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Insects are efficient converters of different types of low-quality organic matter into biomass rich in good quality protein. Flies are particularly well suited for the biodegradation of organic waste and larval stages can be used as animal feed. Currently, only Hermetia illucens (Diptera: Stratiomyidae) and Musca domestica (Diptera: Muscidae) are accepted for feeding purposes by European authorities. However, there are several other species potentially interesting to be used in animal feed. This review compiles available information regarding species from Calliphoridae family, ranging from scattered records of its use as animal feed to nutritional profile descriptions. Comparisons are made with the most common ingredients used as animal feed, fish meal and soybean meal as well as with other two authorised species by the European regulation, H. illucens and M. domestica. Concerns about pathogen transmission are also discussed. Blow flies present a real opportunity to recycle organic side streams under a circular economy framework and can ultimately contribute to the reduction of nutrients shortage in animal feed. Other advantages include their high fertility, short life cycle, known rearing methodologies and good nutritional profile. Further, their potential as pathogen transmitters is equivalent to the domestic fly. For all these reasons blow flies are good candidates to be used as ingredients in animal feed.
C. Prado e Castro; O.M.C.C. Ameixa. Blow flies (Diptera: Calliphoridae) promising candidates as animal feed ingredients. Journal of Insects as Food and Feed 2021, 1 -12.
AMA StyleC. Prado e Castro, O.M.C.C. Ameixa. Blow flies (Diptera: Calliphoridae) promising candidates as animal feed ingredients. Journal of Insects as Food and Feed. 2021; ():1-12.
Chicago/Turabian StyleC. Prado e Castro; O.M.C.C. Ameixa. 2021. "Blow flies (Diptera: Calliphoridae) promising candidates as animal feed ingredients." Journal of Insects as Food and Feed , no. : 1-12.
The need for more sustainable aquafeeds has prompted the exploration of insects as potential ingredients. However, commonly reared insects are not satisfactory regarding their fatty acid composition, lacking omega-3 long chain polyunsaturated fatty acids (n-3 LC PUFA), important nutrients for marine organisms. In this study, we present in detail the fatty acid profile of the long-legged fly Machaerium maritimae Haliday (Diptera: Dolichopodidae), an amphibiotic insect native to European coastal habitats. Specimens of this fly were collected in Ria de Aveiro coastal lagoon (Portugal) and the fatty acid profile was analysed through gas chromatography coupled with mass spectrometry. Results revealed a remarkably high level of n-3 LC PUFA, (11 μg/mg dry weight, 20% of the fatty acid profile) namely eicosapentaenoic acid, and a low level of saturated fatty acids. This value is higher than what is found in Hermetia illucens (black soldier fly), while comparable to other aquatic insects. We also report the presence of 50 distinct fatty acids, including multiple branched-chain and PUFA, and discuss potential implications of their presence on the ecology of this species. Variation in the fatty acid profile along the landscape is also presented. Our results indicate that M. maritimae can potentially be a high-quality lipid source for marine aquafeeds. Current legislation in Europe allowing the use of insects in aquaculture is restricted to a few selected species, often non-native, however, further research should consider native insects as potential alternatives to current ingredients in aquafeed.
P.M. Duarte; E. Maciel; M. Pinho; M.R. Domingues; R. Calado; A.I. Lillebø; O.M.C.C. Ameixa. Omega-3 on the fly: long-legged fly Machaerium maritimae as a potential source of eicosapentaenoic acid for aquafeeds. Journal of Insects as Food and Feed 2021, 1 -12.
AMA StyleP.M. Duarte, E. Maciel, M. Pinho, M.R. Domingues, R. Calado, A.I. Lillebø, O.M.C.C. Ameixa. Omega-3 on the fly: long-legged fly Machaerium maritimae as a potential source of eicosapentaenoic acid for aquafeeds. Journal of Insects as Food and Feed. 2021; ():1-12.
Chicago/Turabian StyleP.M. Duarte; E. Maciel; M. Pinho; M.R. Domingues; R. Calado; A.I. Lillebø; O.M.C.C. Ameixa. 2021. "Omega-3 on the fly: long-legged fly Machaerium maritimae as a potential source of eicosapentaenoic acid for aquafeeds." Journal of Insects as Food and Feed , no. : 1-12.
