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Mlambo S, Mubayiwa M, Tarusikirwa VL, Machekano H, Mvumi BM, Nyamukondiwa C. The Fall Armyworm and Larger Grain Borer Pest Invasions in Africa: Drivers, Impacts and Implications for Food Systems. BIOLOGY 2024; 13:160. [PMID: 38534430 DOI: 10.3390/biology13030160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Revised: 11/09/2023] [Accepted: 11/13/2023] [Indexed: 03/28/2024]
Abstract
Invasive alien species (IAS) are a major biosecurity threat affecting globalisation and the international trade of agricultural products and natural ecosystems. In recent decades, for example, field crop and postharvest grain insect pests have independently accounted for a significant decline in food quantity and quality. Nevertheless, how their interaction and cumulative effects along the ever-evolving field production to postharvest continuum contribute towards food insecurity remain scant in the literature. To address this within the context of Africa, we focus on the fall armyworm, Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae), and the larger grain borer, Prostephanus truncatus (Horn) (Coleoptera: Bostrichidae), two of the most important field and postharvest IAS, respectively, that have invaded Africa. Both insect pests have shown high invasion success, managing to establish themselves in >50% of the African continent within a decade post-introduction. The successive and summative nature of field and postharvest damage by invasive insect pests on the same crop along its value chain results in exacerbated food losses. This systematic review assesses the drivers, impacts and management of the fall armyworm and larger grain borer and their effects on food systems in Africa. Interrogating these issues is important in early warning systems, holistic management of IAS, maintenance of integral food systems in Africa and the development of effective management strategies.
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Affiliation(s)
- Shaw Mlambo
- Department of Biological Sciences and Biotechnology, Botswana International University of Science and Technology, Private Bag 16, Palapye 10071, Botswana
| | - Macdonald Mubayiwa
- Department of Biological Sciences and Biotechnology, Botswana International University of Science and Technology, Private Bag 16, Palapye 10071, Botswana
| | - Vimbai L Tarusikirwa
- Department of Biology, The University of Western Ontario, London, ON N6A 5B7, Canada
| | - Honest Machekano
- Department of Zoology and Entomology, University of Pretoria, Private Bag X20, Pretoria 0028, South Africa
| | - Brighton M Mvumi
- Department of Agricultural and Biosystems Engineering, University of Zimbabwe, Mount Pleasant, Harare P.O. Box MP167, Zimbabwe
| | - Casper Nyamukondiwa
- Department of Biological Sciences and Biotechnology, Botswana International University of Science and Technology, Private Bag 16, Palapye 10071, Botswana
- Department of Zoology and Entomology, Rhodes University, Makhanda 6140, South Africa
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2
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Montanaro RC, O'Connor NJ. Temporal and spatial refugia modify predation risk for non-native crabs in rocky intertidal habitats. PeerJ 2024; 12:e16852. [PMID: 38317840 PMCID: PMC10840497 DOI: 10.7717/peerj.16852] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2023] [Accepted: 01/08/2024] [Indexed: 02/07/2024] Open
Abstract
Populations of the non-native Asian shore crab, Hemigrapsus sanguineus, now dominate the rocky intertidal of southern New England, USA. High abundances suggest the recent invader may have experienced enhanced success as a result of enemy release. While larvae and juveniles may serve as a food source for ecologically important species, little is known about predation of mature H. sanguineus or the influence of habitat on predation pressure. To assess natural predation rates of adult H. sanguineus, crabs were tethered in the intertidal at Clarks Cove in New Bedford, MA. Crabs were left in situ for half of a tidal cycle then observed for signs of predation. Results of separate high and low tide trials showed that adult crabs were preyed upon at both high and low tide, though at a significantly higher rate during high tide during both daytime and nighttime, suggesting predation by aquatic species is greater than that by terrestrial species. To investigate the role of habitat as refuge from predation, a laboratory experiment manipulated the complexity of habitat provided to crabs in the presence of a native fish predator. Results indicate better refuge is provided by more complex shelter. Together, findings suggest that fish, crabs, and/or diving birds are important predators for H. sanguineus in the invaded range and that habitat refuge acts to reduce predation pressure.
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Affiliation(s)
- Renee C Montanaro
- Biology Department, University of Massachusetts at Dartmouth, Dartmouth, MA, United States of America
| | - Nancy J O'Connor
- Biology Department, University of Massachusetts at Dartmouth, Dartmouth, MA, United States of America
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Chebaane S, Pais MP, Engelen AH, Ramalhosa P, Silva R, Gizzi F, Canning-Clode J, Bernal-Ibáñez A, Monteiro JG. Exploring foraging preference of local fish species towards non-indigenous fouling communities near marinas: Insights from Remote Video Foraging System (RVFS) trials. MARINE POLLUTION BULLETIN 2024; 198:115871. [PMID: 38086107 DOI: 10.1016/j.marpolbul.2023.115871] [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: 10/16/2023] [Revised: 11/25/2023] [Accepted: 11/29/2023] [Indexed: 01/05/2024]
Abstract
Non-indigenous species (NIS) spread from marinas to natural environments is influenced by niche availability, habitat suitability, and local biotic resistance. This study explores the effect of indigenous fish feeding behaviour on NIS proliferation using fouling communities, pre-grown on settlement plates, as two distinct, representative models: one from NIS-rich marinas and the other from areas outside marinas with fewer NIS. These plates were mounted on a Remote Video Foraging System (RVFS) near three marinas on Madeira Island. After 24-h, NIS abundance was reduced by 3.5 %. Canthigaster capistrata's preference for marinas plates suggests potential biotic resistance. However, Sparisoma cretense showed equal biting frequencies for both plate types. The cryptogenic ascidian Trididemnum cereum was the preferred target for the fish. Our study introduces a global framework using RVFS for in-situ experiments, replicable across divers contexts (e.g., feeding behaviour, biotic resistance), which can be complemented by metabarcoding and isotopic analysis to confirm consumption patterns.
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Affiliation(s)
- Sahar Chebaane
- MARE - Marine and Environmental Sciences Centre/ARNET - Aquatic Research Network, Regional Agency for the Development of Research, Technology and Innovation (ARDITI), Funchal, Portugal.
| | - Miguel Pessanha Pais
- MARE - Marine and Environmental Sciences Centre/ARNET - Aquatic Research Network, Faculdade de Ciências, Universidade de Lisboa, Portugal; Departamento de Biologia Animal, Faculdade de Ciências, Universidade de Lisboa, Portugal
| | | | - Patrício Ramalhosa
- MARE - Marine and Environmental Sciences Centre/ARNET - Aquatic Research Network, Regional Agency for the Development of Research, Technology and Innovation (ARDITI), Funchal, Portugal
| | - Rodrigo Silva
- MARE - Marine and Environmental Sciences Centre/ARNET - Aquatic Research Network, Regional Agency for the Development of Research, Technology and Innovation (ARDITI), Funchal, Portugal
| | - Francesca Gizzi
- MARE - Marine and Environmental Sciences Centre/ARNET - Aquatic Research Network, Regional Agency for the Development of Research, Technology and Innovation (ARDITI), Funchal, Portugal
| | - João Canning-Clode
- MARE - Marine and Environmental Sciences Centre/ARNET - Aquatic Research Network, Regional Agency for the Development of Research, Technology and Innovation (ARDITI), Funchal, Portugal; Smithsonian Environmental Research Center, Edgewater, MD 21037, USA
| | - Alejandro Bernal-Ibáñez
- MARE - Marine and Environmental Sciences Centre/ARNET - Aquatic Research Network, Regional Agency for the Development of Research, Technology and Innovation (ARDITI), Funchal, Portugal
| | - João Gama Monteiro
- MARE - Marine and Environmental Sciences Centre/ARNET - Aquatic Research Network, Regional Agency for the Development of Research, Technology and Innovation (ARDITI), Funchal, Portugal; Faculty of Life Sciences, University of Madeira, 9000 Funchal, Portugal
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Paul P, Gupta NK, Singh D, Banerjee S, Ghosh S, Aditya G. Invasion potential of the aquarium pet snail Planorbella trivolvis in India: impact of certain abiotic and biotic factors. ENVIRONMENTAL MONITORING AND ASSESSMENT 2023; 195:985. [PMID: 37488362 DOI: 10.1007/s10661-023-11530-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Accepted: 06/17/2023] [Indexed: 07/26/2023]
Abstract
Planorbella trivolvis (ramshorn snail) is one of India's most extensively sold exotic aquarium pet snails. The unintentional or deliberate release of P. trivolvis may result in the colonisation and establishment as an invasive snail in freshwater ecosystems. However, the successful invasion of P. trivolvis will depend on several abiotic and biotic factors of the concerned freshwater ecosystem. We have assessed the possibility of overcoming the opposing factors in P. trivolvis invasion through laboratory-based experiments and examined the effects of household-derived pollutants on egg hatchability, adult survivability and fecundity, and temperature (15 to 35 °C) on growth, sexual maturity, and reproduction. Additionally, we have evaluated the potential of native predators as biotic resistance to invasion by prey-choice experiment. The results indicated that egg hatchability, adult survivability, and fecundity were reduced with increasing pollutant concentration. However, the same traits did not differ from a native freshwater snail, Indoplanorbis exustus. The fecundity of P. trivolvis increased with increasing body size, but no considerable differences at different temperature levels suggest a wide range of adaptation to temperature. Faster growth and the requirement of comparatively few days to attain sexual maturity were observed in the higher temperatures. The native predators, Glossiphonia weberi and Diplonychus rusticus, avoided P. trivolvis as prey over the alternative prey snails in most instances, suggesting the masking of biotic resistance against the colonisation. Our observations indicate that the chance dispersal of P. trivolvis from household or commercial aquaria may lead to a possible invasion of freshwater ecosystems under suitable conditions.
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Affiliation(s)
- Pranesh Paul
- Department of Zoology, University of Calcutta, 35, Ballygunge Circular Road, Kolkata, 700019, India
| | - Neha Kumari Gupta
- Department of Zoology, University of Calcutta, 35, Ballygunge Circular Road, Kolkata, 700019, India
| | - Debosmita Singh
- Department of Zoology, University of Calcutta, 35, Ballygunge Circular Road, Kolkata, 700019, India
| | - Swastik Banerjee
- Department of Zoology, University of Calcutta, 35, Ballygunge Circular Road, Kolkata, 700019, India
| | - Surajit Ghosh
- Department of Zoology, University of Calcutta, 35, Ballygunge Circular Road, Kolkata, 700019, India
| | - Gautam Aditya
- Department of Zoology, University of Calcutta, 35, Ballygunge Circular Road, Kolkata, 700019, India.
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Chebaane S, Freestone AL, Pérez AD, Sempere-Valverde J, Chainho P, Monteiro JG, Canning-Clode J. Predation facilitates the abundance of biofouling non-indigenous species in estuarine marinas in NE Atlantic Portugal. MARINE POLLUTION BULLETIN 2023; 188:114724. [PMID: 36860018 DOI: 10.1016/j.marpolbul.2023.114724] [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: 10/14/2022] [Revised: 02/06/2023] [Accepted: 02/09/2023] [Indexed: 06/18/2023]
Abstract
Harbours are highly modified habitats that differ from natural areas. They are hotspots of non-indigenous species (NIS) and act as stepping-stones in invasive processes. However, local communities can exert biotic resistance against biological invasions through trophic interactions and competition. This study assesses the biotic effects of predation on the recruitment of fouling assemblages in three marinas of NE Atlantic Portugal (Cascais, Setúbal and Sines), with particular emphasis on NIS, using predator exclusion experiments. Predation increased the relative abundance of NIS, mainly Watersipora subatra, in the estuarine marinas of Cascais and Setúbal, while no predation effects were registered in the coastal marina of Sines. Therefore, predation can increase the risk of NIS invasion (biotic facilitation). Furthermore, local ecosystems may have different effects and differ in vulnerability against NIS invasions. Finally, a better understanding of coastal invasive ecology and biotic effects in coastal artificial habitats will improve our capacity for NIS management.
