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22 results for “Chrysomya”
Fig. 7 Habitus. a Chrysomya bezziana. b Cochliomyia hominivorax. c Wohlfahrtia magnifica. d in Morphology of the first instar larva of obligatory traumatic myiasis agents (Diptera: Calliphoridae, Sarcophagidae)
Fig. 7 Habitus. a Chrysomya bezziana. b Cochliomyia hominivorax. c Wohlfahrtia magnifica. d Lucilia cuprina. Abbreviations: a1–a7 abdominal segments 1–7, ad anal division, pc pseudocephalon, t1–t3 thoracic segments 1–3. Scale bar=0.1 mm
Fig. 1 in A new and earlier record of Chrysomya megacephala in South Africa, with notes on another exotic species, Calliphora vicina (Diptera: Calliphoridae)
Fig. 1. Distribution of Chrysomya megacephala in southern Africa, with date of first record for each site.
Fig. 2 in A new and earlier record of Chrysomya megacephala in South Africa, with notes on another exotic species, Calliphora vicina (Diptera: Calliphoridae)
Fig. 2. Distribution of Calliphora vicina in southern Africa, with date of first record for each site.
Data from: The evolution of sexually dimorphic cuticular hydrocarbons in blowflies (Diptera: Calliphoridae)Cuticular hydrocarbons of Australian Chrysomya (Diptera: Calliphoridae)
<p>Cuticular hydrocarbons (CHCs) are organic compounds found on the cuticles of all insects which can act as close-contact pheromones, while also providing a hydrophobic barrier to water loss. Given their widespread importance in sexual behaviour and survival, CHCs have likely contributed heavily to the adaptation and speciation of insects. Despite this, the patterns and mechanisms of their diversification have been studied in very few taxa. This dataset constitutes the first of CHCs in Australian <em>Chrysomya </em>blowflies. The data demonstrate that blowflies express an exceptional diversity of CHCs, which have diversified in a non-phylogenetic and punctuated manner, are species-specific, and sexually dimorphic. </p>
Data from: The evolution of sexually dimorphic cuticular hydrocarbons in blowflies (Diptera: Calliphoridae)Cuticular hydrocarbons of Australian Chrysomya (Diptera: Calliphoridae)
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Data from: The upper thermal tolerance for a Texas population of the hairy maggot blow fly Chrysomya rufifacies Macquart (Diptera: Calliphoridae)
<p>The hairy maggot blow fly (<i>Chrysomya rufifacies</i>: Macquart) is an invasive necrophagous fly found throughout the continental United States. <i>Chrysomya</i> <i>rufifacies</i> is of medical/veterinary, forensic, and ecological importance due to its ability to cause myiasis, colonize human remains, and displace native Diptera. However, little is known about their upper thermal tolerance, which could be used to better predict their invasion potential.</p> <p>We investigated the upper thermal tolerance of <i>C. rufifacies </i>exposed to different temperatures (20 – 45°C), times (1 – 6 h), and nutrients (no food or water, water only, or a food-water mixture) for both sexes and two age ranges (young = 6-8, old = 9-11 days post pupal emergence).</p> <p>As temperature or duration increased, the probability of knockdown increased (0 – 100% at 20 and 45°C and from 41 – 75% at 1 and 6 h), while the probability of survival decreased (99 – 2% at 20 and 45°C and from 75 – 28% at 1 and 6 h). The availability of nutrients increased thermal tolerance at moderate temperatures (40 and 42°C). Female flies were more thermally tolerant than males (probability of knockdown = 49% vs 58%; probability of survival = 58 % vs 46%). Thermal tolerance did not differ by age.</p> <p>These data reveal details about the upper thermal tolerance for a single population of <i>C. rufifacies</i>, and suggest that environmental and organismal factors ought to be considered in order to make meaningful predictions about the invasion potential of <i>C. rufifacies </i>in North America.</p>
Wing interference patterns of Chrysomya blowflies (Diptera: Calliphoridae)
<p>Wing interference patterns (WIPs) are stable structural colours displayed on insect wings which are only visible at specific viewing geometries and against certain backgrounds. These patterns are widespread among flies and wasps, and growing evidence suggests that they may function as species- and sex-specific mating cues in a range of taxa. As such, it is expected that WIPs should differ between species and show clear sexual dimorphisms. However, the true extent to which WIPs vary between species, sexes, and individuals is currently unclear, as previous studies have only taken a qualitative approach, without considering how WIPs might be perceived by the insect. Using multispectral digital imaging and a tentative model of blowfly colour vision, we provide the first quantitative dataset of inter- and intra-specific variation in WIPs across seven Australian species of the blowfly genus <i>Chrysomya</i>. These data suggest that WIPs have diversified substantially in blowflies as a result of either sexual or ecological selection.</p>
FIGURE 2 in An update of the blow flies (Diptera: Calliphoridae) of the Galápagos Islands, and first record of Chrysomya rufifacies (Macquart) from mainland Ecuador
FIGURE 2. Lucilia setosa (Darwin Island). A. Head, female, anterolateral view. B. Head, male, anterolateral view. C. Head, male, lateral view. D. Head, male anterior view. E–F. Male terminalia. E. Posterior view. F. Lateral view. G. Male sternite 5.