Saltmarshes are wetlands which mostly occur in intertidal areas, in transitional areas of marine and terrestrial environments, connecting saline to freshwater ecosystems, and are periodically flooded...
Olga M. C. C. Ameixa; Ana I. Sousa. Saltmarshes: Ecology, Opportunities, and Challenges. Encyclopedia of the UN Sustainable Development Goals 2020, 1 -15.
AMA StyleOlga M. C. C. Ameixa, Ana I. Sousa. Saltmarshes: Ecology, Opportunities, and Challenges. Encyclopedia of the UN Sustainable Development Goals. 2020; ():1-15.
Chicago/Turabian StyleOlga M. C. C. Ameixa; Ana I. Sousa. 2020. "Saltmarshes: Ecology, Opportunities, and Challenges." Encyclopedia of the UN Sustainable Development Goals , no. : 1-15.
Olga M. C. C. Ameixa; Pedro M. Duarte; Daniela P. Rodrigues. Insects, Food Security, and Sustainable Aquaculture. Encyclopedia of the UN Sustainable Development Goals 2020, 425 -435.
AMA StyleOlga M. C. C. Ameixa, Pedro M. Duarte, Daniela P. Rodrigues. Insects, Food Security, and Sustainable Aquaculture. Encyclopedia of the UN Sustainable Development Goals. 2020; ():425-435.
Chicago/Turabian StyleOlga M. C. C. Ameixa; Pedro M. Duarte; Daniela P. Rodrigues. 2020. "Insects, Food Security, and Sustainable Aquaculture." Encyclopedia of the UN Sustainable Development Goals , no. : 425-435.
As the world population continues to grow and natural resources become scarce, it is necessary to find alternative ways to provide sufficient and nutritious food for all. Aquaculture is a very...
Olga M. C. C. Ameixa; Pedro M. Duarte; Daniela P. Rodrigues. Insects, Food Security and Sustainable Aquaculture. Encyclopedia of the UN Sustainable Development Goals 2019, 1 -11.
AMA StyleOlga M. C. C. Ameixa, Pedro M. Duarte, Daniela P. Rodrigues. Insects, Food Security and Sustainable Aquaculture. Encyclopedia of the UN Sustainable Development Goals. 2019; ():1-11.
Chicago/Turabian StyleOlga M. C. C. Ameixa; Pedro M. Duarte; Daniela P. Rodrigues. 2019. "Insects, Food Security and Sustainable Aquaculture." Encyclopedia of the UN Sustainable Development Goals , no. : 1-11.
Although the study of the effects of microplastics increased in the last years, terrestrial ecosystems remain less studied. In fact, the effects of microplastics in insects, the most abundant group of animals and major providers of key Ecosystem Services, are not well known despite the potential cascading negative effects on the ecosystems functioning in the habitats where they occur. In this paper, a revision on available studies on microplastics contamination is provided and potential consequences to major Ecosystem Services provided by insects are discussed, using the Common International Classification of Ecosystem Services (CICES) methodology. The revision underpinned probable and potential impacts for all tree CICES divisions, i.e.: Provision, Regulation and Maintenance and Cultural Services. The available studies seem to show that different groups react differently to microplastics contamination, which clearly indicates that the effects in Ecosystem Services provided by insects need a more empirical and targeted approach.
Miguel Oliveira; Olga M.C.C. Ameixa; Amadeu M.V.M. Soares. Are ecosystem services provided by insects “bugged” by micro (nano)plastics? TrAC Trends in Analytical Chemistry 2019, 113, 317 -320.
AMA StyleMiguel Oliveira, Olga M.C.C. Ameixa, Amadeu M.V.M. Soares. Are ecosystem services provided by insects “bugged” by micro (nano)plastics? TrAC Trends in Analytical Chemistry. 2019; 113 ():317-320.
Chicago/Turabian StyleMiguel Oliveira; Olga M.C.C. Ameixa; Amadeu M.V.M. Soares. 2019. "Are ecosystem services provided by insects “bugged” by micro (nano)plastics?" TrAC Trends in Analytical Chemistry 113, no. : 317-320.
