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Dissertations / Theses on the topic 'Invasive predators'

Author: Grafiati

Published: 5 June 2025

Last updated: 2 August 2025

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1

Kelly, D. W. "The role of native and invasive amphipods (Crustacea) in freshwater communities." Thesis, Queen's University Belfast, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.390875.

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2

St, Clair James J. H. "Plovers, invertebrates and invasive predators : aspects of the ecology of some island populations." Thesis, University of Bath, 2010. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.537714.

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This thesis makes progress in two broad fields of research, descriptive ornithology and invasion ecology, based largely on fieldwork in the Falkland Islands. Populations of two little-studied South American waders, the Two-banded Plover Charadrius falklandicus and the Rufous-chested Dotterel Charadrius modestus, were monitored over a four-year period at a single island site: in chapters two, three and four this thesis presents information on the diel pattern ofincubation sharing by males and females of both species (the two species showed opposite diel sex-roles), data on morphology including

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3

Pettit, Lachlan. "The long-term impacts of invasive cane toads on reptilian predators in Australia." Thesis, University of Sydney, 2020. https://hdl.handle.net/2123/24545.

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The near-extirpation of varanid lizards by Cane Toads has severely impacted ecosystem processes. Given the critical roles of apex predators in regulating ecosystem function, and the massively negative impacts of toads on populations of large goannas, we need to know the time-course of such effects. Limited data suggest that goanna populations eventually recover (e.g., in northeastern Queensland, where toads have been present for several decades) – but we know almost nothing about the nature or rate of such recovery. To develop robust priorities for conservation management, we need to understan

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4

Harper, Kathryn M. "Yellow perch consumption of invasive mussels in the St. Lawrence River." Thesis, McGill University, 2007. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=101134.

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Biological invasions are a global phenomenon that can threaten native species and disrupt ecosystem processes. Exotic species also impact ecosystems in less conspicuous ways by provoking native species to alter their foraging behaviour. Subtle impacts such as diet shifts are frequent, and can have consequences for food web dynamics and the fitness of native predators. Diet shifts involving the consumption of exotic species require native predators to recognize, capture and handle novel prey. In this thesis, I document a diet shift in the St. Lawrence River involving a common native fish and Eu

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5

Cada, Chelsea Ann. "Interactions between the invasive New Zealand mud snail, Potamopyrgus antipodarum, baetid mayflies, and fish predators." Thesis, Connect to this title online, 2004. http://etd.lib.montana.edu/etd/2004/cada/CadaC1204.pdf.

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6

Allen, Christine D. "AN ASSESSMENT OF THE INVASIVE POISON HEMLOCK AND ITS INSECT ASSOCIATES IN KENTUCKY." UKnowledge, 2013. http://uknowledge.uky.edu/entomology_etds/4.

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Poison hemlock, Conium maculatum (Apiaceae), is an invasive plant in North America with a unique toxic chemistry. Previous research on this plant has focused on identifying herbivores as potential biological control agents or describing the toxic plant alkaloids. However, none have examined the role of higher trophic levels in the food web surrounding poison hemlock. Generalist predators and food web interactions are an important component of studies investigating invasion effects, as plant or animal introductions can alter ecosystem functioning. In this study, predators in poison hemlock were

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7

Griffen, Blaine David. "Interactions between two invasive crab predators, Carcinus maenas and Hemigrapsus sanguineus, and consequences for the native community /." Restricted access (UM), 2007. http://libraries.maine.edu/gateway/oroauth.asp?file=orono/etheses/37803141.pdf.

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8

Mukwevho, Vuledzani Oral. "The Harlequin ladybeetle Harmonia axyridis (Coleoptera: Coccinellidae) in the Western Cape Province, South Africa: effects on arthropods in urban, agricultural and natural ecosystems." Thesis, Stellenbosch : Stellenbosch University, 2015. http://hdl.handle.net/10019.1/97870.

