Results 51 to 60 of about 27,244 (236)

Opheliidae (Polychaeta) collected by the R/V Hero and the USNS Eltanin cruises from the Southern Ocean and South America

Scientia Marina, 2006
Opheliid polychaetes collected by the United States Antarctic Research Program and additional material from South America were made available for study through the Smithsonian Institution, Washington, D.C., USA.
Nancy J. Maciolek, James A. Blake
doaj   +1 more source

ParaHox Genes Revisited: From Gut Patterning to Integrated Axial and Neural Organization in Rotifera

Journal of Experimental Zoology Part B: Molecular and Developmental Evolution, EarlyView.
In rotifers, ParaHox genes show a dispersed genomic organization, with Xlox absent across gnathiferans. Exclusive neuronal expression of Gsx and Cdx reveals that ancestral ParaHox genes coordinated neural and epithelial development beyond gut patterning, suggesting an integrated role in early bilaterian body plan organization.
Andreas C. Fröbius, David B. Mark Welch, Holger Herlyn   +2 more
wiley   +1 more source

Description of three new species of Ninoe and Cenogenus (Polychaeta: Lumbrineridae) from the Mexican Pacific

Scientia Marina, 2006
In this study, 169 lumbrinerids of the genera Ninoe and Cenogenus from the sublittoral zone of the Gulf of California and Gulf of Tehuantepec were analysed.
Pablo Hernández-Alcántara, Alma Yazmín Pérez-Mendoza, Vivianne Solís-Weiss   +2 more
doaj   +1 more source

Expression of Distal-less, dachshund, and optomotor blind in Neanthes arenaceodentata (Annelida, Nereididae) does not support homology of appendage-forming mechanisms across the Bilateria [PDF]

, 2010
The similarity in the genetic regulation of arthropod and vertebrate appendage formation has been interpreted as the product of a plesiomorphic gene network that was primitively involved in bilaterian appendage development and co-opted to build ...
A Abzhanov, A Caracciolo, A Hejnol, A Hidalgo, A Horner, A Minelli, A Minelli, A Saudemont, A Schmidt-Rhaesa, A Wallberg, AD Chipman, AS Denes, B Hausdorf, B Mittmann, B Prud’homme, B Rhode, C Nielsen, Christopher J. Winchell, CJ Tabin, CJ Winchell, CL Hughes, CM Heuer, CM Heuer, CW Dunn, D Arendt, DA Dorsett, DA Dorsett, David K. Jacobs, DK Jacobs, DK Jacobs, DR Angelini, DR Angelini, DR Maddison, DW Golding, DW Stock, E Abouheif, EC Seaver, EC Seaver, F Ronquist, G Aspöck, G Balavoine, G Campbell, G Giribet, G Mardon, G Panganiban, G Panganiban, G Panganiban, G Scholtz, G Scholtz, G Scholtz, GA Wray, GF Striedter, GO Pflugfelder, GP Wagner, J Felsenstein, J Mallatt, J Mallatt, J Paps, J Paps, JD Thompson, JE Smith, JH Imai, JI Hamaker, JI Pueyo, JJ Gibson-Brown, Jonathan E. Valencia, K Bell, KJ Sepp, KL Hammond, KL Hammond, KS Pappu, L Maves, L Orrhage, L Orrhage, M Kulakova, M Qiu, M Schoppmeier, MJ Bastiani, MJ Telford, N Dray, N Gorfinkiel, N Shubin, N Shubin, N-M Prpic, N-M Prpic, N-M Prpic, N-M Prpic, NJ Strausfeld, NT Takaesu, P Dollé, R Abascal, R Desper, R Janssen, R Janssen, R Kirsch, R Tomer, RF Robledo, RJ Davis, S Candiani, S Guindon, S Nissim, SB Carroll, SF Altschul, SM Cohen, SM Cohen, SM Farris, SQ Irvine, SQ Irvine, SR Martini, T Bartolomaeus, T Kojima, TA Heanue, TA Williams, TH Bullock, W Arthur, W Sewell, W Westheide, WJ Brook, WJ Dickinson, X Yang, Y Boilly-Marer, Y Inoue, Y Inoue, Y Kida, Z Kozmik, Z Kozmik   +125 more
core   +4 more sources

