Competing with each other: Fish isotopic niche in two resource availability contexts

Pelage, Latifa; Lucena‐Frédou, Flávia; Eduardo, Leandro Nolé; Loc’h, François Le; Bertrand, Arnaud; Lira, Alex Souza; Frédou, Thierry

doi:10.3389/fmars.2022.975091

Cited by 9 publications

(3 citation statements)

References 59 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Generalist species are believed to have a narrower isotopic niche width than specialist species due to generalists having similar isotopic signatures because they are sampling the same prey items in similar proportions and thus integrate their diet [59,60]. The niche width data from this study suggest a higher variability in the diets among L. xanthurus individuals, resulting in specialized diets [61], compared to individuals belonging to other fish species that were thus, relatively, generalists.…”

Section: Trophic Levels and Niche Overlap Of The Four Mcb Fish Speciesmentioning

confidence: 79%

Spatial, Temporal, and Interspecific Differences in Composition of Stable Isotopes in Fishes in Maryland Coastal Bays

Richardson,

Chigbu,

Ishaque

2024

Diversity

View full text Add to dashboard Cite

Carbon (δ13C) and nitrogen (δ15N) isotopes were used to evaluate spatial, temporal, and interspecific differences in trophic relationships of four fish species (Paralichthys dentatus, Anchoa mitchilli, Leiostomus xanthurus, and Bairdiella chrysoura) in Maryland’s coastal bays. The δ13C values for all species were more enriched in 2017 than in 2018, a year of higher-than-average rainfall that likely caused higher amounts of terrestrial carbon to enter the estuary. There were significant differences among species in the δ13C values, with L. xanthurus being the least depleted (−17.2‰ in 2017; −18.8‰ in 2018). Spatially, the δ13C values of the species, particularly P. dentatus and B. chrysoura, were more depleted in the northern bays, which have a higher nutrient content and receive more freshwater inflow directly from tributaries, than the southern bays. The observed δ13C values (−19.5 ± 0.2‰ to –17.2 ± 0.3‰), however, indicate that marine phytoplankton was the primary carbon source of the fishes. Overall, A. mitchilli was the most enriched in δ15N (13.0‰), and L. xanthurus was the most depleted (10.2‰). δ15N was more enriched in fish from the more human-impacted northern bays than in fish from the southern bays, though this might also have stemmed from the differences in the diet composition of the species in the northern and southern bays. A. mitchilli had the highest trophic level, while L. xanthurus and P. dentatus had the lowest trophic levels. Niche breadth was widest in L. xanthurus compared to the other fish species, suggesting a higher variability in diets among L. xanthurus individuals, leading to specialized diets. There was a high niche overlap between B. chrysoura, A. mitchilli, and L. xanthurus, which indicates they fed on similar prey resources.

show abstract

Section: Trophic Levels and Niche Overlap Of The Four Mcb Fish Speciesmentioning

confidence: 79%

Spatial, Temporal, and Interspecific Differences in Composition of Stable Isotopes in Fishes in Maryland Coastal Bays

Richardson,

Chigbu,

Ishaque

2024

Diversity

View full text Add to dashboard Cite

show abstract

“…Boreal and Lusitanian species displayed trophic niche overlap, indicating that competition for food resources exists between the two biogeographical groups (Gaspar et al., 2022; Pankow et al., 2021; Pelage et al., 2022). The surface area of the Boreal group trophic niche overlapped by the Lusitanian group increased, while the surface area of the Lusitanian group trophic niche overlapped by the Boreal group decreased.…”

Section: Discussionmentioning

confidence: 99%

Boreal and Lusitanian species display trophic niche variation in temperate waters

