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69 results for “Harmonia”
Responses of avian predators to polymorphic harlequin ladybird (Harmonia axyridis)
<p><span>Harlequin ladybird (<em>Harmonia axyridis</em>) shows high level of colour polymorphism. Particular forms differ in their colour combination, pattern and abundance.</span></p> <p><span>We tested the willingness of native, wild-caught passerines to attack and eat particular forms. We predicted that those forms that are more abundant in the wild are better protected, as they are more familiar to the predators. We compared the forms <em>novemdecimsignata</em> and <em>spectabilis</em>, which represent 97 % of individuals in the wild population, but importantly differ in their visual appearance (mostly orange vs. mostly black). Further, we examined three intermediate forms: <em>axyridis</em>, which is very scarce in the wild, and two forms not occurring in the wild – originating from laboratory breedings: <em>suturalis</em> and <em>aninkae</em>. As predators, we used great tit (<em>Parus major</em>), which is very aversive towards ladybirds, and tree sparrow (<em>Passer montanus</em>), which is quite willing to attack and even eat ladybirds. We compared their responses to particular ladybird forms, with artificially brown-painted ladybird to test for the effect of visual signal.</span></p> <p><span>We showed that both bird species attacked all forms of ladybird equally and usually very scarcely. The brown-painted <em>novemdecimsignata</em> form was attacked more often, showing that the visual appearance prevents birds from attacking any conspicuous colour combination. Sparrows tended to eat the attacked ladybirds of forms <em>novemdecimsignata</em>,<em> spectabilis </em>and brown painted. Scarce <em>axyridis</em> form and laboratory forms were very well protected from the attack, very likely due to neophobia.</span></p>
Fig. 4 in Multicoloured Asian lady beetle (Harmonia axyridis (Pallas, 1773)) (Coleoptera: Coccinellidae) for the first time in the fauna of Latvia
Fig. 4. Imago of Harmonia axyridis (Pall.)
Fig. 3 in Multicoloured Asian lady beetle (Harmonia axyridis (Pallas, 1773)) (Coleoptera: Coccinellidae) for the first time in the fauna of Latvia
Fig. 3. Imago and pupa of Harmonia axyridis (Pall.)
Juvenile hormone regulates the photoperiodic plasticity of elytra coloration in a ladybird Harmonia axyridis
<p><span>Many animals, including insects, exhibit plasticity of body color in response to environmental changes</span><span>. Varied expression of c</span><span>arotenoids, major cuticle pigments, significantly contributes to body color flexibility. However, the molecular mechanisms by which environmental cues regulate carotenoid expression remain largely unknown. In this study, we used the ladybird <em>Harmonia axyridis</em> as a model to investigate the photoperiodic-responsive plasticity of elytra coloration and its endocrine regulation. It was found that <em>H. axyridis</em> females under long-day conditions develop elytra that are much redder than those under short-day conditions, resulting from the differential accumulation of carotenoids. Exogenous hormone application and RNAi-mediated gene knockdown indicate that carotenoid deposition was directed through the juvenile hormone (JH) receptor-mediated canonical pathway. Moreover, we characterized an SR-BI/CD36 (SCRB) gene <em>SCRB10</em> as the carotenoid transporter responding to JH signaling and regulating the elytra coloration plasticity. Taken together, we propose that JH signaling transcriptionally regulates the carotenoid transporter gene for the photoperiodic coloration plasticity of elytra in the beetles, which reveals a novel role of the endocrine system in the regulation of carotenoid-associated animal body coloration under environmental stimuli.</span></p>
Data from: Direct and indirect effect of cannibalism and intraguild predation in the two sibling Harmonia ladybird beetles
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Juvenile hormone regulates the photoperiodic plasticity of elytra coloration in a ladybird Harmonia axyridis
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Responses of avian predators to polymorphic harlequin ladybird (Harmonia axyridis)
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Kellogg Biological Station site, station Treatment 1, standard levels of chemical inputs, conventional chisel plowed tillage, study of animal abundance of Harmonia axyridis in units of numberAdultsPerYellowStickyTrap on a yearly timescale