Harmonia axyridis is a global invasive alien species and its ecological effects are well documented. However, in some regions where it was deliberately introduced, it never became fully established. Until recently, Southern Europe was one such region, although, recently several overwintering populations were found in northeast Spain, which may indicate that the species can potentially spread to the rest of the Iberian Peninsula. Besides the negative impacts for native coccinellid species, the establishment of H. axyridis in the Iberian Peninsula could have an important impact on the wine industry, which is very significant in this region. To predict if H. axyridis will be able to spread across western southern Europe, with an emphasis on vine-growing regions, we used the Mahalanobis distance presence-only species distribution model, which was constructed based on 16 bioclimatic and environmental variables to characterize the occupied niche and predict the distribution of this invasive alien species. Our model revealed that H. axyridis can find suitable conditions mostly in northern regions of the Iberian Peninsula, as well as in punctual locations, in coastal regions of this territory, including important vine-growing regions, which will constitute a challenge to producers. Until recently, the spread of H. axyridis was constrained by climatic factors such as high summer temperatures, however, the overwintering individuals found in Spain seem to be able to deal with such limitations, which apparently indicate the ability to adapt to these conditions. To prevent future negative impacts of H. axyridis in the Iberian Peninsula, we recommend the implementation of an active monitoring programme, together with local stakeholders (farmers and advisers) and citizens, to record and track the dispersion of seminal propagules, which could be more easily contained, with fewer resources.
Olga M. C. C. Ameixa; Jan Šipoš; Michal Burda; Amadeu Soares; António O. Soares. Factors influencing the introduction and spread of Harmonia axyridis in the Iberian Peninsula. Biological Invasions 2018, 21, 323 -331.
AMA StyleOlga M. C. C. Ameixa, Jan Šipoš, Michal Burda, Amadeu Soares, António O. Soares. Factors influencing the introduction and spread of Harmonia axyridis in the Iberian Peninsula. Biological Invasions. 2018; 21 (2):323-331.
Chicago/Turabian StyleOlga M. C. C. Ameixa; Jan Šipoš; Michal Burda; Amadeu Soares; António O. Soares. 2018. "Factors influencing the introduction and spread of Harmonia axyridis in the Iberian Peninsula." Biological Invasions 21, no. 2: 323-331.
Olga Maria Correia Chitas Ameixa; António Onofre Soares; Amadeu M.V.M. Soares; Ana I. Lillebø. Ecosystem Services Provided by the Little Things That Run the World. Selected Studies in Biodiversity 2018, 1 .
AMA StyleOlga Maria Correia Chitas Ameixa, António Onofre Soares, Amadeu M.V.M. Soares, Ana I. Lillebø. Ecosystem Services Provided by the Little Things That Run the World. Selected Studies in Biodiversity. 2018; ():1.
Chicago/Turabian StyleOlga Maria Correia Chitas Ameixa; António Onofre Soares; Amadeu M.V.M. Soares; Ana I. Lillebø. 2018. "Ecosystem Services Provided by the Little Things That Run the World." Selected Studies in Biodiversity , no. : 1.
In the present study we tested, under controlled conditions, the combined effect of seed dimorphism and salinity on the germination responses of Salicornia ramosissima. Results evidenced that the dimorphic seed bank of wild S. ramosissima could successfully germinate at a salinity range from 0 to 25 ≈428 mM NaCl. However, germination responses were higher at salinities lower than 15 ≈ 257 mM NaCl, showing also a lower variability within seed type, indicating that for an optimized response this salinity should be considered as a threshold in combination with a sustainable use of freshwater resources. As variability in germination responses tends to increase with salinity, under scenarios of higher salinity and freshwater scarcity, seed selection should be considered in order to optimize seed germination output.
Olga M.C.C. Ameixa; Bruna Marques; Valter S. Fernandes; Amadeu Soares; Ricardo Calado; Ana I. Lillebø. Dimorphic seeds of Salicornia ramosissima display contrasting germination responses under different salinities. Ecological Engineering 2015, 87, 120 -123.