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Thesis (MSc)--Stellenbosch University, 2015.<br>ENGLISH ABSTRACT: Invasive arthropod predators are one of the largest and most diverse groups of invasive insects in the world. Many are generalist predators, with cosmopolitan distributions due to their use as biological control agents in agriculture. Harmonia axyridis (Coleoptera: Coccinellidae), an invasive arthropod predator species native to Asia, which now has a world-wide distribution. It is considered one of the most successful biological control predator species and is generally considered to be economically beneficial. However, negative

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9

Crosby, Chelsea Helene. "The role of individual learning and dietary preference in the consumption of the invasive Green Porcelain Crab, Petrolisthes armatus, by Native Crab Predators." The Ohio State University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=osu1523887793938929.

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10

Corlay, Herrera Favio Raul. "Seasonal development and natural enemies of an invasive exotic species, the swede midge Contarinia nasturtii (Kieffer), in Quebec." Thesis, McGill University, 2006. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=100787.

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In Quebec, the swede midge (Contarinia nasturtii), a newly invasive pest, was found for the first time in 2003. During a two year study (2004-2005) I studied the seasonal development of the swede midge, the presence of natural enemies and tested entomopathogenic nematodes for its control. Results showed that the overwintering generation of the swede midge emerged during the second half of June. Based on adult captures and abundance of larvae in the field, there were three to four overlapping generations. Late transplants were more heavily attacked by the swede midge and broccoli and cauliflowe

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11

Reid, Andrea. "Predicting peak refugia for mitigating impacts of invasive predatory fishes." Thesis, McGill University, 2013. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=114304.

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Areas outside the distributional boundaries of an introduced predator may be exploited by native prey as refugia from predation. A classic example is the Lake Victoria basin of East Africa where hypoxic (low oxygen) wetlands serve as refugia for some native fishes from introduced Nile perch (Lates niloticus). In this thesis I quantified patterns of wetland refugia use in Lake Nabugabo, Uganda, a satellite of Lake Victoria, to achieve two primary goals: (i) identify peak refugia, where the greatest abundance and richness of native fishes persist, and (ii) directly link hypoxia tolerance of nati

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12

Ware, Remy Lian. "The invasive ladybird Harmonia axyridis as a top intraguild predator." Thesis, University of Cambridge, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.612130.

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13

MELOTTO, ANDREA. "ANTI-PREDATOR RESPONSES TOWARDS AN INVASIVE CRAYFISH IN AMPHIBIAN LARVAE." Doctoral thesis, Università degli Studi di Milano, 2020. http://hdl.handle.net/2434/714592.

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Invasive species pose a severe threat to native ecosystems and represent the second cause of biodiversity loss on global scale after habitat destruction. In particular, invasive predators are major drivers of rapid population declines and local extinctions in native prey. During biotic invasions, native prey become abruptly exposed to novel predators with which they share no history of coevolution. Thus, the lack of common evolutionary history often hampers prey effective response to the novel predation pressures; native prey can both fail to recognise predators as a threat and exhibit anti-p

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14

Grason, Emily W. Miner Benjamin G. "Alien vs. predator : effects of a native predator on two invasive oyster drills and oysters in Washington State /." Online version, 2010. http://content.wwu.edu/cdm4/item_viewer.php?CISOROOT=/theses&CISOPTR=360&CISOBOX=1&REC=5.

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15

Phillips, Ben Lee. "Evolution and impact of invasive species : cane toads and snakes in Australia." University of Sydney. School of Biological Sciences, 2004. http://hdl.handle.net/2123/611.

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Evolution can occur rapidly, along timescales that are traditionally regarded as 'ecological'. Despite growing acceptance among biologists of rapid evolution, a strong paradigm of contemporary evolution is still absent in many sub-disciplines. Here I apply a contemporary evolution viewpoint to conservation biology. Specifically, I examine the impact of cane toads (Bufo marinus) on Australian snakes. Toads were introduced into Australia in 1935, have spread rapidly and represent a novel, extremely toxic prey item to na�ve Australian predators (including snakes). Based on dietary preference

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16

Kipp, Rebekah. "Impacts of an invasive benthic predator on macroinvertebrate communities in the St. Lawrence River." Thesis, McGill University, 2010. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=94911.

