1
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Custer GF, Bresciani L, Dini-Andreote F. Toward an integrative framework for microbial community coalescence. Trends Microbiol 2024; 32:241-251. [PMID: 37778924 DOI: 10.1016/j.tim.2023.09.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Revised: 09/05/2023] [Accepted: 09/11/2023] [Indexed: 10/03/2023]
Abstract
Community coalescence is defined as the mixing of intact ecological communities. From river confluences to fecal microbiota transplantation, community coalescence constitutes a common ecological occurrence affecting natural and engineered microbial systems. In this opinion article, we propose an integrative framework for microbial community coalescence to guide advances in our understanding of this important - yet underexplored - ecological phenomenon. We start by aligning community coalescence with the unified framework of biological invasion and enumerate commonalities and idiosyncrasies between these two analogous processes. Then, we discuss how organismal interactions and cohesive establishment affect coalescence outcomes with direct implications for community functioning. Last, we propose the use of ecological null modeling to study the interplay of ecological processes structuring community reassembly following coalescence.
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Affiliation(s)
- Gordon F Custer
- Department of Plant Science and Huck Institutes of the Life Sciences, The Pennsylvania State University, University Park, PA, USA; The One Health Microbiome Center, Huck Institutes of the Life Sciences, The Pennsylvania State University, University Park, PA, USA.
| | - Luana Bresciani
- Department of Plant Science and Huck Institutes of the Life Sciences, The Pennsylvania State University, University Park, PA, USA; The One Health Microbiome Center, Huck Institutes of the Life Sciences, The Pennsylvania State University, University Park, PA, USA
| | - Francisco Dini-Andreote
- Department of Plant Science and Huck Institutes of the Life Sciences, The Pennsylvania State University, University Park, PA, USA; The One Health Microbiome Center, Huck Institutes of the Life Sciences, The Pennsylvania State University, University Park, PA, USA.
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2
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Dijoux S, Pichon NA, Sentis A, Boukal DS. Body size and trophic position determine the outcomes of species invasions along temperature and productivity gradients. Ecol Lett 2024; 27:e14310. [PMID: 37811596 DOI: 10.1111/ele.14310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Revised: 08/29/2023] [Accepted: 09/13/2023] [Indexed: 10/10/2023]
Abstract
Species invasions are predicted to increase in frequency with global change, but quantitative predictions of how environmental filters and species traits influence the success and consequences of invasions for local communities are lacking. Here we investigate how invaders alter the structure, diversity and stability regime of simple communities across environmental gradients (habitat productivity, temperature) and community size structure. We simulate all three-species trophic modules (apparent and exploitative competition, trophic chain and intraguild predation). We predict that invasions most often succeed in warm and productive habitats and that successful invaders include smaller competitors, intraguild predators and comparatively small top predators. This suggests that species invasions and global change may facilitate the downsizing of food webs. Furthermore, we show that successful invasions leading to species substitutions rarely alter system stability, while invasions leading to increased diversity can destabilize or stabilize community dynamics depending on the environmental conditions and invader's trophic position.
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Affiliation(s)
- Samuel Dijoux
- Department of Ecosystems Biology, Faculty of Science, University of South Bohemia, České Budějovice, Czech Republic
- Czech Academy of Sciences, Biology Centre, Institute of Entomology, České Budějovice, Czech Republic
| | - Noémie A Pichon
- Ecology and Genetics Unit, Faculty of Science, University of Oulu, Oulu, Finland
- Swiss Federal Research Institute WSL, Birmensdorf, Switzerland
| | - Arnaud Sentis
- INRAE, Aix Marseille University, UMR RECOVER, Aix-en-Provence, France
| | - David S Boukal
- Department of Ecosystems Biology, Faculty of Science, University of South Bohemia, České Budějovice, Czech Republic
- Czech Academy of Sciences, Biology Centre, Institute of Entomology, České Budějovice, Czech Republic
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3
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Lehtonen TK, Gilljam D, Veneranta L, Keskinen T, Bergenius Nord M. The ecology and fishery of the vendace (Coregonus albula) in the Baltic Sea. JOURNAL OF FISH BIOLOGY 2023; 103:1463-1475. [PMID: 37642401 DOI: 10.1111/jfb.15542] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 08/25/2023] [Accepted: 08/26/2023] [Indexed: 08/31/2023]
Abstract
Brackish water ecosystems often have high primary production, intermediate salinities, and fluctuating physical conditions and therefore provide challenging environments for many of their inhabitants. This is especially true of the Baltic Sea, which is a large body of brackish water under strong anthropogenic influence. One freshwater species that is able to cope under these conditions in the northern Baltic Sea is the vendace (Coregonus albula), a small salmonid fish. Here, we review the current knowledge of its ecology and fishery in this brackish water environment. The literature shows that, by competing for resources with other planktivores and being an important prey for a range of larger species, C. albula plays a notable role in the northern Baltic Sea ecosystem. It also sustains significant fisheries in the coastal waters of Sweden and Finland. We identify the need to better understand these C. albula populations in terms of the predator-prey interactions, distributions of anadromous and sea spawning populations and other putative (eco)morphs, extent of gene exchange between the populations, and effects of climate change on their future. In this regard, we recommend strengthening C. albula-related research and management efforts by improved collaboration and coordination between research institutions, other governmental agencies, and fishers, as well as by harmonization of fishery policies across national borders.
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Affiliation(s)
| | - David Gilljam
- Swedish University of Agricultural Sciences, Department of Aquatic Resources, Institute of Coastal Research, Öregrund, Sweden
| | | | | | - Mikaela Bergenius Nord
- Swedish University of Agricultural Sciences, Department of Aquatic Resources, Institute of Marine Research, Lysekil, Sweden
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4
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Britton JR. Contemporary perspectives on the ecological impacts of invasive freshwater fishes. JOURNAL OF FISH BIOLOGY 2023; 103:752-764. [PMID: 36207758 DOI: 10.1111/jfb.15240] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Accepted: 10/05/2022] [Indexed: 06/16/2023]
Abstract
Introductions of non-native freshwater fish continue to increase globally, although only a small proportion of these introductions will result in an invasion. These invasive populations can cause ecological impacts in the receiving ecosystem through processes including increased competition and predation pressure, genetic introgression and the transmission of non-native pathogens. Definitions of ecological impact emphasize that shifts in the strength of these processes are insufficient for characterizing impact alone and, instead, must be associated with a quantifiable decline of biological and/or genetic diversity and lead to a measurable loss of diversity or change in ecosystem functioning. Assessments of ecological impact should thus consider the multiple processes and effects that potentially occur from invasive fish populations where, for example, impacts of invasive common carp Cyprinus carpio populations are through a combination of bottom-up and top-down processes that, in entirety, cause shifts in lake stable states and decreased species richness and/or abundances in the biotic communities. Such far-reaching ecological impacts also align to contemporary definitions of ecosystem collapse, given they involve substantial and persistent declines in biodiversity and ecosystem functions that cannot be recovered unaided. Thus, while not all introduced freshwater fishes will become invasive, those species that do develop invasive populations can cause substantial ecological impacts, where some of the impacts on biodiversity and ecosystem functioning might be sufficiently harmful to be considered as contributing to ecosystem collapse.
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Affiliation(s)
- John Robert Britton
- Department of Life and Environmental Sciences, Faculty of Science and Technology, Bournemouth University, Poole, UK
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5
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Cicala D, Guerra MT, Bardelli R, Di Muri C, Ludovisi A, Vizzini S, Mancinelli G. Isotopic Overlap of Invasive and Native Consumers in the Food Web of Lake Trasimeno (Central Italy). BIOLOGY 2023; 12:1270. [PMID: 37759667 PMCID: PMC10525863 DOI: 10.3390/biology12091270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Revised: 09/11/2023] [Accepted: 09/18/2023] [Indexed: 09/29/2023]
Abstract
An advanced characterization of the trophic niche of non-indigenous species (NIS) may provide useful information on their ecological impact on invaded communities. Here, we used carbon and nitrogen stable isotopes to estimate pairwise niche overlaps between non-indigenous and native consumers in the winter food web of Lake Trasimeno (central Italy). Overall, a relatively low pairwise overlap of isotopic niches was observed between NIS and native species. The only exception was the Louisiana crayfish Procambarus clarkii, which showed a relatively high and diffuse overlap with other native invertebrates. Our findings highlighted a high niche divergence between non-indigenous and native species in Lake Trasimeno, suggesting a potentially low degree of interspecific competition that may facilitate coexistence and, in turn, limit the strength of impacts. The divergent results obtained for the Louisiana crayfish indicate that additional control measures for this invasive species are needed to mitigate its impact on the Lake Trasimeno system.
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Affiliation(s)
- Davide Cicala
- Department of Biology, University of Rome Tor Vergata, Via della Ricerca Scientifica 1, 00133 Rome, Italy;
| | - Maria Teresa Guerra
- Department of Biological and Environmental Sciences and Technologies—DiSTeBA, University of Salento, SP Lecce-Monteroni, 73100 Lecce, Italy;
| | - Roberta Bardelli
- Department of Earth and Marine Sciences—DiSTeM, University of Palermo, Via Archirafi 22, 90133 Palermo, Italy; (R.B.); (S.V.)
| | - Cristina Di Muri
- Italian National Research Council, Institute of Research on Terrestrial Ecosystems—CNR-IRET, University of Salento, SP Lecce-Monteroni, 73100 Lecce, Italy;
| | - Alessandro Ludovisi
- Department of Chemistry, Biology and Biotechnologies, University of Perugia, Via Elce di Sotto 8, 06123 Perugia, Italy;
| | - Salvatrice Vizzini
- Department of Earth and Marine Sciences—DiSTeM, University of Palermo, Via Archirafi 22, 90133 Palermo, Italy; (R.B.); (S.V.)