FIGURE 1. Lucilia deceptor. A in An update of the blow flies (Diptera: Calliphoridae) of the Galápagos Islands, and first record of Chrysomya rufifacies (Macquart) from mainland Ecuador
FIGURE 1. Lucilia deceptor. A. Head, female (Española), anterolateral view. B. Head, male (Bartolomé), anterolateral view. C. Head, male (Santa Fé), lateral view. D. Head, male (Bartolomé), anterior view. E–F. Male terminalia (Española). E. Posterior view. F. Lateral view. G. Male sternite 5 (Española).
FIGURE 4 in An update of the blow flies (Diptera: Calliphoridae) of the Galápagos Islands, and first record of Chrysomya rufifacies (Macquart) from mainland Ecuador
FIGURE 4. Lucilia sp. near pionia (Española Island). A. Head, female, anterolateral view. B. Head, male, anterolateral view. C. Head, male lateral view. D. Head, male, anterior view. E–F. Male terminalia. E. Posterior view. F. Lateral view. G. Male sternite 5.
FIGURE 3. Lucilia pionia. A in An update of the blow flies (Diptera: Calliphoridae) of the Galápagos Islands, and first record of Chrysomya rufifacies (Macquart) from mainland Ecuador
FIGURE 3. Lucilia pionia. A. Head, female (Fernandina), anterolateral view showing strong head protrusion. B. Head, female (Santa Cruz), anterolateral view showing weaker head protrusion. C. Head, male (Santa Cruz), lateral view. D. Head, male (Santiago), anterolateral view showing strong head protrusion. E. Head, male (Santa Cruz), anterolateral view showing weaker head protrusion. F. Head, male (Santa Cruz), anterior view. G–H. Male terminalia (Santa Cruz). G. Posterior view. H. Lateral view. I. Male sternite 5 (Santa Cruz).
FIGURA 1 in Morfologia E Duração Do Desenvolvimento Pós-Embrionário De Chrysomya Megacephala (Diptera: Calliphoridae) Em Condições De Laboratório
FIGURA 1: Esqueleto cefalofaríngeo de Chrysomya megacephala, vista lateral. A: Larva em primeiro instar (L1). B: Farado (L1/L2). C: Larva em segundo instar (L2). D: Farado (L2/L3). E: Larva em terceiro instar (L3). Legenda: A = maxila; B = mandíbula; C = esclerito hipostomal; D = esclerito hipofaringeano; e = depressão ocular; F = clípeo; G = arco clipeal; H = esclerito infrafaringeano; I = esclerito faringeano; J = incisão média; L = corno ventral; M = corno dorsal; N = esclerito dental; O = esclerito labial; P = esclerito acessório; a = maxila e mandíbula em formação.
FIGURA 2 in Morfologia E Duração Do Desenvolvimento Pós-Embrionário De Chrysomya Megacephala (Diptera: Calliphoridae) Em Condições De Laboratório
FIGURA 2: Alguns aspectos da morfologia externa de larvas de C. megacephala. A: Espiráculo anterior de larva em segundo instar. B: Espiráculo anterior de larva em terceiro instar. C: Banda de micro-espinhos do protórax. D: Espiráculo posterior de primeiro instar. E: Espiráculo posterior de farado (L1/L2). F: Espiráculo posterior de larva em segundo instar. F: Espiráculo posterior de farado (L2/L3). G: Espiráculo posterior de larva em terceiro instar.