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Introduced exotic predators can restructure biotic communities and alter the functioning of ecosystems. The round goby Neogobius melanostomus, a Eurasian fish, has spread throughout the lower Great Lakes and, in recent years, has colonized the upper St. Lawrence River. A few studies have recorded the impacts of this predator on benthic communities in the Great Lakes, highlighting its negative effects on zebra mussels and other macroinvertebrates. In this thesis, I investigate the direct and indirect effects of the round goby on benthic macroinvertebrate communities and algae in the upper St. L

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17

Bailey, R. J. E. "Predatory interactions between the invasive amphipod Gammarus tigrinus and the native Opossum shrimp Mysis relicta." Thesis, Queen's University Belfast, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.368463.

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18

Woodward, Guy. "Invasion of a stream food web by a new top predator." Thesis, Queen Mary, University of London, 1999. http://qmro.qmul.ac.uk/xmlui/handle/123456789/1636.

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A large predator, the nymph of the dragonfly Cordulegaster boltonii (Anisoptera) (Donovan), has recently invaded Broadstone Stream, an acid headwater in southern England. Because of its large size, the invader established itself as a new top predator. The Broadstone Stream food web is exceptionally detailed and the community has been studied since the early 1970s. The invasion of C boltonii, therefore, provided a rare opportunity to investigate the effects of a potentially strong perturbation upon a well-described system. At the peak of the invasion C boltonii density exceeded seventy nymphs p

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19

Kesavaraju, Banugopan Juliano Steven A. "Behavioral interactions between predator and prey and their influence on an invasive species in container habitats." Normal, Ill. : Illinois State University, 2007. http://proquest.umi.com/pqdweb?index=0&did=1390287471&SrchMode=1&sid=4&Fmt=2&VInst=PROD&VType=PQD&RQT=309&VName=PQD&TS=1202751489&clientId=43838.

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Thesis (Ph. D.)--Illinois State University, 2007.<br>Title from title page screen, viewed on February 11, 2008. Dissertation Committee: Steven A. Juliano (chair), Diane L. Byers, L. Philip Lounibos, Charles F. Thompson, William L. Perry. Includes bibliographical references (leaves 152-163) and abstract. Also available in print.

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20

Sommers, Pacifica, and Peter Chesson. "Caching rodents disproportionately disperse seed beneath invasive grass." WILEY-BLACKWELL, 2017. http://hdl.handle.net/10150/622459.

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Seed dispersal by caching rodents is a context-dependent mutualism in many systems. Plants benefit when seed remaining in shallow caches germinates before being eaten, often gaining protection from beetles and a favorable microsite in the process. Caching in highly unfavorable microsites, conversely, could undermine the dispersal benefit for the plant. Plant invasions could disrupt dispersal benefits of seed caching by attracting rodents to the protection of a dense invasive canopy which inhibits the establishment of native seedlings beneath it. To determine whether rodents disproportionately

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21

Parker, Denisha M. "Drivers of Predatory Insect Distribution in Urban Greenspaces." The Ohio State University, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=osu1619126809030714.

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22

Hunt, Sophia Katherine. "Climate- and habitat-mediation of predator-prey interactions in an invasion context." Thesis, University of Canterbury. Biological Sciences, 2015. http://hdl.handle.net/10092/11036.

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Ecosystems across the globe are facing a range of anthropogenically-driven changes, including biotic invasions, urbanisation and land-use alterations, which can affect ecosystem structure and stability. To manage both native species decline and invasive species spread it is imperative that we can accurately predict how current global environmental change will affect biotic communities. I examined effects of different land uses at both landscape- and habitat-scales on native (Culex pervigilans) and exotic (Aedes notoscriptus) mosquito distributions in lentic (standing water) freshwater habitat

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23

Berlin, Ingrid. "Tracking an elusive predator: Studying the Scandinavian lynx population by use of genetic markers." Thesis, Uppsala University, Department of Medical Biochemistry and Microbiology, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-8095.