- Consorzio Nazionale Interuniversitario per le Scienze del Mare—CoNISMa, Piazzale Flaminio 9, 00196 Rome, Italy
| | - Giorgio Mancinelli
- Department of Biological and Environmental Sciences and Technologies—DiSTeBA, University of Salento, SP Lecce-Monteroni, 73100 Lecce, Italy;
- Consorzio Nazionale Interuniversitario per le Scienze del Mare—CoNISMa, Piazzale Flaminio 9, 00196 Rome, Italy
- Italian National Research Council, Institute of Marine Biological Resources and Biotechnologies—CNR-IRBIM, Via Pola 4, 71010 Lesina, Italy
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Li X, Zhang Y, Kong FL, Naz M, Zhou JY, Qi SS, Dai ZC, Du DL. Invasive Plant Alternanthera philoxeroides Benefits More Competition Advantage from Rhizosphere Bacteria Regardless of the Host Source. PLANTS (BASEL, SWITZERLAND) 2023; 12:plants12112085. [PMID: 37299065 DOI: 10.3390/plants12112085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Revised: 05/07/2023] [Accepted: 05/17/2023] [Indexed: 06/12/2023]
Abstract
The rhizosphere plays a vital role in the exchange of materials in the soil-plant ecosystem, and rhizosphere microorganisms are crucial for plant growth and development. In this study, we isolated two strains of Pantoea rhizosphere bacteria separately from invasive Alternanthera philoxeroides and native A. sessilis. We conducted a control experiment to test the effects of these bacteria on the growth and competition of the two plant species using sterile seedlings. Our findings showed that the rhizobacteria strain isolated from A. sessilis significantly promoted the growth of invasive A. philoxeroides in monoculture compared to native A. sessilis. Both strains significantly enhanced the growth and competitiveness of invasive A. philoxeroides under competition conditions, regardless of their host source. Our study suggests that rhizosphere bacteria, including those from different host sources, can contribute to the invasion of A. philoxeroides by significantly enhancing its competitiveness.
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Affiliation(s)
- Xu Li
- School of Emergency Management, Jiangsu University, Zhenjiang 212013, China
- Institute of Environment and Ecology, School of the Environmental and Safety Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Yi Zhang
- Institute of Environment and Ecology, School of the Environmental and Safety Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Fang-Li Kong
- Institute of Environment and Ecology, School of the Environmental and Safety Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Misbah Naz
- Institute of Environment and Ecology, School of the Environmental and Safety Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Jian-Yu Zhou
- Institute of Environment and Ecology, School of the Environmental and Safety Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Shan-Shan Qi
- Key Laboratory of Modern Agricultural Equipment and Technology, Ministry of Education, School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Zhi-Cong Dai
- School of Emergency Management, Jiangsu University, Zhenjiang 212013, China
- Institute of Environment and Ecology, School of the Environmental and Safety Engineering, Jiangsu University, Zhenjiang 212013, China
- Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment, Suzhou University of Science and Technology, Suzhou 215009, China
| | - Dao-Lin Du
- Institute of Environment and Ecology, School of the Environmental and Safety Engineering, Jiangsu University, Zhenjiang 212013, China
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Amundsen PA, Henriksson M, Poste A, Prati S, Power M. Ecological Drivers of Mercury Bioaccumulation in Fish of a Subarctic Watercourse. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2023; 42:873-887. [PMID: 36727562 DOI: 10.1002/etc.5580] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Revised: 11/02/2022] [Accepted: 01/29/2023] [Indexed: 06/18/2023]
Abstract
Mercury (Hg) is a serious concern for aquatic ecosystems because it may biomagnify to harmful concentrations within food webs and consequently end up in humans that eat fish. However, the trophic transfer of mercury through the aquatic food web may be impacted by several factors related to network complexity and the ecology of the species present. The present study addresses the interplay between trophic ecology and mercury contamination in the fish communities of two lakes in a pollution-impacted subarctic watercourse, exploring the role of both horizontal (feeding habitat) and vertical (trophic position) food web characteristics as drivers for the Hg contamination in fish. The lakes are located in the upper and lower parts of the watercourse, with the lower site located closer to, and downstream from, the main pollution source. The lakes have complex fish communities dominated by coregonids (polymorphic whitefish and invasive vendace) and several piscivorous species. Analyses of habitat use, stomach contents, and stable isotope signatures (δ15 N, δ13 C) revealed similar food web structures in the two lakes except for a few differences chiefly related to ecological effects of the invasive vendace. The piscivores had higher Hg concentrations than invertebrate-feeding fish. Concentrations increased with size and age for the piscivores and vendace, whereas habitat differences were of minor importance. Most fish species showed significant differences in Hg concentrations between the lakes, the highest values typically found in the downstream site where the biomagnification rate also was higher. Mercury levels in piscivorous fish included concentrations that exceed health authorization limits, with possible negative implications for fishing and human consumption. Our findings accentuate the importance of acquiring detailed knowledge of the drivers that can magnify Hg concentrations in fish and how these may vary within and among aquatic systems, to provide a scientific basis for adequate management strategies. Environ Toxicol Chem 2023;42:873-887. © 2023 SETAC.
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Affiliation(s)
- Per-Arne Amundsen
- Freshwater Ecology Group, Department of Arctic and Marine Biology, Faculty for Biosciences, Fisheries and Economics, UiT The Arctic University of Norway, Tromsø, Norway
| | - Matilda Henriksson
- Freshwater Ecology Group, Department of Arctic and Marine Biology, Faculty for Biosciences, Fisheries and Economics, UiT The Arctic University of Norway, Tromsø, Norway
| | - Amanda Poste
- Freshwater Ecology Group, Department of Arctic and Marine Biology, Faculty for Biosciences, Fisheries and Economics, UiT The Arctic University of Norway, Tromsø, Norway
- The Norwegian Institute for Water Research, Framsenteret, Tromsø, Norway
| | - Sebastian Prati
- Freshwater Ecology Group, Department of Arctic and Marine Biology, Faculty for Biosciences, Fisheries and Economics, UiT The Arctic University of Norway, Tromsø, Norway
- Department of Aquatic Ecology, University of Duisburg-Essen, Essen, Germany
| | - Michael Power
- Department of Biology, University of Waterloo, Waterloo, Ontario, Canada
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Tian C, Fang L, Li X, Li Y, Song T, Chang J, Liu C, Zhao Y. Non-native fish of the Upper Irtysh and the Ulungur Rivers in China. Biodivers Data J 2023; 11:e97884. [PMID: 38327320 PMCID: PMC10848362 DOI: 10.3897/bdj.11.e97884] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Accepted: 01/12/2023] [Indexed: 01/18/2023] Open
Abstract
Background The Chinese section of the Irtysh River Basin and the Ulungur River Basin, two major river basins of the Altay region, are located at the northwest of Xinjiang Uygur Autonomous Region of China. As an international river, the Chinese section has seven state-level protected fish and seven local-level protected species as well. Many more commercial species have been introduced from eastern China and other countries, accompanied by some low-value and small-sized fish in recent decades. The non-native fish species have already threatened these protected fish. This study investigated the distribution of non-native fish species in the Chinese section of the Irtysh River Basin and the Ulungur River Basin. The basic data for the biodiversity conservation and the information of the non-native fish in these two river basins were gathered. New information There are a lot of studies on native fish in the Chinese section of the Irtysh River Basin and Urungur River Basin in China, but there is a lack of studies on non-native fish. Thirteen non-native fish belonging to four orders, nine families and 12 genera were collected in this study. The study includes one dataset. The dataset presents taxonomy, distribution, water body and location for each of the non-native fish collected from the Chinese section of the Irtysh River Basin and the Ulungur River Basin. Our study has found that the proportion of native species has declined, while the number of non-native species has increased from 2013 to 2022. The information we provided could help to develop an international strategy for the protection of aquatic biodiversity.
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Affiliation(s)
- Chen Tian
- College of life sciences, Hebei University, Baoding, ChinaCollege of life sciences, Hebei UniversityBaodingChina
- Key Laboratory of the Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing, ChinaKey Laboratory of the Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of SciencesBeijingChina
| | - Lei Fang
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, ChinaState Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental SciencesBeijingChina
| | - Xuejian Li
- Key Laboratory of the Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing, ChinaKey Laboratory of the Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of SciencesBeijingChina
- Institute of Shandong River Wetlands, Jinan, ChinaInstitute of Shandong River WetlandsJinanChina
| | - Yonghua Li
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, ChinaState Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental SciencesBeijingChina
| | - Tianjian Song
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, ChinaState Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental SciencesBeijingChina
| | - Jiang Chang
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, ChinaState Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental SciencesBeijingChina
| | - Cunqi Liu
- College of life sciences, Hebei University, Baoding, ChinaCollege of life sciences, Hebei UniversityBaodingChina
| | - Yahui Zhao
- Key Laboratory of the Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing, ChinaKey Laboratory of the Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of SciencesBeijingChina
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9
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Li Q, Xiong Z, Lu B, Pu Y, Li Y, Zhang Y, Duan Y. Trophic niche differentiation between invasive and native frog species in urban wetlands of Kunming, China. Glob Ecol Conserv 2022. [DOI: 10.1016/j.gecco.2022.e02318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
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10
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How Will the Distributions of Native and Invasive Species Be Affected by Climate Change? Insights from Giant South American Land Snails. DIVERSITY 2022. [DOI: 10.3390/d14060467] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Climate change and invasive species are critical factors affecting native land snail diversity. In South America, the introduced Giant African Snail (Lissachatina fulica) has spread significantly in recent decades into the habitat of the threatened native giant snails of the genus Megalobulimus. We applied species distribution modeling (SDM), using the maximum entropy method (Maxent) and environmental niche analysis, to understand the ecological relationships between these species in a climate change scenario. We compiled a dataset of occurrences of L. fulica and 10 Megalobulimus species in South America and predicted the distribution of the species in current and future scenarios (2040–2060). We found that L. fulica has a broader environmental niche and potential distribution than the South American Megalobulimus species. The distribution of six Megalobulimus species will have their suitable areas decreased, whereas the distribution of the invasive species L. fulica will not change significantly in the near future. A correlation between the spread of L. fulica and the decline of native Megalobulimus species in South America was found due to habitat alteration from climate change, but this relationship does not seem to be related to a robust competitive interaction between the invasive and native species.