The EcoTrends project was established in 2004 by Dr. Debra Peters (Jornada Basin LTER, USDA-ARS Jornada Experimental Range) and Dr. Ariel Lugo (Luquillo LTER, USDA-FS Luquillo Experimental Forest) to support the collection and analysis of long-term ecological datasets. The project is a large synthesis effort focused on improving the accessibility and use of long-term data. At present, there are ~50 state and federally funded research sites that are participating and contributing to the EcoTrends project, including all 26 Long-Term Ecological Research (LTER) sites and sites funded by the USDA Agriculture Research Service (ARS), USDA Forest Service, US Department of Energy, US Geological Survey (USGS) and numerous universities. Data from the EcoTrends project are available through an exploratory web portal (http://www.ecotrends.info). This web portal enables the continuation of data compilation and accessibility by users through an interactive web application. Ongoing data compilation is updated through both manual and automatic processing as part of the LTER Provenance Aware Synthesis Tracking Architecture (PASTA). The web portal is a collaboration between the Jornada LTER and the LTER Network Office. The following dataset from Kellogg Biological Station (KBS) contains animal abundance of Harmonia axyridis measurements in numberAdultsPerYellowStickyTrap units and were aggregated to a yearly timescale.
Kellogg Biological Station site, station Treatment 2, standard levels of chemical inputs, no tillage, study of animal abundance of Harmonia axyridis in units of numberAdultsPerYellowStickyTrap on a yearly timescale
The EcoTrends project was established in 2004 by Dr. Debra Peters (Jornada Basin LTER, USDA-ARS Jornada Experimental Range) and Dr. Ariel Lugo (Luquillo LTER, USDA-FS Luquillo Experimental Forest) to support the collection and analysis of long-term ecological datasets. The project is a large synthesis effort focused on improving the accessibility and use of long-term data. At present, there are ~50 state and federally funded research sites that are participating and contributing to the EcoTrends project, including all 26 Long-Term Ecological Research (LTER) sites and sites funded by the USDA Agriculture Research Service (ARS), USDA Forest Service, US Department of Energy, US Geological Survey (USGS) and numerous universities. Data from the EcoTrends project are available through an exploratory web portal (http://www.ecotrends.info). This web portal enables the continuation of data compilation and accessibility by users through an interactive web application. Ongoing data compilation is updated through both manual and automatic processing as part of the LTER Provenance Aware Synthesis Tracking Architecture (PASTA). The web portal is a collaboration between the Jornada LTER and the LTER Network Office. The following dataset from Kellogg Biological Station (KBS) contains animal abundance of Harmonia axyridis measurements in numberAdultsPerYellowStickyTrap units and were aggregated to a yearly timescale.
Kellogg Biological Station site, station Treatment 3, organic-based low chemical input (banded herbicide, starter N), winter leguminous crop, annual tillage and post-planting cultivation, study of animal abundance of Harmonia axyridis in units of numberAdultsPerYellowStickyTrap on a yearly timescale
The EcoTrends project was established in 2004 by Dr. Debra Peters (Jornada Basin LTER, USDA-ARS Jornada Experimental Range) and Dr. Ariel Lugo (Luquillo LTER, USDA-FS Luquillo Experimental Forest) to support the collection and analysis of long-term ecological datasets. The project is a large synthesis effort focused on improving the accessibility and use of long-term data. At present, there are ~50 state and federally funded research sites that are participating and contributing to the EcoTrends project, including all 26 Long-Term Ecological Research (LTER) sites and sites funded by the USDA Agriculture Research Service (ARS), USDA Forest Service, US Department of Energy, US Geological Survey (USGS) and numerous universities. Data from the EcoTrends project are available through an exploratory web portal (http://www.ecotrends.info). This web portal enables the continuation of data compilation and accessibility by users through an interactive web application. Ongoing data compilation is updated through both manual and automatic processing as part of the LTER Provenance Aware Synthesis Tracking Architecture (PASTA). The web portal is a collaboration between the Jornada LTER and the LTER Network Office. The following dataset from Kellogg Biological Station (KBS) contains animal abundance of Harmonia axyridis measurements in numberAdultsPerYellowStickyTrap units and were aggregated to a yearly timescale.