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<p>Abstract</p><p>Gaining accurate population information is crucial for the conservation and management of species. The National Monitoring Program for Large Carnivores monitors the Swedish lynx population (species Lynx lynx) by surveying family groups, non-invasive sampling and genetic analysis. Ten microsatellite regions were used as genetic markers to retrieve unique individual genotypes, through polymerase chain reactions (PCR) with specific primer-pairs and capillary-electrophoresis. Complete genotypes were matched using an internal database. The aim of this degree project was to show ho

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24

Green, Rebecca A. "Morphological Variation of Three Populations of the Veined Rapa Whelk, Rapana venosa, an Invasive Predatory Gastropod Species." W&M ScholarWorks, 2001. https://scholarworks.wm.edu/etd/1539617974.

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25

Lau, Tak-chuen Edward, and 劉特銓. "Interacting effects of temperature, an insecticide, and an invasive predator on larval amphibians in tropical Hong Kong." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2014. http://hdl.handle.net/10722/211153.

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26

Naddafi, Rahmat. "The Invasion of the Zebra Mussel - Effects on Phytoplankton Community Structure and Ecosystem Function." Doctoral thesis, Uppsala : Acta Universitatis Upsaliensis Acta Universitatis Upsaliensis, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-8301.

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27

Pangle, Kevin L. "The role of non-consumptive effects in the net effect of an invasive predator in the Laurentian Great Lakes." Diss., Connect to online resource - MSU authorized users, 2008.

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Thesis (Ph. D.)--Michigan State University. Fisheries and Wildlife, Ecology, Evolutionary Biology, and Behavior, 2008.<br>Title from PDF t.p. (viewed on July 2, 2009) Includes bibliographical references (p. 143-159). Also issued in print.

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28

Crego, Ramiro Daniel. "Niche Expansion of an Invasive Predator (Neovison vison), Prey Response, and Facilitative Interactions with Other Invasive Mammals at the Southern End of the Americas: Conservation Challenges and Potential Solutions." Thesis, University of North Texas, 2017. https://digital.library.unt.edu/ark:/67531/metadc1062862/.

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The Cape Horn Biosphere Reserve is located at the southern tip of South America. This large archipelago is considered one of the last pristine areas left on the world. Despite it being an unpopulated area with most of the native forest cover intact, it has not been exempt from biological invasions, one of the major drivers of biodiversity loss. Three species that naturally interact in their native range in North America – American beavers (Castor canadensis), muskrats (Ondatra zibethicus), and American mink (Neovison vison) – were independently introduced in this remote region. In my dissertat

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29

Strecker, Angela Lee. "Responses of zooplankton community structure and ecosystem function to the invasion of an invertebrate predator, Bythotrephes longimanus." Thesis, Kingston, Ont. : [s.n.], 2007. http://hdl.handle.net/1974/454.

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30

McCoy, Michelle. "Effect of the trans-Arctic invasion on Pliocene predator-prey interactions on Tjörnes Peninsula, Iceland /." Electronic version (Microsoft Word), 2007. http://dl.uncw.edu/etd/2007-3/mccoym/michellemccoy.doc.

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31

Mathers, Kate L. "The influence of signal crayfish on fine sediment dynamics and macroinvertebrate communities in lowland rivers." Thesis, Loughborough University, 2017. https://dspace.lboro.ac.uk/2134/25493.

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The spread of non-native species is a global threat and the rate at which biological invasions occur is likely to increase in the future. This thesis examines the implications of the invasive signal crayfish, Pacifastacus leniusculus (Dana), for instream communities and abiotic processes within lowland rivers in England. The potential effects on lotic macroinvertebrate communities and fine sediment dynamics are investigated at a range of spatial and temporal scales, from the examination of national long-term datasets through to short-term detailed mesocosm experiments. Interrogation of macroin

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32

Kajita, Yukie. "Reproductive Tactics of Aphidophagous Lady Beetles: Comparison of a Native Species and an Invasive Species that is Displacing It." DigitalCommons@USU, 2008. https://digitalcommons.usu.edu/etd/137.

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Coccinella septempunctata L. (Coleoptera: Coccinellidae) has been introduced to North America in recent decades, raising concerns of adverse impacts on native lady beetles, including the congeneric C. transversoguttata richardsoni (Brown). The central focus of my dissertation is to understand the importance of reproduction, in particular, in promoting invasion of C. septempunctata and its replacement of native lady beetles in alfalfa fields of western North America. Studies were conducted to compare reproductive tactics of the invasive C. septempunctata and the native C. transversoguttata, by

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33

Doherty, Tim S. "Ecology of feral cats Felis catus and their prey in relation to shrubland fire regimes." Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 2015. https://ro.ecu.edu.au/theses/1678.