Sponge-Associated Polychaetes: Not a Random Assemblage

Frontiers in Marine Science, 2021
Polychaetes are among the most common marine organisms, and in many habitats they dominate both in species richness and abundance. They are often found in association with other organisms.
Liron Goren, Liron Goren, Tal Idan, Tal Idan, Sigal Shefer, Sigal Shefer, Micha Ilan   +6 more
doaj   +1 more source

Imaging Oxygen Distribution in Marine Sediments. The Importance of Bioturbation and Sediment Heterogeneity [PDF]

, 2008
The influence of sediment oxygen heterogeneity, due to bioturbation, on diffusive oxygen flux was investigated. Laboratory experiments were carried out with 3 macrobenthic species presenting different bioturbation behaviour patterns:the polychaetes ...
AK Hannides, AL Freestone, B Thamdrup, BB Jorgensen, BJ Cardinale, DC Rhoads, E Kristensen, E Kristensen, E Kristensen, E Kristensen, E Kristensen, E Michaud, E Michaud, EJ Gustafson, ER Trueman, F François, F François, F Gilbert, F Mermillod-Blondin, F Talin, F. Gilbert, H Kautsky, H Li, H Rasmussen, J Tardy, J. C. Poggiale, JC Poggiale, JT Davey, L. Pischedda, M Gérino, M Gérino, ML Cadenasso, NP Revsbech, NP Revsbech, P Berg, P Duttilleul, P. Cuny, PVR Snelgrove, QZ Zhu, RA Berner, RC Aller, RC Aller, RC Aller, RL Foster-Smith, RN Glud, RV O’Neill, S Garrigues, S Hulth, SC Dufour, TH Pearson   +49 more
core   +4 more sources

Sampling effort to characterize estuarine macroinfaunal communities in patchy habitats

Limnology and Oceanography: Methods, EarlyView.
Abstract Estuarine benthic macroinfauna have aggregated, patchy distributions, making accurate community measurements dependent upon sampling scales. The purpose of this study is to determine the appropriate core sizes and sampling effort needed to characterize benthic infaunal communities in Corpus Christi Bay, Texas, USA.
Paul A. Montagna
wiley   +1 more source

Hidden in plain sight, Chaetopterus dewysee sp. nov. (Chaetopteridae, Annelida) – A new species from Southern California

European Journal of Taxonomy, 2020
We describe a long-unnamed Chaetopterus Cuvier, 1830 species from southern California, using a combination of DNA barcoding and detailed morphological investigation employing high-resolution X-ray microtomography (micro-CT). Chaetopterus dewysee sp. nov.
Ekin Tilic, Greg W. Rouse
doaj   +1 more source

Differential expression of conserved germ line markers and delayed segregation of male and female primordial germ cells in a hermaphrodite, the leech helobdella. [PDF]

, 2013
In sexually reproducing animals, primordial germ cells (PGCs) are often set aside early in embryogenesis, a strategy that minimizes the risk of genomic damage associated with replication and mitosis during the cell cycle.
Cho, Sung-Jin, Vallès, Yvonne, WEISBLAT, David A.   +2 more
core   +2 more sources

Benthic megafauna and the functioning of macroalgal forests and urchin barrens

Oikos, EarlyView.
Two temperate rocky reef food‐web models, representing the trophic diversity of the Mediterranean rocky reef communities, were built for the two stable states: macroalgal forests and barren grounds, which are characterized by opposite amounts of erect macroalgal biomass.
Chiara Bonaviri, Davide Agnetta, Stefania Pinna, Luigi Piazzi, Fabio Badalamenti, Giulia Ceccherelli, Davide Iaciofano, Manfredi Di Lorenzo, Francesco Di Trapani, Sabrina Lo Brutto, Vesna Mačić, Anna Maria Mannino, Francesco Mura, Luigi Musco, Laura Tamburello, Tomás Vega Fernández, Salvatrice Vizzini, Trevor Willis, Paola Gianguzza   +18 more
wiley   +1 more source