Dispersal by Aquatic Insects

May, Michael L.

doi:10.1007/978-3-030-16327-3_3

Cited by 14 publications

(11 citation statements)

References 199 publications

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“…These movements also depend on extrinsic factors such as land use, connectivity in the surrounding matrix (Maynou et al, 2017) and meteorological factors (e.g. temperature; May, 2019). Overall, understanding processes that shape movements and distribution at individual scale provides insights into population dynamics (Lowe & McPeek, 2014).…”

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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“…Therefore, we could assume that the presence of families with broader thermal tolerance could survive and increase their distribution range in the new climatic scenarios, while families with narrower thermal tolerance and limited ecological plasticity could reduce their distribution range. In order to resist the new habitat conditions, benthic macroinvertebrates could use some survival strategies which includes egg diapause (Vinogradova, 2007), drift movement (Merritt and Cummins, 1996) or flight behavior in adult stages (May, 2019). However, it is difficult to know if the change in the distribution range will be linear or the species could gradually adapt to global warming (Isaak et al, 2016), since the speed of warming in a community's habitat and the speed with which aquatic communities could change their ranges is largely unknown to the study area.…”

Section: Discussionmentioning

confidence: 99%

Response of macroinvertebrate communities to thermal regime in small Mediterranean streams (southern South America): Implications of global warming

et al. 2020

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“…The preferences of migratory dragonflies in the choice of ephemeral ponds for oviposition should be highlighted. Such a strategy undoubtedly has an adaptive significance [May, 2019]. In habitats, where hydrobiocenoses has not yet been established or is in the early stages of formation, the resistance of native biota is minimal and, as a rule, there are no aquatic predators.…”

Section: The List Of Migrant Speciesmentioning

confidence: 99%

“…Obligatory autumn flights of these dragonflies to the south and, at the same time, winter development of larvae on the whole territory of Central Asia (and even further north) suggest that migration strategy of A. parthenope is similar to that of A. junius in North America. There are cohorts with different annual cycles in populations of this species, one of which migrates and the other one remains residential [May, Mattews, 2008;May, 2013May, , 2019. In this case, it is especially difficult to determine the spring immigration of dragonflies, because both aboriginal individuals and immigrants from the south can exist simultaneously in the same locality [Borisov, 2012a[Borisov, , 2015.…”

Section: Introductionmentioning

confidence: 99%

Spring immigration of dragonflies (Odonata) in Tajikistan

Borisov

2019

EEJ

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и экологии животных СО РАН, ул. Фрунзе 11, Новосибирск 630091 Россия.Abstract. Four migratory dragonfly species, Anax ephippiger, A. parthenope, Pantala flavescens and Sympetrum fonscolombii, arriving in Tajikistan for reproduction in spring 2019 from southernmost parts of the areal, were studied. In spring, populations of the most abundant and widespread immigrant species, Anax parthenope, presumably include immigrants from both southern and local residents. Ephemeral water ponds, mainly rice fields, are more preferable for oviposition of Pantala flavescens and Sympetrum fonscolombii, and probably typical of Anax ephippiger, but a different type water reservoir is necessary for A. parthenope and for a number of local eurytopic non-migrating dragonflies.Резюме. Весной 2019 г. в Таджикистане проведено исследование стрекоз-иммигрантов, которые прилетают сюда для репродукции из расположенных южнее участков ареала. Отмечено 4 таких вида: Anax ephippiger, A. parthenope, Pantala flavescens and Sympetrum fonscolombii. Наиболее широко распространённым и массовым из иммигрантов был A. parthenope. Предполагается, что весной в популяциях этого вида одновременно присутствуют и иммигранты, прилетевшие с юга, и резидентные местные особи. Преференции в выборе для яйцекладки эфемерных водоёмов (в первую очередь рисовых полей) наиболее выражены у P. flavescens и S. fonscolombii и предполагаются у A. ephippiger. A. parthenope, напротив, населяет водоёмы самого разного типа, не отличаясь в этом от эвритопных аборигенных не мигрирующих видов стрекоз.Поступила в редакцию 25.7.2019

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Dispersal by Aquatic Insects

Cited by 14 publications

References 199 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

Response of macroinvertebrate communities to thermal regime in small Mediterranean streams (southern South America): Implications of global warming

Spring immigration of dragonflies (Odonata) in Tajikistan

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