Amelot,

Robert,

Mouchet

et al. 2023

Ecology and Evolution

View full text Add to dashboard Cite

Climate change has non‐linear impacts on species distributions and abundance that have cascading effects on ecosystem structure and function. Among them are shifts in trophic interactions within communities. Sites found at the interface between two or more biogeographical regions, where species with diverse thermal preferenda are assembled, are areas of strong interest to study the impact of climate change on communities' interactions. This study examined variation in trophic structure in the Celtic Sea, a temperate environment that hosts a mixture of cold‐affiliated Boreal species and warm‐affiliated Lusitanian species. Using carbon and nitrogen stable isotope ratios, trophic niche area, width, and position were investigated for 10 abundant and commercially important demersal fish species across space and time. In general, the niches of Boreal species appear to be contracting while those of Lusitanian species expand, although there are some fluctuations among species. These results provide evidence that trophic niches can undergo rapid modifications over short time periods (study duration: 2014–2021) and that this process may be conditioned by species thermal preferenda. Boreal species displayed spatial variation in trophic niche width and seem to be facing increased competition with Lusitanian species for food resources. These findings underscore the need to utilize indicators related to species trophic ecology to track the ecosystem alterations induced by climate change. Such indicators could reveal that the vulnerability of temperate ecosystems is currently being underestimated.

show abstract

“…Competition is a critical evolutionary mechanism that influences the spatio-temporal and dynamic pattern and persistence of species [243]. Tissues and organs may be considered as "social groups" governed by "societal rules" that allow for normal cells to cooperate, while mutant cells compete and expand their territory with the biomolecular aid of their neighboring non-tumor cells [244].…”

Section: Primary Breast Tumor As a Microsystemmentioning

confidence: 99%

Onco-Breastomics: An Eco-Evo-Devo Holistic Approach

Neagu,

Whitham,

Bruno

et al. 2024

IJMS

View full text Add to dashboard Cite

Known as a diverse collection of neoplastic diseases, breast cancer (BC) can be hyperbolically characterized as a dynamic pseudo-organ, a living organism able to build a complex, open, hierarchically organized, self-sustainable, and self-renewable tumor system, a population, a species, a local community, a biocenosis, or an evolving dynamical ecosystem (i.e., immune or metabolic ecosystem) that emphasizes both developmental continuity and spatio-temporal change. Moreover, a cancer cell community, also known as an oncobiota, has been described as non-sexually reproducing species, as well as a migratory or invasive species that expresses intelligent behavior, or an endangered or parasite species that fights to survive, to optimize its features inside the host’s ecosystem, or that is able to exploit or to disrupt its host circadian cycle for improving the own proliferation and spreading. BC tumorigenesis has also been compared with the early embryo and placenta development that may suggest new strategies for research and therapy. Furthermore, BC has also been characterized as an environmental disease or as an ecological disorder. Many mechanisms of cancer progression have been explained by principles of ecology, developmental biology, and evolutionary paradigms. Many authors have discussed ecological, developmental, and evolutionary strategies for more successful anti-cancer therapies, or for understanding the ecological, developmental, and evolutionary bases of BC exploitable vulnerabilities. Herein, we used the integrated framework of three well known ecological theories: the Bronfenbrenner’s theory of human development, the Vannote’s River Continuum Concept (RCC), and the Ecological Evolutionary Developmental Biology (Eco-Evo-Devo) theory, to explain and understand several eco-evo-devo-based principles that govern BC progression. Multi-omics fields, taken together as onco-breastomics, offer better opportunities to integrate, analyze, and interpret large amounts of complex heterogeneous data, such as various and big-omics data obtained by multiple investigative modalities, for understanding the eco-evo-devo-based principles that drive BC progression and treatment. These integrative eco-evo-devo theories can help clinicians better diagnose and treat BC, for example, by using non-invasive biomarkers in liquid-biopsies that have emerged from integrated omics-based data that accurately reflect the biomolecular landscape of the primary tumor in order to avoid mutilating preventive surgery, like bilateral mastectomy. From the perspective of preventive, personalized, and participatory medicine, these hypotheses may help patients to think about this disease as a process governed by natural rules, to understand the possible causes of the disease, and to gain control on their own health.

show abstract

Competing with each other: Fish isotopic niche in two resource availability contexts

Cited by 9 publications

References 59 publications

Spatial, Temporal, and Interspecific Differences in Composition of Stable Isotopes in Fishes in Maryland Coastal Bays

Spatial, Temporal, and Interspecific Differences in Composition of Stable Isotopes in Fishes in Maryland Coastal Bays

Boreal and Lusitanian species display trophic niche variation in temperate waters

Onco-Breastomics: An Eco-Evo-Devo Holistic Approach

Contact Info

Product

Resources

About