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Ecology of the non-native snail Sinotaia cf quadrata (Caenogastropoda: Viviparidae). A study in a lowland stream of South America with different water qualities Anais da ABC (AABC)
FERREIRA,ANA CLARA; PAZ,ESTEFANÍA L.; RUMI,ALEJANDRA; OCON,CAROLINA; ALTIERI,PAULA; CAPÍTULO,ALBERTO RODRIGUES.
ABSTRACT Sinotaia quadrata is a snail native from Asia recorded for the first time in South America in 2009 in central Argentina. In 2015, this species was also found in a lowland stream with different water qualities. Our aims were to contribute to the knowledge of its population ecology and to compare the individuals from the two locations anatomically. Snails were searched at 6 sites, where physicochemical and hydraulic parameters were measured. Biological samples were also taken at two sites (S3 and S4) to study the population traits of S. cf quadrata (density, size structure, fecundity and sex ratio) and to assess the water quality through macroinvertebrates' biological indices (richness, diversity and IBPamp). Physicochemical and biological...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Alien species; Life history traits; Lowland streams; Tolerance; Water quality.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000301059
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Modélisation bioénergétique de la variabilité des traits d’histoire de vie de l’anchois et de la sardine entre le golfe du Lion, le golfe de Gascogne et la Manche ArchiMer
Menu, Clara.
Small pelagic fish show a general decrease in size and body condition over the past two decades in the North-East Atlantic. The underlying factors are still not well understood, however recent studies point to a bottom-up control. In order to understand how the environment impacts the main biological functions, i.e. growth, reproduction and maintenance, we adopted a bioenergetic modelling framework based on the Dynamic Energy Budget theory. To improve the robustness of our study, we chose a comparative approach between two species, Engraulis encrasicolus and Sardina pilchardus, both living in three areas, namely the English Channel, the Bay of Biscay and the Gulf of Lion. Our model is calibrated over the Bay of Biscay and then applied to the other areas,...
Tipo: Text Palavras-chave: Engraulis encrasicolus; Sardina pilchardus; Théorie Dynamic Energy Budget; Traits d'histoire de vie; Manche; Golfe de Gascogne; Golfe du Lion; Engraulis encrasicolus; Sardina pilchardus; Dynamic Energy Budget theory; Life history traits; English Channel; Bay of Biscay; Gulf of Lion.
Ano: 2020 URL: https://archimer.ifremer.fr/doc/00667/77900/80092.pdf
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Implications de la couleur du bruit environnemental sur la variabilité des stocks halieutiques exploités ArchiMer
Rouyer, Tristan.
The origin of fish stocks variability is a key question in fisheries science. The exploitation indeed has an important effect in terms of biomass reduction, but environmental forcing is of central interest as it affects numerous key biological processes. Recent theoretical results have shown that the nature of the environmental fluctuations, the environmental noise, has important ecological consequences on populations and particularly on their fluctuations. In addition the effects of exploitation, that are not a simple removal of individuals but also profoundly modifies the demography, the structure and the trophic interactions of fish stocks, can interact with environmental effects. Through an extensive analysis of time series we aim at understanding the...
Tipo: Text Palavras-chave: Fisheries; Life history traits; Fish stocks variability; Environmental noise; Wavelets; Time series; Pêche; Traits d'histoire de vie; Variabilité des stocks halieutiques; Couleur du bruit environnemental; Ondelettes; Séries temporelles.
Ano: 2008 URL: http://archimer.ifremer.fr/doc/2008/these-6596.pdf
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Mécanismes sous-jacents du contrôle bottom-up des populations de sardines dans le Golfe du Lion : enseignements tirés des expériences et de la modélisation ArchiMer
Queiros, Quentin.
The Gulf of Lions has faced a sharp drop in the catches of its two main small pelagic exploited species, the sardine Sardina pilchardus and the anchovy Engraulis encrasicolus since the mid-2000s, despite both population abundances remaining high. This situation has been due to a severe decrease in individual body condition and size as a result of both lower growth and the disappearance of the oldest and largest individuals. While overfishing, predation or disease outbreaks have been refuted to explain this situation, one major hypothesis remained to be investigated. A potential shift in sardine and anchovy diet towards smaller planktonic prey indeed suggested bottom-up control as the main driver of these populations in the Gulf of Lions. The first aim of...
