Diel changes in habitat use by dragonflies: Nocturnal roosting site selection by the threatened dragonfly <i>Sympetrum depressiusculum</i> (Odonata: Libellulidae)

Hykel, Michal; Harabiš, Filip; Dolný, Aleš

doi:10.1111/ens.12292

Cited by 7 publications

(2 citation statements)

References 30 publications

(44 reference statements)

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“…However, most studies have focused on activities of males near the ponds. Little is known about the requirements of both sexes in surrounding terrestrial habitats (Dolnỳ et al., 2014; Hykel et al., 2016; Le Naour et al., 2019) and their activity patterns in the landscape (Hykel et al., 2018). Indeed, this information is difficult to obtain for most species because of their elusive behaviour when they are away from ponds (Hykel et al., 2018; Moskowitz & May, 2017).…”

Section: Introductionmentioning

confidence: 99%

Habitat use and movements of a large dragonfly (Odonata: Anax imperator) in a pond network

2020

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Local movements of aquatic insects within the surroundings of waterbodies aim essentially to find food, mates, resting sites, or avoid predation. Distances moved are very variable among species and may also differ depending on sex or age at the intraspecific scale. Despite a large panel of studies on odonate activities near waterbodies, little is known about their movements and behaviour in the surrounding landscape matrix. This knowledge is, however, crucial to support management schemes of pond networks and allow improvement of connectivity between them. In this study, 87 individuals of the large dragonfly Anax imperator were identified with a unique code on the wings and monitored visually on five ponds during summers 2017 and 2018. Simultaneously, 54 individuals were equipped with radio transmitters and tracked for up to 15 days. We built Cormack Jolly Seber models to test which factors are important for movement and survival of individuals, and calculated home ranges. Additionally, we performed a step selection analysis on the telemetry data to identify the terrestrial habitats selected by A. imperator at the interface between a rural area and a suburban area in north‐western France. A reduction of the survival rate was observed on the day immediately following capture regardless of the marking method. Individuals equipped with radio transmitters had a lower estimated daily survival (0.78; 95% confidence interval = 0.70–0.85) compared to wing‐marked individuals (0.89; 95% confidence interval = 0.85–0.92). Wing loading and age were the main variables influencing dragonfly survival for both methods. The probability of movement between ponds was similar for both sexes, but radio‐tracking data showed that females moved significantly further away in the landscape matrix than males, with one female detected up to 1,902 m away from the release pond. Females also had a larger home range (mean 95% kernel: 50 ha) than males (mean 95% kernel: 5 ha). Reproductive behaviour of males and flying behaviour of females were positively related to air temperature. Individuals of both sexes were present on ponds more often than in all other habitats whatever their activity. High trees were the preferred place to rest when air temperatures were low, especially for females. Overall, this study highlights the importance of integrating neighbouring trees in management schemes of ponds. It also confirms that preservation of pond networks must include on several hectares of land around ponds to meet the aquatic and terrestrial needs of amphibious organisms such as odonates. Our radio‐tracking data provide a basis for further studies on the persistence of odonate meta‐populations in fragmented landscapes.

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Section: Introductionmentioning

confidence: 99%

Habitat use and movements of a large dragonfly (Odonata: Anax imperator) in a pond network

2020

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“…searching for phacelia flowers in the morning to aphid colony in the afternoon. In the foraging damselflies, the diurnal shift in the habitat utilization from searching for prey to reproduction has been reported by Hykel et al (2017).…”

Section: Abdomen Status Of E Balteatus Foraging In the Phacelia Patchesmentioning

confidence: 99%

Diurnal Foraging Behavior of an Aphidophagous Hoverfly in an Insectary Plant Patch

Emtia¹,

Ohno²

2017

JBiopest

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A series of foraging bouts of Episyrphus balteatus (DeGeer) females were observed and recorded throughout the day in phacelia (Phacelia tanacetifolia Bentham) patches. The dominant transitions of interplant movement, approaching and probing bouts were statistically more frequent in the morning than in the afternoon. In the morning, interplant movement of foragers was significantly longer and they were moving at higher places of phacelia patches. They approached and probed flowers considerably longer in morning compared to afternoon. A significant positive relationship between the number of open flowers in a patch and the patch residence time was observed in the morning. The proportion of females having swollen abdomen filled with phacelia pollen (68.2%) in the afternoon was significantly higher than that (31.82%)in the morning. In our study, E. balteatus females spent more time foraging in phacelia patches in morning compared to afternoon. Based on the results and by considering the dual resources requirements of a female hoverfly (flower foraging and searching for aphids to lay eggs), we will discuss the effective diurnal foraging of E. balteatus females in phacelia patches.

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Pond creation and restoration: patterns of odonate colonization and community dynamics

2021

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Diel changes in habitat use by dragonflies: Nocturnal roosting site selection by the threatened dragonfly Sympetrum depressiusculum (Odonata: Libellulidae)

Cited by 7 publications

References 30 publications

Habitat use and movements of a large dragonfly (Odonata: Anax imperator) in a pond network

Habitat use and movements of a large dragonfly (Odonata: Anax imperator) in a pond network

Diurnal Foraging Behavior of an Aphidophagous Hoverfly in an Insectary Plant Patch

Pond creation and restoration: patterns of odonate colonization and community dynamics

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