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Invasive predators are major drivers of global biodiversity loss and their impacts may be worsened by other disturbances such as fire. I examined how the fire history of shrublands influences the ecology of feral cats Felis catus, dingoes Canis dingo and their prey species in Western Australia’s northern Wheatbelt region. A review of the literature revealed that feral cats inhabit a diverse range of ecosystems worldwide, but are generally recorded most often in habitat types characterised by a mixture of plant growth forms close to ground level. Cat habitat use is influenced by predation/compe

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34

Gertzen, Svenja [Verfasser], and Jost [Gutachter] Borcherding. "The ecological niche of invasive gobies at the Lower Rhine in intra- and interspecific competitive and predatory nteractions / Svenja Gertzen ; Gutachter: Jost Borcherding." Köln : Universitäts- und Stadtbibliothek Köln, 2016. http://d-nb.info/1115330543/34.

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35

Hautier, Louis. "Intraguild predation in Harmonia axyridis and its effects on native coccinellids." Doctoral thesis, Universite Libre de Bruxelles, 2012. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/209619.

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During the 1990s, over a period of just a few years, the multi-colored Asian lady beetle, Harmonia axyridis (Pallas) invaded the entire area of northern Europe. In parallel with this invasion, a decline in native coccinellid species was recorded in Belgium, Britain, and Switzerland, affecting mainly one common species: the two-spot ladybird, Adalia bipunctata L. An impressive trait of H. axyridis, that could explain both its high invasiveness and the decline of native coccinellids, is its predation behaviour. Intraguild predation is a trophic interaction between species that share the same pre

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36

Andersen, Borg Marc. "Non-indigenous zooplankton : the role of predatory cladocerans and of copepods in trophic dynamics." Doctoral thesis, Stockholms universitet, Systemekologiska institutionen, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-8506.

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Human-mediated introductions of non-indigenous species now threaten to homogenize the biota of the Globe, causing huge economic and ecological damage. This thesis studies the ecological role of 3 invasive planktonic crustaceans, the omnivorous copepod Acartia tonsa (western Atlantic and Indo-Pacific) and the predatory cladocerans, Cercopagis pengoi (Ponto-Caspian) and Bythotrephes longimanus (Eurasian). B. longimanus invaded the North American Great Lakes in 1982, C. pengoi the Baltic in 1992 and the Great Lakes in 1999, while A. tonsa has an extensive invasion history that includes the Baltic

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Sommers, Pacifica. "Interacting Effects of Predation and Competition in the Field and in Theory." Diss., The University of Arizona, 2015. http://hdl.handle.net/10150/595999.

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The principle of competitive exclusion holds that the strongest competitor for a single resource can exclude other species. Yet in many systems, more similar species appear to stably coexist than the small number of limiting resources. Understanding how and when similar species can stably coexist has taken on new urgency in managing biological invasions and their ecological impacts. Recent theoretical advances emphasize the importance of predators in determining coexistence. The effects of predators, however, can be mediated by behavioral changes induced in their prey as well as by their letha

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38

Russell, Jamie L. "Behavior of Sympatric Young-of-the-Year Smallmouth Bass (Micropterus dolomieu) and Invasive Round Goby (Neogobius melanostomus) in the Presence of a Potential Predator." Bowling Green State University / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1515425592490576.

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Priddis, Edmund R. "Niche Separation Along Environmental Gradients as a Mechanism to Promote the Coexistence of Native and Invasive Species." Diss., CLICK HERE for online access, 2007. http://contentdm.lib.byu.edu/ETD/image/etd2199.pdf.

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Kekulthotuwage, Don Shamika Prasadini. "Novel mathematical models and simulation tools for stochastic ecosystems." Thesis, Queensland University of Technology, 2022. https://eprints.qut.edu.au/229974/1/Shamika%20Prasadini_Kekulthotuwage%20Don_Thesis.pdf.

