1
|
Britton JR, Cucherousset J, Dominguez Almela V. Novel trophic subsidies from recreational angling transform the trophic ecology of freshwater fishes. J Appl Ecol 2022. [DOI: 10.1111/1365-2664.14237] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- J. Robert Britton
- Department of Life and Environmental Sciences, Faculty of Science and Technology Bournemouth University Dorset United Kingdom
| | - Julien Cucherousset
- CNRS, Université Paul Sabatier; UMR 5174 EDB (Laboratoire Évolution & Diversité Biologique) Toulouse France
| | - Victoria Dominguez Almela
- Department of Life and Environmental Sciences, Faculty of Science and Technology Bournemouth University Dorset United Kingdom
| |
Collapse
|
2
|
Chibowski P, Brzeziński M, Suska-Malawska M, Zub K. Diet/Hair and Diet/Faeces Trophic Discrimination Factors for Stable Carbon and Nitrogen Isotopes, and Hair Regrowth in the Yellow-Necked Mouse and Bank Vole. ANN ZOOL FENN 2022. [DOI: 10.5735/086.059.0115] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Affiliation(s)
- Piotr Chibowski
- Faculty of Biology, Biological and Chemical Research Centre, University of Warsaw, Żwirki i Wigury 101, PL-02-089 Warsaw, Poland
| | - Marcin Brzeziński
- Faculty of Biology, Biological and Chemical Research Centre, University of Warsaw, Żwirki i Wigury 101, PL-02-089 Warsaw, Poland
| | - Małgorzata Suska-Malawska
- Faculty of Biology, Biological and Chemical Research Centre, University of Warsaw, Żwirki i Wigury 101, PL-02-089 Warsaw, Poland
| | - Karol Zub
- Mammal Research Institute, Polish Academy of Sciences, Stoczek 1, PL-17-230 Białowieża, Poland
| |
Collapse
|
3
|
Scharnweber K, Andersson ML, Chaguaceda F, Eklöv P. Intraspecific differences in metabolic rates shape carbon stable isotope trophic discrimination factors of muscle tissue in the common teleost Eurasian perch ( Perca fluviatilis). Ecol Evol 2021; 11:9804-9814. [PMID: 34306663 PMCID: PMC8293782 DOI: 10.1002/ece3.7809] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Accepted: 06/02/2021] [Indexed: 11/09/2022] Open
Abstract
Stable isotopes represent a unique approach to provide insights into the ecology of organisms. δ13C and δ15N have specifically been used to obtain information on the trophic ecology and food-web interactions. Trophic discrimination factors (TDF, Δ13C and Δ15N) describe the isotopic fractionation occurring from diet to consumer tissue, and these factors are critical for obtaining precise estimates within any application of δ13C and δ15N values. It is widely acknowledged that metabolism influences TDF, being responsible for different TDF between tissues of variable metabolic activity (e.g., liver vs. muscle tissue) or species body size (small vs. large). However, the connection between the variation of metabolism occurring within a single species during its ontogeny and TDF has rarely been considered.Here, we conducted a 9-month feeding experiment to report Δ13C and Δ15N of muscle and liver tissues for several weight classes of Eurasian perch (Perca fluviatilis), a widespread teleost often studied using stable isotopes, but without established TDF for feeding on a natural diet. In addition, we assessed the relationship between the standard metabolic rate (SMR) and TDF by measuring the oxygen consumption of the individuals.Our results showed a significant negative relationship of SMR with Δ13C, and a significant positive relationship of SMR with Δ15N of muscle tissue, but not with TDF of liver tissue. SMR varies inversely with size, which translated into a significantly different TDF of muscle tissue between size classes.In summary, our results emphasize the role of metabolism in shaping-specific TDF (i.e., Δ13C and Δ15N of muscle tissue) and especially highlight the substantial differences between individuals of different ontogenetic stages within a species. Our findings thus have direct implications for the use of stable isotope data and the applications of stable isotopes in food-web studies.