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11
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Trophic reorganization of native planktivorous fishes at different density extremes of bigheaded carps in the Illinois and Mississippi rivers, USA. Biol Invasions 2022. [DOI: 10.1007/s10530-022-02822-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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12
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Wejnerowski Ł, Aykut TO, Pełechata A, Rybak M, Dulić T, Meriluoto J, Dziuba MK. Plankton hitch-hikers on naturalists’ instruments as silent intruders of aquatic ecosystems: current risks and possible prevention. NEOBIOTA 2022. [DOI: 10.3897/neobiota.73.82636] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Organism dispersal is nowadays highly driven by human vectors. This also refers to the aquatic organisms that can often silently spread in and invade new waters, especially when human vectors of dispersal act without brakes. Thus, it is mandatory to continuously identify human-mediated mechanisms of organism dispersal and implement proper biosecurity treatments. In this study, we demonstrate how the plankton net – one of the basic instruments in the equipment of every plankton sampling person is a good vector for plankton dispersal and invasions. We also demonstrate whether keeping the net in an ethanol solution after sampling is a proper biosecurity treatment, and what kind of treatments are implemented by people worldwide. The first simulation shows that bloom-forming cyanobacteria can easily infiltrate into the new environment thanks to the nets, and can prosper there. However, ethanol-based biosecurity treatment efficiently prevented their spread and proliferation in the new environment. The second simulation, based on wild plankton from an eutrophic lake, indicates that a plethora of phyto- and zooplankton taxa can infiltrate into the new waterbody through the net and sustain themselves there if the net is only flushed in the waterbody and left to dry after sampling (an approach that is commonly used by naturalists). Here, we also show that native plankton residents strongly shape the fate of hitch-hikers, but some of them like cyanobacteria can successfully compete with residents. Survey data alert us to the fact that the vast majority of biologists use either ineffective or questionable biosecurity treatments and only less than a tenth of samplers implement treatments based on disinfectant liquids. Our results emphasize that the lack of proper biosecurity methods implemented by the biologists facilitates the spread and invasions of plankton including also invasive species of a great nuisance to native ecosystems. Considering that naturalists usually use different instruments that might also be good vectors of plankton dispersal, it is necessary to develop proper uniform biosecurity treatments. No longer facilitating the plankton spread through hydrobiological instruments is the milestone that we, plankton samplers worldwide, should achieve together in the nearest future if we want to continue our desire to explore, understand, protect and save nature.
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Sainz-Escudero L, Karen López-Estrada E, Rodríguez-Flores PC, García-París M. Brine shrimps adrift: historical species turnover in Western Mediterranean Artemia (Anostraca). Biol Invasions 2022. [DOI: 10.1007/s10530-022-02779-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
AbstractBrine shrimps (Artemia) have undergone geographic range and demographic expansions as a result of their interaction with humans since the beginning of salt harvesting. This interaction has favoured the expansion of some species but compromising the survival of others. Mediterranean native populations of Artemia salina from coastal salterns and lagoons are facing the presence and expansion of the introduced and invasive American species Artemia monica (= A. franciscana). However, this species could not be the only threat. Parthenogenetic populations of the Asian species A. urmiana and A. sinica are widespread along the Mediterranean and other areas of the world. In this work, with the use of large cox1 and mitogenomic datasets, phylogenetic and phylogeographic inferences, and a time calibrated tree, we confirmed the Asian origin and recent arrival of the current Western Mediterranean parthenogenetic populations of Artemia. In addition, the replacement of Iberian populations of A. salina by Asiatic parthenogenetic populations lead us to recognize parthenogens as invasive. Current salterns development and commercial importance of Artemia make human-mediated introduction probable. These results demonstrate again the impact that changing human interests have on population expansion or decline of species adapted to anthropogenic habitats. Artemia salina decline makes urgent the implementation of conservation measures such as its use in fish farming and salt production or its inoculation in inland salterns.
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14
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Lai S, Warret Rodrigues C, Gallant D, Roth JD, Berteaux D. Red foxes at their northern edge: competition with the Arctic fox and winter movements. J Mammal 2022. [DOI: 10.1093/jmammal/gyab164] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Abstract
Rapid range expansion of boreal forest predators onto the tundra may disrupt local ecological processes, notably through competition with ecologically similar species. Red foxes (Vulpes vulpes) have expanded their range northwards throughout the Canadian Arctic, inducing competition with endemic Arctic foxes (V. lagopus). We studied competition between Arctic and red foxes, with a focus on interference competition, and winter movements of red foxes using satellite telemetry and den occupancy data from both species. We worked at Bylot Island (Nunavut) and Herschel Island (northern Yukon), two sites at the northern limit of the red fox’s range. As expected, red fox home ranges were 56% larger on average than Arctic fox home ranges. However, red foxes did not exclude Arctic foxes regionally nor did they prevent them from breeding successfully in their vicinity. On Bylot Island, Arctic foxes did not spatially avoid red foxes more than their conspecifics, as evidenced by similar intra- and interspecific home-range overlaps. On Herschel Island, the red fox pair’s home range extensively overlapped the home range of their Arctic fox neighbors. While red foxes tracked on Bylot Island survived several winters without expanding or leaving their home ranges, those on Herschel Island moved onto the sea ice and died. Overall, our results demonstrate low levels of interference competition between the two species in the High Canadian Arctic. When red fox density is low, as in our study areas where land protection prevents predator subsidization by anthropogenic food sources, Arctic and red foxes may be able to co-exist with limited antagonistic interactions. Our sample sizes were limited by the naturally low density of red foxes at their northernmost edge. Replication therefore is needed to fully understand winter space use and intraguild interactions in this species at its northern range limit.
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Affiliation(s)
- Sandra Lai
- Canada Research Chair on Northern Biodiversity, Centre for Northern Studies and Quebec Center for Biodiversity Science, Université du Québec à Rimouski, 300 Allée des Ursulines, Rimouski, Quebec, Canada
| | - Chloé Warret Rodrigues
- Department of Biological Sciences, University of Manitoba, 50 Sifton Road, Winnipeg, Manitoba, Canada
| | - Daniel Gallant
- Northern New Brunswick Field Unit, Parks Canada, 186 Route 117, Kouchibouguac, New Brunswick, Canada
| | - James D Roth
- Department of Biological Sciences, University of Manitoba, 50 Sifton Road, Winnipeg, Manitoba, Canada
| | - Dominique Berteaux
- Canada Research Chair on Northern Biodiversity, Centre for Northern Studies and Quebec Center for Biodiversity Science, Université du Québec à Rimouski, 300 Allée des Ursulines, Rimouski, Quebec, Canada
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15
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The Discontinuous Elevational Distribution of an Ungulate at the Regional Scale: Implications for Speciation and Conservation. Animals (Basel) 2021; 11:ani11123565. [PMID: 34944340 PMCID: PMC8697900 DOI: 10.3390/ani11123565] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Revised: 12/03/2021] [Accepted: 12/11/2021] [Indexed: 11/17/2022] Open
Abstract
Simple Summary The Himalaya blue sheep (Pseudois nayaur) in Baima Snow Mountain is found to exhibit a distinctive bimodal distribution along elevation gradient contrasting the unimodal distributions of most species. The first distributional peak of Himalaya blue sheep was in scree habitat around 4100 m a.s.l., while the second peak was in the dry-hot valley around 2600 m. Geographic separation from the original population along elevation suggested that population at lower elevation could be a separate species ecologically, or a taxa ongoing differentiation. Invasive species Opuntia ficus-indica, which colonized the region six hundred years ago, may have formed new foraging niche to support population at lower elevation. Our results suggested conservation measures should pay attention to taxa ongoing differentiation, and consider the possible active effect of biological invasion. Abstract The elevational range where montane species live is a key factor of spatial niche partitioning, because the limits of such ranges are influenced by interspecies interaction, abiotic stress, and dispersal barriers. At the regional scale, unimodal distributions of single species along the elevation gradient have often been reported, while discontinuous patterns, such as bimodal distributions, and potential ecological implications have been rarely discussed. Here, we used extensive camera trap records to reveal the elevation distribution of Himalaya blue sheep (Pseudois nayaur) and its co-existence with other ground animal communities along a slope of Baima Snow Mountain, southwest China. The results show that Himalaya blue sheep exhibited a distinctive bimodal distribution along the elevation gradient contrasting the unimodal distributions found for the other ungulates in Baima snow mountain. A first distributional peak was represented by a population habituating in scree habitat around 4100 m, and a second peak was found in the dry-hot valley around 2600 m. The two distinct populations co-existed with disparate animal communities and these assemblages were similar both in the dry and rainy seasons. The extremely low abundance of blue sheep observed in the densely forested belt at mid-elevation indicates that vegetation rather than temperature is responsible for such segregation. The low-elevation population relied highly on Opuntia ficus-indica, an invasive cactus species that colonized the region six hundred years ago, as food resource. Being the only animal that developed a strategy to feed on this spiky plant, we suggest invasive species may have formed new foraging niche to support blue sheep population in lower elevation hot-dry river valleys, resulting in the geographic separation from the original population and a potential morphological differentiation, as recorded. These findings emphasize the important conservation values of role of ecological functions to identify different taxa, and conservation values of apparent similar species of different ecological functions.