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Interacting species systems have complex dynamics that are often subject to change due to internal and external factors. Quantitative modelling approaches to capture demographic fluctuations can be insufficient in the presence of stochastic variation and uncertainty. This thesis establishes new modelling techniques to account for such demographic variations and develops novel numerical simulation tools for solving these systems. These explorations are extended for solving invasive species management problems where robust management actions and efficient use of allocated budgets are necessary.

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Chailleux, Anaïs. "Importance des interactions multi-trophiques dans les agrosystèmes pour la mise au point d'une lutte biologique contre une espèce invasive." Thesis, Nice, 2013. http://www.theses.fr/2013NICE4030/document.

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Les interactions multi-trophiques jouent un rôle clé dans la structuration des agrosystèmes et régissent la dynamique des populations qui les composent. L’objectif de cette thèse fut (i) d’étudier la perturbation des interactions liée à une espèce invasive (Tuta absoluta) dans les cultures de tomates européennes, (ii) de rechercher de nouveaux auxiliaires autochtones, puis (iii) d’évaluer l’efficacité de ces auxiliaires lorsqu’ils sont intégrés dans l’agrosystème. Nous avons montré que de nouvelles interactions sont apparues suite à l’invasion, notamment la compétition apparente entre les aleu

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Tidwell, Kyle Scott. "Quantifying the Impacts of a Novel Predator: the Distinctive Case of the Oregon Spotted Frog (Rana pretiosa) and the Invasive American Bullfrog (Rana (Aquarana) catesbeiana)." Thesis, Portland State University, 2017. http://pqdtopen.proquest.com/#viewpdf?dispub=10259428.

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<p>The decline of the Oregon Spotted Frog (<i>Rana pretiosa</i>), a Pacific Northwest endemic now federally listed as threatened, has been attributed to several aspects of ecosystem alteration, primarily habitat degradation and loss. The introduced American Bullfrog (<i>Rana (Aquarana) catesbeiana </i>) has been widely implicated in those declines, but the basis of that contention has been difficult to characterize. The bullfrog occurring at every site of recent Oregon Spotted Frog extirpation has focused concern about its impact. </p><p> Here, I present a suite of interconnected studies tha

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43

Santin-Janin, Hugues. "Dynamique spatio-temporelle des populations d'un prédateur introduit sur une île sub-antarctique : l'exemple du chat (Felis silvestris catus) sur la Grande Terre de l'archipel des Kerguelen." Phd thesis, Université Claude Bernard - Lyon I, 2010. http://tel.archives-ouvertes.fr/tel-00811532.

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Les écosystèmes sub-Antarctiques sont particulièrement vulnérables aux perturbations environnementales et notamment aux invasions biologiques. L'introduction du Chat (Felis silvestris catus) sur la Grande Terre de l'archipel des Kerguelen a eu des effets désastreux sur les communautés d'oiseaux marins. Ce prédateur doit sa survie dans cet environnement à la présence d'une proie introduite, le Lapin (Oryctolagus cuniculus), qui constitue sa ressource principale pendant l'hiver lorsque les oiseaux marins sont repartis en mer. L'éradication du chat n'apparaît pas être une solution réaliste compte

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Chailleux, Anaïs. "Importance des interactions multi-trophiques dans les agrosystèmes pour la mise au point d'une lutte biologique contre une espèce invasive." Electronic Thesis or Diss., Nice, 2013. http://www.theses.fr/2013NICE4030.

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Les interactions multi-trophiques jouent un rôle clé dans la structuration des agrosystèmes et régissent la dynamique des populations qui les composent. L’objectif de cette thèse fut (i) d’étudier la perturbation des interactions liée à une espèce invasive (Tuta absoluta) dans les cultures de tomates européennes, (ii) de rechercher de nouveaux auxiliaires autochtones, puis (iii) d’évaluer l’efficacité de ces auxiliaires lorsqu’ils sont intégrés dans l’agrosystème. Nous avons montré que de nouvelles interactions sont apparues suite à l’invasion, notamment la compétition apparente entre les aleu

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45

Duron, Quiterie. "Rats invasifs et biodiversité native au sein des forêts denses humides de Nouvelle-Calédonie. : Eléments pour l’amélioration des stratégies de gestion." Thesis, Nouvelle Calédonie, 2016. http://www.theses.fr/2016NCAL0006/document.