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Affiliation(s)
- Sahar Chebaane
- MARE-Marine and Environmental Sciences Centre/ARNET-Aquatic Research Network, Regional Agency for the Development of Research, Technology and Innovation (ARDITI), Funchal, Portugal; Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749-016 Lisboa, Portugal.
| | - Amy L Freestone
- Department of Biology, Temple University, Philadelphia, PA, USA
| | - Antonio Des Pérez
- MARE-Marine and Environmental Sciences Centre/ARNET-Aquatic Research Network, Faculdade de Ciências, Universidade de Lisboa, Portugal
| | - Juan Sempere-Valverde
- MARE-Marine and Environmental Sciences Centre/ARNET-Aquatic Research Network, Regional Agency for the Development of Research, Technology and Innovation (ARDITI), Funchal, Portugal; Laboratorio de Biología Marina, Departamento de Zoología, Facultad de Biología de la Universidad de Sevilla, Av. de la Reina Mercedes S/N, 41012 Sevilla, Spain
| | - Paula Chainho
- MARE-Marine and Environmental Sciences Centre/ARNET-Aquatic Research Network, Faculdade de Ciências, Universidade de Lisboa, Portugal; CINEA-Centre for Energy and Environment Research, Polytechnic Institute of Setúbal, Campus do IPS Estefanilha, Setúbal, Portugal
| | - João Gama Monteiro
- MARE-Marine and Environmental Sciences Centre/ARNET-Aquatic Research Network, Regional Agency for the Development of Research, Technology and Innovation (ARDITI), Funchal, Portugal; Faculty of Life Sciences, Universidade da Madeira, Funchal, Portugal
| | - João Canning-Clode
- MARE-Marine and Environmental Sciences Centre/ARNET-Aquatic Research Network, Regional Agency for the Development of Research, Technology and Innovation (ARDITI), Funchal, Portugal; Smithsonian Environmental Research Center, Edgewater, MD 21037, USA
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Santamaría J, Golo R, Verdura J, Tomas F, Ballesteros E, Alcoverro T, Arthur R, Cebrian E. Learning takes time: Biotic resistance by native herbivores increases through the invasion process. Ecol Lett 2022; 25:2525-2539. [PMID: 36209457 PMCID: PMC9828756 DOI: 10.1111/ele.14115] [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: 03/16/2022] [Revised: 08/08/2022] [Accepted: 09/08/2022] [Indexed: 01/12/2023]
Abstract
As invasive species spread, the ability of local communities to resist invasion depends on the strength of biotic interactions. Evolutionarily unused to the invader, native predators or herbivores may be initially wary of consuming newcomers, allowing them to proliferate. However, these relationships may be highly dynamic, and novel consumer-resource interactions could form as familiarity grows. Here, we explore the development of effective biotic resistance towards a highly invasive alga using multiple space-for-time approaches. We show that the principal native Mediterranean herbivore learns to consume the invader within less than a decade. At recently invaded sites, the herbivore actively avoided the alga, shifting to distinct preference and high consumptions at older sites. This rapid strengthening of the interaction contributed to the eventual collapse of the alga after an initial dominance. Therefore, our results stress the importance of conserving key native populations to allow communities to develop effective resistance mechanisms against invaders.
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Affiliation(s)
- Jorge Santamaría
- Centre d'Estudis Avançats de Blanes, Consejo Superior de Investigaciones Científicas (CEAB‐CSIC)BlanesSpain,GRMAR, Institut d'Ecologia Aquàtica, Universitat de GironaGironaSpain
| | - Raül Golo
- GRMAR, Institut d'Ecologia Aquàtica, Universitat de GironaGironaSpain
| | - Jana Verdura
- Centre d'Estudis Avançats de Blanes, Consejo Superior de Investigaciones Científicas (CEAB‐CSIC)BlanesSpain,Université Côte d'Azur, CNRSECOSEASNiceFrance
| | - Fiona Tomas
- Marine Ecosystems Dynamics Group—Instituto Mediterráneo de Estudios Avanzados (IMEDEA), Universitat de les Illes Balears (UIB) – Consejo Superior de Investigaciones Científicas (CSIC)EsporlesBalearic IslandsSpain
| | - Enric Ballesteros
- Centre d'Estudis Avançats de Blanes, Consejo Superior de Investigaciones Científicas (CEAB‐CSIC)BlanesSpain
| | - Teresa Alcoverro
- Centre d'Estudis Avançats de Blanes, Consejo Superior de Investigaciones Científicas (CEAB‐CSIC)BlanesSpain
| | - Rohan Arthur
- Centre d'Estudis Avançats de Blanes, Consejo Superior de Investigaciones Científicas (CEAB‐CSIC)BlanesSpain,Nature Conservation FoundationMysoreIndia
| | - Emma Cebrian
- Centre d'Estudis Avançats de Blanes, Consejo Superior de Investigaciones Científicas (CEAB‐CSIC)BlanesSpain,GRMAR, Institut d'Ecologia Aquàtica, Universitat de GironaGironaSpain
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Baxter-Gilbert J, Riley JL, Wagener C, Baider C, Florens FBV, Kowalski P, Campbell M, Measey J. Island Hopping through Urban Filters: Anthropogenic Habitats and Colonized Landscapes Alter Morphological and Performance Traits of an Invasive Amphibian. Animals (Basel) 2022; 12:ani12192549. [PMID: 36230289 PMCID: PMC9559409 DOI: 10.3390/ani12192549] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Revised: 07/28/2022] [Accepted: 09/19/2022] [Indexed: 11/17/2022] Open
Abstract
Simple Summary Invasive species are common on islands and, increasingly so, in urban ecosystems. They can pose serious ecological and socioeconomic impacts, making research on how invasions are promoted critically important. We examined different traits of guttural toads (Sclerophrys gutturalis) in their natural and invasive ranges (both natural and urban populations in native and invasive sites) to understand if divergences in habitats in their native range could increase their invasive potential. We found that invasive island populations on Mauritius and Réunion (Indian Ocean) have reduced body sizes, proportionally shorter limbs, slower escape speeds, and reduced endurance capacities compared to the native South African populations. In short, these changes occurred post-invasion. However, increase climbing ability was seen within the urban-native toads, a trait maintained within the two invasions, suggesting that it may have been an advantageous prior adaptation. Becoming climbers may have benefited the toad during colonization, increasing navigation and hunting ability within the urbanized areas where they were introduced, prior to their spread into natural areas. This change in climbing performance is an example of how the urbanization of native taxa may be increasing the ability of certain species to become better invaders should they be introduced outside their native range. Abstract A prominent feature of the modern era is the increasing spread of invasive species, particularly within island and urban ecosystems, and these occurrences provide valuable natural experiments by which evolutionary and invasion hypotheses can be tested. In this study, we used the invasion route of guttural toads (Sclerophrys gutturalis) from natural-native and urban-native populations (Durban, South Africa) to their urban-invasive and natural-invasive populations (Mauritius and Réunion) to determine whether phenotypic changes that arose once the toads became urbanized in their native range have increased their invasive potential before they were transported (i.e., prior adaptation) or whether the observed changes are unique to the invasive populations. This urban/natural by native/invasive gradient allowed us to examine differences in guttural toad morphology (i.e., body size, hindlimb, and hindfoot length) and performance capacity (i.e., escape speed, endurance, and climbing ability) along their invasion route. Our findings indicate that invasive island populations have reduced body sizes, shorter limbs in relation to snout-vent length, decreased escape speeds, and decreased endurance capacities that are distinct from the native mainland populations (i.e., invasion-derived change). Thus, these characteristics did not likely arise directly from a pre-transport anthropogenic “filter” (i.e., urban-derived change). Climbing ability, however, did appear to originate within the urban-native range and was maintained within the invasive populations, thereby suggesting it may have been a prior adaptation that provided this species with an advantage during its establishment in urban areas and spread into natural forests. We discuss how this shift in climbing performance may be ecologically related to the success of urban and invasive guttural toad populations, as well as how it may have impacted other island-derived morphological and performance phenotypes.
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Affiliation(s)
- James Baxter-Gilbert
- Centre for Invasion Biology, Department of Botany and Zoology, Stellenbosch University, Stellenbosch 7405, South Africa
- Department of Biology, Mount Allison University, Sackville, NB E4L 1E2, Canada
- Correspondence:
| | - Julia L. Riley
- Department of Biology, Mount Allison University, Sackville, NB E4L 1E2, Canada
- Department of Botany and Zoology, Stellenbosch University, Stellenbosch 7405, South Africa
- Department of Biology, Dalhousie University, Halifax, NS B3H 4R2, Canada
| | - Carla Wagener
- Centre for Invasion Biology, Department of Botany and Zoology, Stellenbosch University, Stellenbosch 7405, South Africa
- Department of Zoology, University of Oxford, Oxford OX1 4BH, UK
| | - Cláudia Baider
- The Mauritius Herbarium, Agricultural Services, Ministry of Agro-Industry and Food Security, Réduit 80835, Mauritius
| | - F. B. Vincent Florens
- Tropical Island Biodiversity, Ecology and Conservation Pole of Research, Faculty of Science, University of Mauritius, Réduit 80837, Mauritius
| | | | - May Campbell
- Grow Learning Support, Ballito 4391, South Africa
| | - John Measey
- Centre for Invasion Biology, Department of Botany and Zoology, Stellenbosch University, Stellenbosch 7405, South Africa
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From Plates to Baits: Using a Remote Video Foraging System to Study the Impact of Foraging on Fouling Non-Indigenous Species. JOURNAL OF MARINE SCIENCE AND ENGINEERING 2022. [DOI: 10.3390/jmse10050611] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Abstract
Marinas are a gateway for the introduction and establishment of non-indigenous species (NIS). In these habitats, competition and predation are crucial determinants for NIS establishment and invasiveness. However, fish trophic preferences and biotic effects inside marinas are poorly known. This study proposes a novel method that combines the deployment of settlement plates to recruit different assemblages, followed by their use as bait in remote underwater video systems. This combined approach, addressed as a remote video foraging system (RVFS), can record fish foraging behaviour, including feeding choices and their impacts on fouling assemblage composition. An experimental RVFS trial carried out in a marina of Madeira Island, Portugal (NE Atlantic), identified the Mediterranean parrotfish, Sparisoma cretense, as the most important fouling grazer in the area. S. cretense behaved as a generalist and increased the heterogeneity of fouling assemblages, which can hamper NIS dominance of the fouling and reduce the pressure of propagules from the marina to the natural environment. The RVFS tool was useful to understand the trophic links between foragers and fouling and has the potential to provide relevant information for the management of NIS introductions, establishment and spread.
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Clavero M, Franch N, Bernardo-Madrid R, López V, Abelló P, Queral JM, Mancinelli G. Severe, rapid and widespread impacts of an Atlantic blue crab invasion. MARINE POLLUTION BULLETIN 2022; 176:113479. [PMID: 35240457 DOI: 10.1016/j.marpolbul.2022.113479] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Revised: 02/14/2022] [Accepted: 02/16/2022] [Indexed: 06/14/2023]
Abstract
The Atlantic blue crab (Callinectes sapidus) has rapidly invaded coastal environments in the western Mediterranean, but there is no consistent assessment of its impacts yet. We use interviews and long-term data series in the Ebro Delta (NE Spain) to: i) characterise the evolution of the blue crab invasion; and ii) identify its impacts. The blue crab was first recorded in 2012, but its expansion started around 2016, with an exponential increase in abundance between 2017 and 2018. Aquatic communities have tended to be dominated by the blue crab, coinciding with the steep and consistent declines of several species, including threatened and commercially exploited ones. Blue crab impacts seem to be exerted even at low abundances, arguably hindering the recovery of declining species. The blue crab is becoming a keystone species in invaded systems and efforts should be made to understand its many-folds impacts in order to prevent or mitigate them.
