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513 results for “dragonflies”
Data from: Stuck in the mud: experimental taphonomy and computed tomography demonstrate the critical role of sediment in stabilizing the three-dimensional external morphology of arthropod carcasses during early fossil diagenesis - DRAGONFLY sessions
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Occurrences and R code for: Dynamic distribution modeling of the Swamp Tigertail dragonfly Synthemis eustalacta (Odonata: Anisoptera: Synthemistidae) over a 20-year bushfire regime
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Dataset for: Molecular diversity of dragonflies in high altitude Andean lakes through DNA barcoding
<p>Genetic and morphological identification of dragonflies' larvae species in three high elevation Andean tropical lakes was done using DNA barcoding of the cytochrome oxidase 1 gene (COI). Phylogeny allowed inferring the evolutionary relationships of at least 5 species (from 74 samples) that belong to two different families within the Odonata order.</p>
Figure 5 in Distribution and composition of Dragonfly and Damselfly species (Odonata) of the upper Rio das Velhas, Ouro Preto, Minas Gerais State, Brazil
Figure 5. Dorsolateral view of live individual of Heteragrion cauei Ávila-Júnior et al., 2017 in life. Photo: W.F. Ávila-Júnior.
Figure 4 in Distribution and composition of Dragonfly and Damselfly species (Odonata) of the upper Rio das Velhas, Ouro Preto, Minas Gerais State, Brazil
Figure 4. Odonata species accumulation curves: (A) collector method; (B) rarefaction curve. (vertical bars represent ± 2 standard deviations).
Figure 2 in Distribution and composition of Dragonfly and Damselfly species (Odonata) of the upper Rio das Velhas, Ouro Preto, Minas Gerais State, Brazil
Figure 2. Some species of the suborder Anisoptera collected in the upper Rio das Velhas, Parque Natural Municipal Cachoeira das Andorinhas, Ouro Preto Municipality, Minas Gerais State, Brazil: (a) Erythrodiplax acantha, (b) Elasmothemis alcebiadesi, (c) Zonophora campanulata machadoi, (d) Castoraeschna colorata, (e) Coryphaeschna perrensi and (f) Macrothemis heteronycha.
Figure 1 in Distribution and composition of Dragonfly and Damselfly species (Odonata) of the upper Rio das Velhas, Ouro Preto, Minas Gerais State, Brazil
Figure 1. Map showing the sampled sites in the, Parque Natural Municipal Cachoeira das Andorinhas (green line), Ouro Preto Municipality, Minas Gerais State, Brazil.
Figure 3 in Distribution and composition of Dragonfly and Damselfly species (Odonata) of the upper Rio das Velhas, Ouro Preto, Minas Gerais State, Brazil
Figure 3. Some species of the suborder Zygoptera collected in the upper Rio das Velhas, Parque Natural Municipal Cachoeira das Andorinhas, Ouro Preto Municipality, Minas Gerais State, Brazil: (a) Heteragrion cauei, (b) Heteragrion rogertaylori, (c) Telebasis carmesina, (d) Heteragrion gracile, (e) Oxyagrion basale, (f) Hetaerina longipes, (g) Minagrion waltheri and (h) Mnesarete guttifera.
Trait overdispersion in dragonflies reveals the role and drivers of competition in community assembly across space and season
<p>Our understanding of how biotic interactions influence animal community assembly is largely restricted to local systems due to the difficulty of obtaining ecologically meaningful assemblage data across large spatial extents. Here, we used thousands of spatio-phenologically high-resolution assemblages across three distinct European regions together with a functional diversity approach to understand community assembly of dragonflies and damselflies (Odonata), an insect group characterized by a pronounced competitive reproductive biology. We found that adult dragonfly, but not damselfly, assemblages were consistently composed of species morphologically more different than expected by chance based on the traits that enhance their inter-specific reproductive encounters. These results provide consistent evidence for the role of competition in the assembly of animal communities, which we interpret is most likely caused by the territorial reproductive biology of dragonflies. Support for competition varied both spatially and seasonally following theoretical expectations, as it was strongest in locations and seasonal moments with low thermal stress (i.e. warm conditions) and high niche packing. Our study illustrates how spatio-temporal diversity patterns arise from variation in assembly processes.</p>
Risks for overwintering eggs of the dragonfly Sympetrum vicinum in aquatic and terrestrial environments
<p>Risk-spreading behaviour is often exhibited by animals as a response to unpredictably variable environments. Using field and laboratory studies, we tested the hypothesis that Sympetrum vicinum dragonflies spread the risks of winter environments by laying eggs across a terrestrial–aquatic gradient. Sympetrum vicinum eggs that overwintered in terrestrial and benthic-limnetic habitats had significantly higher hatching success compared with eggs that overwintered in littoral sites. Low success may have been caused by hypoxia due to excess sediment in the littoral samples in the lab. While hypoxia experienced under winter conditions (4°C) had no negative effect on hatching success, hatching in hypoxic and anoxic water significantly decreased hatching success. Opportunistic egg predation by a winter-active caddisfly significantly decreased egg hatching success. Because S. vicinum eggs have a relatively low supercooling point (− 26.25°C), freezing may not be a significant source of mortality in terrestrial or aquatic sites. By ovipositing in both terrestrial and aquatic environments, female dragonflies may be balancing the unpredictable risks of both the failure to inundate the eggs and egg predation. Our research highlights the potential for biotic interactions during winter to shape the behaviour and life-history of aquatic invertebrates.</p>
FIGURE 7. Probably a in New dragonflies and damselflies (Odonata) from the late Oligocene of Enspel (Rhineland-Palatinate, SW Germany)
FIGURE 7. Probably a stem-Libellulidae, PE 2001/5195-LS, hind wing. Scale bar is 10 mm.
