Body size, temperature, and seasonal differences in size structure influence the occurrence of cannibalism in larvae of the migratory dragonfly, Anax junius

Crumrine, Patrick W.

doi:10.1007/s10452-010-9314-z

Cited by 34 publications

(31 citation statements)

References 56 publications

(81 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It seems, however, that long, directed flights are likely at the beginning of the northern season, given that the first mature spring migrants appear at times when emergence probably has barely begun even several hundred kilometers further south. This could, perhaps, give the resulting larvae a size advantage over the offspring of later arriving adults while avoiding high rates of cannibalism by large overwintering larvae owing to cool water temperature (Crumrine 2010). …”

Section: Spring Migrationsmentioning

confidence: 99%

“…Such catastrophic lateseason events probably favors reproduction in several different water bodies by late-emerging adults as a hedge against loss of all offspring and dispersal over relatively long distances in, e.g., cases of regional drought. This should also favor rapid development in larvae that that hatch in spring, in order to minimize the risk of late season mortality; Crumrine (2010) proposed that larvae that are about 3-5 instars short of emergence in late summer may take greater risks in attacking large prey in order to accelerate development. Smaller larvae that hatch in midsummer and could not leave the pond before the onset of winter should remain and diapause, based on reasonably favorable odds that the habitat would remain suitable.…”

Section: Global Patterns?mentioning

confidence: 99%

See 1 more Smart Citation

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

May

2012

J Insect Conserv

View full text Add to dashboard Cite

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.

show abstract

Section: Spring Migrationsmentioning

confidence: 99%

Section: Global Patterns?mentioning

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

View full text Add to dashboard Cite

show abstract

“…A second effect of warming may be the divergence of seasonal phenology, so that early larval instars of one species interact with later instars of another species, leading to severe mortality consequences for the smaller dragonfly larvae (Wissinger, 1989; Crumrine, 2010). Their phenology is driven partly by temperature‐dependent development rates but also by the type of seasonal regulation in operation, which may be triggered by photoperiod (see review of Corbet, 1999).…”

Section: Introductionmentioning

confidence: 99%

Thermal adaptation affects interactions between a range‐expanding and a native odonate species

Suhling

2013

Freshwater Biology

View full text Add to dashboard Cite

Summary 1. Increasing temperature and invading species may interact in their effects on communities. In this study, we investigated how rising temperatures alter larval interactions between a naturally range‐expanding dragonfly, Crocothemis erythraea, and a native northern European species, Leucorrhinia dubia. Initial studies revealed that C. erythraea grow up to 3.5 times faster than L. dubia at temperatures above 16 °C. As a result, we hypothesised that divergent temperature responses would lead to rapid size differences between coexisting larvae and, consequently, to asymmetric intraguild predation at higher ambient temperatures. 2. Mortality and growth rates were measured in interaction treatments (with both species present) and non‐interaction controls (one species present) at four different temperature regimes: at an ambient temperature representative of central Germany, where both species overlap in distribution, and at temperatures increased by 2, 4 and 6 °C. 3. The mortality of C. erythraea did not differ between treatment and control. In contrast, mortality of L. dubia remained similar over all temperatures in the controls, but increased with temperature in the presence of the other species and was significantly higher there than in the controls. We concluded that L. dubia suffered asymmetric intraguild predation, particularly at increased temperature. Reduced growth rate of L. dubia in the interaction treatment at higher temperatures also suggested asymmetric competition for prey in the first phase of the experiment. 4. The results imply that the range expansion of C. erythraea may cause reduction in population size of syntopic L. dubia when temperature rises by more than 2 °C. The consequences for future range patterns, as well as other factors that may influence the interaction in nature, are discussed.

show abstract

“…1980; Brodie & Formanowicz 1987; Skelly & Werner 1990; Petranka & Hayes 1998; Storfer & White 2004). Recent work (Crumrine 2010a,b) has described small, earlier‐instar A. junius as cannibalistic prey of larger, late‐instar nymphs. This age/size‐structured intraspecific and intraguild predation can influence ecosystem dynamics and allow large and small dragonfly nymphs to fill niches as both predators and prey (Crumrine 2010a,b), respectively.…”

Section: Introductionmentioning

confidence: 99%

Ontogenetic Shift in Efficacy of Antipredator Mechanisms in a Top Aquatic Predator, Anax junius (Odonata: Aeshnidae)

2011

View full text Add to dashboard Cite

The ability of prey to escape predation often lies in the occurrence and efficacy of their predator avoidance and antipredator behaviors, which are often coupled with specialized morphology. How the use and efficacy of these behaviors change throughout ontogeny may be indicative of the vulnerability and ecological roles these animals experience throughout their lives. We examined the antipredator behavior of a large dragonfly nymph, Anax junius, from a historically fishless pond where these animals have traditionally been classified as top predators. These dragonfly nymphs displayed a series of distinct aggressive antipredator behaviors when grasped that involved stabbing with lateral and posterior spines and seizing with labial hooks. Larger (older) nymphs displayed these aggressive behaviors significantly more than smaller (younger) animals in simulated predation trials. During encounters with live larval salamander predators (Ambystoma tigrinum), all large nymphs, but only 12.5% of small nymphs successfully escaped predation attempts by the amphibians through the use of antipredator behavior. Large nymphs were also significantly more active than smaller nymphs in the presence of salamander larvae. Despite often being considered top predators in fishless ponds, our study demonstrates that their true role is more complex, depending on ontogeny and body size, and that effective antipredator behavior is likely necessary for survival in these systems.

show abstract

Body size, temperature, and seasonal differences in size structure influence the occurrence of cannibalism in larvae of the migratory dragonfly, Anax junius

Cited by 34 publications

References 56 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

Thermal adaptation affects interactions between a range‐expanding and a native odonate species

Ontogenetic Shift in Efficacy of Antipredator Mechanisms in a Top Aquatic Predator, Anax junius (Odonata: Aeshnidae)

Contact Info

Product

Resources

About