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Affiliation(s)
- Miguel Clavero
- Doñana Biological Station - CSIC, Av. Americo Vspucio 26, 41092 Sevilla, Spain.
| | - Nati Franch
- Parc Natural del Delta de l'Ebre, Av. Catalunya 46, 43580 Deltebre, Tarragona, Spain
| | | | - Verónica López
- Institut d'Estudis Professionals Aqüícoles i Ambientals de Catalunya (IEPAAC), 43540 Sant Carles de la Ràpita, Tarragona, Spain
| | - Pere Abelló
- Institut de Ciències del Mar (ICM-CSIC), Passeig Marítim 37-49, 08003 Barcelona, Catalonia, Spain
| | - Josep Maria Queral
- Parc Natural del Delta de l'Ebre, Av. Catalunya 46, 43580 Deltebre, Tarragona, Spain
| | - Giorgio Mancinelli
- Department of Biological and Environmental Sciences and Technologies (DiSTeBA), University of Salento, SP Lecce-Monteroni, 73100 Lecce, Italy; National Research Council - Institute of Marine Biological Resources and Biotechnologies (CNR-IRBIM), Via Pola 4, 71010 Lesina, FG, Italy; CoNISMa, Consorzio Nazionale Interuniversitario per le Scienze del Mare, Piazzale Flaminio 9, 00196 Roma, Italy
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Quarrell NJ, Strickland D, Norris DR. Investigating factors that set the lower elevational limit of Canada Jays (Perisoreus canadensis) on Vancouver Island, British Columbia, Canada. CAN J ZOOL 2022. [DOI: 10.1139/cjz-2021-0108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The biotic and abiotic factors responsible for determining ranges of most species are poorly understood. The Canada Jay (Perisoreus canadensis (Linnaeus, 1766)) relies on perishable cached food for over-winter survival and late-winter breeding and the persistence of cached food could be a driver of range limits. We confirmed that the Canada Jay’s lower elevational limit on Vancouver Island, British Columbia, Canada, matches that of the subalpine zone (900 m) and then conducted simulated caching experiments to examine the influence of antimicrobial properties of subalpine tree species (biotic) and of temperature (abiotic) on the preservation of cached food. We found that two high-elevation species, yellow cedar (Callitropsis nootkatensis (D. Don) D.P. Little) and Amabilis fir (Abies amabilis Douglas ex J. Forbes), preserved cached blueberries and chicken flesh better than other trees, but they also occurred well below the lower limit of Canada Jays. The effect of temperature was similarly unclear; while food cached at 1150 m retained 17% more mass than food cached at 550 m, there was no difference in percent mass remaining of food placed 70 m above versus 120 m below the Canada Jay’s lower elevational limit. Thus, we were unable to provide definitive evidence that either of the proposed abiotic or biotic factors was responsible for setting thelower elevational limit of resident Canada Jays.
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Affiliation(s)
| | | | - D. Ryan Norris
- Department of Integrative Biology, University of Guelph, Guelph, ON N1G 2W1, Canada
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Papantoniou G, Giannoulaki M, Stoumboudi MT, Lefkaditou E, Tsagarakis K. Food web interactions in a human dominated Mediterranean coastal ecosystem. MARINE ENVIRONMENTAL RESEARCH 2021; 172:105507. [PMID: 34742025 DOI: 10.1016/j.marenvres.2021.105507] [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: 04/22/2021] [Revised: 09/21/2021] [Accepted: 10/19/2021] [Indexed: 06/13/2023]
Abstract
Mediterranean coastal ecosystems provide various valuable ecosystem goods and services; however, they are vulnerable to ecological degradation due to a dramatic increase in resource use and environmental stress. Disentangling the effects of multiple human interventions on coastal ecosystems requires whole description of food web interactions using quantitative tools. A mass balance Ecopath model has been developed here for Saronikos Gulf, a naturally oligotrophic Mediterranean coastal ecosystem with a long history of human interventions. Our main focus was to describe the structure and functioning of the ecosystem, investigate the trophic interplay among the various compartments of the food web under the impact of mixed multi-gear fisheries, and to quantify resilience related emergent ecosystem properties. To this end, we reviewed a large amount of local and regional biological information which was integrated in 40 functional groups covering all trophic levels, while fishing activities were described with 7 fleets. The model shared characteristics of both productive (e.g., high amount of flows) and oligotrophic systems (e.g., low biomass accumulation) and presented typical features of Mediterranean ecosystem functioning, such as the importance of detritus as an energy source, strong benthic-pelagic coupling and the dominance of the pelagic compartment in terms of total production and consumption. Trophic forcing in the ecosystem of Saronikos Gulf was complex with both top-down and bottom-up drivers being important. Zooplankton was the central nexus between basal resources and higher trophic levels, while top predators such as hake, squids and anglerfish were identified as keystone species presenting a significant overall effect on the food web via direct and indirect trophic interactions. Ecological indicators depicted a moderately complex food-web of a large and immature ecosystem with its strengths in reserve being affected by environmental degradation. Additionally, exploitation indices classified fishing activities in Saronikos Gulf as unsustainable, affecting several target groups, including high trophic level species. However, the morphological and bathymetric complexity of Saronikos Gulf seems to function as a natural ecological reserve for the ecosystem by providing nursery grounds to various species (e.g., hake, small pelagic fishes) and supporting important fish stocks for local fisheries.
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Affiliation(s)
- Georgia Papantoniou
- Hellenic Centre for Marine Research, Institute of Marine Biological Resources and Inland Waters, 46.7 km Athinon-Souniou Ave, P.O. BOX 712, Anavyssos, GR19013, Greece.
| | - Marianna Giannoulaki
- Hellenic Centre for Marine Research, Institute of Marine Biological Resources and Inland Waters, P.O. Box 2214, 71003, Heraklion, Crete, Greece.
| | - Maria Th Stoumboudi
- Hellenic Centre for Marine Research, Institute of Marine Biological Resources and Inland Waters, 46.7 km Athinon-Souniou Ave, P.O. BOX 712, Anavyssos, GR19013, Greece.
| | - Evgenia Lefkaditou
- Hellenic Centre for Marine Research, Institute of Marine Biological Resources and Inland Waters, 46.7 km Athinon-Souniou Ave, P.O. BOX 712, Anavyssos, GR19013, Greece.
| | - Konstantinos Tsagarakis
- Hellenic Centre for Marine Research, Institute of Marine Biological Resources and Inland Waters, 46.7 km Athinon-Souniou Ave, P.O. BOX 712, Anavyssos, GR19013, Greece.
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12
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Santamaría J, Tomas F, Ballesteros E, Ruiz JM, Bernardeau-Esteller J, Terrados J, Cebrian E. The role of competition and herbivory in biotic resistance against invaders: a synergistic effect. Ecology 2021; 102:e03440. [PMID: 34143423 DOI: 10.1002/ecy.3440] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Accepted: 04/05/2021] [Indexed: 11/08/2022]
Abstract
Invasive species pose a major threat to global diversity, and once they are well established their eradication typically becomes unfeasible. However, certain natural mechanisms can increase the resistance of native communities to invaders and can be used to guide effective management policies. Both competition and herbivory have been identified as potential biotic resistance mechanisms that can limit plant invasiveness, but it is still under debate to what extent they might be effective against well-established invaders. Surprisingly, whereas biotic mechanisms are known to interact strongly, most studies to date have examined single biotic mechanisms separately, which likely influences our understanding of the strength and effectiveness of biotic resistance against invaders. Here we use long-term field data, benthic assemblage sampling, and exclusion experiments to assess the effect of native assemblage complexity and herbivory on the invasion dynamics of a successful invasive species, the alga Caulerpa cylindracea. A higher complexity of the native algal assemblage limited C. cylindracea invasion, probably through competition by canopy-forming and erect algae. Additionally, high herbivory pressure by the fish Sarpa salpa reduced C. cylindracea abundance by more than four times. However, long-term data of the invasion reflects that biotic resistance strength can vary across the invasion process and it is only where high assemblage complexity is concomitant with high herbivory pressure, that the most significant limitation is observed (synergistic effect). Overall, the findings reported in this study highlight that neglecting the interactions between biotic mechanisms during invasive processes and restricting the studied time scales may lead to underestimations of the true capacity of native assemblages to develop resistance to invaders.
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Affiliation(s)
- Jorge Santamaría
- Marine Resources and Biodiversity Research Group (GRMAR), Institute of Aquatic Ecology, University of Girona, Girona, 17003, Catalonia, Spain
| | - Fiona Tomas
- Marine Ecosystems Dynamics Group-Instituto Mediterráneo de Estudios Avanzados (IMEDEA), Universitat de les Illes Balears (UIB)-Consejo Superior de Investigaciones Científicas (CSIC), Esporles, 07190, Balearic Islands, Spain
| | - Enric Ballesteros
- Centre d'Estudis Avançats de Blanes, Consejo Superior de Investigaciones Científicas (CEAB-CSIC), Blanes, 17300, Catalonia, Spain
| | - Juan M Ruiz
- Seagrass Ecology Group-Centro Oceanográfico de Murcia, Instituto Español de Oceanografía (IEO), San Pedro del Pinatar, 30740, Murcia, Spain
| | - Jaime Bernardeau-Esteller
- Seagrass Ecology Group-Centro Oceanográfico de Murcia, Instituto Español de Oceanografía (IEO), San Pedro del Pinatar, 30740, Murcia, Spain
| | - Jorge Terrados
- Marine Ecosystems Dynamics Group-Instituto Mediterráneo de Estudios Avanzados (IMEDEA), Universitat de les Illes Balears (UIB)-Consejo Superior de Investigaciones Científicas (CSIC), Esporles, 07190, Balearic Islands, Spain
| | - Emma Cebrian
- Centre d'Estudis Avançats de Blanes, Consejo Superior de Investigaciones Científicas (CEAB-CSIC), Blanes, 17300, Catalonia, Spain
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13
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Borzée A, Litvinchuk SN, Ri K, Andersen D, Nam TY, Jon GH, Man HS, Choe JS, Kwon S, Othman SN, Messenger K, Bae Y, Shin Y, Kim A, Maslova I, Luedtke J, Hobin L, Moores N, Seliger B, Glenk F, Jang Y. Update on Distribution and Conservation Status of Amphibians in the Democratic People's Republic of Korea: Conclusions Based on Field Surveys, Environmental Modelling, Molecular Analyses and Call Properties. Animals (Basel) 2021; 11:2057. [PMID: 34359183 PMCID: PMC8300379 DOI: 10.3390/ani11072057] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Revised: 05/25/2021] [Accepted: 07/01/2021] [Indexed: 11/17/2022] Open
Abstract
Determining the range, status, ecology and behaviour of species from areas where surveys and samplings are uncommon or difficult to conduct is a challenge, such as in the Democratic People's Republic of Korea (DPR Korea). Here, we used genetic samples, field surveys, call recordings, photographic identification and a literature review to estimate the presence, range and status of amphibians in the DPR Korea. From our combined results and based on the IUCN Red List categories and criteria, we were able to estimate the national threat levels for most species. Our results demonstrated the presence of 18 native species and the suspected presence of Karsenia koreana and two Onychodactylus species. We reported the first record for Rana uenoi in the vicinity of Pyongyang using molecular tools and similarly confirmed the presence of Dryophytes japonicus at the same location. Based on distribution and modelling, we can expect the contact zone between species within the Rana and Onychodactylus genera to be located along the Changbai Massif, a mountain range that marks a shift in ecoregions and acts as a barrier to dispersion. The species richness was higher in the lowlands and at lower latitudes, with such areas populated by up to 11 species, while more northern regions were characterised by species richness of about half of that value. The combination of ecological models and known threats resulted in the recommendation of ten species as threatened at the national level following the IUCN Red List categories and criteria. This high number of threatened species was anticipated based on the high threat level to amphibians in bordering nations and globally. While the ecology of species in the DPR Korea is still understudied, we argue that species relying on agricultural wetlands such as rice paddies are not under imminent threat due to the enduring presence of extensive agricultural landscapes with low rates of chemical use and mechanisation. The maintenance of such landscapes is a clear benefit to amphibian species, in contrast to more industrialised agricultural landscapes in neighbouring nations. In comparison, the status of species dependent on forested habitats is unclear and threat levels are likely to be higher because of deforestation, as in neighbouring nations.
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Affiliation(s)
- Amaël Borzée
- Laboratory of Animal Behaviour and Conservation, College of Biology and the Environment, Nanjing Forestry University, 159 Longpan Rd, Nanjing 210037, China; (Y.B.); (Y.S.)