AMA StyleOlga M.C.C. Ameixa, Bruna Marques, Valter S. Fernandes, Amadeu Soares, Ricardo Calado, Ana I. Lillebø. Dimorphic seeds of Salicornia ramosissima display contrasting germination responses under different salinities. Ecological Engineering. 2015; 87 ():120-123.
Chicago/Turabian StyleOlga M.C.C. Ameixa; Bruna Marques; Valter S. Fernandes; Amadeu Soares; Ricardo Calado; Ana I. Lillebø. 2015. "Dimorphic seeds of Salicornia ramosissima display contrasting germination responses under different salinities." Ecological Engineering 87, no. : 120-123.
Agriculture intensification in most European countries over the last 50 years resulted in a significant loss of biodiversity in agro-ecosystems. Attempts are now being made to restore originally complex agricultural landscapes by splitting large fields into smaller units using biocorridors, which are linear elements consisting of trees and shrubs. Such non-crop habitats can act as refuges both for insect predators that may potentially act as biocontrol agents and for insect pests. Bird cherry, Prunus padus (L.), is a winter host of a cereal pest and vector of cereal virus, the aphid Rhopalosiphum padi (L.), and is commonly planted in these biocorridors. The question arises, whether and to what extent the presence and distribution of P. padus in biocorridors influences the abundance of R. padi in nearby fields. This was addressed by monitoring spatial and temporal population dynamics of R. padi in two fields each adjacent to the newly established biocorridor but adjacent to parts of the corridor with different species compositions (only one with P. padus). Our results showed that this aphid colonized the field adjacent to that part of the corridor with P. padus but not the other field. In the second field colonization started close to one edge distant from the corridor and with no P. padus in the vicinity. After excluding the variability explained by spatial and temporal factors we also tested for the effect of environmental factors (weather conditions) on the remaining variability. Of the environmental factors tested, humidity accounted for most of the variability.
Olga Ameixa; Radka Dvořáková; Jan Šipoš; Pavel Kindlmann. Influence of species composition of biocorridors on the abundance of aphids in cereal fields. EUROPEAN JOURNAL OF ENVIRONMENTAL SCIENCES 2014, 4, 47 -52.
AMA StyleOlga Ameixa, Radka Dvořáková, Jan Šipoš, Pavel Kindlmann. Influence of species composition of biocorridors on the abundance of aphids in cereal fields. EUROPEAN JOURNAL OF ENVIRONMENTAL SCIENCES. 2014; 4 (1):47-52.
Chicago/Turabian StyleOlga Ameixa; Radka Dvořáková; Jan Šipoš; Pavel Kindlmann. 2014. "Influence of species composition of biocorridors on the abundance of aphids in cereal fields." EUROPEAN JOURNAL OF ENVIRONMENTAL SCIENCES 4, no. 1: 47-52.
DOI: http://dx.doi.org/10.3126/cs.v1i1.9586Conservation Science 2013 1(1), 53-54
Prakash Kumar Paudel; Uttam Babu Shrestha; Olga Mcc Ameixa; Vasileios Bontzorlos. The new journal for conservationists worldwide. Conservation Science 2013, 1, 53 -54.
AMA StylePrakash Kumar Paudel, Uttam Babu Shrestha, Olga Mcc Ameixa, Vasileios Bontzorlos. The new journal for conservationists worldwide. Conservation Science. 2013; 1 (1):53-54.
Chicago/Turabian StylePrakash Kumar Paudel; Uttam Babu Shrestha; Olga Mcc Ameixa; Vasileios Bontzorlos. 2013. "The new journal for conservationists worldwide." Conservation Science 1, no. 1: 53-54.