Рис. 2. Вторичный копуΛятивный аппарат самца Fig. 2. Secondary male genitalia in First record of the dragonfly Leucorrhinia albifrons (Burmeister, 1839) (Odonata: Libellulidae) in Yakutia
Рис. 2. Вторичный копуΛятивный аппарат самца Fig. 2. Secondary male genitalia
Fig. 1 in A Synopsis of the Odonata (Dragonflies) of Sumatra
Fig. 1. - Drepanosticta tenella sp. n. ♂ Lampoeng, Anal apps., dorsal view and right side
Figure 2 in Successful reproduction of dragonflies in an artistic water fountain in Versailles, France
Figure 2. Sympetrum striolatum (exuvia) in dorsal wiew.
Figure 3 in Successful reproduction of dragonflies in an artistic water fountain in Versailles, France
Figure 3. Aeshna cyanea in ventral view showing ovipositor.
TaiEOL: Dragonflies of Taiwan - XML
本網站收錄台灣、澎湖、綠島、蘭嶼之蜻蜓種類,不包括少數僅出現於金門或馬祖之類群。疑問種或偶產種之照片並不齊全,少數是在台灣以外之地區所拍攝(如香港)。多數照片為野外之生態照,少部份為室內所拍攝。資料的確認感謝葉文琪先生與陳賜隆先生協助。 The dragonfly species in this collection includes those occur in Taiwan main island, Peng-hu islands, Green Island and Orchid Island (Lanyu), excluding few occur only in Quemoy islands (Kinmen) and Matsu Islands off the Fujian coast. Questionable and some of the very occasional species may have no photos. A few photos were taken in areas outside Taiwan such as Hong Kong. Most of the photos were taken in the wild while a few were taken at indoor settings. I would like to thank Mr. Wen-Chi Yeh and Mr. Szu-Lung Chen. They have contributed a lot to make sure the contents of the web pages being timely and correct. <p></p>http://taiwandragonfly.blogspot.tw/
FIG. 10. — Aeshna shanwangensis n in New discoveries of Neogene hawker dragonflies (Insecta, Odonata, Aeshnidae) from Shandong province in China
FIG. 10. — Aeshna shanwangensis n. sp., photograph of specimen CNU-ODO-SS2011011. Scale bar: 10 mm.
FIG. 8 in A revision of the Upper Jurassic-Lower Cretaceous dragonfly family Tarsophlebiidae, with a discussion on the phylogenetic positions of the Tarsophlebiidae and Sieblosiidae (Insecta, Odonatoptera, Panodonata)
FIG. 8. — Phylogeny of the major groups of Odonatoptera, hypothesis of Bechly (1996).
FIG. 4 in A revision of the Upper Jurassic-Lower Cretaceous dragonfly family Tarsophlebiidae, with a discussion on the phylogenetic positions of the Tarsophlebiidae and Sieblosiidae (Insecta, Odonatoptera, Panodonata)
FIG. 4. — Turanophlebia neckini (Martynov, 1927) n. comb., holotype (PIN 2452/3). Scale bar: 10 mm.
FIG. 3 in A revision of the Upper Jurassic-Lower Cretaceous dragonfly family Tarsophlebiidae, with a discussion on the phylogenetic positions of the Tarsophlebiidae and Sieblosiidae (Insecta, Odonatoptera, Panodonata)
FIG. 3. — Turanophlebia martynovi Pritykina, 1968, holotype (PIN 2554/21). Scale bar: 10 mm.
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Allen Brain Atlas
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Annotated Behaviour and Observability Dataset (ABODe)
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DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.