- Amphibian Specialist Group, IUCN Species Survival Commission, Toronto, ON L5A, Canada; (J.L.); (L.H.)
| | - Spartak N. Litvinchuk
- Institute of Cytology, Russian Academy of Sciences, Tikhoretsky pr. 4, 194064 St. Petersburg, Russia;
- Department of Zoology and Physiology, Dagestan State University, Gadzhiyev str. 43-a, Makhachkala, 3367000 Dagestan, Russia
| | - Kyongsim Ri
- Department of International Economic Cooperation, Ministry of Land and Environment Protection, Pyongyang, Democratic People’s Republic of Korea
| | - Desiree Andersen
- Interdisciplinary Program of Eco Creative, Ewha Womans University, Seoul 03760, Korea; (D.A.); (S.K.); (S.N.O.); (A.K.)
| | - Tu Yong Nam
- Institute of Zoology, State Academy of Science, Daesong-dong, Daesong District, Pyongyang, Democratic People’s Republic of Korea
| | - Gwang Hyok Jon
- Department of Ecology, State Academy of Science, Daesong-dong, Daesong District, Pyongyang, Democratic People’s Republic of Korea
| | - Ho Song Man
- Department of Ecology, Life Science College, Kim Il Sung University, Ryongnam-dong, Daesong-dong, Daesong District, Pyongyang, Democratic People’s Republic of Korea
| | - Jong Sik Choe
- Department of Ecology, Life Science College, Kim Il Sung University, Ryongnam-dong, Daesong-dong, Daesong District, Pyongyang, Democratic People’s Republic of Korea
| | - Sera Kwon
- Interdisciplinary Program of Eco Creative, Ewha Womans University, Seoul 03760, Korea; (D.A.); (S.K.); (S.N.O.); (A.K.)
| | - Siti N. Othman
- Interdisciplinary Program of Eco Creative, Ewha Womans University, Seoul 03760, Korea; (D.A.); (S.K.); (S.N.O.); (A.K.)
| | - Kevin Messenger
- Herpetology and Applied Conservation Lab, College of Biology and the Environment, Nanjing Forestry University, 159 Longpan Rd, Nanjing 210037, China;
| | - Yoonhyuk Bae
- Laboratory of Animal Behaviour and Conservation, College of Biology and the Environment, Nanjing Forestry University, 159 Longpan Rd, Nanjing 210037, China; (Y.B.); (Y.S.)
- Interdisciplinary Program of Eco Creative, Ewha Womans University, Seoul 03760, Korea; (D.A.); (S.K.); (S.N.O.); (A.K.)
| | - Yucheol Shin
- Laboratory of Animal Behaviour and Conservation, College of Biology and the Environment, Nanjing Forestry University, 159 Longpan Rd, Nanjing 210037, China; (Y.B.); (Y.S.)
| | - Ajoung Kim
- Interdisciplinary Program of Eco Creative, Ewha Womans University, Seoul 03760, Korea; (D.A.); (S.K.); (S.N.O.); (A.K.)
| | - Irina Maslova
- Federal Scientific Center of the East Asia Terrestrial Biodiversity, Far Eastern Branch of Russian Academy of Sciences, 690022 Vladivostok, Russia;
| | - Jennifer Luedtke
- Amphibian Specialist Group, IUCN Species Survival Commission, Toronto, ON L5A, Canada; (J.L.); (L.H.)
- Re:wild, Austin, TX 78746, USA
| | - Louise Hobin
- Amphibian Specialist Group, IUCN Species Survival Commission, Toronto, ON L5A, Canada; (J.L.); (L.H.)
| | - Nial Moores
- Birds Korea, 101-1902, Hyundai I Park, Busan 48559, Korea;
| | | | - Felix Glenk
- Hanns Seidel Foundation, Seoul 04419, Korea; (B.S.); (F.G.)
| | - Yikweon Jang
- Department of Life Sciences and Division of EcoScience, Ewha Womans University, Seoul 03760, Korea;
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14
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Taylor DL, Fehon MM. Blue crab ( Callinectes sapidus) population structure in southern New England tidal rivers: Patterns of shallow-water, unvegetated habitat use and quality. ESTUARIES AND COASTS : JOURNAL OF THE ESTUARINE RESEARCH FEDERATION 2021; 44:1320-1343. [PMID: 34149332 PMCID: PMC8210731 DOI: 10.1007/s12237-020-00867-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Revised: 10/26/2020] [Accepted: 10/30/2020] [Indexed: 06/12/2023]
Abstract
The blue crab, Callinectes sapidus, has a broad geographic distribution encompassing coastal waters of the eastern United States and Gulf of Mexico, but intraspecific patterns of habitat use and quality are lacking at northern latitudes. This study examined the population structure of blue crabs in the Seekonk and Taunton Rivers (Rhode Island and Massachusetts, USA): two tidally influenced rivers contiguous with the Narragansett Bay Estuary and dominated by shallow-water, unvegetated habitats. Crabs were collected fortnightly from May through August (2012-2016), and abundance- and growth-based metrics were used to assess riverine habitat use and quality. These metrics were also analyzed with respect to crab life history traits and in situ abiotic conditions to elucidate patterns of habitat selection throughout ontogeny. Crabs measuring 8 to 185 mm carapace width (CW; n = 2,577) were collected, and two distinct age-classes occupied the rivers during the spring and summer (maximum abundance ~ 5 crabs/10 m2). The younger age-0+ cohort was numerically dominant (~ 88% of total catch) and comprised of male and juvenile female crabs (mean ± SD abundance = 0.28 ± 0.26 males/10 m2 and 0.14 ± 0.12 juvenile females/10 m2). Males accounted for the majority of age-1+ crabs (~ 83% of cohort), yet sexually mature females were also observed (9% of cohort; mean ± SD abundance = 0.04 ± 0.06 adult females/100 m2; size at 50% maturity ± 95 CI = 129.0 ± 0.2 mm CW). Crabs were spatially segregated along a salinity gradient with males and juvenile females prevalent in oligohaline waters (upper river salinity ~ 5 ppt) and adult females mainly concentrating in higher salinity areas (mid- and lower river salinity ~ 11-21 ppt). Seasonal and interannual patterns in crab abundance also differed by sex and ontogeny. Peak catches of males and juvenile females occurred during the spring and mid-summer, and annual abundances were positively related to dissolved oxygen (DO) concentrations. In contrast, mature females were most abundant during August and years with elevated water temperatures. The absolute and relative growth rates of juvenile crabs equaled 0.9 ± 0.3 mm CW/day and 1.5 ± 0.6 % CW/day, respectively, and were directly related to DO levels. A synoptic examination of crab abundance and growth across a broad geographic range indicated that shallow-water, unvegetated habitats presently serve as functional nurseries in southern New England tidal rivers.
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Affiliation(s)
- David L. Taylor
- corresponding author: Telephone: (401) 254-3759, Fax: (401) 254-3310,
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15
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Tuckett QM, Deacon AE, Fraser D, Lyons TJ, Lawson KM, Hill JE. Unstable intraguild predation causes establishment failure of a globally invasive species. Ecology 2021; 102:e03411. [PMID: 34028015 DOI: 10.1002/ecy.3411] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Revised: 12/29/2020] [Accepted: 02/22/2021] [Indexed: 11/06/2022]
Abstract
Biotic resistance is often posited, but rarely known, to be the cause of invasion failure. Competition and predation are the most frequently identified processes that may prevent or limit the establishment of nonnative species. Interactions between nonnative and native species that involve intraguild predation (IGP) are very common in nature, although theory predicts most IGP systems should be unstable and lead to extinction. If this prediction is true, the frequency of invasion failures due to IGP may be underappreciated because of their fleeting nature and, thus, studies of unstable IGP systems are lacking, despite the opportunities they offer for understanding the factors affecting their unstable dynamics. We investigated a failed invasion involving an IGP relationship. In Florida, the guppy (Poecilia reticulata), a worldwide invader, fails to establish in the presence of eastern mosquitofish (Gambusia holbrooki). We tested whether and how resident mosquitofish cause guppy invasion failure using replicated mesocosm and aquarium trials. Both the predator and competitor components of the IGP relationship were strongly asymmetrical, with large impacts on guppies. We identified two effects, direct consumption of neonates and aggressive interference competition, that limited survival and recruitment. The highly unstable nature of this IGP relationship is the primary cause of the failure of the guppy to establish in Florida. Our study shows that the transient nature of an ephemeral IGP relationship can yield important insights into the underlying causes of invasion failure, including the role of strong biotic resistance.
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Affiliation(s)
- Quenton M Tuckett
- Tropical Aquaculture Laboratory, Program in Fisheries and Aquatic Sciences, School of Forest Resources and Conservation, University of Florida, Ruskin, Florida, 33570, USA
| | - Amy E Deacon
- Department of Life Sciences, The University of the West Indies, St Augustine, Trinidad and Tobago
| | - Douglas Fraser
- Department of Biology, Siena College, Loudonville, New York, 12211, USA
| | - Timothy J Lyons
- Tropical Aquaculture Laboratory, Program in Fisheries and Aquatic Sciences, School of Forest Resources and Conservation, University of Florida, Ruskin, Florida, 33570, USA
| | - Katelyn M Lawson
- Department of Biological Sciences, Auburn University, Auburn, Alabama, 36849, USA
| | - Jeffrey E Hill
- Tropical Aquaculture Laboratory, Program in Fisheries and Aquatic Sciences, School of Forest Resources and Conservation, University of Florida, Ruskin, Florida, 33570, USA
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Christianson KA, Eggleston DB. Testing ecological theories in the Anthropocene: alteration of succession by an invasive marine species. Ecosphere 2021. [DOI: 10.1002/ecs2.3471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Affiliation(s)
- Kayla A. Christianson
- Department of Marine, Earth, and Atmospheric Sciences, Center for Marine Sciences and Technology North Carolina State University Morehead City North Carolina28557USA
| | - David B. Eggleston
- Department of Marine, Earth, and Atmospheric Sciences, Center for Marine Sciences and Technology North Carolina State University Morehead City North Carolina28557USA
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Devegili AM, Lescano MN, Gianoli E, Farji-Brener AG. Evidence of indirect biotic resistance: native ants decrease invasive plant fitness by enhancing aphid infestation. Oecologia 2021; 196:607-618. [PMID: 33616724 DOI: 10.1007/s00442-021-04874-2] [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: 05/20/2020] [Accepted: 02/03/2021] [Indexed: 11/25/2022]
Abstract
The biotic resistance hypothesis asserts that native species may hinder the invasion of exotic species, which can occur either directly or indirectly by influencing interactions between exotic and local species. Aphid-tending ants may play a key role in the indirect biotic resistance to plant invasion. Ants may protect aphids, thus increasing their negative effect on exotic plants, but may also deter chewing herbivores, thus benefiting exotic plants. We studied native aphid-tending ants (Dorymyrmex tener, Camponotus distinguendus, and Dorymyrmex richteri) on exotic nodding thistles (Carduus thoermeri), which are attacked by thistle aphids (Brachycaudus cardui) and thistle-head weevils (Rhinocyllus conicus). We evaluated the impact of ants, aphids, and weevils on thistle seed set. We compared ant species aggressiveness towards aphid predators and weevils and performed ant-exclusion experiments to determine the effects of ants on aphid predators and weevils. We analysed whether ant species affected thistle seed set through their effects on aphids and/or weevils. The ant D. tener showed the most aggressive behaviour towards aphid predators and weevils. Further, D. tener successfully removed aphid predators from thistles but did not affect weevils. Excluding D. tener from thistles increased seed set. Analyses supported a negative indirect pathway between the aggressive D. tener and thistle seed set through aphid populations, while the other ant species showed no indirect effects on thistle reproduction. Therefore, aggressive aphid-tending ants may enhance biotic resistance by increasing aphid infestation on exotic invasive plants. This study highlights the importance of indirect biotic resistance in modulating the success of invasive species.