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Barrios-Leal DY, Menezes RST, Ribeiro JV, Bizzo L, Melo de Sene F, Neves-da-Rocha J, Manfrin MH. A holocenic and dynamic hybrid zone between two cactophilic Drosophila species in a coastal lowland plain of the Brazilian Atlantic Forest. J Evol Biol 2021; 34:1737-1751. [PMID: 34538008 DOI: 10.1111/jeb.13934] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Revised: 08/31/2021] [Accepted: 09/06/2021] [Indexed: 11/30/2022]
Abstract
Hybridization and introgression are processes that contribute to shaping biological diversity. The factors promoting the formation of these processes are multiples but poorly explored in a biogeographical and ecological context. In the southeast coastal plain of the Brazilian Atlantic Forest, a hybrid zone was described between two closely related cactophilic species, Drosophila antonietae and D. serido. Here, we revisited and analysed specimens from this hybrid zone to evaluate its temporal and spatial dynamic. We examined allopatric and sympatric populations of the flies using independent sources of data such as mitochondrial and nuclear sequences, microsatellite loci, morphometrics of wings and male genitalia, and climatic niche models. We also verified the emergence of the flies from necrotic tissues of collected cacti to verify the role of host association for the population dynamics. Our results support the existence of a hybrid zone due to secondary contact and limited to the localities where the two species are currently in contact. Furthermore, we detected asymmetric bidirectional introgression and the maintenance of the species integrity, ecological association and morphological characters, suggesting selection and limited introgression. Considering our paleomodels, probably this hybrid zone is recent and the contact occurred during the Holocene to the present day, favoured by range expansion of their populations due to expansion of open and dry areas in eastern South America during palaeoclimatic and geomorphological events.
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Affiliation(s)
- Dora Yovana Barrios-Leal
- Pós-Graduação, Departamento de Genética, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, Brazil
| | - Rodolpho S T Menezes
- Departamento de Ciências Biológicas, Universidade Estadual de Santa Cruz, Ilhéus, Bahia, Brazil
| | - João Victor Ribeiro
- Departamento de Ciências Biológicas, Universidade Estadual de Santa Cruz, Ilhéus, Bahia, Brazil
| | - Luiz Bizzo
- UNIVALI - Universidade do Vale do Itajaí, Itajaí, Santa Catarina, Brazil.,Centro Universitário - Católica de Santa Catarina, Jaraguá do Sul, Santa Catarina, Brazil
| | - Fabio Melo de Sene
- Pós-Graduação, Departamento de Genética, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, Brazil.,Departamento de Ciências Biológicas, Universidade Estadual de Santa Cruz, Ilhéus, Bahia, Brazil
| | - João Neves-da-Rocha
- Departamento de Ciências Biológicas, Universidade Estadual de Santa Cruz, Ilhéus, Bahia, Brazil
| | - Maura Helena Manfrin
- Pós-Graduação, Departamento de Genética, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, Brazil.,Departamento de Ciências Biológicas, Universidade Estadual de Santa Cruz, Ilhéus, Bahia, Brazil
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17
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Song C, Uricchio LH, Mordecai EA, Saavedra S. Understanding the emergence of contingent and deterministic exclusion in multispecies communities. Ecol Lett 2021; 24:2155-2168. [PMID: 34288350 DOI: 10.1111/ele.13846] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 04/21/2021] [Accepted: 06/23/2021] [Indexed: 12/11/2022]
Abstract
Competitive exclusion can be classified as deterministic or as historically contingent. While competitive exclusion is common in nature, it has remained unclear when multispecies communities formed by more than two species should be dominated by deterministic or contingent exclusion. Here, we take a fully parameterised model of an empirical competitive system between invasive annual and native perennial plant species to explain both the emergence and sources of competitive exclusion in multispecies communities. Using a structural approach to understand the range of parameters promoting deterministic and contingent exclusions, we then find heuristic theoretical support for the following three general conclusions. First, we find that the life-history of perennial species increases the probability of observing contingent exclusion by increasing their effective intrinsic growth rates. Second, we find that the probability of observing contingent exclusion increases with weaker intraspecific competition, and not with the level of hierarchical competition. Third, we find a shift from contingent exclusion to deterministic exclusion with increasing numbers of competing species. Our work provides a heuristic framework to increase our understanding about the predictability of species persistence within multispecies communities.
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Affiliation(s)
- Chuliang Song
- Department of Civil and Environmental Engineering, MIT, Cambridge, MA, USA.,Department of Biology, McGill University, Montreal, Canada.,Department of Ecology and Evolutionary Biology, University of Toronto, Toronto, ON, Canada
| | - Lawrence H Uricchio
- Department of Integrative Biology, University of California, Berkeley, Berkeley, CA, USA
| | | | - Serguei Saavedra
- Department of Civil and Environmental Engineering, MIT, Cambridge, MA, USA
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18
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Prati S, Henriksen EH, Smalås A, Knudsen R, Klemetsen A, Sánchez-Hernández J, Amundsen PA. The effect of inter‐ and intraspecific competition on individual and population niche widths: a four‐decade study on two interacting salmonids. OIKOS 2021. [DOI: 10.1111/oik.08375] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Sebastian Prati
- Dept of Arctic and Marine Biology, Faculty of Biosciences, Fisheries and Economics, UiT The Arctic Univ. of Norway Tromsø Norway
| | - Eirik Haugstvedt Henriksen
- Dept of Arctic and Marine Biology, Faculty of Biosciences, Fisheries and Economics, UiT The Arctic Univ. of Norway Tromsø Norway
| | - Aslak Smalås
- Dept of Arctic and Marine Biology, Faculty of Biosciences, Fisheries and Economics, UiT The Arctic Univ. of Norway Tromsø Norway
| | - Rune Knudsen
- Dept of Arctic and Marine Biology, Faculty of Biosciences, Fisheries and Economics, UiT The Arctic Univ. of Norway Tromsø Norway
| | - Anders Klemetsen
- Dept of Arctic and Marine Biology, Faculty of Biosciences, Fisheries and Economics, UiT The Arctic Univ. of Norway Tromsø Norway
| | - Javier Sánchez-Hernández
- Depto de Biología, Geología, Física y Química Inorgánica, Univ. Rey Juan Carlos, Móstoles Madrid Spain
| | - Per-Arne Amundsen
- Dept of Arctic and Marine Biology, Faculty of Biosciences, Fisheries and Economics, UiT The Arctic Univ. of Norway Tromsø Norway
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Ebrahimi S, Nonacs P. Genetic diversity through social heterosis can increase virulence in RNA viral infections and cancer progression. ROYAL SOCIETY OPEN SCIENCE 2021; 8:202219. [PMID: 34035948 PMCID: PMC8097216 DOI: 10.1098/rsos.202219] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Accepted: 04/12/2021] [Indexed: 05/04/2023]
Abstract
In viral infections and cancer tumours, negative health outcomes often correlate with increasing genetic diversity. Possible evolutionary processes for such relationships include mutant lineages escaping host control or diversity, per se, creating too many immune system targets. Another possibility is social heterosis where mutations and replicative errors create clonal lineages varying in intrinsic capability for successful dispersal; improved environmental buffering; resource extraction or effective defence against immune systems. Rather than these capabilities existing in one genome, social heterosis proposes complementary synergies occur across lineages in close proximity. Diverse groups overcome host defences as interacting 'social genomes' with group genetic tool kits exceeding limited individual plasticity. To assess the possibility of social heterosis in viral infections and cancer progression, we conducted extensive literature searches for examples consistent with general and specific predictions from the social heterosis hypothesis. Numerous studies found supportive patterns in cancers across multiple tissues and in several families of RNA viruses. In viruses, social heterosis mechanisms probably result from long coevolutionary histories of competition between pathogen and host. Conversely, in cancers, social heterosis is a by-product of recent mutations. Investigating how social genomes arise and function in viral quasi-species swarms and cancer tumours may lead to new therapeutic approaches.