Since typically there are many predators feeding on most herbivores in natural communities, understanding multiple predator effects is critical for both community and applied ecology. Experiments of multiple predator effects on prey populations are extremely demanding, as the number of treatments and the amount of labour associated with these experiments increases exponentially with the number of species in question. Therefore, researchers tend to vary only presence/absence of the species and use only one (supposedly realistic) combination of their numbers in experiments. However, nonlinearities in density dependence, functional responses, interactions between natural enemies etc. are typical for such systems, and nonlinear models of population dynamics generally predict qualitatively different results, if initial absolute densities of the species studied differ, even if their relative densities are maintained. Therefore, testing combinations of natural enemies without varying their densities may not be sufficient. Here we test this prediction experimentally. We show that the population dynamics of a system consisting of 2 natural enemies (aphid predator Adalia bipunctata (L.), and aphid parasitoid, Aphidius colemani Viereck) and their shared prey (peach aphid, Myzus persicae Sulzer) are strongly affected by the absolute initial densities of the species in question. Even if their relative densities are kept constant, the natural enemy species or combination thereof that most effectively suppresses the prey may depend on the absolute initial densities used in the experiment. Future empirical studies of multiple predator – one prey interactions should therefore use a two-dimensional array of initial densities of the studied species. Varying only combinations of natural enemies without varying their densities is not sufficient and can lead to misleading results.
Olga M. C. C. Ameixa; Gerben J. Messelink; Pavel Kindlmann. Nonlinearities Lead to Qualitative Differences in Population Dynamics of Predator-Prey Systems. PLOS ONE 2013, 8, e62530 .
AMA StyleOlga M. C. C. Ameixa, Gerben J. Messelink, Pavel Kindlmann. Nonlinearities Lead to Qualitative Differences in Population Dynamics of Predator-Prey Systems. PLOS ONE. 2013; 8 (4):e62530.
Chicago/Turabian StyleOlga M. C. C. Ameixa; Gerben J. Messelink; Pavel Kindlmann. 2013. "Nonlinearities Lead to Qualitative Differences in Population Dynamics of Predator-Prey Systems." PLOS ONE 8, no. 4: e62530.
Alois Honěk; Zdenka Martinkova; Pavel Kindlmann; Olga M. C. C. Ameixa; Anthony F. G. Dixon. Long-term trends in the composition of aphidophagous coccinellid communities in Central Europe. Insect Conservation and Diversity 2013, 7, 55 -63.
AMA StyleAlois Honěk, Zdenka Martinkova, Pavel Kindlmann, Olga M. C. C. Ameixa, Anthony F. G. Dixon. Long-term trends in the composition of aphidophagous coccinellid communities in Central Europe. Insect Conservation and Diversity. 2013; 7 (1):55-63.
Chicago/Turabian StyleAlois Honěk; Zdenka Martinkova; Pavel Kindlmann; Olga M. C. C. Ameixa; Anthony F. G. Dixon. 2013. "Long-term trends in the composition of aphidophagous coccinellid communities in Central Europe." Insect Conservation and Diversity 7, no. 1: 55-63.
Olga Ameixa; Pavel Kindlm. Biodiversity Drifts in Agricultural Landscapes. Ecosystems Biodiversity 2011, 1 .
AMA StyleOlga Ameixa, Pavel Kindlm. Biodiversity Drifts in Agricultural Landscapes. Ecosystems Biodiversity. 2011; ():1.
Chicago/Turabian StyleOlga Ameixa; Pavel Kindlm. 2011. "Biodiversity Drifts in Agricultural Landscapes." Ecosystems Biodiversity , no. : 1.
Exclusion techniques, such as cages, are the most frequently used means of evaluating the efficiency of natural enemies in suppressing the abundance of their prey. The growth rates and peak densities of aphid populations within cages are usually larger than those in uncaged populations. However, cages change the microenvironment and prevent aphids from emigrating. Attempts were made to avoid the change in the microenvironment by using cages with a large (8mm) mesh. Here we test the hypothesis that because of the large mesh size, predators can easily penetrate into such cages during an experiment. Our results have shown that cages with a large (8mm) mesh size do not prevent predators from entering the cages and therefore cannot be used as "exclusion cages" for measuring the effect of predators on aphid numbers. Other methods of assessing the effectiveness of natural enemies in reducing the abundance of their prey, like removing the predators or direct observations, should be used instead.
Olga Ameixa; Pavel Kindlmann. Some exclusion cages do not exclude predators. EUROPEAN JOURNAL OF ENVIRONMENTAL SCIENCES 2011, 1, 67 -69.