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Affiliation(s)
- Andrés M Devegili
- Laboratorio de Investigaciones en Hormigas (LIHO), Laboratorio Ecotono, INIBIOMA (CONICET-UNComa), Pasaje Gutiérrez 1125, C.P: 8400, S.C. de Bariloche, Río Negro, Argentina.
| | - María N Lescano
- Laboratorio de Investigaciones en Hormigas (LIHO), Laboratorio Ecotono, INIBIOMA (CONICET-UNComa), Pasaje Gutiérrez 1125, C.P: 8400, S.C. de Bariloche, Río Negro, Argentina
| | - Ernesto Gianoli
- Departamento de Biología, Universidad de La Serena, La Serena, Chile.,Departamento de Botánica, Universidad de Concepción, Concepción, Chile
| | - Alejandro G Farji-Brener
- Laboratorio de Investigaciones en Hormigas (LIHO), Laboratorio Ecotono, INIBIOMA (CONICET-UNComa), Pasaje Gutiérrez 1125, C.P: 8400, S.C. de Bariloche, Río Negro, Argentina
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18
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Kleitou P, Crocetta F, Giakoumi S, Giovos I, Hall-Spencer JM, Kalogirou S, Kletou D, Moutopoulos DK, Rees S. Fishery reforms for the management of non-indigenous species. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2021; 280:111690. [PMID: 33246748 DOI: 10.1016/j.jenvman.2020.111690] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Revised: 11/13/2020] [Accepted: 11/16/2020] [Indexed: 06/12/2023]
Abstract
Marine ecosystems are undergoing major transformations due to the establishment and spread of Non-Indigenous Species (NIS). Some of these organisms have adverse effects, for example by reducing biodiversity and causing ecosystem shifts. Others have upsides, such as benefits to fisheries or replacing lost ecological functions and strengthening biogenic complexity. Stopping the spread of NIS is virtually impossible and so the societal challenge is how to limit the socioeconomic, health, and ecological risks, and sustainably exploit the benefits provided by these organisms. We propose a move away from the notion that NIS have only negative effects, and suggest a turn towards an Ecosystem-Based Fishery Management approach for NIS (EBFM-NIS) in the Mediterranean Sea, the world's most invaded marine region. A structured, iterative, and adaptive framework that considers the range of costs and benefits to ecosystems, ecosystem services, and fisheries is set out to determine whether NIS stocks should be managed using sustainable or unsustainable exploitation. We propose fishery reforms such as multiannual plans, annual catch limits, technical measures for sustainable exploitation, and legitimization of unlimited fishing of selected NIS and introduction of a radical new license for NIS fishing for unsustainable exploitation. Depending on local conditions, investment strategies can be included within the EBFM-NIS framework to protect/enhance natural assets to improve ecosystem resilience against NIS, as well as fishery assets to improve the performance of NIS fisheries. Examples of the former include the enhancement of Marine Protected Areas, harvesting of invasive NIS within MPAs, and protection of overfished predators and key species. Examples of the latter include market promotion and valorisation of NIS products, development of novel NIS products, and innovative/alternative NIS fishing such as fishery-related tourism ('pescatourism'). The application of the suggested EBFM-NIS would create jobs, protect and enhance ecosystem services, and help to meet the United Nations Sustainable Development Goal 14: Conserve and sustainably use the oceans, seas, and marine resources for sustainable development.
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Affiliation(s)
- Periklis Kleitou
- School of Biological and Marine Sciences, University of Plymouth PL4 8AA, Plymouth, United Kingdom; Marine & Environmental Research (MER) Lab Ltd, 202 Amathountos Avenue, Marina Gardens, Block B, Limassol, 4533, Cyprus.
| | - Fabio Crocetta
- Department of Integrative Marine Ecology, Stazione Zoologica Anton Dohrn, Villa Comunale, I-80121, Napoli, Italy.
| | - Sylvaine Giakoumi
- Centre for Biodiversity and Conservation Science, School of Biological Sciences, The University of Queensland, Brisbane, Queensland, Australia.
| | - Ioannis Giovos
- Marine & Environmental Research (MER) Lab Ltd, 202 Amathountos Avenue, Marina Gardens, Block B, Limassol, 4533, Cyprus; iSea, Environmental Organisation for the Preservation of the Aquatic Ecosystems, Thessaloniki, Greece.
| | - Jason M Hall-Spencer
- School of Biological and Marine Sciences, University of Plymouth PL4 8AA, Plymouth, United Kingdom; Shimoda Marine Research Center, University of Tsukuba, Shizuoka, 415-0025, Japan.
| | - Stefanos Kalogirou
- Hellenic Centre for Marine Research, Hydrobiological Station of Rhodes, Rhodes, Greece.
| | - Demetris Kletou
- Marine & Environmental Research (MER) Lab Ltd, 202 Amathountos Avenue, Marina Gardens, Block B, Limassol, 4533, Cyprus.
| | - Dimitrios K Moutopoulos
- Department of Animal Production, Fisheries & Aquaculture, University of Patras, Mesolonghi, Greece.
| | - Siân Rees
- School of Biological and Marine Sciences, University of Plymouth PL4 8AA, Plymouth, United Kingdom.
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19
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López DP, Freestone AL. History of co‐occurrence shapes predation effects on functional diversity and structure at low latitudes. Funct Ecol 2020. [DOI: 10.1111/1365-2435.13725] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Diana P. López
- Department of Biology Temple University Philadelphia PA USA
| | - Amy L. Freestone
- Department of Biology Temple University Philadelphia PA USA
- Smithsonian Environmental Research Center Edgewater MD USA
- Smithsonian Tropical Research Institute Panama City Panama
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20
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Barrett LT, Swearer SE, Dempster T. Native predator limits the capacity of an invasive seastar to exploit a food-rich habitat. MARINE ENVIRONMENTAL RESEARCH 2020; 162:105152. [PMID: 32956970 DOI: 10.1016/j.marenvres.2020.105152] [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: 07/23/2020] [Revised: 09/03/2020] [Accepted: 09/10/2020] [Indexed: 06/11/2023]
Abstract
Biodiverse ecosystems are sometimes inherently resistant to invasion, but environmental change can facilitate invasion by disturbing natural communities and providing resources that are underutilised by native species. In such cases, sufficiently abundant native predators may help to limit invasive population growth. We studied native and invasive seastars feeding under two mussel aquaculture sites in south-east Australia, to determine whether food-rich farm habitats are likely to be reproductive hotspots for the invasive seastar (Asterias amurensis) and whether the larger native seastar (Coscinasterias muricata) reduces the value of the farms for the invader. We found that invaders were not significantly more abundant inside the farms, despite individuals residing within the farms having higher body condition metrics and reproductive investment than those outside. By contrast, the native seastar was 25 × more abundant inside the two farms than outside. We observed several intraguild predation events and an absence of small invaders at the farms despite reports of high larval recruitment to these environments, consistent with some level of biotic control by the native predator. A laboratory choice experiment showed that invaders were strongly attracted to mussels except when the native predator was present. Together, these findings indicate that a combination of predation and predator evasion may play a role in reducing the value of food-rich anthropogenic habitats for this invasive species.
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Affiliation(s)
- Luke T Barrett
- Sustainable Aquaculture Laboratory - Temperate and Tropical (SALTT), School of BioSciences, University of Melbourne, Parkville 3010 Victoria, Australia; National Centre for Coasts and Climate (NCCC), University of Melbourne, Parkville 3010 Victoria, Australia.
| | - Stephen E Swearer
- National Centre for Coasts and Climate (NCCC), University of Melbourne, Parkville 3010 Victoria, Australia
| | - Tim Dempster
- Sustainable Aquaculture Laboratory - Temperate and Tropical (SALTT), School of BioSciences, University of Melbourne, Parkville 3010 Victoria, Australia
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Griffen BD, Bailey J, Carver J, Vernier A, DiNuzzo ER, Anderson L, Meidell M, Potter B. Mechanisms of possible self-limitation in the invasive Asian shore crab Hemigrapsus sanguineus. Sci Rep 2020; 10:16908. [PMID: 33037256 PMCID: PMC7547685 DOI: 10.1038/s41598-020-74053-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Accepted: 09/25/2020] [Indexed: 11/09/2022] Open
Abstract
Population sizes of invasive species are commonly characterized by boom-bust dynamics, and self-limitation via resource depletion is posited as one factor leading to these boom-bust changes in population size. Yet, while this phenomenon is well-documented in plants, few studies have demonstrated that self-limitation is possible for invasive animal species, especially those that are mobile. Here we examined the invasive Asian shore crab Hemigrapsus sanguineus, a species that reached very high abundances throughout invaded regions of North America, but has recently declined in many of these same regions. We examined the relationship between diet, energy storage, reproduction, and growth in crabs collected from the New Hampshire coast. We show that energy storage and reproduction both increase with diet quality, while growth declines with diet quality. These results suggest that self-limitation may be a contributing factor to the recent declines of H. sanguineus at sites where this invader was once much more abundant. Further, these results suggest a diet-associated tradeoff in energy allocation to different vital rates, with a focus on reproduction when high quality resources are consumed, and a focus instead on growth when poor quality resources are consumed.
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Affiliation(s)
- Blaine D Griffen
- Biology Department, Brigham Young University, Provo, UT, 84662, USA.
| | - James Bailey
- Biology Department, Brigham Young University, Provo, UT, 84662, USA
| | - Jade Carver
- Biology Department, Brigham Young University, Provo, UT, 84662, USA
| | - Ashley Vernier
- Biology Department, Brigham Young University, Provo, UT, 84662, USA
| | | | - Lars Anderson
- Biology Department, Brigham Young University, Provo, UT, 84662, USA
| | - Morgan Meidell
- Biology Department, Brigham Young University, Provo, UT, 84662, USA
| | - Ben Potter
- Biology Department, Brigham Young University, Provo, UT, 84662, USA
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Bolius S, Morling K, Wiedner C, Weithoff G. Genetic Identity and Herbivory Drive the Invasion of a Common Aquatic Microbial Invader. Front Microbiol 2020; 11:1598. [PMID: 32754141 PMCID: PMC7370804 DOI: 10.3389/fmicb.2020.01598] [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: 12/31/2019] [Accepted: 06/18/2020] [Indexed: 11/21/2022] Open
Abstract
Despite the increasing number of species invasions, the factors driving invasiveness are still under debate. This is particularly the case for “invisible” invasions by aquatic microbial species. Since in many cases only a few individuals or propagules enter a new habitat, their genetic variation is low and might limit their invasion success, known as the genetic bottleneck. Thus, a key question is, how genetic identity and diversity of invading species influences their invasion success and, subsequently, affect the resident community. We conducted invader-addition experiments using genetically different strains of the globally invasive, aquatic cyanobacterium Raphidiopsis raciborskii (formerly: Cylindrospermopsis raciborskii) to determine the role of invader identity and genetic diversity (strain richness) at four levels of herbivory. We tested the invasion success of solitary single strain invasions against the invader genetic diversity, which was experimentally increased up to ten strains (multi-strain populations). By using amplicon sequencing we determined the strain-specific invasion success in the multi-strain treatments and compared those with the success of these strains in the single-strain treatments. Furthermore, we tested for the invasion success under different herbivore pressures. We showed that high grazing pressure by a generalist herbivore prevented invasion, whereas a specialist herbivore enabled coexistence of consumer and invader. We found a weak effect of diversity on invasion success only under highly competitive conditions. When invasions were successful, the magnitude of this success was strain-specific and consistent among invasions performed with single-strain or multi-strain populations. A strain-specific effect was also observed on the resident phytoplankton community composition, highlighting the strong role of invader genetic identity. Our results point to a strong effect of the genetic identity on the invasion success under low predation pressure. The genetic diversity of the invader population, however, had little effect on invasion success in our study, in contrast to most previous findings. Instead, it is the interaction between the consumer abundance and type together with the strain identity of the invader that defined invasion success. This study underlines the importance of strain choice in invasion research and in ecological studies in general.
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Affiliation(s)
- Sarah Bolius
- Department Ecology and Ecosystem Modelling, University of Potsdam, Potsdam, Germany
| | - Karoline Morling
- Department of Aquatic Environmental Engineering, Karlsruhe Institute of Technology, Karlsruhe, Germany
| | | | - Guntram Weithoff
- Department Ecology and Ecosystem Modelling, University of Potsdam, Potsdam, Germany.,Berlin-Brandenburg Institute of Advanced Biodiversity Research (BBIB), Berlin, Germany
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Hernández-Brito D, Blanco G, Tella JL, Carrete M. A protective nesting association with native species counteracts biotic resistance for the spread of an invasive parakeet from urban into rural habitats. Front Zool 2020; 17:13. [PMID: 32411270 PMCID: PMC7206781 DOI: 10.1186/s12983-020-00360-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Accepted: 04/22/2020] [Indexed: 02/07/2023] Open
Abstract
Background Non-native species are often introduced in cities, where they take advantage of microclimatic conditions, resources provided by humans, and competitor/predator release to establish and proliferate. However, native communities in the surrounding rural or natural areas usually halt their spread through biotic resistance, mainly via top-down regulative processes (predation pressure). Here, we show an unusual commensal interaction between exotic and native bird species that favours the spread of the former from urban to rural habitats. Results We show how Monk parakeets Myiopsitta monachus, an invasive species often introduced in cities worldwide, associated for breeding with a much larger, native species (the white stork Ciconia ciconia) to reduce predation risk in central Spain, thus allowing their colonization of rural areas. Parakeets selected stork nests close to conspecifics and where breeding raptors were less abundant. Parakeets always flushed when raptors approached their nests when breeding alone, but stayed at their nests when breeding in association with storks. Moreover, when storks abandoned a nest, parakeets abandoned it in the following year, suggesting that storks actually confer protection against predators. Conclusions Our results show how a protective-nesting association between invasive and native species can counteract biotic resistance to allow the spread of an invasive species across non-urban habitats, where they may become crop pests. Monk parakeet populations are now growing exponentially in several cities in several Mediterranean countries, where they coexist with white storks. Therefore, management plans should consider this risk of spread into rural areas and favour native predators as potential biological controllers.
