scholarly journals Introgression shapes fruit color convergence in invasive Galápagos tomato

eLife ◽  
2021 ◽  
Vol 10 ◽  
Author(s):  
Matthew JS Gibson ◽  
Maria de Lourdes Torres ◽  
Yaniv Brandvain ◽  
Leonie Moyle
Keyword(s):  
Invasive Species ◽  
Invasive Plants ◽  
Population Genomics ◽  
Carotenoid Biosynthesis ◽  
Fruit Color ◽  
Single Event ◽  
Trait Convergence ◽  
Global Biodiversity ◽  
Hybridization And Introgression ◽  
Solanum Cheesmaniae

Invasive species represent one of the foremost risks to global biodiversity. Here, we use population genomics to evaluate the history and consequences of an invasion of wild tomato-Solanum pimpinellifolium-onto the Galápagos islands from continental South America. Using >300 archipelago and mainland collections, we infer this invasion was recent and largely the result of a single event from central Ecuador. Patterns of ancestry within the genomes of invasive plants also reveal post-colonization hybridization and introgression between S. pimpinellifolium and the closely related Galapagos endemic Solanum cheesmaniae. Of admixed invasive individuals, those that carry endemic alleles at one of two different carotenoid biosynthesis loci also have orange fruits-characteristic of the endemic species-instead of typical red S. pimpinellifolium fruits. We infer that introgression of two independent fruit color loci explains this observed trait convergence, suggesting that selection has favored repeated transitions of red to orange fruits on the Galapagos.

Interactions between invasive plants and heavy metal stresses: a review

2021 ◽  
Author(s):  
Jian Li ◽  
Zhanrui Leng ◽  
Yueming Wu ◽  
Yizhou Du ◽  
Zhicong Dai ◽  
...  
Keyword(s):  
Invasive Species ◽  
Invasive Plants ◽  
Native Plants ◽  
Escape Behavior ◽  
Negative Influence ◽  
Plant Litter ◽  
Global Changes ◽  
Native Plant ◽  
Anthropogenic Contamination ◽  
The Impact

Abstract Global changes have altered the distribution pattern of the plant communities, including invasive species. Anthropogenic contamination may reduce native plant resistance to the invasive species. Thus, the focus of the current review is on the contaminant biogeochemical behavior among native plants, invasive species and the soil within the plant-soil ecosystem to improve our understanding of the interactions between invasive plants and environmental stressors. Our studies together with synthesis of the literature showed that a) the impacts of invasive species on environmental stress were heterogeneous, b) the size of the impact was variable, and c) the influence types were multidirectional even within the same impact type. However, invasive plants showed self-protective mechanisms when exposed to heavy metals (HMs) and provided either positive or negative influence on the bioavailability and toxicity of HMs. On the other hand, HMs may favor plant invasion due to the widespread higher tolerance of invasive plants to HMS together with the “escape behavior” of native plants when exposed to toxic HM pollution. However, there has been no consensus on whether elemental compositions of invasive plants are different from the natives in the polluted regions. A quantitative research comparing plant, litter and soil contaminant contents between native plants and the invaders in a global context is an indispensable research focus in the future.

scholarly journals ASSESSMENT OF A 5-YEAR-OLD REHABILITATED RIPARIAN FOREST: IS IT ALREADY SUSTAINABLE?

2015 ◽  
Vol 39 (4) ◽  
pp. 603-610
Author(s):  
Vinícius Londe ◽  
Hildeberto Caldas de Sousa ◽  
Alessandra Rodrigues Kozovits
Keyword(s):  
Invasive Species ◽  
Invasive Plants ◽  
Riparian Forest ◽  
Canopy Openness ◽  
Management Actions ◽  
Minas Gerais State ◽  
Hemispherical Photographs ◽  
Exotic Invasive ◽  
Exotic Invasive Plants ◽  
Over Time

