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Auteur (down) Zhao, T.; Villeger, S.; Cucherousset, J. doi  openurl
  Titre Accounting for intraspecific diversity when examining relationships between non-native species and functional diversity Type Article scientifique
  Année 2019 Publication Revue Abrégée Oecologia  
  Volume 189 Numéro 1 Pages 171-183  
  Mots-Clés fish; Intraspecific variability; size; disturbance; Non-native species; phenotypic plasticity; Functional diversity; reveals; catfish silurus-glanis; coexistence; Community assembly; energy relationships; Functional traits; success; trait variability  
  Résumé Quantifying changes in functional diversity, the facet of biodiversity accounting for the biological features of organisms, has been advocated as one of the most integrative ways to unravel how communities are affected by human-induced perturbations. The present study assessed how functional diversity patterns varied among communities that differed in the degree to which non-native species dominated the community in temperate lake fish communities and whether accounting for intraspecific functional variability could provide a better understanding of the variation of functional diversity across communities. Four functional diversity indices were computed for 18 temperate lake fish communities along a gradient of non-native fish dominance using morphological functional traits assessed for each life-stage within each species. First, we showed that intraspecific variability in functional traits was high and comparable to interspecific variability. Second, we found that non-native fish were functionally distinct from native fish. Finally, we demonstrated that there was a significant relationship between functional diversity and the degree to which non-native fish currently dominated the community and that this association could be better detected when accounting for intraspecific functional variability. These findings highlighted the importance of incorporating intraspecific variability to better quantify the variation of functional diversity patterns in communities facing human-induced perturbations.  
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  Langue English Langue du Résumé Titre Original  
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  Volume de collection Numéro de collection Edition  
  ISSN 0029-8549 ISBN Médium  
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  Numéro d'Appel MARBEC @ alain.herve @ collection 2479  
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Auteur (down) Yang, W.-K.; Chao, T.-L.; Chuang, H.-J.; Hu, Y.-C.; Lorin-Nebel, C.; Blondeau-Bidet, E.; Wu, W.-Y.; Tang, C.-H.; Tsai, S.-C.; Lee, T.-H. url  doi
openurl 
  Titre Gene expression of Na+/K+-ATPase α-isoforms and FXYD proteins and potential modulatory mechanisms in euryhaline milkfish kidneys upon hypoosmotic challenges Type Article scientifique
  Année 2019 Publication Revue Abrégée Aquaculture  
  Volume 504 Numéro Pages 59-69  
  Mots-Clés FXYD protein; Kidney; Milkfish; Na/K-ATPase; Salinity; α-isoform  
  Résumé Euryhaline milkfish (Chanos chanos) is an important economic species in Taiwan and is able to survive in both seawater (SW) and fresh water (FW). Upon salinity changes, euryhaline fish kidneys play a crucial role in osmoregulation. During this process, Na+/K + -ATPase (NKA) mainly functions in providing the driving force for the other ion-transporting systems. In the milkfish, NKA activities have been widely studied, yet the isoforms and modulatory mechanisms of the NKA α-subunits are unknown. Hence, this study was undertaken to reveal potential modulatory mechanisms, including the isoform composition of NKA α-subunits and FXYD proteins (the modulators of NKA), of NKA expression/activity in milkfish kidneys in response to salinity changes. Four isoforms (CcNKA α1a, α1c, α2, and α3) of NKA α-subunits with distinct tissue distribution were identified in milkfish. Among them, Ccnka α1a and Ccfxyd2 were predominantly expressed in the kidney. Upon salinity challenge, parallel expression patterns were found in renal Ccnka α1a and Ccfxyd2, showing an increase in the FW-acclimated milkfish but not in the SW-acclimated group. After transfer, no matter from SW to FW or FW to SW, most of the renal Ccnka and Ccfxyd genes (particularly Ccnka α1a and Ccfxyd2) significantly changed. Overall, these results suggest that the NKA activity of milkfish kidneys may be modulated via CcNKA α1a and CcFXYD2 for osmoregulation in response to salinity challenges.  
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  Volume de collection Numéro de collection Edition  
  ISSN 0044-8486 ISBN Médium  
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  Numéro d'Appel MARBEC @ isabelle.vidal-ayouba @ collection 2503  
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Auteur (down) Xiong, W.; Gao, S.; Lu, Y.; Wei, L.; Mao, J.; Xie, J.; Cao, Q.; Liu, J.; Bi, J.; Song, X.; Li, B. doi  openurl
  Titre Latrophilin participates in insecticide susceptibility through positively regulating CSP10 and partially compensated by OBPC01 in Tribolium castaneum Type Article scientifique
  Année 2019 Publication Revue Abrégée Pest. Biochem. Physiol.  