Kellogg Biological Station site, station Treatment 4, certified oganic, no chemical inputs, annual tillage, rotary-hoed to control weeds, study of animal abundance of Harmonia axyridis in units of numberAdultsPerYellowStickyTrap on a yearly timescale
The EcoTrends project was established in 2004 by Dr. Debra Peters (Jornada Basin LTER, USDA-ARS Jornada Experimental Range) and Dr. Ariel Lugo (Luquillo LTER, USDA-FS Luquillo Experimental Forest) to support the collection and analysis of long-term ecological datasets. The project is a large synthesis effort focused on improving the accessibility and use of long-term data. At present, there are ~50 state and federally funded research sites that are participating and contributing to the EcoTrends project, including all 26 Long-Term Ecological Research (LTER) sites and sites funded by the USDA Agriculture Research Service (ARS), USDA Forest Service, US Department of Energy, US Geological Survey (USGS) and numerous universities. Data from the EcoTrends project are available through an exploratory web portal (http://www.ecotrends.info). This web portal enables the continuation of data compilation and accessibility by users through an interactive web application. Ongoing data compilation is updated through both manual and automatic processing as part of the LTER Provenance Aware Synthesis Tracking Architecture (PASTA). The web portal is a collaboration between the Jornada LTER and the LTER Network Office. The following dataset from Kellogg Biological Station (KBS) contains animal abundance of Harmonia axyridis measurements in numberAdultsPerYellowStickyTrap units and were aggregated to a yearly timescale.
Kellogg Biological Station site, station Treatment 5, Poplar trees (fallow 2008), planted on a 10-year rotation cycle, study of animal abundance of Harmonia axyridis in units of numberAdultsPerYellowStickyTrap on a yearly timescale
The EcoTrends project was established in 2004 by Dr. Debra Peters (Jornada Basin LTER, USDA-ARS Jornada Experimental Range) and Dr. Ariel Lugo (Luquillo LTER, USDA-FS Luquillo Experimental Forest) to support the collection and analysis of long-term ecological datasets. The project is a large synthesis effort focused on improving the accessibility and use of long-term data. At present, there are ~50 state and federally funded research sites that are participating and contributing to the EcoTrends project, including all 26 Long-Term Ecological Research (LTER) sites and sites funded by the USDA Agriculture Research Service (ARS), USDA Forest Service, US Department of Energy, US Geological Survey (USGS) and numerous universities. Data from the EcoTrends project are available through an exploratory web portal (http://www.ecotrends.info). This web portal enables the continuation of data compilation and accessibility by users through an interactive web application. Ongoing data compilation is updated through both manual and automatic processing as part of the LTER Provenance Aware Synthesis Tracking Architecture (PASTA). The web portal is a collaboration between the Jornada LTER and the LTER Network Office. The following dataset from Kellogg Biological Station (KBS) contains animal abundance of Harmonia axyridis measurements in numberAdultsPerYellowStickyTrap units and were aggregated to a yearly timescale.