ABSTRACTAs important as the establishment of projects of ecological restoration is its assessment post-implementation to know whether the area is becoming self-sustainable or need to be redirected. In this way, this study aimed to know the current situation of a 5-year-old rehabilitated riparian forest,inserted in an anthropogenic impacted region,at the das Velhas River, Minas Gerais State, studying the canopy openness and recruitment of seedlings as plant indicators. 15 plots were allocated in the forest, where hemispherical photographs were taken to analyze the canopy openness and evaluate all seedlings from 0.30 m to 1.30 m height.Canopy openness ranged from 23.7% to 38.8% between seasons and only 192 seedlings were found,from 13 species, five of them exotic and aggressive. Although canopy openness was low, it seems that lateral penetration of light has been favoring the development and dominancy of plants from invasive species, whereas few native ones have been recruited. The exotic/invasive plants may compromise the success of restoration mainly by competition with native planted species. The outcomes evidenced an unsustainability of the riparian forest and the requirement of some management actions to control exotic and invasive plants and ensure the preservation of the area and its ecological roles over time.

scholarly journals INVASIVE PLANTS - A BOON OR BANE TO THE LEPIDOPTERON FAUNA: CONSERVATION AND MANAGEMENT PLAN SUGGESTIONS

2017 ◽  
Vol 4 (1) ◽  
pp. 148-160
Author(s):  
Arjun C.P ◽  
Anoop V.K ◽  
Tijo K.J ◽  
Anoopkumar T.K ◽  
Roshnath R
Keyword(s):  
Invasive Species ◽  
Plant Species ◽  
Invasive Plants ◽  
Management Practices ◽  
Invasive Plant ◽  
Management Plan ◽  
Control Measures ◽  
Pteridium Aquilinum ◽  
Native Flora ◽  
Long Run

Butterfly diversity was recorded from Nov (2013) - May (2014) in Pookode region. A total number of 128 species recorded from the five families; Nymphalidae (46 species) Lycaenidae (28 species), Hesperiidae (22 species), Pieridae (17 species) and Papilionidae (15 species) respectively. During the survey invasive plant species were also recorded. There were 36 species of invasive plants from 18 families identified from the study area. More butterflies were attracted towards nectar offering invasive plants. Chromolaena odorata, Ipomea cairica, Lantana camara, Merremia vitifolia, Mikania micrantha, Mimosa diplotricha, Pennisetumpolystachyon, Pteridium aquilinum, Quisqualis indica and Sphagneticola trilobata were the major invasive plants found in the Pookode region and their flower attracts butterfly for pollination. Even though nectar offered by the plants are supportive for growth, in long run these species can affect butterfly population bydeclining native host larval plant species for butterfly reproduction. Invasive species compete with the native flora and reduce its population. Management practices like physical, chemical and modern bio control measures could be used for eradicating of invasive plants. Wise use of invasive plants for other economical purpose such as bio-fuel, medicinal purpose, bio-pesticide and handicraft could be suggested. Successful management of invasive species are needed for conserving Lepidoptera fauna and other native biota of the area.

scholarly journals A review of the introduced herpetofauna of Mexico and Central America, with comments on the effects of invasive species and biosecurity methodology

ZooKeys ◽  
2021 ◽  
Vol 1022 ◽  
pp. 79-154
Author(s):  
Víctor Hugo González-Sánchez ◽  
Jerry D. Johnson ◽  
David González-Solís ◽  
Lydia Allison Fucsko ◽  
Larry David Wilson
Keyword(s):  
Invasive Species ◽  
Alien Species ◽  
Exotic Species ◽  
Introduced Species ◽  
Central America ◽  
Middle America ◽  
Global Biodiversity

Among the principal causes producing detrimental effects on global biodiversity are introductions of alien species. Very few attempts to control introduced amphibians and reptiles in Middle America (Mexico and Central America) can be identified, so listings are provided for 24 exotic species, 16 translocated species, and 11 species that were removed from the introduced species listing because of lack of substantiating evidence that they are from established populations. Biosecurity methods are also identified that can be applied for preventing, controlling, and managing introduced and especially invasive species.

scholarly journals Use of a marsh dominated by the introduced European Lake Sedge, Carex acutiformis, by highly localized native butterflies

2015 ◽  
Vol 128 (4) ◽  
pp. 358
Author(s):  
Paul M. Catling ◽  
Brenda Kostiuk
Keyword(s):  
Invasive Species ◽  
Host Plant ◽  
Invasive Plants ◽  
Circumstantial Evidence ◽  
Close Relative ◽  
Larval Food ◽  
Native Canadian ◽  
Larval Host ◽  
Carex Acutiformis ◽  
Carex Lacustris