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Affiliation(s)
- Saba Ebrahimi
- Department of Ecology and Evolutionary Biology, University of California, 621 Young Drive South, Los Angeles, CA 90024, USA
| | - Peter Nonacs
- Department of Ecology and Evolutionary Biology, University of California, 621 Young Drive South, Los Angeles, CA 90024, USA
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20
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Jochum M, Ferlian O, Thakur MP, Ciobanu M, Klarner B, Salamon J, Frelich LE, Johnson EA, Eisenhauer N. Earthworm invasion causes declines across soil fauna size classes and biodiversity facets in northern North American forests. OIKOS 2021. [DOI: 10.1111/oik.07867] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Malte Jochum
- German Centre for Integrative Biodiversity Research (iDiv), Halle‐Jena‐Leipzig Leipzig Germany
- Leipzig Univ., Inst. of Biology Leipzig Germany
| | - Olga Ferlian
- German Centre for Integrative Biodiversity Research (iDiv), Halle‐Jena‐Leipzig Leipzig Germany
- Leipzig Univ., Inst. of Biology Leipzig Germany
| | - Madhav P. Thakur
- Inst. of Ecology, Evolution and Behaviour, Univ. of Bern Bern Switzerland
| | - Marcel Ciobanu
- Inst. of Biological Research, Branch of the National Inst. of Research and Development for Biological Sciences Cluj‐Napoca Romania
| | - Bernhard Klarner
- J.F. Blumenbach Inst. of Zoology and Anthropology, Animal Ecology, Univ. of Goettingen Goettingen Germany
| | - Jörg‐Alfred Salamon
- Inst. of Ecology and Evolution & Field Station Schapen, Univ. of Veterinary Medicine Hannover Hannover Germany
| | - Lee E. Frelich
- Center for Forest Ecology, Dept of Forest Resources, Univ. of Minnesota St. Paul MN USA
| | | | - Nico Eisenhauer
- German Centre for Integrative Biodiversity Research (iDiv), Halle‐Jena‐Leipzig Leipzig Germany
- Leipzig Univ., Inst. of Biology Leipzig Germany
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21
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Zhu L, Zhang Z, Chen H, Lamer JT, Wang J, Wei W, Fu L, Tang M, Wang C, Lu G. Gut microbiomes of bigheaded carps and hybrids provide insights into invasion: A hologenome perspective. Evol Appl 2021; 14:735-745. [PMID: 33767748 PMCID: PMC7980309 DOI: 10.1111/eva.13152] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Revised: 10/13/2020] [Accepted: 10/14/2020] [Indexed: 12/12/2022] Open
Abstract
Gut microbiomes play an essential role in host survival and local adaptation and thus can facilitate the invasion of host species. Biological invasions have been shown to be linked to the genetic properties of alien host species. It is thus plausible that the holobiont, the host, and its associated microbiome act as an entity to drive invasion success. The bighead carp and silver carp (bigheaded carps), invasive species that exhibit extensive hybridization in the Mississippi River Basin (MRB), provided a unique model to test the holobiont hypothesis of invasion. Here, we investigated the microbiomes of foreguts and hindguts in bigheaded carps and their reciprocal hybrids reared in aquaculture ponds using 16S amplicons and the associated gene prediction. We found an admixed pattern in the gut microbiome community in bigheaded carp hybrids. The hybrid gut microbiomes showed special characteristics such as relatively high alpha diversity in the foregut, an increasing dissimilarity between foreguts and hindguts, and a remarkable proportion of genes coding for putative enzymes related to their digestion of main food resources (Cyanobacteria, cellulose, and chitin). The pond-reared hybrids had advantageous features in genes coding for putative enzymes related to their diet. The above results collectively suggested that the gut microbiomes of hybrids could be beneficial to their local adaptation (e.g., food resource utilization), which might have facilitated their invasion in the MRB. The gut microbial findings, along with the intrinsic genomic features likely associated with life-history traits revealed in our recent study, provide preliminary evidence supporting the holobiont hypothesis of invasion.
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Affiliation(s)
- Lifeng Zhu
- College of Life SciencesNanjing Normal UniversityNanjingChina
| | - Zheng Zhang
- College of Life SciencesNanjing Normal UniversityNanjingChina
| | - Hua Chen
- Mingke Biotechnology CenterHangzhouChina
| | - James T. Lamer
- Department of Biological SciencesWestern Illinois UniversityMacombILUSA
| | - Jun Wang
- Key Laboratory of Freshwater Fisheries Germplasm ResourcesMinistry of Agriculture and Rural Affair/National Demonstration Center for Experimental Fisheries ScienceEducation/Shanghai Engineering Research Center of AquacultureShanghai Ocean UniversityShanghaiChina
| | - Wenzhi Wei
- College of Animal Science and TechnologyYangzhou UniversityYangzhouChina
| | - Lixia Fu
- College of Animal Science and TechnologyYangzhou UniversityYangzhouChina
| | - Minghu Tang
- Yangzhou Hanjiang National Carp Seed FarmYangzhouChina
| | - Chenghui Wang
- Key Laboratory of Freshwater Fisheries Germplasm ResourcesMinistry of Agriculture and Rural Affair/National Demonstration Center for Experimental Fisheries ScienceEducation/Shanghai Engineering Research Center of AquacultureShanghai Ocean UniversityShanghaiChina
| | - Guoqing Lu
- Department of BiologyUniversity of Nebraska at OmahaOmahaNEUSA
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22
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Pfauserová N, Slavík O, Horký P, Turek J, Randák T. Spatial distribution of native fish species in tributaries is altered by the dispersal of non-native species from reservoirs. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 755:143108. [PMID: 33162133 DOI: 10.1016/j.scitotenv.2020.143108] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2020] [Revised: 09/27/2020] [Accepted: 10/12/2020] [Indexed: 06/11/2023]
Abstract
Reservoirs are known to alter temperature and flow regimes, shift nutrient cycles, reduce downstream species diversity and enable a predominantly upstream spread of non-native species. However, information about the seasonal dynamics of the spread of non-natives from a reservoir to its tributaries and the further consequences regarding the spatial distribution of native species is rare. We observed the occurrence of fish in the Vltava River and its tributaries (Elbe catchment area, central Europe) upstream of the Lipno Reservoir for five consecutive years. We radio-tagged two non-native and four native species. To detect assemblage spatial variability, we sampled sites in the study area by electrofishing twice per year (spring and autumn). We expected seasonal trends in non-native species appearance in upstream reservoir tributaries and, conversely, low motivation of native fishes to descend to the reservoir. By analysing nearly 3000 individuals of 21 species from the longitudinal profile of the study area, we observed an effect of reservoir distance on the native species ratio in the upper Vltava catchment area, i.e., an increase in distance increased the native species proportion, and the opposite was observed for non-native species. Analyses of 3798 tracking positions of 193 tagged individuals showed massive spring dispersal of non-native species from the reservoir to the main tributary, the Vltava River, and their return to the reservoir for wintering. Their upstream movement positively correlated with an increase in flow rate. Native Salmo trutta showed a specific shift from the Vltava River to smaller streams during the summer, when the presence of non-native species in the Vltava River was most significant. These findings indicate that non-native species repeatedly spread from the reservoir to the upstream river stretch and its tributaries and potentially compete with native species for resources.
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Affiliation(s)
- Nikola Pfauserová
- Department of Zoology and Fisheries, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Czech Republic.
| | - Ondřej Slavík
- Department of Zoology and Fisheries, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Czech Republic
| | - Pavel Horký
- Department of Zoology and Fisheries, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Czech Republic
| | - Jan Turek
- Center of Aquaculture and Biodiversity of Hydrocenoses, Faculty of Fisheries and Protection of Waters, University of South Bohemia in České Budějovice, Czech Republic
| | - Tomáš Randák
- Center of Aquaculture and Biodiversity of Hydrocenoses, Faculty of Fisheries and Protection of Waters, University of South Bohemia in České Budějovice, Czech Republic
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23
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Albano PG, Steger J, Bošnjak M, Dunne B, Guifarro Z, Turapova E, Hua Q, Kaufman DS, Rilov G, Zuschin M. Native biodiversity collapse in the eastern Mediterranean. Proc Biol Sci 2021; 288:20202469. [PMID: 33402072 PMCID: PMC7892420 DOI: 10.1098/rspb.2020.2469] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Accepted: 12/07/2020] [Indexed: 12/11/2022] Open
Abstract
Global warming causes the poleward shift of the trailing edges of marine ectotherm species distributions. In the semi-enclosed Mediterranean Sea, continental masses and oceanographic barriers do not allow natural connectivity with thermophilic species pools: as trailing edges retreat, a net diversity loss occurs. We quantify this loss on the Israeli shelf, among the warmest areas in the Mediterranean, by comparing current native molluscan richness with the historical one obtained from surficial death assemblages. We recorded only 12% and 5% of historically present native species on shallow subtidal soft and hard substrates, respectively. This is the largest climate-driven regional-scale diversity loss in the oceans documented to date. By contrast, assemblages in the intertidal, more tolerant to climatic extremes, and in the cooler mesophotic zone show approximately 50% of the historical native richness. Importantly, approximately 60% of the recorded shallow subtidal native species do not reach reproductive size, making the shallow shelf a demographic sink. We predict that, as climate warms, this native biodiversity collapse will intensify and expand geographically, counteracted only by Indo-Pacific species entering from the Suez Canal. These assemblages, shaped by climate warming and biological invasions, give rise to a 'novel ecosystem' whose restoration to historical baselines is not achievable.
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Affiliation(s)
- Paolo G. Albano
- Department of Palaeontology, University of Vienna, Althanstrasse 14, 1090 Vienna, Austria
| | - Jan Steger
- Department of Palaeontology, University of Vienna, Althanstrasse 14, 1090 Vienna, Austria
| | - Marija Bošnjak
- Department of Palaeontology, University of Vienna, Althanstrasse 14, 1090 Vienna, Austria
- Croatian Natural History Museum, Demetrova 1, Zagreb, Croatia
| | - Beata Dunne
- Department of Palaeontology, University of Vienna, Althanstrasse 14, 1090 Vienna, Austria
| | - Zara Guifarro
- Department of Palaeontology, University of Vienna, Althanstrasse 14, 1090 Vienna, Austria
| | - Elina Turapova
- Department of Palaeontology, University of Vienna, Althanstrasse 14, 1090 Vienna, Austria
| | - Quan Hua
- Australian Nuclear Science and Technology Organisation, Kirrawee DC, New South Wales 2232, Australia
| | - Darrell S. Kaufman
- School of Earth and Sustainability, Northern Arizona University, Flagstaff, AZ 86011, USA
| | - Gil Rilov
- National Institute of Oceanography, Israel Oceanographic and Limnological Research (IOLR), Haifa 3108001, Israel
| | - Martin Zuschin
- Department of Palaeontology, University of Vienna, Althanstrasse 14, 1090 Vienna, Austria
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Souza CPD, Rodrigues-Filho CADS, Barbosa FAR, Leitão RP. Drastic reduction of the functional diversity of native ichthyofauna in a Neotropical lake following invasion by piscivorous fishes. NEOTROPICAL ICHTHYOLOGY 2021. [DOI: 10.1590/1982-0224-2021-0033] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Abstract Biological invasions are leading several species to extinction and are projected as a main driver of biodiversity changes in lakes for this century. However, the knowledge of their impacts on the Neotropical ichthyofauna over time remains largely incipient, especially when considering the functional diversity of native communities. Here we aim to identify the effects of non-native species, especially the non-native piscivorous Cichla kelberi and Pygocentrus nattereri, on the functional diversity of the native ichthyofauna of the Carioca Lake, Middle Rio Doce basin, state of Minas Gerais. Using fish occurrence data for eight years from 1983 to 2010 combined with an ecomorphological-trait analysis, we found that while the native species richness dropped to 56%, the functional richness is only 27% of that found before introductions. In other words, more than species, the ichthyofauna suffered an impressive decline in the range of functional traits, which can further have severe impacts on ecological processes within that system. When considering all the components of the current ichthyofauna (native and non-native species), neither taxonomic nor functional richness have changed over time. However, even keeping biodiversity levels, non-native species are not able to fully compensate for the extinct native ones in terms of functions.
