A dragonfly (<i>δ</i><sup>2</sup>H) isoscape for North America: a new tool for determining natal origins of migratory aquatic emergent insects

Hobson, Keith A.; Soto, David X.; Paulson, Dennis R.; Wassenaar, Leonard I.; Matthews, John

doi:10.1111/j.2041-210x.2012.00202.x

Cited by 66 publications

(110 citation statements)

References 31 publications

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“…These difficulties were largely overcome by Matthews (2007c;May and Matthews 2008), who took advantage of a well-documented north to south gradient in the 2 H: 1 H isotope ratio in natural fresh waters. This ratio is reflected in hydrogen isotope ratios of resident aquatic animals, including odonate larvae (Hobson et al 2012), and is preserved in the relatively inert wing cuticle of adults. Carefully calibrated (Matthews 2004(Matthews , 2007a.…”

Section: Tracking Fall Migrationsmentioning

confidence: 99%

A critical overview of progress in studies of migration of dragonflies (Odonata: Anisoptera), with emphasis on North America

May

2012

J Insect Conserv

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Migration by Odonata has been recorded sporadically for several centuries, but only recently have new technologies and a new wave of interest in these ancient insects sparked a concerted effort to understand the extent, behavioral mechanisms, adaptive significance, and ecological consequences of this phenomenon. Here I review our current knowledge of these sometimes spectacular flights, focusing on the few species in North America that are known to migrate more or less annually. One of these, the Common Green Darner, Anax junius, has been shown to traverse hundreds to thousands of kilometers from north to south during fall migration. Pantala flavescens (Wandering Glider) is plausibly inferred to make an overseas flight from India to East Africa with the Northeast Monsoon, although its migrations in North America are less well understood. Large scale movements of these and other species raises questions about population connectivity, ecosystem impacts, the nature and evolution of cues that initiate migration, and effects of climate change on these phenomena.

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Section: Tracking Fall Migrationsmentioning

confidence: 99%

A critical overview of progress in studies of migration of dragonflies (Odonata: Anisoptera), with emphasis on North America

May

2012

J Insect Conserv

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“…Nor is it clear how isotopic profiles can differ among insects produced from terrestrial and aquatic sources at a landscape level. Recent investigations on hydrogen and oxygen isotope composition of aquatic emergent insects suggest that these two insect groups can be encouragingly similar at continental scales [41], but further assays for the isotopes of carbon and nitrogen are now needed. …”

Section: H Isoscape Of Bowen Et Al (2005) For Individuals Sampled Imentioning

confidence: 99%

A multi-isotope (δ¹³C, δ¹⁵N, δ²H) approach to connecting European breeding and African wintering populations of barn swallow (Hirundo rustica)

2012

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Establishing links between breeding and wintering populations of longdistance migratory birds and other animals is fundamental to several aspects of migration research. However, severe limitations in our ability to track small-bodied migratory species still limits this field despite several recent technological breakthroughs. The measurement of naturally occurring stable isotopes of several elements in the tissues of migrants that travel across isotopic gradients or isoscapes has the potential to identify large scale migratory connectivity without some of the biases associated with the use of extrinsic markers. We investigated migratory connectivity between European breeding and African wintering populations of barn swallow (Hirundo rustica) by comparing feather isotope (δ 13 C, δ 15 N, δ 2 H) values with those expected from previously established feather isotopic clusters for Africa. We used a likelihood approach to assigning individuals to molt origins that also made use of prior information provided by ring recoveries as part of the EURING and SAFRING ringing efforts. We found evidence for strong isotopic spatial structure in the dataset, supporting the notion of a migratory divide in Europe with birds breeding in the Netherlands, Denmark, Germany and Eastern Europe wintering in southern Africa and virtually all samples from Switzerland westward being assigned to clusters in the northern portion of the species' winter range. Individuals from the United Kingdom were assigned to areas including Namibia, Botswana, northern South Africa, and along the coast of Mozambique and Tanzania. Birds wintering in the northernmost region of the wintering grounds tended to breed in the southernmost region of the breeding grounds, providing some evidence of leap-frog migration. We detected a strong latitudinal threshold in feather δ 13 C in Europe for African-grown feathers, suggesting that birds breeding in southern Europe (< 50° Latitude) primarily used C3-dominated habitats in Africa, whereas birds in northern Europe (> 53° Latitude) primarily used C4-dominated habitats. Our results emphasize the power in using a multi-isotope approach to assign individuals and populations to known continental-scale isoscapes and the advantages of combining isotopic and conventional (ring recovery) information within a Bayesian assignment framework. breeding grounds where they subsequently raise more offspring [8]. Other factors influencing overwinter survival and arrival phenology of birds on the breeding grounds involve large-scale climatic events or trends experienced on the wintering grounds, or en route, and there is considerable evidence for differential vulnerability to such factors among species and subpopulations within species depending on degree of migratory connectivity [9,10].Establishing migratory connectivity has benefited from several recent technological advances involving both extrinsic and intrinsic markers that can augment the more conventional but valuable long-term ring recovery programs [11]. Notably, the 3 U...