  Volume 159 Numéro Pages 107-117  
  Mots-Clés Carbofuran; chemosensory proteins; detoxification; Dichlorvos; evolution; expression; family; gene; identification; Insecticide susceptibility; Latrophilin; odorant-binding proteins; red flour beetle; rna interference; RNA interference; Tribolium castaneum  
  Résumé Latrophilin (LPH) is an adhesion G protein-coupled receptor (aGPCR) that participates in multiple essential physiological processes. Our previous studies have shown that lph is not only indispensable for the development and reproduction of red flour beetles (Tribolium castaneum), but also for their resistance against dichlorvos or carbofuran insecticides. However, the regulatory mechanism of lph-mediated insecticide susceptibility remains unclear. Here, we revealed that knockdown of lph in beetles resulted in opposing changes in two chemoreception genes, chemosensory protein 10 (CSP10) and odorant-binding protein C01 (OBPC01), in which the expression of TcCSP10 was downregulated, whereas the expression of TcOBPC01 was upregulated. TcCSP10 and TcOBPC01 were expressed at the highest levels in early pupal and late larval stages, respectively. High levels of expression of both these genes were observed in the heads (without antennae) of adults. TcCSP10 and TcOBPC01 were significantly induced by dichlorvos or carbofuran between 12 and 72 h (hrs) after exposure, suggesting that they are likely associated with increasing the binding affinity of insecticides, leading to a decrease in sensitivity to the insecticides. Moreover, once these two genes were knocked down, the susceptibility of the beetles to dichlorvos or carbofuran was enhanced. Additionally, RNA interference (RNAi) targeting of lph followed by exposure to dichlorvos or carbofuran also caused the opposing expression levels of TcCSP10 and TcOBPC01 compared to the expression levels of wild-type larvae treated with insecticides alone. All these results indicate that lph is involved in insecticide susceptibility through positively regulating TcCSP10; and the susceptibility could also further partially compensated for through the negative regulation of TcOBPC01 when lph was knockdown in the red flour beetle. Our studies shed new light on the molecular regulatory mechanisms of lph related to insecticide susceptibility.  
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  Langue English Langue du Résumé Titre Original  
  Éditeur de collection Titre de collection Titre de collection Abrégé  
  Volume de collection Numéro de collection Edition  
  ISSN 0048-3575 ISBN Médium  
  Région Expédition Conférence  
  Notes WOS:000482696800015 Approuvé pas de  
  Numéro d'Appel MARBEC @ isabelle.vidal-ayouba @ collection 2645  
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Auteur (down) Virgili, A.; Authier, M.; Boisseau, O.; Cañadas, A.; Claridge, D.; Cole, T.; Corkeron, P.; Dorémus, G.; David, L.; Di‐Méglio, N.; Dunn, C.; Dunn, T.E.; García‐Barón, I.; Laran, S.; Lauriano, G.; Lewis, M.; Louzao, M.; Mannocci, L.; Martínez‐Cedeira, J.; Palka, D.; Panigada, S.; Pettex, E.; Roberts, J.J.; Ruiz, L.; Saavedra, C.; Santos, M.B.; Canneyt, O.V.; Bonales, J.A.V.; Monestiez, P.; Ridoux, V. url  doi
openurl 
  Titre Combining multiple visual surveys to model the habitat of deep-diving cetaceans at the basin scale Type Article scientifique
  Année 2019 Publication Revue Abrégée Global Ecology and Biogeography  
  Volume 28 Numéro 3 Pages 300-314  
  Mots-Clés beaked whales; data-assembling; deep-diving cetaceans; habitat modelling; kogiids; sperm whales  
  Résumé Aim Deep-diving cetaceans are oceanic species exposed to multiple anthropogenic pressures including high intensity underwater noise, and knowledge of their distribution is crucial to manage their conservation. Due to intrinsic low densities, wide distribution ranges and limited presence at the sea surface, these species are rarely sighted. Pooling data from multiple visual surveys sharing a common line-transect methodology can increase sightings but requires accounting for heterogeneity in protocols and platforms. Location North Atlantic Ocean and Mediterranean Sea. Time period 1998 to 2015. Major taxa Ziphiidae; Physeteriidae; Kogiidae. Methods About 1,240,000 km of pooled effort provided 630 sightings of ziphiids, 836 of physeteriids and 106 of kogiids. For each taxon, we built a hierarchical model to estimate the effective strip width depending on observation conditions and survey types. We then modelled relative densities in a generalized additive modelling framework. Geographical predictions were limited to interpolations identified with a gap analysis of environmental space coverage. Results Deeper areas of the North Atlantic gyre were mostly environmental extrapolation in the predictions, thereby highlighting gaps in sampling across the different surveys. For the three species groups, the highest relative densities were predicted along continental slopes, particularly in the western North Atlantic Ocean where the Gulf Stream creates dynamic frontal zones and eddies. Main conclusions Pooling a large number of surveys provided the first basin-wide models of distribution for deep-diving cetaceans, including several data-deficient taxa, across the North Atlantic Ocean and the Mediterranean Sea. These models can help the conservation of elusive and poorly known marine megafauna.  
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  Langue en Langue du Résumé Titre Original  
  Éditeur de collection Titre de collection Titre de collection Abrégé  
  Volume de collection Numéro de collection Edition  
  ISSN 1466-8238 ISBN Médium  
  Région Expédition Conférence  
  Notes Approuvé pas de  
  Numéro d'Appel MARBEC @ isabelle.vidal-ayouba @ collection 2756  
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Auteur (down) Villeger, S.; Fouilland, E.; Argenty, J.; Bouvier, C.; Carré, C.; Bouvier, T. url  doi
openurl 
  Titre Interspecific differences in the effect of fish on marine microbial plankton Type Article scientifique
  Année 2019 Publication Revue Abrégée Aquatic Microbial Ecology  
  Volume 82 Numéro 3 Pages 289-298  
  Mots-Clés  
  Résumé  
  Adresse  
  Auteur institutionnel Thèse  
  Editeur Lieu de Publication Éditeur  
  Langue en Langue du Résumé Titre Original  
  Éditeur de collection Titre de collection Titre de collection Abrégé  
  Volume de collection Numéro de collection Edition  
  ISSN 0948-3055, 1616-1564 ISBN Médium  
  Région Expédition Conférence  
  Notes WOS:000487114000006 Approuvé pas de  
  Numéro d'Appel MARBEC @ isabelle.vidal-ayouba @ collection 2507  
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