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Affiliation(s)
- Dailos Hernández-Brito
- 1Department of Conservation Biology, Estación Biológica de Doñana (CSIC), Avda. Américo Vespucio, 41092 Sevilla, Spain
| | - Guillermo Blanco
- 2Department of Evolutionary Ecology, Museo Nacional de Ciencias Naturales (CSIC), C/ José Gutiérrez Abascal 2, 28006 Madrid, Spain
| | - José L Tella
- 1Department of Conservation Biology, Estación Biológica de Doñana (CSIC), Avda. Américo Vespucio, 41092 Sevilla, Spain
| | - Martina Carrete
- 3Department of Physical, Chemical and Natural Systems, University Pablo de Olavide, Ctra. de Utrera km. 1, 41013 Sevilla, Spain
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Skein L, Alexander ME, Robinson TB. Co-occurring predators increase biotic resistance against an invasive prey. MARINE ENVIRONMENTAL RESEARCH 2020; 157:104929. [PMID: 32275511 DOI: 10.1016/j.marenvres.2020.104929] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Revised: 02/21/2020] [Accepted: 02/23/2020] [Indexed: 06/11/2023]
Abstract
The presence of multiple predators can lead to variation in predator behavior and ultimately altered risk for shared prey. This concept has seldom been accounted for in studies that consider predator-driven biotic resistance from native marine predators against invasive prey. This study compared the prey selection of whelks and rock lobsters when co-occurring and when foraging in isolation. When in isolation, both predators preferred the native mussel Choromytilus meridionalis, regardless of the abundance of alternative prey. However, when co-occurring, predation risk for all prey species, including the invasive mussel Semimytilus algosus, increased. This was largely driven by greater variation in prey selection by rock lobsters in the presence of whelks. This indicates that predatory efforts from co-occurring predators can result in stronger predation pressure on invasive prey than would be recognized if predators were assessed in isolation.
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Affiliation(s)
- Lisa Skein
- Department of Botany and Zoology, Centre for Invasion Biology, Stellenbosch University, Private Bag X1, Natural Sciences Building, Merriman Avenue, Stellenbosch, Matieland, 7602, South Africa
| | - Mhairi E Alexander
- Department of Botany and Zoology, Centre for Invasion Biology, Stellenbosch University, Private Bag X1, Natural Sciences Building, Merriman Avenue, Stellenbosch, Matieland, 7602, South Africa; Institute of Biomedical and Environmental Health Research (IBEHR), School of Health and Life Sciences, University of the West of Scotland, High Street, Paisley, PA1 2BE, UK
| | - Tamara B Robinson
- Department of Botany and Zoology, Centre for Invasion Biology, Stellenbosch University, Private Bag X1, Natural Sciences Building, Merriman Avenue, Stellenbosch, Matieland, 7602, South Africa.
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South J, Madzivanzira TC, Tshali N, Measey J, Weyl OLF. In a Pinch: Mechanisms Behind Potential Biotic Resistance Toward Two Invasive Crayfish by Native African Freshwater Crabs. Front Ecol Evol 2020. [DOI: 10.3389/fevo.2020.00072] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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McNicol CM, Bavin D, Bearhop S, Ferryman M, Gill R, Goodwin CED, MacPherson J, Silk MJ, McDonald RA. Translocated native pine martens
Martes martes
alter short‐term space use by invasive non‐native grey squirrels
Sciurus carolinensis. J Appl Ecol 2020. [DOI: 10.1111/1365-2664.13598] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | - David Bavin
- Vincent Wildlife TrustBronsil Courtyard Eastnor, Ledbury UK
| | - Stuart Bearhop
- Centre for Ecology and Conservation University of Exeter Penryn UK
| | | | - Robin Gill
- Forest Research Alice Holt Lodge Farnham UK
| | | | | | - Matthew J. Silk
- Environment and Sustainability Institute University of Exeter Penryn UK
- Centre for Ecology and Conservation University of Exeter Penryn UK
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Geographic and genetic variation in susceptibility of Butomus umbellatus to foliar fungal pathogens. Biol Invasions 2020. [DOI: 10.1007/s10530-019-02109-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Abstract
Carcinus maenas (the “shore crab” or “European green crab”) is a very proficient invader (considered to be one of the world’s 100 worst invaders by the IUCN) due to its phenotypic plasticity, wide temperature and salinity tolerance, and an extensive omnivorous diet. Native to Atlantic Europe, it has established two well-studied nonindigenous populations in the northwestern Atlantic and northeastern Pacific and less-studied populations in Australia, Argentina and South Africa. Green crabs are eurythermal and euryhaline as adults, but they are limited to temperate coastlines due to more restrictive temperature requirements for breeding and larval development. They cannot tolerate wave-swept open shores so are found in wave-protected sheltered bays, estuaries and harbors. Carcinus maenas has been the subject of numerous papers, with over 1000 published in the past decade. This review provides an up-to-date account of the current published information on the life history and population dynamics of this very important species, including genetic differentiation, habitat preferences, physical parameter tolerances, reproduction and larval development, sizes of crabs, densities of populations, sex ratios, ecosystem dynamics and ecological impacts in the various established global populations of green crabs.
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Uyà M, Bulleri F, Wright JT, Gribben PE. Facilitation of an invader by a native habitat-former increases along interacting gradients of environmental stress. Ecology 2019; 101:e02961. [PMID: 31863455 DOI: 10.1002/ecy.2961] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Revised: 09/23/2019] [Accepted: 11/11/2019] [Indexed: 01/09/2023]
Abstract
Native habitat-forming species can facilitate invasion by reducing environmental stress or consumer pressure. However, the intensity of one stressor along a local gradient may differ when expanding the scale of observation to encompass major variations in background environmental conditions. In this study, we determined how facilitation of the invasive porcelain crab, Petrolisthes elongatus, by the native tube-forming serpulid, Galeolaria caespitosa, varied with environmental gradients at local (tidal height) and larger (wave exposure) spatial scales. G. caespitosa constructs a complex calcareous matrix on the underside of intertidal boulders and we predicted that its positive effects on P. elongatus density would increase in intensity with shore height and be stronger at wave-sheltered than wave-exposed locations. To test these predictions, we conducted two experiments. First, we determined the effects of serpulid presence (boulders with live or dead serpulid matrix vs. bare boulders) at six shore heights that covered the intertidal distribution of P. elongatus. Second, we determined the effects of serpulid presence (present vs. absent), shore height (high vs. low) and wave exposure (sheltered vs. exposed) on crabs across six locations within the invaded range in northern Tasmania, Australia. In Experiment 1, the presence of serpulids (either dead or alive) enhanced P. elongatus densities at all shore heights, with facilitation intensity (as determined by a relative interaction index; RII) tending to increase with shore height. In Experiment 2, serpulids facilitated P. elongatus across shore heights and wave exposures, although crab densities were lower at high shore levels of wave-sheltered locations. However, the intensity of crab facilitation by serpulids was greater on wave-sheltered than on wave-exposed shores, but only at the high shore level. This study demonstrates that local effects of native habitat-formers on invasive species are dependent on prevailing environmental conditions at larger spatial scales and that, under more stressful conditions, invaders become increasingly reliant on positive interactions with native habitat-formers. Increased strength of local-scale facilitation by native species, dampening broader scale variations in environmental stressors, could enhance the ability of invasive species to establish self-sustaining populations in the invaded range.
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Affiliation(s)
- Marc Uyà
- Dipartimento di Biologia, Università di Pisa, Via Derna 1, 56126, Pisa, Italy.,Centre for Marine Science and Innovation, School of Biological, Earth and Environmental Sciences, University of New South Wales, Sydney, 2052, New South Wales, Australia
| | - Fabio Bulleri
- Dipartimento di Biologia, Università di Pisa, Via Derna 1, 56126, Pisa, Italy.,CoNISMa, Consorzio Nazionale Interuniversitario per le Scienze del Mare, Piazzale Flaminio 9, 00196, Roma, Italy
| | - Jeffrey T Wright
- Institute for Marine and Antarctic Studies, University of Tasmania, Private Bag 129, Hobart, 7001, Australia
| | - Paul E Gribben
- Centre for Marine Science and Innovation, School of Biological, Earth and Environmental Sciences, University of New South Wales, Sydney, 2052, New South Wales, Australia.,Sydney Institute of Marine Science, 19 Chowder Bay Road, Mosman, 2088, New South Wales, Australia
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Johnson DS, Crowley C, Longmire K, Nelson J, Williams B, Wittyngham S. The fiddler crab, Minuca pugnax, follows Bergmann's rule. Ecol Evol 2019; 9:14489-14497. [PMID: 31938535 PMCID: PMC6953695 DOI: 10.1002/ece3.5883] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2019] [Revised: 10/25/2019] [Accepted: 10/28/2019] [Indexed: 11/29/2022] Open
Abstract
Bergmann's rule predicts that organisms at higher latitudes are larger than ones at lower latitudes. Here, we examine the body size pattern of the Atlantic marsh fiddler crab, Minuca pugnax (formerly Uca pugnax), from salt marshes on the east coast of the United States across 12 degrees of latitude. We found that M. pugnax followed Bergmann's rule and that, on average, crab carapace width increased by 0.5 mm per degree of latitude. Minuca pugnax body size also followed the temperature-size rule with body size inversely related to mean water temperature. Because an organism's size influences its impact on an ecosystem, and M. pugnax is an ecosystem engineer that affects marsh functioning, the larger crabs at higher latitudes may have greater per-capita impacts on salt marshes than the smaller crabs at lower latitudes.
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Affiliation(s)
| | | | | | | | | | - Serina Wittyngham
- Virginia Institute of Marine ScienceWilliam & MaryGloucester PointVAUSA
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Benning JW, Moeller DA. Maladaptation beyond a geographic range limit driven by antagonistic and mutualistic biotic interactions across an abiotic gradient. Evolution 2019; 73:2044-2059. [PMID: 31435931 DOI: 10.1111/evo.13836] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2019] [Revised: 07/18/2019] [Accepted: 07/24/2019] [Indexed: 01/22/2023]
Abstract
Species' geographic range limits often result from maladaptation to the novel environments beyond the range margin. However, we rarely know which aspects of the n-dimensional environment are driving this maladaptation. Especially of interest is the influence of abiotic versus biotic factors in delimiting species' distributions. We conducted a 2-year reciprocal transplant experiment involving manipulations of the biotic environment to explore how spatiotemporal gradients in precipitation, fatal mammalian herbivory, and pollination affected lifetime fitness within and beyond the range of the California annual plant, Clarkia xantiana ssp. xantiana. In the first, drier year of the experiment, fitness outside the range edge was limited mainly by low precipitation, and there was some evidence for local adaptation within the range. In the second, wetter year, we did not observe abiotic limitations to plant fitness outside the range; instead biotic interactions, especially herbivory, limited fitness outside the range. Together, protection from herbivory and supplementation of pollen resulted in three- to sevenfold increases in lifetime fitness outside the range margin in the abiotically benign year. Overall, our work demonstrates the importance of biotic interactions, particularly as they interact with the abiotic environment, in determining fitness beyond geographic range boundaries.
