Browsing by Author "dos Santos, Antonina"
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- Complete larval development of the hermit crabs Clibanarius aequabilis and Clibanarius erythropus (Decapoda : Anomura : Diogenidae), under laboratory conditions, with a revision of the larval features of genus ClibanariusPublication . Bartilotti, Catia; Calado, Ricardo; dos Santos, AntoninaThe complete larval development (four zoeae and one megalopa) of Clibanarius aequabilis and C. erythropus, reared under laboratory conditions, is described and illustrated. The larval stages of the two northeastern Atlantic Clibanarius species cannot be easily differentiated. Their morphological characters are compared with those of other known Clibanarius larvae. The genus Clibanarius is very homogeneous with respect to larval characters. All Clibanarius zoeae display a broad and blunt rostrum, smooth abdominal segments and an antennal scale without a terminal spine. Beyond the second zoeal stage, the fourth telson process is present as a fused spine, and the uropods are biramous. In the fourth larval stage all species display a mandibular palp. The Clibanarius megalopa presents weakly developed or no ocular scales, symmetrical chelipeds, apically curved corneous dactylus in the second and third pereiopods, and 5-11 setae on the posterior margin of the telson. Apart from the number of zoeal stages, Clibanarius species may be separated, beyond the second zoeal stage, by the telson formula and the morphology of the fourth telson process.
- Decapod larvae distribution and species composition off the southern Portuguese coastPublication . Pochelon, Patricia N.; Pires, Rita F. T.; Dubert, Jesus; Nolasco, Rita; Santos, A. Miguel P.; Queiroga, Henrique; dos Santos, AntoninaFor decapod crustaceans, the larval phase is the main responsible for dispersal, given the direct emission from adult habitats into the water column. Circulation patterns and behavioural mechanisms control the dispersal distance and connectivity between different areas. Information on larval distribution and abundance is required to predict the size and location of breeding populations, and correctly manage marine resources. Spatial distribution and abundance data of decapod larvae, and environmental parameters were assessed in winter surveys off the southern Portuguese coast. To better understand the oceanic structures driving larval distribution patterns, in situ physical parameters were measured and a hydrodynamical model used. Inter-annual, cross-shore and alongshore differences on decapod larvae distribution were found. Brachyuran crabs dominated the samples and similar taxa composition was observed in the most dynamic areas. Coastal taxa dominated the nearshore survey and were almost absent in the more offshore one, that registered much lower abundances. An upwelling front allowed a clear cross-shore species separation, also evident in the abundance values and number of taxa. Hydrodynamical conditions and adult habitats were the main factors explaining the observed patterns. Important missing information to understand the distribution patterns of decapod larval communities and the mechanisms behind them is given for the region.
- Lipkea ruspoliana Vogt, 1886 (Cnidaria: Staurozoa) in Portugal: the contribution of citizen science to range extension and taxonomic discussion of rare speciesPublication . Miranda, Lucília S.; Tavares, Sílvia; dos Santos, Antonina; Gonçalves, Emanuel J.; Serrao, Ester; Coelho, MárcioCitizen science online platforms are increasingly making important sources of biological information available at the click of a button, allowing the interaction of volunteers and scientists to report and identify the world's diversity. In this work, we combined the data available in citizen science platforms (iNaturalist and GelAvista) and the effort and collaboration of a diverse team of scuba-divers, scientists, and underwater photographers to report for the first time the presence of the stauromedusa Lipkea (Cnidaria: Staurozoa) in Portugal. Based on DNA (COI and 16S), we identified the species as Lipkearuspoliana. However, the marginal lappets of some Portuguese specimens are similar to those of Lipkeasturdzii, a species described based on a single specimen in 1893 and never reported again. These results suggest that L.sturdzii is a synonym of L.ruspoliana, although further taxon and habitat sampling for genetic studies and investigations of intraspecific morphological variation are necessary. In addition, we provided data on species ecology, reviewed the records of Staurozoa from Portugal, and mapped the world geographic distribution of Lipkea. Staurozoa is a cryptic group of cnidarians, and Lipkea seems to be a particularly rare genus. Citizen science has proved to be a valuable contribution to studies on the group, enabling biological discussions that otherwise would be more challenging.