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Affiliation(s)
- Carla Patrícia de Souza
- Universidade Federal de Minas Gerais (UFMG), Brazil; Universidade Federal de Minas Gerais, Brazil
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Rodrigues AC, Santos NCLD, Baumgartner MT, Gomes LC. Adjustments in population and reproductive dynamics of native and non-native congeneric species during 26 years after invasion. NEOTROPICAL ICHTHYOLOGY 2021. [DOI: 10.1590/1982-0224-2020-0033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
ABSTRACT We aimed to improve the understanding of the establishment of Serrasalmus marginatus (non-native), which was followed by a decrease in the abundance of Serrasalmus maculatus (native) in the upper Paraná River floodplain. We estimated age, mortality rate, length and age at first maturity and variations in gonad development in three time-periods along a 26-year truncated time scale for both species. Population and reproduction parameters of both species showed substantial fluctuations among periods. Most age classes were sampled in all time-periods, but with considerable difference in abundance, with predominance of older individuals in the second time-period and younger individuals in the third time-period for both species. The mortality rates decreased for both species in the second time-period, but increased for the native in the third time-period. Length and age at first maturity decreased in the second time-period for both species, increasing the number of mature individuals on their populations. In the third time-period, the number of immature individuals increased for both species. We suggest that species experienced stressful conditions during cooccurrence and this have resulted in physiological responses in both species, reflecting in population and reproductive adjustments that may have relaxed competitive interactions between them, optimizing survival, reproductive effort and coexistence.
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High Trophic Niche Overlap between a Native and Invasive Mink Does Not Drive Trophic Displacement of the Native Mink during an Invasion Process. Animals (Basel) 2020; 10:ani10081387. [PMID: 32785203 PMCID: PMC7460352 DOI: 10.3390/ani10081387] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Revised: 08/03/2020] [Accepted: 08/06/2020] [Indexed: 11/23/2022] Open
Abstract
Simple Summary Invasive species are widely recognized to negatively affect native species through both direct and indirect interactions. When diet overlap between the native and invasive species increases, their competitive interaction is expected to increase too. This in turn may lead to displacement of one of the species. However, the specific mechanisms of the diet displacement are still unclear. In this study, we analysed the diet and diet overlap between the critically endangered European mink and the invasive American mink during the invasion process of the latter species by means of stable isotope analyses. We found a significant diet overlap between the native and invasive mink when they co-occur, an important individual variation of diet, and no significant change of diet of the native species in response to the arrival of the invasive mink. These results suggest significant competitive pressure imposed on the native European mink by the invasive American mink. As such, urgent implementation of control measures of invasive species is needed to ensure the viability and conservation of endangered European mink populations. Abstract The pressure elicited by invasive species on native species significantly increases with the increase of the overlap of their ecological niches. Still, the specific mechanisms of the trophic displacement of native species during the invasion process are unclear. The effects of the invasive American mink (Neovison vison) on the critically endangered European mink (Mustela lutreola) was assessed by analyses of diet and niche overlap during the invasion process. To do this, the isotopic composition (δ13C and δ15N) of both species of mink and their four main types of prey was analysed. Significant trophic overlap between the native European mink and invasive American mink was found when they coexisted in sympatry. Furthermore, both mink species were characterised by significant individual variation in diet and no obvious change in diet of the native species in response to the arrival of the introduced species was observed. High niche overlap registered between both species in sympatry with no displacement in diet of the native mink in response to the arrival of the invasive mink is expected to have important consequences for the viability and conservation of the native mink populations, as it suggests high competitive pressure.
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27
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The effect of random dispersal on competitive exclusion – A review. Math Biosci 2019; 318:108271. [DOI: 10.1016/j.mbs.2019.108271] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Revised: 10/11/2019] [Accepted: 10/11/2019] [Indexed: 12/11/2022]
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Multifaceted implications of the competition between native and invasive crayfish: a glimmer of hope for the native’s long-term survival. Biol Invasions 2019. [DOI: 10.1007/s10530-019-02136-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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29
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Trophic shifts in a native predator following the introduction of a top predator in a tropical lake. Biol Invasions 2019. [DOI: 10.1007/s10530-019-02119-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Burbank J, Finch M, Drake DAR, Power M. Diet and isotopic niche of eastern sand darter (Ammocrypta pellucida) near the northern edge of its range: a test of niche specificity. CAN J ZOOL 2019. [DOI: 10.1139/cjz-2018-0291] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Niche specificity can predispose species to population declines during periods of resource limitation, yet trophic niche specificity is poorly known for many small-bodied freshwater fishes. Applying a two-tiered approach involving stomach content and stable isotope analyses, we examined the diet and trophic niche of the threatened eastern sand darter (Ammocrypta pellucida (Putnam, 1863)) and co-occurring fishes in the Thames River, Ontario, Canada. As with previous studies, stomach content analysis revealed that eastern sand darter consumed a variety of benthic organisms including Chironomidae, Cladocera, Ostracoda, Oligochaeta, and Ephemeroptera; however, proportional contributions of prey groups differed based on stable isotope analysis, highlighting the potential for seasonal variation in prey consumption. Despite evidence of a generalist strategy, stable isotope analysis indicated eastern sand darter exhibited a relatively narrow trophic niche relative to co-occurring fishes. Trophic niche overlap was relatively minor between eastern sand darter and drift-feeding fishes (spotfin shiner (Cyprinella spiloptera (Cope, 1867)), emerald shiner (Notropis atherinoides Rafinesque, 1818), and buffalo sp. (genus Ictiobus Rafinesque, 1820)), but was more evident between eastern sand darter and benthic and benthopelagic fishes (johnny darter (Etheostoma nigrum Rafinesque, 1820) and blackside darter (Percina maculata (Girard, 1859))), indicating that competition with these species may be more likely during periods of prey scarcity.
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Affiliation(s)
- Jacob Burbank
- Department of Biology, University of Waterloo, 200 University Avenue West, Waterloo, ON N2L 3G1, Canada
- Great Lakes Laboratory for Fisheries and Aquatic Sciences, Fisheries and Oceans Canada, Burlington, ON L7S 1A1, Canada
| | - Mary Finch
- Department of Communities, Land and Environment, Government of Prince Edward Island, Charlottetown, PE C1A 7N8, Canada
| | - D. Andrew R. Drake
- Great Lakes Laboratory for Fisheries and Aquatic Sciences, Fisheries and Oceans Canada, Burlington, ON L7S 1A1, Canada
| | - Michael Power
- Department of Biology, University of Waterloo, 200 University Avenue West, Waterloo, ON N2L 3G1, Canada
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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
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Morrissey-McCaffrey E, Shephard S, Kelly FL, Kelly-Quinn M. Non-native species and lake warming negatively affect Arctic char Salvelinus alpinus abundance; deep thermal refugia facilitate co-existence. JOURNAL OF FISH BIOLOGY 2019; 94:5-16. [PMID: 30315584 DOI: 10.1111/jfb.13837] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Accepted: 10/10/2018] [Indexed: 06/08/2023]
Abstract
This study finds that non-native species and warming temperatures have significant negative effects on Arctic char Salvelinus alpinus abundance in Irish lakes. Eutrophication was not important at the range of total phosphorus tested (0.005-0.023 mg l-1 ). Model results predict that S. alpinus occur across the temperature range sampled (8.2-19.7°C) when non-natives are absent, but S. alpinus catch is predicted to be close to zero irrespective of temperature when non-native catch is high. This result indicates that to persist, S. alpinus may require a habitat where non-natives are at low abundance or absent. Salvelinus alpinus segregated from other species along the thermal axis, inhabiting significantly colder water and actively avoided non-native species, which appeared to limit their distribution. The thermal niche realized by S. alpinus in non-native dominated lakes was thus compressed relative to native dominated lakes and S. alpinus population density was significantly lower. These findings were consistent even when the only non-native present was Perca fluviatilis. Temperature appeared to limit the distribution of non-native species, such that the presence of deep thermal refugia is currently facilitating S. alpinus co-existence with non-natives in associated lakes. Diet analysis identified P. fluviatilis as potential predators and competitors. This study provides strong evidence that non-native species are a key driver of low S. alpinus abundance in Irish lakes. Temperature increases associated with climate change are identified as a secondary concern, as they could erode S. alpinus' thermal niche and lead to their extirpation. The lower thermal buffering capacity of shallow lakes identifies these as higher risk systems. Salvelinus alpinus conservation in Ireland should focus on preventing future illegal non-native species introductions because unlike other stressors (e.g., eutrophication etc.), species introductions are rarely reversible.
