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Auteur |
Brosse, S.; Beauchard, O.; Blanchet, S.; Dürr, H.H.; Grenouillet, G.; Hugueny, B.; Lauzeral, C.; Leprieur, F.; Tedesco, P.A.; Villeger, S.; Oberdorff, T. |
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Titre |
Fish-SPRICH: a database of freshwater fish species richness throughout the World |
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Article scientifique |
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Année |
2013 |
Publication |
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Revue Abrégée |
Hydrobiologia |
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Volume  |
700 |
Numéro |
1 |
Pages |
343-349 |
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Mots-Clés |
Endemic; Global extent; Native; Non-native; River drainage basin; fishes |
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Résumé |
There is growing interest in large-scale approaches to ecology, for both plants and animals. In particular, macroecological studies enable examination of the patterns and determinants of species richness of a variety of groups of organism throughout the world, which might have important implications for prediction and mitigation of the consequences of global change. Here, we provide richness data for freshwater fishes, which, with more than 13,000 described species, comprise a quarter of all vertebrate species. We conducted an extensive literature survey of native, non-native (exotic), and endemic freshwater fish species richness. The resulting database, called Fish-SPRICH, contains data from more than 400 bibliographic sources including published papers, books, and grey literature sources. Fish-SPRICH contains richness values at the river basin grain for 1,054 river basins covering more than 80% of the earth's continental surface. This database is currently the most comprehensive global database of native, non-native and endemic freshwater fish richness available at the river basin grain. |
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0018-8158 |
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MARBEC @ isabelle.vidal-ayouba @ |
collection |
604 |
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Auteur |
Sadoul, B.; Geffroy, B.; Lallement, S.; Kearney, M. |
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Titre |
Multiple working hypotheses for hyperallometric reproduction in fishes under metabolic theory |
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Article scientifique |
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Année |
2020 |
Publication |
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Revue Abrégée |
Ecological Modelling |
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Volume |
433 |
Numéro |
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Pages |
109228 |
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Mots-Clés |
Dynamic energy budget; Fishes; Life history; Scaling; Variability |
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Résumé |
Hyperallometric reproduction, whereby large females contribute relatively more to the renewal of the population than small females, is purported to be widespread in wild populations, especially in fish species. Bioenergetic models derived from a sufficiently general metabolic theory should be able to capture such a relationship but it was recently stated that no existing models adequately capture hyperallometric reproduction. If this were true it would seriously challenge our capacity to develop robust predictions of the life history and population dynamics in changing environments for many species. Here, using the European sea bass (Dicentrarchus labrax) as a test case, we demonstrate multiple ways that hyperallometric reproduction in a population may emerge from the Dynamic Energy Budget (DEB) theory, some inherently related to the metabolism and life history and others related to plastic or genetically based intraspecific variation. In addition, we demonstrate an empirical and modelled hypoallometric scaling of reproduction in this species when environment is controlled. This work shows how complex metabolic responses may underlie apparently simple relationships between weight and reproduction in the wild and provides new and testable hypotheses regarding the factors driving reproductive scaling relationships found in the wild. |
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en |
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0304-3800 |
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WOS:000564687300002 |
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MARBEC @ isabelle.vidal-ayouba @ |
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2832 |
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Auteur |
Teulier, L.; Thoral, E.; Queiros, Q.; McKenzie, D.J.; Roussel, D.; Dutto, G.; Gasset, E.; Bourjea, J.; Saraux, C. |
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Titre |
Muscle bioenergetics of two emblematic Mediterranean fish species: Sardina pilchardus and Sparus aurata |
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Article scientifique |
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Année |
2019 |
Publication |
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Revue Abrégée |
Comp. Biochem. Physiol. A-Mol. Integr. Physiol. |
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235 |
Numéro |
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174-179 |
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Mots-Clés |
aerobic capacity; Bioenergetics; gait transition; Lipids; Marine fishes; metabolic fuels; pathways; physiology; Red muscle; responses; skeletal-muscle; slow; swimming performance; temperature |
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Résumé |
We investigated links between swimming behavior and muscle bioenergetics in two emblematic Mediterranean fish species that have very different ecologies and activity levels. European sardines Sardina pilchardus are pelagic, they swim aerobically, school constantly and have high muscle fat content. Gilthead seabream Sparus aurata are bentho-pelagic, they show discontinuous spontaneous swimming patterns and store less fat in their muscle. Estimating the proportion of red and white muscle phenotypes, sardine exhibited a larger proportion of red muscle (similar to 10% of the body mass) compared to gilthead seabream (similar to 5% of the body mass). We firstly studied red and white muscle fiber bioenergetics, using high-resolution respirometers, showing a 4-fold higher oxidation capacity for red compared to white muscle. Secondly, we aimed to compare the red muscle ability to oxidize either lipids or carbohydrates. Sardine red muscle had a 3-fold higher oxidative capacity than gilthead seabream and a greater capacity to oxidize lipids. This study provides novel insights into physiological mechanisms underlying the different lifestyles of these highly-prized species. |