To determine whether native butterflies had colonized a marsh in Ottawa that was entirely dominated by the invasive alien European Lake Sedge (Carex acutiformis), we surveyed two adjacent stands of the sedge and surrounding habitats. Dion Skipper (Euphyes dion), Mulberry Wing (Poanes massasoit), Broad-winged Skipper (P. viator), and browns (Lethe spp.) were all abundant in the introduced sedge, but absent from surrounding habitats. This is the first report of the use of invasive-dominated wetland by native Canadian butterflies. Reduced nectar resources because of dominance of the invasive species over native nectar-producing plants did not prevent significant colonization. The known restriction of the butterflies to native Lakebank Sedge (Carex lacustris) as a larval host plant, but its absence in the area, coupled with dominance of its close relative, European Lake Sedge, provides strong circumstantial evidence of the use of the latter as larval food. This report doubles the number of recently localized native butterflies that have been able to increase their distribution by switching to habitat dominated by invasive plants.

Climate drives differences in the germination niche of a globally distributed invasive grass

2020 ◽  
Vol 13 (2) ◽  
pp. 195-203
Author(s):  
Rebecca A Fletcher ◽  
Kayla M Varnon ◽  
Jacob N Barney
Keyword(s):  
Invasive Species ◽  
Seed Germination ◽  
Invasive Plants ◽  
Water Availability ◽  
Invasive Plant ◽  
Invasive Grass ◽  
Climate Gradients ◽  
Exotic Invasive Species ◽  
Temperature And Precipitation ◽  
Wide Range

Abstract Aims Exotic invasive species are often exposed to strong selection pressures in their new ranges that can often lead to substantial intraspecific variation. Population differentiation in the timing of life history events in response to climate gradients is thought to be an important mechanism facilitating the range expansion of many invasive species. For seed producing plants, the timing of seed germination determines the first environmental conditions experienced by newly emerged germinates, and can have important implications for the successful colonization, establishment and spread of invasive plants—though the role of germination in the success of invasive plants remains poorly understood. Methods We assessed the variation in seed germination dynamics among 10 populations of the invasive plant Johnsongrass (Sorghum halepense) across its North American distribution, capturing both a temperature and precipitation gradient, and whether that variation is associated with home climate. Seeds were exposed to a wide range of temperatures (11–48°C) and two water availability treatments. Important Findings We found that Johnsongrass seeds germinated across a wide range of temperatures, but there was substantial variation among populations in the proportion of seeds that germinated in response to both temperature and water availability. Evidence indicates that as Johnsongrass expanded its range from warmer climates into cooler climates, there was a concurrent shift in the germination temperature niche to cooler temperatures. Our results suggest that the germination of Johnsongrass seeds has adapted to home climate allowing this invader to maximize germination throughout its range, and that this may be an important contributing factor to its invasion into new environments.

scholarly journals The Economics of Terrestrial Invasive Species: A Review of the Literature

2006 ◽  
Vol 35 (1) ◽  
pp. 178-194 ◽  
Author(s):  
Lars J. Olson
Keyword(s):  
Invasive Species ◽  
International Trade ◽  
Biological Invasion ◽  
Invasive Plants ◽  
Invasive Species Management ◽  
Review Of The Literature ◽  
Economic Literature ◽  
National Scale ◽  
Species Management ◽  
Control And Prevention

This paper reviews the literature on the economics of invasive species management as it applies to invasive species in general and terrestrial invasive species in particular. The paper summarizes a number of recent studies that assign values to the economic impact of terrestrial invasive species on a national scale. This is followed by a review of the economic literature on control and prevention of a biological invasion and the literature on international trade and trade policy with invasive species. The paper then reviews selected studies on terrestrial invasive plants, animals, and microbes, respectively.

Do power line rights-of-way facilitate the spread of non-peatland and invasive plants in bogs and fens?