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Affiliation(s)
- Emma Morrissey-McCaffrey
- Inland Fisheries Ireland, Dublin, Ireland
- Freshwater Biodiversity, Ecology and Fisheries Research Group, School of Biology and Environmental Science, & Earth Institute, University College Dublin, Belfield, Ireland
| | | | | | - Mary Kelly-Quinn
- Freshwater Biodiversity, Ecology and Fisheries Research Group, School of Biology and Environmental Science, & Earth Institute, University College Dublin, Belfield, Ireland
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Introduced European smelt (Osmerus eperlanus) affects food web and fish community in a large Norwegian lake. Biol Invasions 2018. [DOI: 10.1007/s10530-018-1806-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Britton JR, Ruiz‐Navarro A, Verreycken H, Amat‐Trigo F, Trullas SC. Trophic consequences of introduced species: Comparative impacts of increased interspecific versus intraspecific competitive interactions. Funct Ecol 2018; 32:486-495. [PMID: 29576673 PMCID: PMC5856055 DOI: 10.1111/1365-2435.12978] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2017] [Accepted: 08/18/2017] [Indexed: 12/12/2022]
Abstract
Invasive species can cause substantial ecological impacts on native biodiversity. While ecological theory attempts to explain the processes involved in the trophic integration of invaders into native food webs and their competitive impacts on resident species, results are equivocal. In addition, quantifying the relative strength of impacts from non-native species (interspecific competition) versus the release of native conspecifics (intraspecific competition) is important but rarely completed.Two model non-native fishes, the globally invasive Cyprinus carpio and Carassius auratus, and the model native fish Tinca tinca, were used in a pond experiment to test how increased intra- and interspecific competition influenced trophic niches and somatic growth rates. This was complemented by samples collected from three natural fish communities where the model fishes were present. The isotopic niche, calculated using stable isotope data, represented the trophic niche.The pond experiment used additive and substitutive treatments to quantify the trophic niche variation that resulted from intra- and interspecific competitive interactions. Although the trophic niche sizes of the model species were not significantly altered by any competitive treatment, they all resulted in patterns of interspecific niche divergence. Increased interspecific competition caused the trophic niche of T. tinca to shift to a significantly higher trophic position, whereas intraspecific competition caused its position to shift towards elevated δ13C. These patterns were independent of impacts on fish growth rates, which were only significantly altered when interspecific competition was elevated.In the natural fish communities, patterns of trophic niche partitioning between the model fishes was evident, with no niche sharing. Comparison of these results with those of the experiment revealed the most similar results between the two approaches were for the niche partitioning between sympatric T. tinca and C. carpio.These results indicate that trophic niche divergence facilitates the integration of introduced species into food webs, but there are differences in how this manifests between introductions that increase inter- and intraspecific competition. In entirety, these results suggest that the initial ecological response to an introduction appears to be a trophic re-organisation of the food web that minimises the trophic interactions between competing species. A plain language summary is available for this article.
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Affiliation(s)
| | | | - Hugo Verreycken
- Research Institute for Nature and Forest (INBO)BrusselsBelgium
| | - Fatima Amat‐Trigo
- Faculty of Science and TechnologyBournemouth UniversityPooleUK
- Departmento de Zoología y Antropología FísicaUniversidad de MurciaMurciaSpain
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Vidal-García M, Keogh JS. Invasive cane toads are unique in shape but overlap in ecological niche compared to Australian native frogs. Ecol Evol 2017; 7:7609-7619. [PMID: 29043018 PMCID: PMC5632638 DOI: 10.1002/ece3.3253] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2016] [Revised: 06/07/2017] [Accepted: 06/28/2017] [Indexed: 11/29/2022] Open
Abstract
Invasive species are an important issue worldwide but predicting invasiveness, and the underlying mechanisms that cause it, is difficult. There are several primary hypotheses to explain invasion success. Two main hypothesis based on niche spaces stand out as alternative, although not exclusive. The empty niche hypothesis states that invaders occupy a vacant niche space in the recipient community, and the niche competition hypothesis states that invaders overlap with native species in niche space. Studies on trait similarity/dissimilarity between the invader and native species can provide information on their niche overlap. Here, we use the highly invasive and well‐studied cane toad (Rhinella marina) to test these two hypotheses in Australia, and assess its degree of overlap with native species in several niche dimensions. We compare extensive morphological and environmental data of this successful invader to 235 species (97%) of native Australian frogs. Our study is the first to document the significant morphological differences between the invasive cane toad and a continent‐wide frog radiation: despite significant environmental overlap, cane toads were distinct in body size and shape from most Australian frog species, suggesting that in addition to their previously documented phenotypic plasticity and wide environmental and trophic niche breadth, their unique shape also may have contributed to their success as an invasive species in Australia. Thus, the invasive success of cane toads in Australia may be explained through them successfully colonizing an empty niche among Australian anurans. Our results support that the cane toad's distinct morphology may have played a unique role in the invasiveness of this species in Australia, which coupled with a broad environmental niche breadth, would have boosted their ability to expand their distribution across Australia. We also propose RLLR (Relative limb length ratio) as a potentially useful measure of identifying morphological niche uniqueness and a potential measure of invasiveness potential in anuran amphibians.
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Affiliation(s)
- Marta Vidal-García
- Ecology and Evolution Research School of Biology The Australian National University Canberra ACT Australia
| | - J Scott Keogh
- Ecology and Evolution Research School of Biology The Australian National University Canberra ACT Australia
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Miranda M, Pecora I. Conservation implications of behavioural interactions between the Giant African Snail and a Native Brazilian species. ETHOL ECOL EVOL 2017. [DOI: 10.1080/03949370.2015.1125951] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Marcel Miranda
- Departamento de Biologia Animal, Universidade Estadual de Campinas, Instituto de Biologia, Rua Monteiro Lobato 255, Campinas, Brazil
| | - Iracy Pecora
- Instituto de Biociências, Campus do Litoral Paulista, Universidade Estadual Paulista “Júlio de Mesquita Filho”, Praça Infante Dom Henrique s/n, São Vicente, Brazil
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37
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Resource Partitioning in Food, Space and Time between Arctic Charr (Salvelinus alpinus), Brown Trout (Salmo trutta) and European Whitefish (Coregonus lavaretus) at the Southern Edge of Their Continuous Coexistence. PLoS One 2017; 12:e0170582. [PMID: 28122061 PMCID: PMC5266286 DOI: 10.1371/journal.pone.0170582] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2016] [Accepted: 01/08/2017] [Indexed: 11/19/2022] Open
Abstract
Arctic charr and European whitefish are considered to be strong competitors in lakes, with the latter usually being the superior species. However, high niche plasticity and lake morphometry may suggestively facilitate resource partitioning and coexistence between charr and whitefish. Here, we explore the trophic niche utilization (diet and habitat use) of charr and whitefish co-occurring with brown trout in the deep and oligotrophic Lake Fyresvatnet, southern Norway (59°05’N, 8°10’E). Using CPUE, stomach contents and stable isotope analyses, a distinct resource partitioning was revealed between brown trout and the other two species. Brown trout typically occupied the littoral zone, feeding on benthic invertebrates, surface insects and small-sized whitefish. In contrast, charr and whitefish were predominantly zooplanktivorous, but diverged somewhat in habitat utilization as charr shifted seasonally between the profundal and the littoral zone, whereas whitefish were found in the upper water layers (littoral and pelagic habitats). Accordingly, the stable isotope values of carbon (δ13C) reflected a pelagic orientated prey resource use for both charr and whitefish, whereas brown trout had elevated carbon and nitrogen (δ15N) signatures that reflected their benthivore and piscivore diet, respectively. The findings suggest that charr may not rely upon the profundal zone as a feeding habitat but as a refuge area, and may coexist with whitefish if a third competitive and predatory species like brown trout co-occur in the lake. The study indicates that a general high habitat plasticity of Arctic charr may be essential in the presently observed coexistence with a competitively superior fish species like whitefish, and that a third fish species like brown trout may facilitate this particular fish community structure.
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Stable isotope analysis of trophic niche in two co-occurring native and invasive terrapins, Emys orbicularis and Trachemys scripta elegans. Biol Invasions 2016. [DOI: 10.1007/s10530-016-1251-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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39
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Gallagher MC, Culloty S, McAllen R, O’Riordan R. Room for one more? Coexistence of native and non-indigenous barnacle species. Biol Invasions 2016. [DOI: 10.1007/s10530-016-1198-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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40
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Hagenlund M, Østbye K, Langdal K, Hassve M, Pettersen RA, Anderson E, Gregersen F, Præbel K. Fauna crime: elucidating the potential source and introduction history of European smelt (Osmerus eperlanus L.) into Lake Storsjøen, Norway. CONSERV GENET 2015. [DOI: 10.1007/s10592-015-0724-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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41
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Hayden B, Massa-Gallucci A, Harrod C, O'grady M, Caffrey J, Kelly-Quinn M. Trophic flexibility by roach Rutilus rutilus in novel habitats facilitates rapid growth and invasion success. JOURNAL OF FISH BIOLOGY 2014; 84:1099-1116. [PMID: 24628030 DOI: 10.1111/jfb.12351] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2013] [Accepted: 01/16/2014] [Indexed: 06/03/2023]
Abstract
Stable isotope and gut content analyses, in conjunction with backcalculated length-at-age estimates of growth, were employed to examine the relationship between trophic ecology and growth rate of a successful invader, Rutilus rutilus, in eight lakes in Ireland. The data revealed that R. rutilus was a trophic generalist in Irish lakes. It utilized a greater proportion of pelagic resources in mesotrophic lakes than in eutrophic lakes, potentially due to a greater density of benthic macroinvertebrates in eutrophic systems. The species was characterized by a large dietary and isotopic niche width and high temporal and spatial variations in diet. Growth rates were typical of those found in the native range of the species and were unrelated to either lake productivity or fish's diet. A generalist trophic ecology confers significant advantages on an invasive species, allowing it to exploit a variety of novel resources and fluctuations in prey availability.