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English |
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1095-6433 |
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WOS:000481561100018 |
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MARBEC @ isabelle.vidal-ayouba @ |
collection |
2629 |
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Auteur |
Blasco, F.R.; Esbaugh, A.J.; Killen, S.S.; Rantin, F.T.; Taylor, E.W.; McKenzie, D.J. |
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Titre |
Using aerobic exercise to evaluate sub-lethal tolerance of acute warming in fishes |
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Article scientifique |
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Année |
2020 |
Publication |
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Revue Abrégée |
J. Exp. Biol. |
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Volume |
223 |
Numéro |
9 |
Pages |
jeb218602 |
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Mots-Clés |
capacity; climate-change; CTmax; hypoxia tolerance; marine fishes; Oreochromis niloticus; oxygen-tensions; performance; Piaractus mesopotamicus; scope; sea bass; temperature; thermal tolerance |
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Résumé |
We investigated whether fatigue from sustained aerobic swimming provides a sub-lethal endpoint to define tolerance of acute warming in fishes, as an alternative to loss of equilibrium (LOE) during a critical thermal maximum (CTmax) protocol. Two species were studied, Nile tilapia (Oreochromis niloticus) and pacu (Piaractus mesopotamicus). Each fish underwent an incremental swim test to determine gait transition speed (U-GT), where it first engaged the unsteady anaerobic swimming mode that preceded fatigue. After suitable recovery, each fish was exercised at 85% of their own U-GT and warmed 1 degrees C every 30 min, to identify the temperature at which they fatigued, denoted as CTswim. Fish were also submitted to a standard CTmax, warming at the same rate as CTswim, under static conditions until LOE. All individuals fatigued in CTswim, at a mean temperature approximately 2 degrees C lower than their CTmax. Therefore, if exposed to acute warming in the wild, the ability to perform aerobic metabolic work would be constrained at temperatures significantly below those that directly threatened survival. The collapse in performance at CTswim was preceded by a gait transition qualitatively indistinguishable from that during the incremental swim test. This suggests that fatigue in CTswim was linked to an inability to meet the tissue oxygen demands of exercise plus warming. This is consistent with the oxygen and capacity limited thermal tolerance (OCLTT) hypothesis, regarding the mechanism underlying tolerance of warming in fishes. Overall, fatigue at CTswim provides an ecologically relevant sub-lethal threshold that is more sensitive to extreme events than LOE at CTmax. |
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English |
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ISSN |
0022-0949 |
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Notes |
WOS:000541842300012 |
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Numéro d'Appel |
MARBEC @ isabelle.vidal-ayouba @ |
collection |
2817 |
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Auteur |
Bouchoucha, M.; Pecheyran, C.; Gonzalez, J.L.; Lenfant, P.; Darnaude, A.M. |
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Titre |
Otolith fingerprints as natural tags to identify juvenile fish life in ports |
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Article scientifique |
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Année |
2018 |
Publication |
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Revue Abrégée |
Estuar. Coast. Shelf Sci. |
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Volume |
212 |
Numéro |
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Pages |
210-218 |
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Mots-Clés |
coastal habitats; Coastal areas; Contamination; elemental fingerprints; Fish; genus diplodus; la-icpms; nursery habitats; Nursery habitats; situ speciation measurements; sparid fishes; stable-isotopes; thin-films dgt; water chemistry; western mediterranean sea |
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Résumé |
The construction of ports has caused substantial habitat destruction in coastal areas previously used as nursery grounds by many fish species, with consequences to fish stocks. These artificial coastal areas might provide alternative nursery habitats for several species for juvenile fish abundances and growth in ports, although their contribution to adult stocks had never been estimated. The variability of otolith composition in the juveniles of two Diplodus species was investigated in three contrasting port areas and two adjacent coastal juvenile habitats of the Bay of Toulon (northwestern Mediterranean) in order to determine the possible use of otolith fingerprints as natural tags for the identification of juvenile fishes in ports. The global accuracy of discrimination between ports and coastal areas was very high (94%) irrespective of species, suggesting that otolith fingerprints can be used with confidence to retrospectively identify past residency in the ports of this bay. However, Ba was systematically the most discriminating element, since its concentrations in otoliths were generally higher outside ports than in inside them, probably due to river runoff. Moreover, otolith signatures varied greatly by species and between sampling sites. Furthermore, although Cu and Pb concentrations in water were at least 2.3-34-fold higher inside ports than outside, this was not consistently reflected in fish otoliths, confirming that spatial differences in otolith concentrations depend on the species and do not directly reflect differences in environmental contamination levels. Therefore, it seems unlikely that otolith microchemistry could provide a universal fingerprint capable of discriminating ports from other coastal areas. Nevertheless, the contribution of ports to adult fish populations can be determined well by establishing a library of otolith fingerprints for all juvenile habitats. |
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English |
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ISSN |
0272-7714 |
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Numéro d'Appel |
MARBEC @ alain.herve @ |
collection |
2427 |
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| Lien permanent pour cet enregistrement |