Botany ◽  
2011 ◽  
Vol 89 (2) ◽  
pp. 91-103 ◽  
Author(s):  
Caroline Dubé ◽  
Stéphanie Pellerin ◽  
Monique Poulin
Keyword(s):  
Invasive Species ◽  
Invasive Plants ◽  
Power Line ◽  
Water Conductivity ◽  
Abiotic Conditions ◽  
Dispersal Vectors ◽  
Ombrotrophic Bog ◽  
Water Ph ◽  
Linear Infrastructures

Linear infrastructures are known to facilitate the spread of undesirable species in ecosystems. Compared with other types of infrastructure, the role of power line rights-of-way (ROWs) as dispersal vectors remains poorly understood, especially with regard to peatlands. The aim of our study was to evaluate their impacts on the vegetation of ombrotrophic (bog) and minerotrophic (fen) peatlands. The vegetation communities within and adjacent to power line ROWs were sampled in 23 bogs and 11 fens in southern Québec. In fens, invasive species were found in abundance along the first 250 m within ROWs, while native non-peatland species were able to spread into entire ROWs. Invasive species were also able to colonize the adjacent fen habitats but were mostly concentrated in the first 4 m from ROW edges. Some species were, however, able to establish at more than 43 m from ROWs. Invasive and native non-peatland species were mostly restricted to the first 31 m within ROWs intersecting a bog and almost none dispersed in the adjacent bog habitats. Overall, the average cover of native non-peatland and invasive species in ROWs was mostly related to intrinsic abiotic conditions such as water pH, water conductivity, and water table level, while landscape surrounding the peatland and historical variables (e.g., time elapse since the construction of the ROW) had few impacts in both bogs and fens.

scholarly journals DNA Barcoding Invasive Species of South Africa: Alien invasive plants of the North-West Province

2013 ◽  
Vol 86 ◽  
pp. 175
Author(s):  
D.M. Komape ◽  
L.I. Mabe ◽  
S.J. Siebert ◽  
M. Struwig ◽  
T.M. Sethusa ◽  
...  
Keyword(s):  
South Africa ◽  
Invasive Species ◽  
Dna Barcoding ◽  
Invasive Plants ◽  
North West ◽  
The North ◽  
North West Province ◽  
Alien Invasive Plants ◽  
Plants Of The North

scholarly journals Climate change and invasive species: a physiological performance comparison of invasive and endemic bees in Fiji

2020 ◽  
pp. jeb.230326
Author(s):  
Carmen R. B. da Silva ◽  
Julian E. Beaman ◽  
James B. Dorey ◽  
Sarah J. Barker ◽  
Nicholas C. Congedi ◽  
...  
Keyword(s):  
Climate Change ◽  
Invasive Species ◽  
Invasive Plants ◽  
Thermal Tolerance ◽  
Performance Comparison ◽  
Desiccation Resistance ◽  
Metabolic Rates ◽  
Adaptive Potential ◽  
Tropical Island ◽  
Mixed Support

Anthropogenic climate change and invasive species are two of the greatest threats to biodiversity, affecting the survival, fitness and distribution of many species around the globe. Invasive species are often expected to have broad thermal tolerances, be highly plastic, or have high adaptive potential when faced with novel environments. Tropical island ectotherms are expected to be vulnerable to climate change as they often have narrow thermal tolerances and limited plasticity. In Fiji, only one species of endemic bee, Homalictus fijiensis, is commonly found in the lowland regions, but two invasive bee species, Braunsapis puangensis and Ceratina dentipes, have recently been introduced to Fiji. These introduced species pollinate invasive plants and might compete with H. fijiensis and other native pollinators for resources. To test whether certain performance traits promote invasiveness of some species, and to determine which species are the most vulnerable to climate change, we compared the thermal tolerance, desiccation resistance, metabolic rate, and seasonal performance adjustments of endemic and invasive bees in Fiji. The two invasive species tended to be more resistant to thermal and desiccation stress than H. fijiensis, while H. fijiensis had greater capacity to adjust their CTMAX with season, and H. fijiensis females tended to have higher metabolic rates, than B. puangensis females. These findings provide mixed support for current hypotheses for the functional basis of the success of invasive species, however, we expect the invasive bees in Fiji to be more resilient to climate change due to their increased thermal tolerance and desiccation resistance.

Sign in / Sign up

Export Citation Format

Share Document