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61 results for “Argiope”
Fig. 3 in Distribución de las arañas del género Argiope Audouin, 1826 en la provincia de Málaga, España (Chelicerata, Arachnida, Araneae)
Fig. 3.- Argiope lobata (Pallas, 1772). a.- Distribución en la provincia de Málaga. b.- Distribución mensual. c.- Distribución altitudinal. d.- Pisos bioclimáticos. e.- Ombroclimas.
Fig. 2 in Distribución de las arañas del género Argiope Audouin, 1826 en la provincia de Málaga, España (Chelicerata, Arachnida, Araneae)
Fig. 2.- Argiope bruennichi (Scopoli, 1772). a.- Distribución en la provincia de Málaga. b.- Distribución mensual. c.- Distribución altitudinal. d.- Pisos bioclimáticos. e.- Ombroclimas.
Figure 5 in Predator exposure and size-related variation in web-building and web-decorating behavior in Argiope appensa
Figure 5. Frequency distribution of cruciate-patterned web decorations from spiders in Rota and Guam. Stacks represent size class of spiders.
Figure 1 in Predator exposure and size-related variation in web-building and web-decorating behavior in Argiope appensa
Figure 1. Web decoration in A. appensa: (A) close-up of web decoration; (B) linear/ diagonal pattern; (C) cruciate pattern.
Figure 3 in Predator exposure and size-related variation in web-building and web-decorating behavior in Argiope appensa
Figure 3. Variation in web-building behavior in A. appensa between locations and between spider size class categories, (A) web diameter, SNK: small <medium <large; and (B) web decoration length, SNK: small = medium <large. Dashed lines represent the mean for each location with all the size classes pooled.
Linked collectors and determiners for: Morphology and taxonomy of the orb-weaving spider genus Mecynogea, and a peculiar species of Argiope (Araneae, Araneidae).
Natural history specimen data linked to collectors and determiners held within, "Morphology and taxonomy of the orb-weaving spider genus Mecynogea, and a peculiar species of Argiope (Araneae, Araneidae)". Claims or attributions were made on Bionomia by volunteer Scribes, <a href="https://bionomia.net/dataset/1cf12f99-65ce-4f59-a455-0008d79df52d">https://bionomia.net/dataset/1cf12f99-65ce-4f59-a455-0008d79df52d</a> using specimen data from the dataset aggregated by the Global Biodiversity Information Facility, <a href="https://gbif.org/dataset/1cf12f99-65ce-4f59-a455-0008d79df52d">https://gbif.org/dataset/1cf12f99-65ce-4f59-a455-0008d79df52d</a>. Formatted as a Frictionless Data package.
Figure 3 in Web decoration polymorphism in Argiope Audouin, 1826 (Araneidae) spiders: ontogenetic and interspecific variation
Figure 3. Percentage of spiders from the three species surveyed found on decorated webs sorted by size class: A, below 4.0 mm; B, 4.0–5.9 mm; C, 6.0–7.9 mm; D, 8.0 mm. The frequency of decorations in adult Argiope keyserlingi was taken from Herberstein (2000).
Figure 2 in Web decoration polymorphism in Argiope Audouin, 1826 (Araneidae) spiders: ontogenetic and interspecific variation
Figure 2. Schematic of the Y-maze used to test the response of prey to cruciate and linear web decorations.
Figure 5 in Web decoration polymorphism in Argiope Audouin, 1826 (Araneidae) spiders: ontogenetic and interspecific variation
Figure 5. Mean decoration length (¡SE) in food-deprived (grey bars) and food-supplemented (white bars) spiders.
Figure 4 in Web decoration polymorphism in Argiope Audouin, 1826 (Araneidae) spiders: ontogenetic and interspecific variation
Figure 4. Decoration form by juvenile size class: A, below 4.0 mm; B, 4.0–5.9 mm; C, 6.0–7.9 mm; D, 8.0 mm. (a) Argiope keyserlingi; (b) A. aetherea; (c) A. picta.