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“…δ 2 H, δ 15 N and δ 13 C) are translated up the food chain [15, 17] and, if they vary in a spatially predicable manner (termed isoscapes ; [18]), reflect the geographic origin of where tissues are grown in herbivores and higher order consumers [15]. Since stable isotopes in the chitin of wing tissue of adult flying insects is metabolically inert after formation [15, 19, 20], stable isotope measurements can be used to identify the geographic natal origin of adults regardless of how far they have flown from the natal site [21]. Stable isotope measurements have been used successfully to determine natal origin of migratory insects such as butterflies [22–24] and dragonflies [21].…”

Section: Introductionmentioning

confidence: 99%

Migration distance as a selective episode for wing morphology in a migratory insect

et al. 2017

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BackgroundSelective pressures that occur during long-distance migration can influence morphological traits across a range of taxa. In flying insects, selection should favour individuals that have wing morphologies that increase energy efficiency and survival. In monarch butterflies, differences in wing morphology between migratory and resident populations suggest that migratory populations have undergone selection for larger (as measured by length and area) and more elongated (as measured by roundness and aspect ratio) forewings. However, selection on wing morphology may also occur within migratory populations, particularly if individuals or populations consistently migrate different distances.ResultsUsing 613 monarch butterflies that were collected on the Mexican wintering grounds between 1976 – 2014, we tested whether monarch wing traits were associated with migratory distance from their natal areas in eastern North America (migration range: 774–4430 km), as inferred by stable-hydrogen (δ 2H) and -carbon (δ 13C) isotopic measurements. Monarchs that migrated farther distances to reach their overwintering sites tended to have longer and larger wings, suggesting positive selective pressure during migration on wing length and area. There was no relationship between migration distances and either roundness or aspect ratio.ConclusionsOur results provide correlative evidence that the migratory period may act as a selective episode on monarch butterfly wing morphology, although selection during other portions of the annual cycle, as well as extensive mixing of individuals from various natal locations on the breeding grounds, likely counteracts directional selection of migration on morphology.Electronic supplementary materialThe online version of this article (doi:10.1186/s40462-017-0098-9) contains supplementary material, which is available to authorized users.

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A dragonfly (δ²H) isoscape for North America: a new tool for determining natal origins of migratory aquatic emergent insects

Cited by 66 publications

References 31 publications

A critical overview of progress in studies of migration of dragonflies (Odonata: Anisoptera), with emphasis on North America

A critical overview of progress in studies of migration of dragonflies (Odonata: Anisoptera), with emphasis on North America

A multi-isotope (δ¹³C, δ¹⁵N, δ²H) approach to connecting European breeding and African wintering populations of barn swallow (Hirundo rustica)

Migration distance as a selective episode for wing morphology in a migratory insect

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A dragonfly (δ2H) isoscape for North America: a new tool for determining natal origins of migratory aquatic emergent insects

Cited by 66 publications

References 31 publications

A critical overview of progress in studies of migration of dragonflies (Odonata: Anisoptera), with emphasis on North America

A critical overview of progress in studies of migration of dragonflies (Odonata: Anisoptera), with emphasis on North America

A multi-isotope (δ13C, δ15N, δ2H) approach to connecting European breeding and African wintering populations of barn swallow (Hirundo rustica)

Migration distance as a selective episode for wing morphology in a migratory insect

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A dragonfly (δ²H) isoscape for North America: a new tool for determining natal origins of migratory aquatic emergent insects

A multi-isotope (δ¹³C, δ¹⁵N, δ²H) approach to connecting European breeding and African wintering populations of barn swallow (Hirundo rustica)