Tipo: Text Palavras-chave: Poissons petits pélagiques; Expérience; Processus bottom-up; Modélisation; Traits d'histoire de vie; Small pelagic fish; Experiment; Bottom-Up processes; Modeling; Life history traits.
Ano: 2019 URL: https://archimer.ifremer.fr/doc/00692/80420/83556.pdf
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Comparing growth in surface and cave morphs of the species Astyanax mexicanus: insights from scales ArchiMer
Simon, Victor; Elleboode, Romain; Mahe, Kelig; Legendre, Laurent; Ornelas-garcia, Patricia; Espinasa, Luis; Retaux, Sylvie.
Background Life in the darkness of caves is accompanied, throughout phyla, by striking phenotypic changes including the loss or severe reduction in eyes and pigmentation. On the other hand, cave animals have undergone constructive changes, thought to be adaptive, to survive in this extreme environment. The present study addresses the question of the evolution of growth in caves, taking advantage of the comparison between the river-dwelling and the cave-dwelling morphs of the Mexican tetra, Astyanax mexicanus. Results A sclerochronology approach was undertaken to document the growth of the species in these two very distinct habitats. Scales from 158 wild Astyanax mexicanus specimens were analyzed from three caves (Pachón, Tinaja and Subterráneo) and two...
Tipo: Text Palavras-chave: Cave; Fish; Size; Age; Scales; Growth; Food; Comparative biology; Life history traits.
Ano: 2017 URL: http://archimer.ifremer.fr/doc/00412/52337/53124.pdf
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Une approche bioénergétique pour la comparaison des traits d'histoire de vie de l'anchois et de la sardine du golfe de Gascogne ArchiMer
Gatti, Paul.
Anchovy and sardine belong to the guild of small pelagic fish and are of peculiar importance at the scales of ecosystems and fisheries. Both species are worldwide spread and commonly occur in the same ecosystems. They display large interannual variability in biomass with markedly different trends or even asynchronous. A growing literature suggests that those dynamics are due to respective sensibility to environmental conditions driven by different biological traits. A priori both species are very similar but show slightly distinct feeding behaviours and reproductive strategies. Understanding divergences in both species biology and life history strategies is thus crucial to understand and predict past and future dynamics of these stocks. The aim of this PHD...
Tipo: Text Palavras-chave: Bioénergétique; Modélisation individu centrée; Cycle de vie; Traits d'histoire de vie; Petits poissons pélagiques; Bioenergetics; Individual based model; Life cycle; Life history traits; Small pelagic fishes.
Ano: 2016 URL: https://archimer.ifremer.fr/doc/00498/60917/64277.pdf
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Major changes in sardine growth and body condition in the Bay of Biscay between 2003 and 2016: Temporal trends and drivers ArchiMer
Veron, Matthieu; Duhamel, Erwan; Bertignac, Michel; Pawlowski, Lionel; Huret, Martin.
In the Bay of Biscay, mean body length and weight of sardines (Sardina pilchardus) have been decreasing since the early 2000s and could severely impact the fishing and seafood industry sector. These trends have no apparent link with fishing pressure, although the latter has been increasing since the late 2000s. As part of an effort to develop suitable assessment and management tools for this stock, we investigated the life-history traits of sardine and analyze its seasonal and inter-annual variations. Based on 14 years of morphometric data from both scientific surveys and professional samples, we analyzed the variability in sardine body condition and its responses to environmental changes. Generalized Additive Models revealed an age-sex specific decreasing...
Tipo: Text Palavras-chave: Body condition; Growth; Decadal trends; Environmental effect; Life history traits; Sardina pilchardus; Bay of Biscay.
Ano: 2020 URL: https://archimer.ifremer.fr/doc/00604/71562/69989.pdf
Registros recuperados: 7
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