19 documents found, page 1 of 2
Antarctic toothfish Dissostichus mawsoni as a bioindicator of trace and rare ea...
Queirós, José P.; Machado, João F.; Pereira, Eduarda; Bustamante, Paco; Carvalho, Lina; Soares, Eugénio; Stevens, Darren W.; Xavier, José CarlosThe Antarctic toothfish Dissostichus mawsoni is a Southern Ocean long-lived top predator which is regularly captured on an annual fishery operating in the region. By its biological and ecological characteristics, it is a potential bioindicator for the concentrations of trace and rare earth elements in the Antarctic. As these elements are mainly transferred through the diet and a deficiency or excess of these el...
Corrigendum: The significance of cephalopod beaks as a research tool: An update
Xavier, José Carlos; Golikov, Alexey V; Queirós, José P.; Perales-Raya, Catalina; Rosas-Luis, Rigoberto; Abreu, José; Bello, Giambattista[This corrects the article DOI: 10.3389/fphys.2022.1038064.].
Is bedding material a more effective thermal insulator than trap cover for smal...
Torre, Ignasi; Bustamante, Paco; Flaquer, Carles; Oliveira, Flávio G.Live trapping is a key technique for conducting ecological studies on small mammals. All-metal live traps are popular in monitoring schemes owing to their tested performance, lightweight design (aluminium) and foldability. However, capture represents a stressful situation for small mammals, particularly during cold seasons, when individuals are susceptible to cold weather starvation resulting from low temperatu...
Corrigendum: The significance of cephalopod beaks as a research tool: An update
Xavier, José C.; Golikov, Alexey V.; Queirós, José P.; Perales-Raya, Catalina; Rosas-Luis, Rigoberto; Abreu, José; Bello, Giambattista; Bustamante, PacoIn the published article, there was an error in the author list, and author Jorge Hernández-Urcera was erroneously excluded. The corrected author list appears below.
The significance of cephalopod beaks as a research tool: an update
Xavier, José C.; Golikov, Alexey V.; Queirós, José P.; Perales-Raya, Catalina; Rosas-Luis, Rigoberto; Abreu, José; Bello, Giambattista; Bustamante, PacoThe use of cephalopod beaks in ecological and population dynamics studies has allowed major advances of our knowledge on the role of cephalopods in marine ecosystems in the last 60 years. Since the 1960’s, with the pioneering research by Malcolm Clarke and colleagues, cephalopod beaks (also named jaws or mandibles) have been described to species level and their measurements have been shown to be related to ceph...
The significance of cephalopod beaks as a research tool: An update
Xavier, José C.; Golikov, Alexey V.; Queirós, José P.; Perales-Raya, Catalina; Rosas-Luis, Rigoberto; Abreu, José; Bello, Giambattista; Bustamante, PacoThe use of cephalopod beaks in ecological and population dynamics studies has allowed major advances of our knowledge on the role of cephalopods in marine ecosystems in the last 60 years. Since the 1960's, with the pioneering research by Malcolm Clarke and colleagues, cephalopod beaks (also named jaws or mandibles) have been described to species level and their measurements have been shown to be related to ceph...
Mercury biomagnification in a Southern Ocean food web
Seco, José; Aparício, Sara; Brierley, Andrew S.; Bustamante, Paco; Ceia, Filipe R.; Coelho, João P.; Philips, Richard A.; Saunders, Ryan A.Biomagnification of mercury (Hg) in the Scotia Sea food web of the Southern Ocean was examined using the stable isotope ratios of nitrogen (d15N) and carbon (d13C) as proxies for trophic level and feeding habitat, respectively. Total Hg and stable isotopes were measured in samples of particulate organic matter (POM), zooplankton, squid, myctophid fish, notothenioid fish and seabird tissues collected in two year...
Main drivers of mercury levels in Southern Ocean lantern fish Myctophidae
Seco, José; Xavier, José C.; Bustamante, Paco; Coelho, João P.; Saunders, Ryan A.; Ferreira, Nicole; Fielding, Sophie; Pardal, Miguel A.Myctophids are the most abundant fish group in the Southern Ocean pelagic ecosystem and are an important link in the Antarctic marine food web. Due to their major ecological role, evaluating the level of mercury (Hg) contamination in myctophids is important as a step towards understanding the trophic pathway of this contaminant. The concentrations of total Hg were determined in muscle, gill, heart and liver tis...
Mercury levels in Southern Ocean squid: variability over the last decade
Seco, José; Xavier, José C.; Brierley, Andrew S.; Bustamante, Paco; Coelho, João P.; Gregory, Susan; Fielding, Sophie; Pardal, Miguel A.The concentrations of total and proportions of organic mercury were measured in tissues of 355 individuals of 8 species of Southern Ocean squid (Alluroteuthis antarcticus, Bathyteuthis abyssicola, Filippovia knipovitchi, Galiteuthis glacialis, Gonatus antarcticus, Kondakovia longimana, Psychroteuthis glacialis and Slosarczykovia circumantarctica). Squid were caught around South Georgia (Scotia Sea) during 5 cru...
Spatial variability in total and organic mercury levels in Antarctic krill Euph...
Seco, José; Xavier, José C.; Coelho, João P.; Pereira, Bárbara; Tarling, Geraint; Pardal, Miguel A.; Bustamante, Paco; Stowasser, GabrieleTotal and organic mercury concentrations were determined for males, females and juveniles of Euphausia superba collected at three discrete locations in the Scotia Sea (South Orkney Islands, South Georgia and Antarctic Polar Front) to assess spatial mercury variability in Antarctic krill. There was clear geographic differentiation in mercury concentrations, with specimens from the South Orkney Islands having tot...