- The ocean sampling day consortiumPublication . Kopf, Anna; Bicak, Mesude; Kottmann, Renzo; Schnetzer, Julia; Kostadinov, Ivaylo; Lehmann, Katja; Fernandez-Guerra, Antonio; Jeanthon, Christian; Rahav, Eyal; Ullrich, Matthias; Wichels, Antje; Jones, Scott; Orlic, Sandi; Steinke, Michael; Busch, Julia; Duarte, Bernardo; Caçador, Isabel; ten Hoopen, Petra; Canning-Clode, João; Aguirre-Macedo, Ma L.; Bobrova, Oleksandra; Vezzi, Alessandro; Marteinsson, Viggo; Collin, Rachel; Reynisson, Eyjolfur; Loureiro, Clara M.; Luna, Gian M.; Quero, Grazia M.; Löscher, Carolin R.; Kremp, Anke; Amaral, Valentina; DeLorenzo, Marie E.; Yoshida, Takashi; Øvreås, Lise; Wang, Shiao; Fuhrman, Jed A.; Tolman, Jennifer; LaRoche, Julie; Penna, Antonella; Frischer, Marc; Davis, Timothy; Katherine, Barker; Meyer, Christopher P.; Ogata, Hiroyuki; Conan, Pascal; Todorova, Nadezhda; Alonso, Cecilia; Stambler, Noga; Goodwin, Kelly; Nyhus, Paul A. F.; Yakimov, Michael M.; Santana, Rafael; Baltar, Federico; Bodrossy, Levente; Ingleton, Tim; Van De Kamp, Jodie; Frampton, Dion M.; Ostrowski, Martin; Van Ruth, Paul; Karamfilov, Ventzislav; Malthouse, Paul; Bizsel, Kemal C.; Claus, Simon; Deneudt, Klaas; Pedrotti, Maria L.; Munnik, Kate; Mortelmans, Jonas; Pitois, Sophie; Wallom, David; Salter, Ian; Costa, Rodrigo; Schroeder, Declan C.; Kandil, Mahrous M.; Rodriguez-Ezpeleta, Naiara; Kotoulas, Georgios; Berteaux-Lecellier, Veronique; Cochrane, Guy; Wecker, Patricia; Cariou, Thierry; Cancio, I.; Lauro, Federico M.; Vaulot, Daniel; Bienhold, Christina; Ghazal, Hassan; Chaouni, Bouchra; Essayeh, Soumya; Ettamimi, Sara; Iriberri, Juan; Zaid, El H.; Golyshin, Peter N.; Boukhatem, Noureddine; L’Haridon, Stephane; Martin, Patrick; Bouali, Abderrahim; Chahboune, Rajaa; Barrijal, Said; Timinouni, Mohammed; El Otmani, Fatima; Bennani, Mohamed; Mea, Marianna; Gasol, Josep M.; Jensen, Rachelle M.; Gerdts, Gunnar; Hinks, Jamie; Gebbels, Susan; Rosselli, Riccardo; Jude-Lemeilleur, Florence; De Pascale, Fabio; Bente, Edvardsen; Schiavon, Riccardo; dos Santos, Antonina; Moncheva, Snejana; Villar, Emilie; Pesant, Stéphane; Cataletto, Bruno; Malfatti, Francesca; Polymenakou, Paraskevi; Edirisinghe, Ranjith; Sonnenschein, Eva C.; Silveira, Jorge A. H.; Barbier, Michele; Karlsen, Hans E.; Dzhembekova, Nina; Turk, Valentina; Tinta, Tinkara; Fuller, Wayne J.; Salihoglu, Ilkay; Serakinci, Nedime; Ergoren, Mahmut C.; Bresnan, Eileen; Johnson, Zackary; Ramos, Sandra; Sinigalliano, Christopher D.; Siam, Rania; Gidley, Maribeth L.; Biancalana, Florencia; Zingone, Adriana; O’Gara, Fergal; Danovaro, Roberto; Tsiamis, George; Clark, M. S.; Costa, Ana C.; El Bour, Monia; Martins, Ana M.; Magalhães, Catarina; Collins, R. E.; Poulton, Nicole; Ducluzeau, Anne-Lise; Abdallah, Rehab Z.; Jackson, Stephen; Martinez, Jonathan; Costello, Mark J.; Amaral-Zettler, Linda A.; Gilbert, Jack A.; Davies, Neil; Field, Dawn; Glöckner, Frank O.Ocean Sampling Day was initiated by the EU-funded Micro B3 (Marine Microbial Biodiversity, Bioinformatics, Biotechnology) project to obtain a snapshot of the marine microbial biodiversity and function of the world’s oceans. It is a simultaneous global mega-sequencing campaign aiming to generate the largest standardized microbial data set in a single day. This will be achievable only through the coordinated efforts of an Ocean Sampling Day Consortium, supportive partnerships and networks between sites. This commentary outlines the establishment, function and aims of the Consortium and describes our vision for a sustainable study of marine microbial communities and their embedded functional traits.