48 research outputs found
AproximaciĂłn al estudio de la morfologĂa setĂgera en algunas especies ibĂ©ricas de los gĂ©neros <i>Glycera</i> Savigny, 1818 y <i>Glycerella</i> Arwidsson, 1899 (Polychaeta, Glyceridae)
Size-associated Variation and Factors Affecting the Morphology of Brown Bodies in Glycera tridactyla (Polychaeta:Glyceridae)
Size-associated variations in brown body morphology (size and shape) were studied from the individuals of Glycera tridactyla. Variables related to size, length (BL) and width (BW) of the brown bodies were measured. On the basis of these measurements, other variables such as the surface area (SA), volume (V), surface area/volume ratio (SA/V) and elongation degree (ED) were calculated. Brown body shape was quantified by the elongation degree. The immature brown bodies were significantly smaller than the mature bodies, and therefore the smaller bodies had a higher SA/V. Results obtained from the regression analysis showed that there was a significant relationship between all the variables with the exception of SA/V:BW for the immature bodies and ED: BL for both groups of the bodies. The body size (proboscis length) of the worm and the sampling time (months) were the affecting factors on size and shape of the brown body. Brown bodies tend to be elongated as the proboscis length increased. The variation in size and/or shape of the brown bodies could refer to an adaptation to the movement along the coelomic fluid
Sphaerodoridae (Annelida: Polychaeta) from the Bellingshausen Sea (Antarctica) with the description of two new species
The examination of polychaete collections obtained during the Spanish Bentart 2006expedition to the Bellingshausen Sea (Antarctica) revealed the presence of several sphaerodorid species. In this work, species belonging to the genera Sphaerodorum Ărsted, 1843, Ephesiella Chamberlin, 1919, Clavodorum Hartman and Fauchald, 1971 and Sphaerephesia Fauchald, 1972 are reported including two new species belonging to Sphaerodorum and Sphaerephesia, respectively. A specimen identified as Ephesiella sp. might also represent a new species but, due to its poor state of preservation, a formal description is not possible yet. Furthermore, Sphaerodoropsis polypapillata Hartmann-Schröder and Rosenfeldt, 1988 is transferred to the genus Clavodorum Hartman and Fauchald, 1971 after examination of the type series and specimens obtained from the Bellingshausen Sea.ComisiĂłn Interministerial de Ciencia y TecnologĂa; REN 2001-1074/ANTComisiĂłn Interministerial de Ciencia y TecnologĂa; CGL2004-0185
On the Diversity of Phyllodocida (Annelida: Errantia), with a Focus on Glyceridae, Goniadidae, Nephtyidae, Polynoidae, Sphaerodoridae, Syllidae, and the Holoplanktonic Families
Este artĂculo contiene 65 pĂĄginas, 26 figuras, 1 tabla.Phyllodocida is a clade of errantiate annelids characterized by having ventral sensory palps, anterior enlarged cirri, axial muscular proboscis, compound chaetae (if present) with a single ligament, and of lacking dorsolateral folds. Members of most families date back to the Carboniferous, although the earliest fossil was dated from the Devonian. Phyllodocida holds 27 well-established and morphologically homogenous clades ranked as families, gathering more than 4600 currently accepted nominal species. Among them, Syllidae and Polynoidae are the most specious polychaete groups. Species of Phyllodocida are mainly found in the marine benthos, although a few inhabit freshwater, terrestrial and planktonic environments, and occur from intertidal to deep waters in all oceans. In this review, we (1) explore the current knowledge on species diversity trends (based on traditional species concept and molecular data), phylogeny, ecology, and geographic distribution for the whole group, (2) try to identify the main knowledge gaps, and (3) focus on selected families: Alciopidae, Goniadidae, Glyceridae, Iospilidae, Lopadorrhynchidae, Polynoidae, Pontodoridae, Nephtyidae, Sphaerodoridae, Syllidae, Tomopteridae, Typhloscolecidae, and Yndolaciidae. The highest species richness is concentrated in European, North American, and Australian continental shelves (reflecting a strong sampling bias). While most data come from shallow coastal and surface environments most world oceans are clearly under-studied. The overall trends indicate that new descriptions are constantly added through time and that less than 10% of the known species have molecular barcode information availableWe acknowledge support of the publication fees by the CSIC Open Access Publication
Support Initiative through its Unit of Information Resources for Research (URICI) and the Open
Access Publication Funds of the Georg-August-UniversitÀt Göttingen. This research was funded
by the Spanish âAgencia Estatal de InvestigaciĂłnâ (AEI) and the European Funds for Regional
Development (FEDER), Research Project PopCOmics (CTM2017-88080) to DM; the Russian Scientific
Foundation for Basic Research, grant no. RFBR 18-05-00459 to TAB; Fundação para a CiĂȘncia e
a Tecnologia (FCT), contract foreseen in the Decree-Law 57/2016 (Nrs 4-6, art. 23), changed by
Law 57/2017 to AR and FCT/MCTES to CESAM (UIDP/50017/2020+UIDB/50017/2020) through
national funds; SĂŁo Paulo Research Foundation (FAPESP), fellowship proc. 2007/53040-9 to MVF;
Spanish MINECO, AEI, Comunidad AutĂłnoma de las Islas Baleares, European Social Funds and
RamĂłn y Cajal program, RYC-2016-20799 to MC; FCT and ESF (SFRH/BD/131527/2017) through a
PhD grant to MALT.Peer reviewe
A Polychaeteâs Powerful Punch: Venom Gland Transcriptomics of Glycera Reveals a Complex Cocktail of Toxin Homologs
© The Author(s) 2014. Published by Oxford University Press on behalf of the Society for Molecular Biology and Evolution.
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited. The article attached is the publisher's pdf
Glyceriformia Fauchald, 1977 (Annelida: " Polychaeta ") from Lizard Island, Great Barrier Reef, Australia
Böggemann, Markus (2015): Glyceriformia Fauchald, 1977 (Annelida: " Polychaeta ") from Lizard Island, Great Barrier Reef, Australia. Zootaxa 4019 (1), DOI: http://dx.doi.org/10.11646/zootaxa.4019.1.