Collapse
Affiliation(s)
- Kristin Scharnweber
- Department of Ecology and Genetics; LimnologyUppsala UniversityUppsalaSweden
- Department of Plant Ecology and Nature ConservationUniversity of PotsdamPotsdamGermany
| | | | - Fernando Chaguaceda
- Department of Ecology and Genetics; LimnologyUppsala UniversityUppsalaSweden
- Present address:
Department of Aquatic Sciences and AssessmentSwedish University of Agricultural SciencesUppsalaSweden
| | - Peter Eklöv
- Department of Ecology and Genetics; LimnologyUppsala UniversityUppsalaSweden
| |
Collapse
|
4
|
Biological and trophic consequences of genetic introgression between endemic and invasive Barbus fishes. Biol Invasions 2021; 23:3351-3368. [PMID: 34054333 PMCID: PMC8149140 DOI: 10.1007/s10530-021-02577-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Accepted: 05/13/2021] [Indexed: 12/02/2022]
Abstract
Genetic introgression with native species is recognized as a detrimental impact resulting from biological invasions involving taxonomically similar invaders. Whilst the underlying genetic mechanisms are increasingly understood, the ecological consequences of introgression are relatively less studied, despite their utility for increasing knowledge on how invasion impacts can manifest. Here, the ecological consequences of genetic introgression from an invasive congener were tested using the endemic barbel populations of central Italy, where the invader was the European barbel Barbus barbus. Four populations of native Barbus species (B. plebejus and B. tyberinus) were studied: two purebred and two completely introgressed with alien B. barbus. Across the four populations, differences in their biological traits (growth, body condition and population demographic structure) and trophic ecology (gut content analysis and stable isotope analysis) were tested. While all populations had similar body condition and were dominated by fish up to 2 years of age, the introgressed fish had substantially greater lengths at the same age, with maximum lengths 410–460 mm in hybrids versus 340–360 mm in native purebred barbel. The population characterized by the highest number of introgressed B. barbus alleles (81 %) had the largest trophic niche and a substantially lower trophic position than the other populations through its exploitation of a wider range of resources (e.g. small fishes and plants). These results attest that the genetic introgression of an invasive congener with native species can result in substantial ecological consequences, including the potential for cascading effects.
Collapse
|
5
|
Ordóñez-Grande B, Fernández-Alacid L, Sanahuja I, Sánchez-Nuño S, Fernández-Borràs J, Blasco J, Ibarz A. Evaluating mucus exudation dynamics through isotopic enrichment and turnover of skin mucus fractions in a marine fish model. CONSERVATION PHYSIOLOGY 2020; 8:coaa095. [PMID: 33442471 PMCID: PMC7787050 DOI: 10.1093/conphys/coaa095] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Revised: 08/12/2020] [Accepted: 11/12/2020] [Indexed: 06/12/2023]
Abstract
Fish skin mucus is composed of insoluble components, which form the physical barrier, and soluble components, which are key for interrelationship functions. Mucus is continuously secreted, but rates of production and exudation are still unknown, as are the underlying mechanisms. Using stable isotope analysis, here, we evaluate skin mucus turnover and renewal in gilthead sea bream, separating raw mucus and its soluble and insoluble fractions. Isotopic abundance analysis reveals no differences between mucus and white muscle, thus confirming mucus samples as reliable non-invasive biomarkers. Mucus production was evaluated using a single labelled meal packaged in a gelatine capsule, with both 13C and 15N, via a time-course trial. 13C was gradually allocated to skin mucus fractions over the first 12 h and was significantly (4-fold) higher in the soluble fraction, indicating a higher turnover of soluble mucus components that are continuously produced and supplied. 15N was also gradually allocated to mucus, indicating incorporation of new proteins containing the labelled dietary amino acids, but with no differences between fractions. When existent mucus was removed, dietary stable isotopes revealed stimulated mucus neoformation dependent on the components. All this is novel knowledge concerning skin mucus dynamics and turnover in fish and could offer interesting non-invasive approaches to the use of skin mucus production in ecological or applied biological studies such as climate change effects, human impact, alterations in trophic networks or habitat degradation, especially of wild-captured species or protected species.
Collapse
Affiliation(s)
| | - Laura Fernández-Alacid
- Corresponding author: Department of Cell Biology, Physiology and Immunology, University of Barcelona, Barcelona, Spain.