Kellogg Biological Station site, station Treatment 6, Continuous alfalfa (wheat 2008), study of animal abundance of Harmonia axyridis in units of numberAdultsPerYellowStickyTrap on a yearly timescale
The EcoTrends project was established in 2004 by Dr. Debra Peters (Jornada Basin LTER, USDA-ARS Jornada Experimental Range) and Dr. Ariel Lugo (Luquillo LTER, USDA-FS Luquillo Experimental Forest) to support the collection and analysis of long-term ecological datasets. The project is a large synthesis effort focused on improving the accessibility and use of long-term data. At present, there are ~50 state and federally funded research sites that are participating and contributing to the EcoTrends project, including all 26 Long-Term Ecological Research (LTER) sites and sites funded by the USDA Agriculture Research Service (ARS), USDA Forest Service, US Department of Energy, US Geological Survey (USGS) and numerous universities. Data from the EcoTrends project are available through an exploratory web portal (http://www.ecotrends.info). This web portal enables the continuation of data compilation and accessibility by users through an interactive web application. Ongoing data compilation is updated through both manual and automatic processing as part of the LTER Provenance Aware Synthesis Tracking Architecture (PASTA). The web portal is a collaboration between the Jornada LTER and the LTER Network Office. The following dataset from Kellogg Biological Station (KBS) contains animal abundance of Harmonia axyridis measurements in numberAdultsPerYellowStickyTrap units and were aggregated to a yearly timescale.
Kellogg Biological Station site, station Treatment 7, native successional treatment, abandoned after spring plowing in 1989, study of animal abundance of Harmonia axyridis in units of numberAdultsPerYellowStickyTrap on a yearly timescale
The EcoTrends project was established in 2004 by Dr. Debra Peters (Jornada Basin LTER, USDA-ARS Jornada Experimental Range) and Dr. Ariel Lugo (Luquillo LTER, USDA-FS Luquillo Experimental Forest) to support the collection and analysis of long-term ecological datasets. The project is a large synthesis effort focused on improving the accessibility and use of long-term data. At present, there are ~50 state and federally funded research sites that are participating and contributing to the EcoTrends project, including all 26 Long-Term Ecological Research (LTER) sites and sites funded by the USDA Agriculture Research Service (ARS), USDA Forest Service, US Department of Energy, US Geological Survey (USGS) and numerous universities. Data from the EcoTrends project are available through an exploratory web portal (http://www.ecotrends.info). This web portal enables the continuation of data compilation and accessibility by users through an interactive web application. Ongoing data compilation is updated through both manual and automatic processing as part of the LTER Provenance Aware Synthesis Tracking Architecture (PASTA). The web portal is a collaboration between the Jornada LTER and the LTER Network Office. The following dataset from Kellogg Biological Station (KBS) contains animal abundance of Harmonia axyridis measurements in numberAdultsPerYellowStickyTrap units and were aggregated to a yearly timescale.
Data from: Complementarity of statistical treatments to reconstruct worldwide routes of invasion: the case of the Asian ladybird Harmonia axyridis
Inferences about introduction histories of invasive species remain challenging because of the stochastic demographic processes involved. Approximate Bayesian computation (ABC) can help to overcome these problems, but such method requires a prior understanding of population structure over the study area, necessitating the use of alternative methods and an intense sampling design. In this study, we made inferences about the worldwide invasion history of the ladybird Harmonia axyridis by various population genetics statistical methods, using a large set of sampling sites distributed over most of the species' native and invaded areas. We evaluated the complementarity of the statistical methods and the consequences of using different sets of site samples for ABC inferences. We found that the H. axyridis invasion has involved two bridgehead invasive populations in North America, which have served as the source populations for at least six independent introductions into other continents. We also identified several situations of genetic admixture between differentiated sources. Our results highlight the importance of coupling ABC methods with more traditional statistical approaches. We found that the choice of site samples could affect the conclusions of ABC analyses comparing possible scenarios. Approaches involving independent ABC analyses on several sample sets constitute a sensible solution, complementary to standard quality controls based on the analysis of pseudo-observed datasets, to minimize erroneous conclusions. This study provides biologists without expertise in this area with detailed methodological and conceptual guidelines for making inferences about invasion routes when dealing with a large number of sampling sites and complex population genetic structures.