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Affiliation(s)
- B Hayden
- Kilpisjärvi Biological Station, University of Helsinki, Käsivarrentie 14622, FI-99490, Kilpisjärvi, Finland; Department of Environmental Sciences, University of Helsinki, P. O. Box 65, FIN-00014, Helsinki, Finland; School of Biological Sciences, University College Dublin, Dublin 4, Ireland
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Bhat S, Amundsen PA, Knudsen R, Gjelland KØ, Fevolden SE, Bernatchez L, Præbel K. Speciation reversal in European whitefish (Coregonus lavaretus (L.)) caused by competitor invasion. PLoS One 2014; 9:e91208. [PMID: 24626131 PMCID: PMC3953381 DOI: 10.1371/journal.pone.0091208] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2013] [Accepted: 02/10/2014] [Indexed: 11/19/2022] Open
Abstract
Invasion of exotic species has caused the loss of biodiversity and imparts evolutionary and ecological changes in the introduced systems. In northern Fennoscandia, European whitefish (Coregonus lavaretus (L.)) is a highly polymorphic species displaying adaptive radiations into partially reproductively isolated and thus genetically differentiated sympatric morphs utilizing the planktivorous and benthivorous food niche in many lakes. In 1993, Lake Skrukkebukta was invaded by vendace (Coregonus albula (L.)) which is a zooplanktivorous specialist. The vendace displaced the densely rakered whitefish from its preferred pelagic niche to the benthic habitat harbouring the large sparsely rakered whitefish. In this study, we investigate the potential influence of the vendace invasion on the breakdown of reproductive isolation between the two whitefish morphs. We inferred the genotypic and phenotypic differentiation between the two morphs collected at the arrival (1993) and 15 years after (2008) the vendace invasion using 16 microsatellite loci and gill raker numbers, the most distinctive adaptive phenotypic trait between them. The comparison of gill raker number distributions revealed two modes growing closer over 15 years following the invasion. Bayesian analyses of genotypes revealed that the two genetically distinct whitefish morphs that existed in 1993 had collapsed into a single population in 2008. The decline in association between the gill raker numbers and admixture values over 15 years corroborates the findings from the Bayesian analysis. Our study thus suggests an apparent decrease of reproductive isolation in a morph-pair of European whitefish within 15 years (≃ 3 generations) following the invasion of a superior trophic competitor (vendace) in a subarctic lake, reflecting a situation of "speciation in reverse".
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Affiliation(s)
- Shripathi Bhat
- Department of Arctic and Marine Biology, University of Tromsø, Tromsø, Norway
| | - Per-Arne Amundsen
- Department of Arctic and Marine Biology, University of Tromsø, Tromsø, Norway
| | - Rune Knudsen
- Department of Arctic and Marine Biology, University of Tromsø, Tromsø, Norway
| | | | - Svein-Erik Fevolden
- Department of Arctic and Marine Biology, University of Tromsø, Tromsø, Norway
| | - Louis Bernatchez
- Institut de Biologie Intégrative et des Systèmes (IBIS), Université Laval, Québec, Canada
| | - Kim Præbel
- Department of Arctic and Marine Biology, University of Tromsø, Tromsø, Norway
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Hayden B, Harrod C, Kahilainen KK. Lake morphometry and resource polymorphism determine niche segregation between cool- and cold-water-adapted fish. Ecology 2014; 95:538-52. [DOI: 10.1890/13-0264.1] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Dukowska M, Grzybkowska M, Kruk A, Szczerkowska-Majchrzak E. Food niche partitioning between perch and ruffe: Combined use of a self-organising map and the IndVal index for analysing fish diet. Ecol Modell 2013. [DOI: 10.1016/j.ecolmodel.2013.06.022] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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45
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Sandlund OT, Gjelland KØ, Bøhn T, Knudsen R, Amundsen PA. Contrasting population and life history responses of a young morph-pair of European whitefish to the invasion of a specialised coregonid competitor, vendace. PLoS One 2013; 8:e68156. [PMID: 23844164 PMCID: PMC3700903 DOI: 10.1371/journal.pone.0068156] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2012] [Accepted: 05/30/2013] [Indexed: 11/19/2022] Open
Abstract
Invasions of non-native species represent a global problem of great scientific interest. Here we study in detail the response in population and life history characteristics of closely related native species, with divergent habitat preferences, that are impacted by an invading species over a sufficient time period to allow a new stable state to become established. A time series of 20 years starting at the first occurrence of the invader (vendace Coregonus albula (L.)) allows exploration of the long term population and life history response of two ecologically, morphologically, and genetically different native sympatric morphs (DR- and SR-) of congeneric whitefish C. lavaretus (L.). The whitefish morphs are taxonomically equally related to the invading vendace, but only the planktivorous DR-whitefish share its pelagic niche. We would expect that the ecological differences between the whitefish morphs may be used as a predictor of competitive effects. Vendace exhibited an initial boom-and-bust development, and has continued to fluctuate in density. The responses of the pelagic DR-whitefish were: i) an immediate habitat shift, ii) a subsequent population decline caused by increased annual mortality, and iii) a new stable state at a lower density and apparently relaxed competition. The ecologically more distant benthivorous SR-whitefish also showed significant, but a much more limited response during this process, indicating damped indirect interactions through the food-web. This long-term case-study found that in two native eco-species equally related to the invader, only one of the eco-species was highly affected. Direct competition for resources is obviously important for species interactions, whereas the taxonomic relatedness per se seems to offer little predictive power for invasion effects.
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Præbel K, Gjelland KØ, Salonen E, Amundsen PA. Invasion genetics of vendace (Coregonus albula (L.)) in the Inari-Pasvik watercourse: revealing the origin and expansion pattern of a rapid colonization event. Ecol Evol 2013; 3:1400-12. [PMID: 23762524 PMCID: PMC3678492 DOI: 10.1002/ece3.552] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2012] [Revised: 03/01/2013] [Accepted: 03/09/2013] [Indexed: 01/12/2023] Open
Abstract
Species invasions can have wide-ranging biological and socio-economic effects and are generally unwanted by legislation. Identification of the source population as well as the ecology and genetics of both the invader population and the receiving community is of crucial importance. The rapid invasion of a small coregonid fish vendace (Coregonus albula) in a major northern European subarctic watercourse has resulted in a labile ecological situation in the receiving community. The ecological impact of the invasion has been thoroughly documented, but the genetics of the invasion remains to be explored. We analyzed the genetic diversity and divergence patterns among the two possible source populations from southern Finnish Lapland and three colonists populations within the Inari-Pasvik watercourse using ten microsatellite loci in order to (i) identify the most likely source of the invasion, (ii) reveal the dispersal pattern and genetic structure of the secondary expansion, and (iii) to investigate whether the initial introduction and the secondary expansion were associated with founder effects. We revealed that repeated translocation of vendace from Lake Sinettäjärvi into a tributary lake of L. Inari in 1964–1966 is the most plausible source for the invasion. Both the initial introduction and the secondary expansion were found not to be associated with significant founder effects. The secondary expansion followed a stepping stone pattern and the source and colonist populations of this expansion have undergone rapid genetic divergence within a period of 15–35 years (ca. 8–17 generations). The rapid divergence may be contributed to lack of gene flow among the source and colonist populations due to the extensive hydroelectric damming in the watercourse. Multiple introductions and substantial genetic variation in combination with the boom-and-bust population development of the species thus likely counteracted the founder effects as well as fueled the rapid establishment and expansion of this species within the Inari-Pasvik watercourse.
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Affiliation(s)
- Kim Præbel
- Department of Arctic and Marine Biology, Faculty of Biosciences, Fisheries and Economics, University of Tromsø N-9037, Tromsø, Norway
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Duthie C, Lester PJ. Reduced densities of the invasive wasp, Vespula vulgaris (Hymenoptera: Vespidae), did not alter the invertebrate community composition of Nothofagus forests in New Zealand. ENVIRONMENTAL ENTOMOLOGY 2013; 42:223-230. [PMID: 23575011 DOI: 10.1603/en12256] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Invasive common wasps (Vespula vulgaris L.) are predators of invertebrates in Nothofagus forests of New Zealand. We reduced wasp densities by poisoning in three sites over three y. We predicted an increase in the number of invertebrates and a change in the community composition in sites where wasps were poisoned (wasps removed) relative to nearby sites where wasps were not poisoned (wasps maintained). Wasp densities were significantly reduced by an average of 58.9% by poisoning. Despite this reduction in wasp densities, native bush ants (Prolasius advenus Forel) were the only taxa that was significantly influenced by wasp removal. However, contrary to our predictions there were more ants caught in pitfall traps where wasps were maintained. We believe that the higher abundance of these ants is probably because of the scarcity of honeydew in wasp-maintained sites and compensatory foraging by ants in these areas. Otherwise, our results indicated no significant effects of reduced wasp densities on the total number of invertebrates, or the number of invertebrate families, observed in pitfall or Malaise traps. An analysis of community composition (permutational multivariate analysis of variance) also indicated no significant difference between wasp-removed or wasp-maintained communities. The most parsimonious explanation for our results is that although we significantly reduced wasp numbers, we may not have reduced numbers sufficiently or for a sufficiently long period, to see a change or recovery in the community.
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Affiliation(s)
- Catherine Duthie
- Centre for Biodiversity and Restoration Ecology, Victoria University of Wellington, P.O. Box 600, Wellington, New Zealand
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Acevedo S, Saddlier S, Clunie P, Ayres R. A decision support tool for the management of freshwater pest fish incursions in Australia. ECOLOGICAL MANAGEMENT & RESTORATION 2013. [DOI: 10.1111/emr.12036] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Effects of the non-native amphibian species Discoglossus pictus on the recipient amphibian community: niche overlap, competition and community organization. Biol Invasions 2012. [DOI: 10.1007/s10530-012-0328-4] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Auger-Rozenberg MA, Roques A. Seed wasp invasions promoted by unregulated seed trade affect vegetal and animal biodiversity. Integr Zool 2012; 7:228-246. [PMID: 22938521 DOI: 10.1111/j.1749-4877.2012.00308.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Affiliation(s)
| | - Alain Roques
- French National Institute for Agricultural Research (INRA), Forest Ecology (UR633), Orleans, France
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