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Affiliation(s)
- John W Benning
- Department of Plant and Microbial Biology, University of Minnesota, Saint Paul, Minnesota, 55108
| | - David A Moeller
- Department of Plant and Microbial Biology, University of Minnesota, Saint Paul, Minnesota, 55108
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Papacostas KJ, Freestone AL. Multi-trophic native and non-native prey naïveté shape marine invasion success. PLoS One 2019; 14:e0221969. [PMID: 31490995 PMCID: PMC6730852 DOI: 10.1371/journal.pone.0221969] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2019] [Accepted: 08/19/2019] [Indexed: 11/13/2022] Open
Abstract
Invasive predators have caused rapid declines in many native prey species across the globe. Predator invasion success may be attributed to prey naïveté, or the absence of anti-predator behavior between native and non-native species. An understanding of the effects of naïveté at different timescales since introduction and across multiple trophic levels is lacking, however, particularly in marine systems. Given the central role of trophic interactions in invasion dynamics, this knowledge gap limits the ability to predict high impact predator invasions. Naïveté was examined across three trophic levels of marine invertebrates: a native basal prey (hard clam), two non-native intermediate predators (the recently-introduced Asian shore crab and the long-established European green crab), a native intermediate predator (juvenile blue crabs), and a native top predator (adult blue crab). We hypothesized that naïveté would be more pronounced in trophic interactions involving the recently-introduced non-native predator in comparison to the long-established non-native and native intermediate predators. We further hypothesized that the recently-introduced intermediate predator would both benefit from naïveté of the native basal prey and be hindered by higher mortality through its own naïveté to the native top predator. To test these hypotheses, three laboratory experiments and a field experiment were used. Consistent with our hypotheses, basal prey naïveté was most pronounced with the recently-introduced intermediate predator, and this increased the predator’s foraging success. This recently-introduced intermediate predator, however, exhibited an ineffective anti-predator response to the native top predator, and was also preyed upon more in the field than its long-established and native counterparts. Therefore, despite direct benefits from basal prey naïveté, the recently-introduced intermediate predator’s naïveté to its own predators may limit its invasion success. These results highlight the importance of a multi-trophic perspective on predator-prey dynamics to more fully understand the consequences of naïveté in invasion biology.
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Affiliation(s)
- Katherine J. Papacostas
- Department of Biology, Temple University, Philadelphia, PA, United States of America
- * E-mail:
| | - Amy L. Freestone
- Department of Biology, Temple University, Philadelphia, PA, United States of America
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Giakoumi S, Pey A, Thiriet P, Francour P, Guidetti P. Patterns of predation on native and invasive alien fish in Mediterranean protected and unprotected areas. MARINE ENVIRONMENTAL RESEARCH 2019; 150:104792. [PMID: 31557709 DOI: 10.1016/j.marenvres.2019.104792] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Revised: 09/13/2019] [Accepted: 09/17/2019] [Indexed: 06/10/2023]
Abstract
Worldwide, the loss of predatory fish due to overexploitation has altered the structure of native communities and caused ecosystem shifts. Ecosystems deprived of high-level predators may be more vulnerable to invasive alien species as the latter are subject to reduced predation control. Marine protected areas (MPAs), and particularly no-take reserves where fishing is banned, can be effective tools for the restoration of predatory relationships within their boundaries. We explored whether the restoration of high-level predatory fish populations within Mediterranean MPAs can exert top-down control on alien fish. Fish tethering experiments, including native (Sardina pilchardus, Boops boops) and alien (Siganus rivulatus) dead specimens, were conducted to quantify predation within the no-take zones of three MPAs and in unprotected areas, and to assess potential differences in predation rates and prey type preferences. A subsample of experimental units was filmed to document predation events and related fish behaviour. More high-level predators interacted with the tethered fish inside the MPAs than in unprotected areas. Yet we did not find significant differences in the consumption of alien or native fishes between MPAs and unprotected areas. The native S. pilchardus was consumed more in comparison to the other tethered fishes, regardless of protection status and location. Interestingly, the alien S. rivulatus was consumed by native predators in the western Mediterranean locations where this alien fish is not established. Despite its limitations, our study provides evidence on the ability of some native predators to feed on and potentially control certain alien species without requiring 'adaptive' time-lag periods.
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Affiliation(s)
- Sylvaine Giakoumi
- Université Côte d'Azur, CNRS, UMR 7035 ECOSEAS, Parc Valrose, 28 Avenue Valrose, 06108, Nice, France; ARC Centre of Excellence for Environmental Decisions, School of Biological Sciences, The University of Queensland, Brisbane, Queensland, Australia.
| | - Alexis Pey
- Université Côte d'Azur, CNRS, UMR 7035 ECOSEAS, Parc Valrose, 28 Avenue Valrose, 06108, Nice, France; THALASSA Marine research & Environmental awareness, 17 rue Gutenberg, 06000, Nice, France
| | - Pierre Thiriet
- Muséum National d'Histoire Naturelle, UMR 7208 BOREA, Station Marine de Dinard - CRESCO, 38 Rue du Port Blanc, 35800, Dinard, France; Research Unit Biology of Aquatic Organisms and Ecosystems (UMR 7208 BOREA) Sorbonne Universités, MNHN, UPMC, UCN, UA, CNRS, IRD - 43 Rue Cuvier, CP26, 75005, Paris, France; UMS 2006 Patrimoine Naturel - Muséum National d'Histoire Naturelle, CRESCO, 38 Rue du Port Blanc, 35800, Dinard, France
| | - Patrice Francour
- Université Côte d'Azur, CNRS, UMR 7035 ECOSEAS, Parc Valrose, 28 Avenue Valrose, 06108, Nice, France
| | - Paolo Guidetti
- Université Côte d'Azur, CNRS, UMR 7035 ECOSEAS, Parc Valrose, 28 Avenue Valrose, 06108, Nice, France; Consorzio Interuniversitario per le Scienze del Mare, CoNISMa, Piazzale Flaminio 9, 00196, Rome, Italy
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Broadley HJ, Kula RR, Boettner GH, Andersen JC, Griffin BP, Elkinton JS. Recruitment of native parasitic wasps to populations of the invasive winter moth in the northeastern United States. Biol Invasions 2019. [DOI: 10.1007/s10530-019-02019-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Benning JW, Eckhart VM, Geber MA, Moeller DA. Biotic Interactions Contribute to the Geographic Range Limit of an Annual Plant: Herbivory and Phenology Mediate Fitness beyond a Range Margin. Am Nat 2019; 193:786-797. [DOI: 10.1086/703187] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Oliveira MV, Dainez-Filho MS, Bertoncin AP, Muniz CM, Meurer T, Figueiredo BR, Thomaz SM, Fávaro SL, Mormul RP. Native snails choose an invasive macrophyte over a native macrophyte as a food resource. CAN J ZOOL 2019. [DOI: 10.1139/cjz-2018-0116] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Invasive species cause ecological and economic impacts on invaded ecosystems, although the presence of native species hampers the propagation of invasive species due to biotic resistance. We tested the effects of grazing by the native channeled applesnail (Pomacea canaliculata (Lamarck, 1828)) over the invasive macrophyte Hydrilla verticillata (L. f.) Royle (water thyme) and the native macrophyte Egeria najas Planch to evaluate the potential of herbivory as a mechanism to resist invasion. Both macrophyte species were offered, individually and combined, as food resources to the snail to evaluate its feeding preference. The macrophyte energy content and stiffness were also measured. The results indicate a higher H. verticillata biomass consumption by P. canaliculata when this macrophyte was available both individually and combined with E. najas, suggesting that H. verticillata is more palatable to the snail, despite this macrophyte being stiffer than the native one. Therefore, P. canaliculata may offer resistance to H. verticillata invasion. The feeding preference and high rates of herbivory by this snail on H. verticillata likely are associated with the higher energy content of the invasive, compared with the native, macrophyte. Experiments combining different food availabilities and snail densities are necessary to evaluate the biological control capacity of P. canaliculata under different scenarios.
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Affiliation(s)
- Marcelo V.C. Oliveira
- Programa de Pós-graduação em Ecologia de Ambientes Aquáticos Continentais, Núcleo de Pesquisas em Limnologia, Ictiologia e Aquicultura – Nupélia, Universidade Estadual de Maringá – UEM, Bloco H90, Avenida Colombo, 5790, CEP 87020-900, Maringá, Paraná, Brazil
| | - Mario S. Dainez-Filho
- Programa de Pós-graduação em Ecologia de Ambientes Aquáticos Continentais, Núcleo de Pesquisas em Limnologia, Ictiologia e Aquicultura – Nupélia, Universidade Estadual de Maringá – UEM, Bloco H90, Avenida Colombo, 5790, CEP 87020-900, Maringá, Paraná, Brazil
| | - Ana P.S. Bertoncin
- Programa de Pós-graduação em Ecologia de Ambientes Aquáticos Continentais, Núcleo de Pesquisas em Limnologia, Ictiologia e Aquicultura – Nupélia, Universidade Estadual de Maringá – UEM, Bloco H90, Avenida Colombo, 5790, CEP 87020-900, Maringá, Paraná, Brazil
| | - Carolina M. Muniz
- Programa de Pós-graduação em Ecologia de Ambientes Aquáticos Continentais, Núcleo de Pesquisas em Limnologia, Ictiologia e Aquicultura – Nupélia, Universidade Estadual de Maringá – UEM, Bloco H90, Avenida Colombo, 5790, CEP 87020-900, Maringá, Paraná, Brazil
| | - Thamis Meurer
- Programa de Pós-graduação em Ecologia de Ambientes Aquáticos Continentais, Núcleo de Pesquisas em Limnologia, Ictiologia e Aquicultura – Nupélia, Universidade Estadual de Maringá – UEM, Bloco H90, Avenida Colombo, 5790, CEP 87020-900, Maringá, Paraná, Brazil
- Departamento de Biodiversidade, Universidade Federal do Paraná, Rua Pioneiro 2153, CEP 85950-000, Palotina, Paraná, Brazil
| | - Bruno R.S. Figueiredo
- Programa de Pós-graduação em Ecologia de Ambientes Aquáticos Continentais, Núcleo de Pesquisas em Limnologia, Ictiologia e Aquicultura – Nupélia, Universidade Estadual de Maringá – UEM, Bloco H90, Avenida Colombo, 5790, CEP 87020-900, Maringá, Paraná, Brazil
| | - Sidinei M. Thomaz
- Programa de Pós-graduação em Ecologia de Ambientes Aquáticos Continentais, Núcleo de Pesquisas em Limnologia, Ictiologia e Aquicultura – Nupélia, Universidade Estadual de Maringá – UEM, Bloco H90, Avenida Colombo, 5790, CEP 87020-900, Maringá, Paraná, Brazil
| | - Silvia Luciana Fávaro
- Departamento de Engenharia Mecânica, Universidade Estadual de Maringá, Avenida Colombo, 5790, CEP 87020-900, Maringá, Paraná, Brazil
| | - Roger Paulo Mormul
- Programa de Pós-graduação em Ecologia de Ambientes Aquáticos Continentais, Núcleo de Pesquisas em Limnologia, Ictiologia e Aquicultura – Nupélia, Universidade Estadual de Maringá – UEM, Bloco H90, Avenida Colombo, 5790, CEP 87020-900, Maringá, Paraná, Brazil
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Juliano SA, Westby KM, Ower GD. Know Your Enemy: Effects of a Predator on Native and Invasive Container Mosquitoes. JOURNAL OF MEDICAL ENTOMOLOGY 2019; 56:320-328. [PMID: 30668785 PMCID: PMC6389325 DOI: 10.1093/jme/tjy196] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Indexed: 06/09/2023]
Abstract
We tested the effect of the native container-dwelling predator Toxorhynchites rutilus on the codominant container-dwelling mosquitoes: native Aedes triseriatus and invasive Aedes japonicus. We established two predator treatments (predator, no predator) by removing T. rutilus from all containers, and stocking T. rutilus larvae (1/3.5 liters) in the predator treatment. Removal and stocking was repeated every 3 d and established significantly different predator abundances in both large and small containers. Repeated-measures analysis of variance (ANOVA) on standard samples showed larvae+pupae/liter of A. japonicus was greater without versus with predation, and this difference increased across samples. In contrast, repeated-measures ANOVA showed larvae+pupae/liter of A. triseriatus was statistically indistinguishable for predation treatments and was greater in small versus large containers. Thus, predation reduced invasive A. japonicus while having no detectable effect on A. triseriatus larvae and pupae. A final destructive census of pupae showed that predation reduced pupae/liter of both species, but this effect was greater and more consistent across container sizes for A. japonicus. Predator effects on abundances were not products of the nonlethal effect of predator avoidance by ovipositing females, as T. rutilus presence did not lead to reduced egg inputs by either Aedes, nor by Aedes spp. as a group. Effects of predation thus are best explained by differential success of developing larvae due to the greater lethal effect of T. rutilus on A. japonicus than on A. triseriatus. Thus, this system is consistent with the hypothesis that native predators can limit success and potential impacts of invasive mosquitoes.