| | - Ignasi Sanahuja
- Department of Cell Biology, Physiology and Immunology, University of Barcelona, Barcelona, Spain
| | - Sergio Sánchez-Nuño
- Department of Cell Biology, Physiology and Immunology, University of Barcelona, Barcelona, Spain
| | - Jaume Fernández-Borràs
- Department of Cell Biology, Physiology and Immunology, University of Barcelona, Barcelona, Spain
| | - Josefina Blasco
- Department of Cell Biology, Physiology and Immunology, University of Barcelona, Barcelona, Spain
| | - Antoni Ibarz
- Department of Cell Biology, Physiology and Immunology, University of Barcelona, Barcelona, Spain
| |
Collapse
|
6
|
Exploring source differences on diet-tissue discrimination factors in the analysis of stable isotope mixing models. Sci Rep 2020; 10:15816. [PMID: 32978550 PMCID: PMC7519091 DOI: 10.1038/s41598-020-73019-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2020] [Accepted: 09/10/2020] [Indexed: 11/08/2022] Open
Abstract
Stable isotope mixing models are regularly used to provide probabilistic estimates of source contributions to dietary mixtures. Whilst Bayesian implementations of isotope mixing models have become prominent, the use of appropriate diet-tissue discrimination factors (DTDFs) remains as the least resolved aspect. The DTDFs are critical in providing accurate inferences from these models. Using both simulated and laboratory-based experimental data, this study provides conceptual and practical applications of isotope mixing models by exploring the role of DTDFs. The experimental study used Mozambique Tilapia Oreochromis mossambicus, a freshwater fish, to explore multi-tissue variations in isotopic incorporation patterns, and to evaluate isotope mixing model outputs based on the experiment- and literature-based DTDFs. Isotope incorporation patterns were variable for both muscle and fin tissues among the consumer groups that fed diet sources with different stable isotope values. Application of literature-based DTDFs in isotope mixing models consistently underestimated the dietary proportions of all single-source consumer groups. In contrast, application of diet-specific DTDFs provided better dietary estimates for single-source consumer groups. Variations in the proportional contributions of the individual sources were, nevertheless, observed for the mixed-source consumer group, which suggests that isotope assimilation of the individual food sources may have been influenced by other underlying physiological processes. This study provides evidence that stable isotope values from different diet sources exhibit large variations as they become incorporated into consumer tissues. This suggests that the application of isotope mixing models requires consideration of several aspects such as diet type and the associated biological processes that may influence DTDFs.
Collapse
|
7
|
Britton JR, Gutmann Roberts C, Amat Trigo F, Nolan ET, De Santis V. Predicting the ecological impacts of an alien invader: Experimental approaches reveal the trophic consequences of competition. J Anim Ecol 2019; 88:1066-1078. [DOI: 10.1111/1365-2656.12996] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Accepted: 03/03/2019] [Indexed: 11/27/2022]
Affiliation(s)
- J. Robert Britton
- Department of Life and Environmental Sciences Bournemouth University Poole UK
| | | | - Fatima Amat Trigo
- Department of Life and Environmental Sciences Bournemouth University Poole UK
- Departmento de Zoología y Antropología Física Universidad de Murcia Murcia Spain
| | - Emma T. Nolan
- Department of Life and Environmental Sciences Bournemouth University Poole UK
| | - Vanessa De Santis
- Department of Life and Environmental Sciences Bournemouth University Poole UK
- Department of Theoretical and Applied Sciences University of Insubria Varese Italy
| |
Collapse
|
8
|
Kambikambi MJ, Chakona A, Kadye WT. The influence of diet composition and tissue type on the stable isotope incorporation patterns of a small-bodied southern African minnow Enteromius anoplus (Cypriniformes, Cyprinidae). RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2019; 33:613-623. [PMID: 30672616 DOI: 10.1002/rcm.8393] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2018] [Revised: 01/17/2019] [Accepted: 01/17/2019] [Indexed: 06/09/2023]
Abstract
RATIONALE In trophic ecology, the use of stable isotope data relies on the general understanding of isotope turnover rates and diet-to-tissue discrimination factors (DTDFs). Recent studies on the application of stable isotope data have shown that isotope turnover rates and DTDFs can be influenced by many factors, including diet composition and tissue type. This study investigated the influence of diet composition and tissue type on stable isotope incorporation patterns in a small-bodied African minnow, the chubbyhead barb Enteromius anoplus. METHODS The isotopic incorporation patterns of carbon (δ13 C values) and nitrogen (δ15 N values) into white muscle and caudal fin tissues of the chubbyhead barb were examined using two isotopically different diets. Controlled-diet stable isotope feeding trials using a fishmeal-based diet (diet 1) and a soya-based diet (diet 2) were conducted over a 180-day period for the chubbyhead barb. RESULTS The two diets had contrasting isotopic incorporation patterns: diet 1 was associated with progressively high δ13 C and δ15 N values, whereas diet 2 was associated with progressively low δ13 C and δ15 N values over time for both muscle and fin tissues. The δ13 C turnover rates were similar for both tissues (56 and 61 days), whereas the δ15 N turnover rates differed between fin and muscle tissue in both diets (diet 1 = 4 and 130 days, and diet 2 = 72 and 300 days, respectively). The DTDFs were similar for both tissues in diet 1 (Δ13 C: -3.96 to -2.62‰, Δ15 N: 1.98 to 2.61‰) and diet 2 (Δ13 C: 4.05 to 5.24‰, Δ15 N: 8.45 to 9.69‰). CONCLUSIONS These results suggest that fin tissue can potentially be used as an alternative for muscle tissue in food web studies with a reasonable level of error. The isotopic turnover rate and DTDFs estimates for E. anoplus, however, require consideration of diet composition because different diets may differ in their isotopic incorporation patterns.
