venice Lagoon, Italy but their conspecificity should be verified by further study. Our sequence data show that horned Spiophanes from the North Pacific are genetically distant from horned European species, and that S. uschakowi Zachs, 1933, originally described from the Sea of Japan (East Sea) is a valid species. The data also suggest the presence of two horned sibling Spiophanes species in the North East Pacific: S. hakaiensis Radashevsky & Pankova, n. sp. distributed from Alaska south to about Point Conception, and S. norrisi Meißner & Blank, 2009, distributed from San Francisco Bay south to Baja California Sur, Mexico. Spiophanes from South America, morphologically similar to S. norrisi, are suggested to belong to a new species. Molecular data also suggest the presence of two sibling species among the worms from northern Europe identified by morphology as S. kroyeri Grube, 1860. Worms from the Barents Sea and northern part of the North Sea are tentatively referred to as S. cf. kroyeri; worms from the northern and central parts of the North Sea and from the Bay of Biscay, northern Spain, are tentatively referred to as S. cf. cirrata M. Sars in G.O. Sars, 1872. Sequence data also show that S. duplex from California is genetically different from morphologically similar worms from South America. The South American worms are referred to resurrected S. soederstroemi Hartman, 1953 which was originally described from off Rio Grande do Sul, Brazil, and then considered as a junior synonym of S. duplex. Analysis of divergence times of Spiophanes lineages suggested that the origin of the most recent common ancestor of horned Spiophanes with metameric nuchal organs was around 11.1 mya (95% HPD: 5.1-19.0 mya) and that the divergence of the North Atlantic and North Pacific lineages was around 7.9 mya (95% HPD: 4.1-13.3 mya). The North Atlantic lineage was estimated to have diverged 4.8 mya (95% HPD: 2.2-8.6 mya), resulting in the origin of S. cf. bombyx and S. cf. convexus. The North Pacific lineage was estimated to have diverged first by the isolation and speciation of S. norrisi 1.7 mya (95% HPD: 2.3-1.0 mya), and then by the isolation and speciation of S. uschakowi and S. hakaiensis n. sp. 1.3 mya (95% HPD: 2.0-0.7 mya). The estimates place the divergences soon after maximum glacial period in the North Pacific (2.4-3.0 mya).

Dataset Information

Prionospio from the coast of the Iberian Peninsula, with the description of two new species (Annelida, Spionidae).

Publications

<i>Prionospio</i> from the coast of the Iberian Peninsula, with the description of two new species (Annelida, Spionidae).

Similar Datasets

OmicsDI is part of the ELIXIR infrastructure

Tweets