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Affiliation(s)
- Steven A Juliano
- School of Biological Sciences, Illinois State University, Normal, IL
| | - Katie M Westby
- School of Biological Sciences, Illinois State University, Normal, IL
| | - Geoffrey D Ower
- School of Biological Sciences, Illinois State University, Normal, IL
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40
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Anthropogenically altered trophic webs: alien catfish and microplastics in the diet of Eurasian otters. MAMMAL RES 2019. [DOI: 10.1007/s13364-018-00412-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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41
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Individual and combined effects of low dissolved oxygen and low pH on survival of early stage larval blue crabs, Callinectes sapidus. PLoS One 2018; 13:e0208629. [PMID: 30532265 PMCID: PMC6285982 DOI: 10.1371/journal.pone.0208629] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2018] [Accepted: 11/20/2018] [Indexed: 11/19/2022] Open
Abstract
A large number of coastal ecosystems globally are subjected to concurrent hypoxic and acidified conditions that will likely intensify and expand with continued climate change. In temperate regions, the spawning of many important organisms including the Atlantic blue crab Callinectes sapidus occurs during the summer months when the severity of coastal hypoxia and acidification is the greatest. While the blue crab earliest larval stage can be exposed to co-occurring hypoxia and acidification observed in many coastal ecosystems, the effects of these concurrent stressors on larval blue crab survival is unknown. This study investigated the individual and combined consequences of low dissolved oxygen (DO) and low pH on blue crab larvae survival through a series of short-term experiments. During 14-day experiments with moderately hypoxic conditions (117-127 μM O2 or 3.74-4.06 mg L-1) and acidified conditions (pH on total scale of 7.16-7.33), low DO and low pH individually and significantly reduced larval survival by 60% and 49%, respectively, with the combination of stressors reducing survival by 87% compared to the control treatment (210-269 μM O2 or 6.72-8.61 mg L-1, 7.91-7.94 DO and pH, respectively). During 4-day experiments with lower DO levels (68-83 μM O2 or 2.18-2.62 mg L-1) and comparable pH levels of 7.29-7.39, low DO individually reduced survival by >90% compared to the control (261-267 μM O2 or 8.35-8.54 mg L-1, 7.92-7.97 DO and pH, respectively), whereas low pH had no effect and there was no interaction between stressors. Over a 4-day period, the DO threshold at which 50% of the larval blue crab population died (LC50) was 121 μM O2 (3.86 mgL-1). In 14-day experiments, the DO and pH effects were additive, yielding survival rates lower than the individual treatments, and significantly correlated with DO and pH concentrations. Collectively, these findings indicate that blue crab sensitivity to both low DO and low pH are acute within the larval stage, depend on the intensity and duration of exposure, and leads to mortality, thereby potentially contributing to the interannual variability and possible regional declines of this fishery.
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Wright JT, Holmes ZC, Byers JE. Stronger positive association between an invasive crab and a native intertidal ecosystem engineer with increasing wave exposure. MARINE ENVIRONMENTAL RESEARCH 2018; 142:124-129. [PMID: 30314636 DOI: 10.1016/j.marenvres.2018.09.025] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Revised: 09/26/2018] [Accepted: 09/26/2018] [Indexed: 06/08/2023]
Abstract
Ecosystem engineers are predicted to have stronger facilitative effects when environmental stress is higher. Here we examined whether facilitation of the invasive porcelain crab Petrolisthes elongatus by the ecosystem engineering serpulid tube worm Galeolaria caespitosa increased with wave exposure. Petrolisthes occurs beneath intertidal boulders which often have a high cover of Galeolaria on their underside. Surveys across nine sites demonstrated Petrolisthes abundance beneath boulders increased with wave exposure and Galeolaria cover, although only when the habitat matrix beneath boulders was rock or mixed rock and sand. Moreover, as wave exposure increased, the strength of relationship between Petrolisthes abundance and the surface area of Galeolaria also increased. Experimentally, the presence of Galeolaria on the underside of boulders increased Petrolisthes abundance by 50% compared to boulders lacking Galeolaria. Our findings suggest the facilitative role of Galeolaria is stronger at more wave-exposed sites, which appears to contribute to a higher abundance of invasive Petrolisthes.
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Affiliation(s)
- Jeffrey T Wright
- Institute for Marine and Antarctic Studies, University of Tasmania, Private Bag 129, Hobart, 7001, Australia.
| | - Zachary C Holmes
- Odum School of Ecology, University of Georgia, Athens, GA, 30602, USA
| | - James E Byers
- Odum School of Ecology, University of Georgia, Athens, GA, 30602, USA
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Kinney KA, Pintor LM, Byers JE. Does predator-driven, biotic resistance limit the northward spread of the non-native green porcelain crab, Petrolisthes armatus? Biol Invasions 2018. [DOI: 10.1007/s10530-018-1821-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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44
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Stronger predation in a subtropical community dampens an invasive species-induced trophic cascade. Biol Invasions 2018. [DOI: 10.1007/s10530-018-1819-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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45
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Habitat utilization by an invasive herbivorous fish (Siganus rivulatus) in its native and invaded range. Biol Invasions 2018. [DOI: 10.1007/s10530-018-1790-4] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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46
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Smith RS, Blaze JA, Osborne TZ, Byers JE. Facilitating your replacement? Ecosystem engineer legacy affects establishment success of an expanding competitor. Oecologia 2018; 188:251-262. [PMID: 29948316 DOI: 10.1007/s00442-018-4184-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Accepted: 06/02/2018] [Indexed: 11/26/2022]
Abstract
Interactions with resident species can affect the rate that expanding species invade novel areas. These interactions can be antagonistic (biotic resistance), where resident species hinder invasive establishment, or facilitative (biotic assistance), where residents promote invasive establishment. The predominance of resistance or assistance could vary with the abiotic context. We examined how the effects of a resident ecosystem engineer interact with abiotic stress to resist or assist the establishment of an expanding competitor. In Florida salt marshes, native cordgrass, Spartina alterniflora, is an influential ecosystem engineer that, when dead, exerts a legacy effect by forming persistent wrack patches. We examined how the legacy effect of Spartina wrack varies with spatial context and abiotic conditions to influence establishment of the northward-expanding black mangrove, Avicennia germinans. Field surveys documented that Spartina wrack and Avicennia propagules co-occur in the high intertidal zone, and we conducted two outdoor mesocosm experiments to investigate this association. Wrack positively affected propagule establishment when propagules were beneath wrack, but negatively affected establishment when propagules were above wrack. The abiotic tidal regime influences the magnitude of wrack effects by controlling ambient moisture, and the positive and negative effects of wrack were stronger in low moisture conditions that simulated desiccation stress during harsh neap tides. Thus, the same resident engineer can either resist or assist an expanding competitor and the magnitude of these effects depends on abiotic conditions. We propose that under harsh conditions, there is greater scope for an engineer's mediating influence to affect associated species, both positively and negatively.
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Affiliation(s)
- Rachel S Smith
- Odum School of Ecology, University of Georgia, Athens, GA, 30602, USA.
| | - Julie A Blaze
- Odum School of Ecology, University of Georgia, Athens, GA, 30602, USA
| | - Todd Z Osborne
- The Whitney Laboratory for Marine Bioscience, University of Florida, St. Augustine, FL, 32080, USA
- Soil and Water Sciences Department, University of Florida, Gainesville, FL, 32611, USA
| | - James E Byers
- Odum School of Ecology, University of Georgia, Athens, GA, 30602, USA
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Forsström T, Vesakoski O, Riipinen K, Fowler AE. Post-invasion demography and persistence of a novel functional species in an estuarine system. Biol Invasions 2018. [DOI: 10.1007/s10530-018-1777-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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48
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Zheng YL, Burns JH, Liao ZY, Li YP, Yang J, Chen YJ, Zhang JL, Zheng YG. Species composition, functional and phylogenetic distances correlate with success of invasive Chromolaena odorata in an experimental test. Ecol Lett 2018; 21:1211-1220. [PMID: 29808558 DOI: 10.1111/ele.13090] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2017] [Revised: 12/20/2017] [Accepted: 04/24/2018] [Indexed: 12/25/2022]
Abstract
Biotic resistance may influence invasion success; however, the relative roles of species richness, functional or phylogenetic distance in predicting invasion success are not fully understood. We used biomass fraction of Chromolaena odorata, an invasive species in tropical and subtropical areas, as a measure of 'invasion success' in a series of artificial communities varying in species richness. Communities were constructed using species from Mexico (native range) or China (non-native range). We found strong evidence of biotic resistance: species richness and community biomass were negatively related with invasion success; invader biomass was greater in plant communities from China than from Mexico. Harvesting time had a greater effect on invasion success in plant communities from China than on those from Mexico. Functional and phylogenetic distances both correlated with invasion success and more functionally distant communities were more easily invaded. The effects of plant-soil fungi and plant allelochemical interactions on invasion success were species-specific.
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Affiliation(s)
- Yu-Long Zheng
- Key Laboratory of Tropical Forest Ecology, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Menglun, Mengla, Yunnan, 666303, China
| | - Jean H Burns
- Department of Biology, Case Western Reserve University, Cleveland, OH, 44106, USA
| | - Zhi-Yong Liao
- Key Laboratory of Tropical Forest Ecology, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Menglun, Mengla, Yunnan, 666303, China
| | - Yang-Ping Li
- Key Laboratory of Tropical Forest Ecology, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Menglun, Mengla, Yunnan, 666303, China
| | - Jie Yang
- Key Laboratory of Tropical Forest Ecology, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Menglun, Mengla, Yunnan, 666303, China
| | | | - Jiao-Lin Zhang
- Key Laboratory of Tropical Forest Ecology, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Menglun, Mengla, Yunnan, 666303, China
| | - Yu-Guo Zheng
- Key Laboratory of Chemical Synthesis and Environmental Pollution Control-Remediation Technology, Xingyi Normal University for Nationalities, 32 Hunan Road, Xing Yi, Guizhou, 562400, China
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Astudillo JC, Bonebrake TC, Leung KMY. Deterred but not preferred: Predation by native whelk Reishia clavigera on invasive bivalves. PLoS One 2018; 13:e0196578. [PMID: 29768424 PMCID: PMC5955525 DOI: 10.1371/journal.pone.0196578] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2017] [Accepted: 04/16/2018] [Indexed: 12/02/2022] Open
Abstract
This study tested the potential bio-control role of the common native predatory whelk Reishia clavigera on the invasive bivalves Xenostrobus securis and Mytilopsis sallei and the native Brachidontes variabilis in Hong Kong. Predation experiments were conducted in the laboratory under salinity levels of 22‰ and 32‰, as well as under field conditions. The results indicate that the invasive bivalves are more vulnerable to predation than the native bivalve in environments with high salinity, whereas environments with moderately low salinity (22‰) may reduce predation. Because R. clavigera did not show clear prey preference, the low survival of the invasive species might be due to a lack of effective anti-predatory defenses under experimental conditions. These findings could explain the high abundance of the invasive bivalves in disturbed environments in Hong Kong where predation appears to be lower.
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Affiliation(s)
- Juan C. Astudillo
- The Swire Institute of Marine Science, Faculty of Science, The University of Hong Kong, Shek O, Hong Kong, China
- School of Biological Sciences, The University of Hong Kong, Hong Kong, China
- * E-mail: (JCA); (KMYL)
| | | | - Kenneth M. Y. Leung
- The Swire Institute of Marine Science, Faculty of Science, The University of Hong Kong, Shek O, Hong Kong, China
- School of Biological Sciences, The University of Hong Kong, Hong Kong, China
- State Key Laboratory in Marine Pollution, City University of Hong Kong, Kowloon, Hong Kong, China
- * E-mail: (JCA); (KMYL)
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Rettig JE, Smith GR, Eng-Surowiac G, Mirzashvili D, Smyk M, Jones M, Hollis J. Consumption of Invasive Western Mosquitofish Fry by Adult Conspecifics and Native Crayfish. Northeast Nat (Steuben) 2018. [DOI: 10.1656/045.025.0109] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Affiliation(s)
| | | | | | | | - Mallory Smyk
- Department of Biology, Denison University, Granville, OH 43023
| | - Maggie Jones
- Department of Biology, Denison University, Granville, OH 43023
| | - Jeremy Hollis
- Department of Biology, Denison University, Granville, OH 43023
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