Figure 1 in Web decoration polymorphism in Argiope Audouin, 1826 (Araneidae) spiders: ontogenetic and interspecific variation
Figure 1. Map of Queensland showing the approximate ranges of Argiope aetherea and A. picta from this study.
Figure 4 in Predator exposure and size-related variation in web-building and web-decorating behavior in Argiope appensa
Figure 4. Relationship between web diameter and web decoration length on Rota and Guam.
Figure 2 in Predator exposure and size-related variation in web-building and web-decorating behavior in Argiope appensa
Figure 2. Frequency distribution of spider body size categories in Rota and Guam.
Discoid decorations function to shield juvenile Argiope spiders from avian predator attacks
Decorating behavior is common in various animal taxa and serves a variety of functions from camouflage to communication. One predominant function cited for decoration is to avoid predators. Conspicuous, disc-like (discoid) silk decorations spun by orb-web Argiope juvenile spiders are hypothesized, among others, to defend spiders against visual predators by concealing spider outlines on the web, deflecting attacks, shielding them from view or masquerading as bird-droppings. However, the direct evidence is limited for a specific mechanism by which discoid decorations may deter predators. Here we evaluate the mechanisms by which discoid decorations may defend Argiope juveniles against naïve chicks. Using visual modelling, we show that avian predators are able to distinguish spiders from discoid decorations. Using chick predation experiments, we found that the naïve chicks readily pecked any objects, ruling out the possibility of their neophobia. Significantly more chicks attacked spiders when they were exposed to chicks, regardless of whether their webs had discoid decorations, but few chicks attacked spiders when they were behind the decorations. We also found that significantly few chicks attacked decorations when spiders were absent or behind the decorations. We thus conclude that discoid decorations function to deter avian predators by shielding the spider from view or distracting, not by deflecting attacks, concealing the spider's outline or masquerading as bird-droppings. This study sheds light on the study of other similar anti-predator strategies, in a wide range of spider species and other animals that use decorating strategies. --
Discoid decorations function to shield juvenile Argiope spiders from avian predator attacks
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FIGURE 2 in Abundance changes in orb-weaver spider communities at the edge of the Argiope bruennichi expansion range
FIGURE 2. Scatter plots and Spearman rank-order correlation (RS) between Argiope bruennichi and Araneus quadratus in the three regions of Poland.
FIGURE 1 in Abundance changes in orb-weaver spider communities at the edge of the Argiope bruennichi expansion range
FIGURE 1. Comparison of densities of Argiope bruennichi (Ab) and Araneus quadratus (Aq) in three regions of Poland during 2009–2012. Points are means, boxes are SEs, and whiskers are SDs.
Supplementary material 6 from: Agnarsson I, LeQuier SM, Kuntner M, Cheng R-C, Coddington JA, Binford G (2016) Phylogeography of a good Caribbean disperser: Argiope argentata (Araneae, Araneidae) and a new 'cryptic' species from Cuba. ZooKeys 625: 25-44. https://doi.org/10.3897/zookeys.625.8729
Table S3 : Explanation note: Genetic and Geographic distances among all ingroup specimens used in generating Figure 2.
Supplementary material 5 from: Agnarsson I, LeQuier SM, Kuntner M, Cheng R-C, Coddington JA, Binford G (2016) Phylogeography of a good Caribbean disperser: Argiope argentata (Araneae, Araneidae) and a new 'cryptic' species from Cuba. ZooKeys 625: 25-44. https://doi.org/10.3897/zookeys.625.8729
Table S2 : Explanation note: Results of Fst and Kxy (average number of nucleotide differences) analyses among specimens from all islands and mainland. The Cuban specimens, here described as a new species, stand out in both analyses indicating genetic isolation and divergence.
Supplementary material 2 from: Agnarsson I, LeQuier SM, Kuntner M, Cheng R-C, Coddington JA, Binford G (2016) Phylogeography of a good Caribbean disperser: Argiope argentata (Araneae, Araneidae) and a new 'cryptic' species from Cuba. ZooKeys 625: 25-44. https://doi.org/10.3897/zookeys.625.8729
Figure S2 : Explanation note: Bayesian phylogeny based on analysis in MrBayes using the two nuclear genes.
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