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17 results for “Calopteryx”
Fig. 1 in Change Of Morphometric And Allometric Patterns On Wings Of Banded Demoiselle (Calopteryx Splendens) Males In Case Of Ecologically Different Watercourse Types
Fig. 1. The typical appearance of watercourse types in Northeast Hungary (A = creek, B = brook, C = stream, D = little river, E = medial river). (Photo: Miskolczi, M.)
Fig. 5 in Change Of Morphometric And Allometric Patterns On Wings Of Banded Demoiselle (Calopteryx Splendens) Males In Case Of Ecologically Different Watercourse Types
Fig. 5. PCA with watercourse type, for fore and hind wing (1. component = 77.66%; 2. component = 11.70%) (filled symbols: fore wing, empty symbols: hind wing). Symbols:
Fig. 2 in Change Of Morphometric And Allometric Patterns On Wings Of Banded Demoiselle (Calopteryx Splendens) Males In Case Of Ecologically Different Watercourse Types
Fig. 2. Measuring points on the right fore wing of Calopteryx splendens males (A = landmarks related to size and shape measurements, B = landmarks related to measurements on
Fig. 3 in Nuevos datos sobre la distribución de Calopteryx haemorrhoidalis (Vander Linden, 1825) (Odonata: Calopterygidae) en el noroeste ibérico (Castilla y León-Galicia, España).
Fig. 3.- Hembra de C. haemorrhoidalis. Río Tormes, Fermoselle - Villarino de los Aires (Zamora-Salamanca). 04/07/2018. Foto: Miguel Rodríguez Esteban.
Fig. 1 in New record of Calopteryx xanthostoma (Charpentier, 1825) in Ourense, northwest of Spain (Odonata: Calopterygidae).
Fig. 1.- Calopteryx xanthostoma (Charpentier, 1825) perched on the vegetation of the Miño River right bank.
Fig. 2 in Nuevos datos sobre la distribución de Calopteryx haemorrhoidalis (Vander Linden, 1825) (Odonata: Calopterygidae) en el noroeste ibérico (Castilla y León-Galicia, España).
Fig. 2.- Hábitat de C. haemorrhoidalis en el río Sil a su paso por Toral de los Vados (León). Foto: Víctor Salvador Vilariño.
Capture-mark-recapture of Calopteryx exul in 2011
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Phenotypic variation in male Calopteryx splendens damselflies: The role of wing pigmentation and body size in thermoregulation
<p class="ListParagraph1">For an ectothermic insect, its color and size are important determinants of body temperature: dark colors absorb heat more efficiently, while larger bodies require more heat to reach a certain temperature. These dark colors are expressed using melanin, which has been intimately linked with an insect's thermoregulatory capabilities. Melanin is also linked with immune defense and is often used as a secondary sexual character in insects. There is a potential trade-off situation between thermoregulatory capabilities, immune defence and secondary sexual characters, all of which use melanin. Some <i>Calopteryx</i> damselflies, such as <i>Calopteryx splendens</i>, have melanin-based wing pigmentation that is sexually selected and drives intra- and interspecific territorial aggressions. Our goal was to experimentally study how the wing pigmentation and body size of <i>C. splendens</i> males affect their thermoregulation and especially their ability to become active after being cooled down. Our results are in line with our hypotheses showing that (<i>i</i>) individuals with larger wing spots had significantly faster activation times than those with smaller wing spots, and (<i>ii</i>) individuals with larger body size had significantly slower activation times than those with smaller body size. Both variables showed an interaction and thus are important in damselfly warm up and activation. We discuss the role wing pigmentation and thermoregulation can have on the behavioral patterns observed in <i>Calopteryx</i> species.</p>
Thermal response of two sexually dimorphic Calopteryx (Odonata) over an ambient temperature range
<p>1. Organisms may internally or behaviourally regulate their body temperatures or conform to the ambient air temperatures. Previous evidence is mixed on whether wing pigmentation influences thermoregulation in various odonates.</p> <p>2. We investigated the thermal response of sympatric North American Calopteryx aequabilis and Calopteryx maculata with a thermal imaging study across a 25 °C ambient temperature range.</p> <p>3. We found that regressions of thorax temperature on ambient temperature standardised by species had similar slopes for male and female C. maculata, but females were consistently 1.5 °C warmer than males. In contrast, the sexes of C. aequabilis differed in slope, with C. aequabilis females having a slope less than 1.0 and males having a slope greater than 1.0.</p> <p>4. We found that regressions of thorax temperature on ambient temperature standardised by sex had similar slopes for males and females of both species, but C. maculata females were consistently 2.1 °C warmer than C. aequabilis females.</p> <p>5. Given that C. aequabilis is strongly sexually dimorphic in pigment, but C. maculata is not, our findings suggest that wing pigmentation may influence thermal response rate in sympatric populations of both species.</p>
Phenotypic variation in male Calopteryx splendens damselflies: The role of wing pigmentation and body size in thermoregulation
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Data from: Predator-mediated natural selection on the wings of the damselfly Calopteryx splendens: differences in selection among trait types
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Thermal response of two sexually dimorphic Calopteryx (Odonata) over an ambient temperature range
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Fig. 6 in Change Of Morphometric And Allometric Patterns On Wings Of Banded Demoiselle (Calopteryx Splendens) Males In Case Of Ecologically Different Watercourse Types
Fig. 6. Patterns of allometric features at different watercourse types. White bars = no allometry, grey bars = isoallometry, black bars = hyperallometry
Fig. 1 in Nuevos datos sobre la distribución de Calopteryx haemorrhoidalis (Vander Linden, 1825) (Odonata: Calopterygidae) en el noroeste ibérico (Castilla y León-Galicia, España).
Fig. 1.- Macho de C. haemorrhoidalis. Río Sil, Toral de los Vados (León). 24/06/2017. Foto: Víctor Salvador Vilariño.
Calopteryx splendens personality in the wild
<p>We studied nine behavioural traits, in the damselfly <i>Calopteryx splendens,</i> from an array of three experiments: (i) courtship, (ii) aggressiveness and (iii) boldness, and calculated their repeatability. The behaviours were measured twice, in two different contexts: (i) undisturbed territory and (ii) partially deteriorated territory. Traits related to courtship and boldness were all repeatable across the two contexts. Among aggressive behaviours only one trait (number of hits) <span>was repeatable. </span></p>
Calopteryx splendens personality in the wild
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Calopteryx splendens
<u>Source</u>: Flickr <br><u>4DCity URL</u>: <a href="https://4dcity.org/imgupload/1665391734.5408.jpg">https://4dcity.org/imgupload/1665391734.5408.jpg</a> <br><u>Original Image URL</u>: <a href="https://live.staticflickr.com/1921/43708802120_795055d120_m.jpg">https://live.staticflickr.com/1921/43708802120_795055d120_m.jpg</a> <br><br><u>Image-Metadata:</u><br>Filename: 1665391734.5408.jpg<br>Image Dimensions: 240x160<br>Megapixels: 0.04 MP<br>Filesize: 14.42 KB<br>
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