AMA StyleOlga Ameixa, Pavel Kindlmann. Some exclusion cages do not exclude predators. EUROPEAN JOURNAL OF ENVIRONMENTAL SCIENCES. 2011; 1 (1):67-69.
Chicago/Turabian StyleOlga Ameixa; Pavel Kindlmann. 2011. "Some exclusion cages do not exclude predators." EUROPEAN JOURNAL OF ENVIRONMENTAL SCIENCES 1, no. 1: 67-69.
The ecological effects of introduced species on native organisms can sometimes, but not always be significant. The risks associated with invasive alien pests are difficult to quantify. This paper concentrates on the ecological effects of invasive insect predators that feed on pest insects, because the former may potentially affect the biological control of the latter. The literature indicates that invasive predatory insects generally are resistant to changes in environmental conditions, long-lived and voracious with a high reproductive rate, high dispersal ability, able to spread very rapidly across landscapes and exhibit phenotypic plasticity. Their colonization of patches of prey may induce native predators to leave, but the evidence that invaders negatively affect the abundance of the native species is scarce and not persuasive. Insect predators do not substantially affect the abundance of their prey, if the ratio of generation time of the predator to that of the prey is large (the generation time ratio hypothesis), therefore the effect of an invasion by long-lived alien predators on systems consisting of long-lived native predators and short-lived prey on the abundance of the prey is hard to detect.
Pavel Kindlmann; Olga M. C. C. Ameixa; Antony F. G. Dixon. Ecological effects of invasive alien species on native communities, with particular emphasis on the interactions between aphids and ladybirds. BioControl 2011, 56, 469 -476.
AMA StylePavel Kindlmann, Olga M. C. C. Ameixa, Antony F. G. Dixon. Ecological effects of invasive alien species on native communities, with particular emphasis on the interactions between aphids and ladybirds. BioControl. 2011; 56 (4):469-476.
Chicago/Turabian StylePavel Kindlmann; Olga M. C. C. Ameixa; Antony F. G. Dixon. 2011. "Ecological effects of invasive alien species on native communities, with particular emphasis on the interactions between aphids and ladybirds." BioControl 56, no. 4: 469-476.
Parasitoid females use several chemical cues to locate hosts. A better knowledge of how they respond to a complex of these cues in a small range may help us to understand how to manipulate the parasitoids in the field. Here, the response of the aphid parasitoid Aphidius colemani to a mixture of odours of synthetic and plant‐extracted nepetalactone (a component of aphid sex pheromone) and to (E)‐β‐farnesene (aphid alarm pheromone) was investigated. The behavioural responses of A. colemani to three semiochemical groups with different concentrations were studied in a square arena. Parasitoid females were significantly attracted by the semiochemicals, when their concentrations were high, in which case the females spent more time in squares with semiochemicals. The majority of females preferred plant‐extracted nepetalactone, when it was in high concentration, but they consistently did not respond to (E)‐β‐farnesene.
O. M. C. C. Ameixa; P. Kindlmann. Effect of synthetic and plant-extracted aphid pheromones on the behaviour of Aphidius colemani. Journal of Applied Entomology 2011, 136, 292 -301.
AMA StyleO. M. C. C. Ameixa, P. Kindlmann. Effect of synthetic and plant-extracted aphid pheromones on the behaviour of Aphidius colemani. Journal of Applied Entomology. 2011; 136 (4):292-301.
Chicago/Turabian StyleO. M. C. C. Ameixa; P. Kindlmann. 2011. "Effect of synthetic and plant-extracted aphid pheromones on the behaviour of Aphidius colemani." Journal of Applied Entomology 136, no. 4: 292-301.