Collapse
Affiliation(s)
- Manda J Kambikambi
- Department of Ichthyology and Fisheries Science, Rhodes University, PO Box 94, Grahamstown, 6140, South Africa
| | - Albert Chakona
- South African Institute for Aquatic Biodiversity, Private Bag 1015, Grahamstown, 6140, South Africa
| | - Wilbert T Kadye
- Department of Ichthyology and Fisheries Science, Rhodes University, PO Box 94, Grahamstown, 6140, South Africa
| |
Collapse
|
9
|
Trophic consequences of an invasive, small-bodied non-native fish, sunbleak Leucaspius delineatus, for native pond fishes. Biol Invasions 2018. [DOI: 10.1007/s10530-018-1824-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
10
|
Evangelista C, Lecerf A, Britton JR, Cucherousset J. Resource composition mediates the effects of intraspecific variability in nutrient recycling on ecosystem processes. OIKOS 2017. [DOI: 10.1111/oik.03787] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Charlotte Evangelista
- EcoLab (Laboratoire Ecologie Fonctionnelle et Environnement), Univ. de Toulouse, CNRS, INP, UPS; Toulouse France
| | - Antoine Lecerf
- EcoLab (Laboratoire Ecologie Fonctionnelle et Environnement), Univ. de Toulouse, CNRS, INP, UPS; Toulouse France
| | - J. Robert Britton
- Dept for Life and Environmental Sciences; Faculty of Science and Technology, Bournemouth Univ., Poole; Dorset UK
| | - Julien Cucherousset
- CNRS, Univ. Toulouse III Paul Sabatier, ENFA, UMR 5174 EDB (Laboratoire Evolution & Diversité Biologique), 118 route de Narbonne; FR-31062 Toulouse France
| |
Collapse
|
11
|
|
12
|
Bašić T, Britton JR. Characterizing the trophic niches of stocked and resident cyprinid fishes: consistency in partitioning over time, space and body sizes. Ecol Evol 2016; 6:5093-104. [PMID: 27547336 PMCID: PMC4979730 DOI: 10.1002/ece3.2272] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2016] [Revised: 05/27/2016] [Accepted: 05/31/2016] [Indexed: 11/30/2022] Open
Abstract
Hatchery‐reared fish are commonly stocked into freshwaters to enhance recreational angling. As these fishes are often of high trophic position and attain relatively large sizes, they potentially interact with functionally similar resident fishes and modify food‐web structure. Hatchery‐reared barbel Barbus barbus are frequently stocked to enhance riverine cyprinid fish communities in Europe; these fish can survive for over 20 years and exceed 8 kg. Here, their trophic consequences for resident fish communities were tested using cohabitation studies, mainly involving chub Squalius cephalus, a similarly large‐bodied, omnivorous and long‐lived species. These studies were completed over three spatial scales: pond mesocosms, two streams and three lowland rivers, and used stable isotope analysis. Experiments in mesocosms over 100 days revealed rapid formation of dietary specializations and discrete trophic niches in juvenile B. barbus and S. cephalus. This niche partitioning between the species was also apparent in the streams over 2 years. In the lowland rivers, where fish were mature individuals within established populations, this pattern was also generally apparent in fishes of much larger body sizes. Thus, the stocking of these hatchery‐reared fish only incurred minor consequences for the trophic ecology of resident fish, with strong patterns of trophic niche partitioning and diet specialization. Application of these results to decision‐making frameworks should enable managers to make objective decisions on whether cyprinid fish should be stocked into lowland rivers according to ecological risk.
Collapse
Affiliation(s)
- Tea Bašić
- Centre for Conservation Ecology and Environmental Sciences Faculty of Science and Technology Bournemouth University Poole Dorset BH12 5BB U.K
| | - J Robert Britton
- Centre for Conservation Ecology and Environmental Sciences Faculty of Science and Technology Bournemouth University Poole Dorset BH12 5BB U.K
| |
Collapse
|