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Les rats introduits (Rattus spp.) sont des espèces invasives majeures menaçant la biodiversité sur la plupart des îles de laPlanète. Deux espèces, le rat noir (R. rattus) et le rat du Pacifique (R. exulans) vivent en sympatrie au sein des forêts deNouvelle-Calédonie, où la question de la faisabilité et de l' intérêt de leur contrôle (i.e. limitation locale de leur 'abondance)pour la conservation de la biodiversité native est posée. En raison d'un manque de cadre conceptuel des projets de contrôle,nous avons d'abord réalisé une synthèse et une analyse des opérations de contrôle de rats invasifs

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Kinney, Kaitlin Alyse. "The role of biotic resistance through predation on the invasion success of the green porcelain crab (Petrolisthes armatus) into nearshore oyster reef communities." The Ohio State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=osu1511958324786017.

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Woodford, Darragh J. "Riverscape-mediated effects of introduced trout on non-diadromous galaxiid fishes in New Zealand." Thesis, University of Canterbury. Biological Sciences, 2009. http://hdl.handle.net/10092/3284.

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The impact of invasive predators on native prey may depend on the availability and distribution of invader-free refugia across landscapes, if predators create demographic ‘sink’ populations in invaded patches, giving rise to source-sink dynamics in prey populations. Propagule pressure of immigrants dispersing from refugia (or sources) may consequently drive persistence in sink habitat, affecting predator-prey co-existence across the landscape. I studied whether introduced brown (Salmo trutta) and rainbow trout (Oncorhynchus mykiss) create source-sink structuring in two native galaxiid fish spe

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Meurisse, Nicolas. "Chemical ecology of rhizophagus grandis (Coleoptera: Monotomidae) and its application to the biological control of dendroctonus micans (Coleoptera: Scolytinae)." Doctoral thesis, Universite Libre de Bruxelles, 2008. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/210567.

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The Eurasian spruce bark beetle Dendroctonus micans is a major pest of spruce which is expanding its range in France, Turkey, England and Wales. Its monospecific predator Rhizophagus grandis has followed naturally the bark beetle into most areas and, since the 1960s, has also been mass-produced and successfully released within newly infested locations. <p>In this scope, the development of an effective trapping method would be very useful to assess the bark-beetle presence at previously uninfested sites, or predator establishment after release or natural spread. We demonstrated the efficiency o

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Biondi, Antonio. "Combining natural enemies and selective pesticides in IPM programmes of exotic pests: the Tuta absoluta (Lepidoptera: Gelechiidae) case." Doctoral thesis, Università di Catania, 2013. http://hdl.handle.net/10761/1452.

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The recent invasion of the Mediterranean basin by the South American tomato pinworm, Tuta absoluta (Lepidoptera: Gelechiidae), has lead to a swift increase in insecticide applications in tomato crops. Such increase may compromise the tomato Integrated Pest Management (IPM) packages that were sustainable and commonly used by farmers. My work aimed at providing key bases for including indigenous biocontrol agents of T. absoluta in IPM programs on tomato in Europe. A survey carried out in 3 Italian regions demonstrated that T. absoluta was rapidly used as host by indigenous parasitoids. The recov

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Carvalho, Francisco André Costa. "Impacts of invasive omnivore predators on plan litter decomposition in streams: the case of Procambarus clarkii." Master's thesis, 2013. http://hdl.handle.net/1822/28071.

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Dissertação de mestrado em Ecologia<br>The introduction of non-indigenous invasive species (NIS) has gained momentum in Ecology in recent years mainly because they can cause changes in biodiversity or they may function differently than the native species. In forested streams, the canopy of riparian vegetation decreases the availability of light in freshwater ecosystems and, so, plant litter from riparian vegetation is the main source of energy for microbial communities and macroinvertebrate detritivores. The Louisiana red swamp crayfish, Procambarus clarkii, is one of the most problematic NIS

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