When in 1824 the French mathematician Jean Baptiste Joseph Fourier suggested that the Earth’s temperature was slowly increasing it was not readily accepted. Some years later Svante Arrhenius (1896) and Guy Callendar (1938) supported this hypothesis and added that the planet’s temperature is increasing due to man’s activities, in particular the production of CO2, which has a crucial role in this matter. Several authors question how global warming is going to affect the planet and life forms. This question is addressed here, in particular how it is likely to influence aphids. Will they move to different locations, adapt to the change in conditions in their current habitat or go extinct? An analysis of the literature on the reactions to the sort of changes aphids will be exposed to in global change scenarios revealed that the results are contradictory, indicating positive, negative or no effect. The consensus is that it is extremely difficult to do experiments that simulate future conditions, especially when more than one parameter is considered. Nevertheless, the paleontological data provide a good record of how insects have responded to previous climatic changes. The evidence indicates that aphids are most likely to move to different geographical locations in order to track more suitable conditions, which may be more difficult than in the past because of habitat fragmentation and habitat loss.
Olga M.C.C. Ameixa. Aphids in a Changing World. Aphid Biodiversity under Environmental Change 2010, 21 -40.
AMA StyleOlga M.C.C. Ameixa. Aphids in a Changing World. Aphid Biodiversity under Environmental Change. 2010; ():21-40.
Chicago/Turabian StyleOlga M.C.C. Ameixa. 2010. "Aphids in a Changing World." Aphid Biodiversity under Environmental Change , no. : 21-40.
Olga Ameixa; Pavel Kindlmann. Agricultural policy-induced landscape changes: effects on carabid abundance and their biocontrol potential. European Journal of Entomology 2008, 105, 467 -476.
AMA StyleOlga Ameixa, Pavel Kindlmann. Agricultural policy-induced landscape changes: effects on carabid abundance and their biocontrol potential. European Journal of Entomology. 2008; 105 (3):467-476.
Chicago/Turabian StyleOlga Ameixa; Pavel Kindlmann. 2008. "Agricultural policy-induced landscape changes: effects on carabid abundance and their biocontrol potential." European Journal of Entomology 105, no. 3: 467-476.
The present study was carried out to evaluate the insecticidal properties of Drosophyllum lusitanicum (L.) Link, an insectivorous plant that is endemic to the western Iberian Peninsula and northwest Morocco. The insecticidal capacities of extracts from field-grown D. lusitanicum plants were evaluated using contact and feeding bioassays against female adults of Liriomyza trifolii (Burgess), one of the major pests of several floricultural and vegetable crops. In addition, the toxicity of the extract from in vitro cultures of D. lusitanicum was evaluated in contact bioassays. The results showed that extracts of D. lusitanicum have considerable insecticidal potential, particularly through contact application (100% mortality 1 d after treatment). Moreover, extracts from in vitro cultures had similar toxicity to those from field-grown plants. Extracts were analysed by gas chromatography coupled to mass spectrometry (GC-MS). The major constituent was 5-hydroxy-2-methyl-1,4-naphthoquinone (plumbagin), and its level was similar in extracts from field-grown plants (11.0 mg ml–1) and from in vitro cultures (8.2 mg ml–1). Although the results suggest that the insecticidal activity of extracts of D. lusitanicum is probably due to the presence of this naphthoquinone, further detailed research is required to identify other compounds that may be responsible for the activity.
S. Gonçalves; M. A. Gonçalves; O. Ameixa; J. M. F. Nogueira; A. Romano. Insecticidal activity of leaf extracts fromDrosophyllum lusitanicumagainstLiriomyza trifolii(Burgess) (Diptera: Agromyzidae). The Journal of Horticultural Science and Biotechnology 2008, 83, 653 -657.
AMA StyleS. Gonçalves, M. A. Gonçalves, O. Ameixa, J. M. F. Nogueira, A. Romano. Insecticidal activity of leaf extracts fromDrosophyllum lusitanicumagainstLiriomyza trifolii(Burgess) (Diptera: Agromyzidae). The Journal of Horticultural Science and Biotechnology. 2008; 83 (5):653-657.
Chicago/Turabian StyleS. Gonçalves; M. A. Gonçalves; O. Ameixa; J. M. F. Nogueira; A. Romano. 2008. "Insecticidal activity of leaf extracts fromDrosophyllum lusitanicumagainstLiriomyza trifolii(Burgess) (Diptera: Agromyzidae)." The Journal of Horticultural Science and Biotechnology 83, no. 5: 653-657.