| Title | Description of six new species of Mesonerilla (Nerillidae, Annelida) and an emended description of M. intermedia Wilke, 1953, from marine and cave environments |
| Abstract | Nerillidae is a species-rich family of meiofaunal, mainly interstitial annelids. The genus Mesonerilla previously contained eight described species. We here describe six new species of Mesonerilla based on detailed morphological light and scanning electron microscopy studies. The new species were collected from coastal subtidal and tidal sediments, as well as from anchialine caves, in the Mediterranean, Canary Islands, Panama, Trinidad and Tobago and the USA. All species of Mesonerilla contain nine segments, two-three antennae, two club-shaped palps, parapodial cirri and compound chaetae in most segments. New species are diagnosed by unique character traits and/or a unique combination of characters involving differences in shape of appendages, reproductive characters and glandular and ciliary patterns. Their validation is further supported by a molecular phylogeny including these and the majority of described species of Mesonerilla. With most of the diagnostic characters of the described species being hardly discernible, and with potential additional molecular identifiable species left undescribed, the genus Mesonerilla, as many other interstitial groups, show a high degree of cryptic diversity. |
| Source | Marine biodiversity (Print) 49 (5), pp. 2141–2165 |
| Keywords | InterstitialMeiofaunaAnchialine faunaMicroscopyMolecular phylogeny |
| Journal | Marine biodiversity (Print) |
| Editor | Springer, Heidelberg ;, Germania |
| Year | 2019 |
| Type | Articolo in rivista |
| DOI | 10.1007/s12526-019-00984-6 |
| Authors | Worsaae, Katrine; Mikkelsen, Maria Damsgaard; Martinez, Alejandro |
| Text | 417465 2019 10.1007/s12526 019 00984 6 ISI Web of Science WOS 000492657400001 Interstitial Meiofauna Anchialine fauna Microscopy Molecular phylogeny Description of six new species of Mesonerilla Nerillidae, Annelida and an emended description of M. intermedia Wilke, 1953, from marine and cave environments Worsaae, Katrine; Mikkelsen, Maria Damsgaard; Martinez, Alejandro Univ Copenhagen; Natl Res Council Italy Nerillidae is a species rich family of meiofaunal, mainly interstitial annelids. The genus Mesonerilla previously contained eight described species. We here describe six new species of Mesonerilla based on detailed morphological light and scanning electron microscopy studies. The new species were collected from coastal subtidal and tidal sediments, as well as from anchialine caves, in the Mediterranean, Canary Islands, Panama, Trinidad and Tobago and the USA. All species of Mesonerilla contain nine segments, two three antennae, two club shaped palps, parapodial cirri and compound chaetae in most segments. New species are diagnosed by unique character traits and/or a unique combination of characters involving differences in shape of appendages, reproductive characters and glandular and ciliary patterns. Their validation is further supported by a molecular phylogeny including these and the majority of described species of Mesonerilla. With most of the diagnostic characters of the described species being hardly discernible, and with potential additional molecular identifiable species left undescribed, the genus Mesonerilla, as many other interstitial groups, show a high degree of cryptic diversity. 49 Published version Articolo in rivista Springer 1867 1616 Marine biodiversity Print Marine biodiversity Print Mar. biodivers. Print Marine biodiversity. Print alejandro.martinezgarcia MARTINEZ GARCIA ALEJANDRO |