Data from: The evolution of chemical defenses along invasion routes: Harmonia axyridis Pallas (Coccinellidae: Coleoptera) as a case study
The Evolution of Increased Competitive Ability (EICA) hypothesis (Blossey & Nötzold, 1995) postulates that escaping from coevolved enemies increases invaders fitness by energy reallocation from defenses and immunity to growth and reproduction. In this context, we evaluated the evidence of evolutionary change in invasive populations of Harmonia axyridis Pallas (Coccinellidae: Coleoptera). We measured egg defenses – cocktail of hydrocarbons on the egg's surface flagging egg toxicity, and the concentration of the main alkaloid harmonine - in individuals from three populations along the invasion route (Japan: native, USA: introduced more than 30 years ago, South Africa: introduced in the early 2000s) in a common garden experiment. Our results support the EICA hypothesis: we found changes along the invasion route in the profiles of the hydrocarbons coating the eggs' surface, and a decrease in the concentration of harmonine in eggs from the most recent invasive South African population compared to the long established in the USA and the native Japanese ones.
Data from: Rapid increase in dispersal during range expansion in the invasive ladybird Harmonia axyridis
The evolutionary trajectories associated with demographic, genetic and spatial disequilibrium have become an issue of growing interest in population biology. Invasive species provide unique opportunities to explore the impact of recent range expansion on life-history traits, making it possible to test for a spatial arrangement of dispersal abilities along the expanding range, in particular. We carried out controlled experiments in laboratory conditions to test the hypothesis of an increase in dispersal capacity with range expansion in Harmonia axyridis, a ladybird that has been invading Europe since 2001. We found a marked increase in the flight speed of the insects from the core to the front of the invasion range in two independent sampling transects. By contrast, we found that two other traits associated with dispersal (endurance and motivation to fly off) did not follow the same spatial gradient. Our results provide a striking illustration of the way in which predictable directional genetic changes may occur rapidly for some traits associated with dispersal during biological invasions. We discuss the consequences of our results for invasion dynamics and the evolutionary outcomes of spatially expanding populations.
Fig. 2 in Wind Turbines as Overwintering Sites Attractive to an Invasive Lady Beetle,Harmonia axyridisPallas (Coleoptera: Coccinellidae)
Fig. 2. Geographical distribution of Harmonia axyridis aggregations on wind turbines (black) and wind direction (grey), with mean vectors and 95% confidence limits.
Fig. 1 in Wind Turbines as Overwintering Sites Attractive to an Invasive Lady Beetle,Harmonia axyridisPallas (Coleoptera: Coccinellidae)
Fig. 1. Points on a wind turbine where temperatures were measured (A, 1 - turbine wall, 2 - steel turbine base, 3 - plastic screw cover, 4 - concrete base, 5 - foundations, 6 - ground near each turbine) and places where Harmonia axyridis adults aggregated (B, 1 – plastic screw cover, 2 - concrete base below plastic screw cover, 3 - corner between steel turbine and concrete base, 4 - corner between base and foundation).
Supplementary material 1 from: Zach P, Panigaj Ľ, Honěk A, Nedvěd O, Kulfan J, Martinková Z, Selyemová D, Viglášová S, Roy H (2014) The invasion history, distribution and colour pattern forms of the harlequin ladybird beetle Harmonia axyridis (Pall.) (Coleoptera, Coccinellidae) in Slovakia, Central Europe. ZooKeys 412: 89-102. https://doi.org/10.3897/zookeys.412.6587
Records of Harmonia axyridis in Slovakia: Explanation note: There are records from 2008 to 2012; years 2008 and 2009 marked in bold. The localities (sites of collection) are arranged in alphabetical order. Indicated are the numeric code of the mapping square (see Fig. 1), year of the first record and name of observer. Data on absence of the species are indicated by subsequent records of the species in the same squares or near squares from which it had not previously been recorded (e.g. 2008 – no record, 2009 – first record).
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