Data from: Gene expression correlates of facultative predation in the blow fly Chrysomya rufifacies (Diptera: Calliphoridae)
Effects of intraguild predation (IGP) on omnivores and detritivores are relatively understudied when compared to work on predator guilds. Functional genetic work in IGP is even more limited, but its application can help answer a range of questions related to ultimate and proximate causes of this behavior. Here we integrate behavioral assays and transcriptomic analysis of facultative predation in a blow fly (Diptera: Calliphoridae) to evaluate the prevalence, effect, and correlated gene expression of facultative predation by the invasive species Chrysomya rufifacies. Field work observing donated human cadavers indicated facultative predation by C. rufifacies on the native blow fly Cochliomyia macellaria was rare under undisturbed conditions, owing in part to spatial segregation between species. Laboratory assays under conditions of starvation showed predation had a direct fitness benefit (i.e., survival) to the predator. As a genome is not available for C. rufifacies, a de novo transcriptome was developed and annotated using sequence similarity to Drosophila melanogaster. Under a variety of assembly parameters, several genes were identified as being differentially expressed between predators and non-predators of this species, including genes involved in cell-to-cell signaling, osmotic regulation, starvation responses, and dopamine regulation. Results of this work were integrated to develop a model of the processes and genetic regulation controlling facultative predation.
Supplementary material 2 from: Rodrigues-Filho SJM, dos Santos Lobato F, Medeiros de Abreu CH, Rebelo MT (2023) Where in Europe is Chrysomya albiceps? Modelling present and future potential distributions. NeoBiota 85: 81-99. https://doi.org/10.3897/neobiota.85.96687
Occurrence points of Chrysomya albiceps recorded from the scientific literature and in the GBIF database
Supplementary material 1 from: Rodrigues-Filho SJM, dos Santos Lobato F, Medeiros de Abreu CH, Rebelo MT (2023) Where in Europe is Chrysomya albiceps? Modelling present and future potential distributions. NeoBiota 85: 81-99. https://doi.org/10.3897/neobiota.85.96687
References acquired from the databases cited in the manuscript and consulted in the literature review to generate a dataset of geographic coordinates of the species Chrysomya albiceps
Data from: Gene expression correlates of facultative predation in the blow fly Chrysomya rufifacies (Diptera: Calliphoridae)
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Wing interference patterns of Chrysomya blowflies (Diptera: Calliphoridae)
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Data from: The upper thermal tolerance for a Texas population of the hairy maggot blow fly Chrysomya rufifacies Macquart (Diptera: Calliphoridae)
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Data from: Temperature-dependent development of the blow fly Chrysomya pinguis and its significance in estimating postmortem interval
Chrysomya pinguis (Walker) (Diptera: Calliphoridae) is an endemic Asiatic blow fly species of forensic importance. Chrysomya pinguis is one of the first species to colonize a corpse, especially in high altitude areas during spring and autumn when the ambient temperature is lower. Despite its potential for forensic investigations to estimate the minimum postmortem interval (PMImin), little is known about the development of C. pinguis. In this study, C. pinguis was collected from the Yangtze River Delta region of China and reared at seven constant temperatures between 16 to 34°C to investigate the effect of temperature on development duration, accumulated degree hours and larval body length of C. pinguis. Isomorphen and isomegalen diagrams for C. pinguis were generated using the results, and equations describing the variation in larval body length during development and the temperature-induced variation in development time were also obtained. Chrysomya pinguis can complete its life cycle at 16-34°C. The mean (± SD) developmental durations of C. pinguis from egg to adult at 16, 19, 22, 25, 28, 31 and 34°C were 811.0 ± 3.8, 544.8 ± 2.0, 379.8 ± 1.8, 306.7 ± 2.4, 250.0 ± 2.8, 203.2 ± 2.1 and 185.3 ± 1.6 h, respectively. The mean (± SE) developmental threshold temperature D0 and the thermal summation constant K of the whole developmental process of C. pinguis were estimated as 10.88 ± 0.21°C and 4256.50 ± 104.50 degree hours, respectively. This study provides fundamental development data for the use of C. pinguis to estimate PMImin.
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