Liquid Assets for Fat Bankers: Summer Nectarivory by Migratory Moths in the Rocky Mountains, Colorado, U.S.A.

Kevan, Peter G.; Kendall, D.M.

doi:10.2307/1551995

Cited by 13 publications

(17 citation statements)

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“…In contrast, the army cutworm moth, which has similar seasonal migratory patterns to the bogong moth, forms dense aggregations during summer and is a major food for some populations of grizzly bears in the Rocky Mountains (Chapman et al 1955;Robison et al 2006). Unlike bogong moths that do not feed once in the aestivation sites (Common 1954), army cutworm moths continue to feed and in fact accumulate fat while present in alpine areas (Kevan & Kendall 1997). Army cutworm moths spend about 2 months aggregating in alpine areas of Glacier National Park where they are preyed on by grizzly bears (White et al 1999).…”

Section: Discussionmentioning

confidence: 99%

“…With the Greater Yellowstone Ecosystem extending over 16 000 km 2 the number of red foxes preying on army cutworm moths would probably add substantially to the energy flow into the system harvested by grizzly bears. No energy budget has been calculated for army cutworm moths, but unlike bogong moths they leave the mountains with 50-60% more fat than when they arrived (Kevan & Kendall 1997;White et al 1998) and hence the direction of energy flow would be the difference between the loss of energy to grizzly bears (and other predators) and the amount of flux to the plains. A total take by predators and a calculated energy and nutrient flux for this system would be of interest.…”

Section: Discussionmentioning

confidence: 99%

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The transport of nutrients and energy into the Australian Snowy Mountains by migrating bogong mothsAgrotis infusa

Green

2011

Austral Ecology

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Although energy flows are fundamental to our understanding of the functioning of ecosystems, the extent of transport of energy and nutrients by biological agents into mountains is poorly understood. Bogong moths constitute a keystone species in the ecology of the alpine zone of mainland Australia. Although known to transport nutrients and energy essential to the functioning of the alpine ecosystem, this has never been quantified. By allocating mortality between predation, and non-predator-related causes, a model was constructed to calculate mortality of moths in the Snowy Mountains region of the Australian Alps. Density of predators, their food requirements and the proportion of predator diet that was moth were estimated, and energy and nutrient content of moths were measured. This allowed a first order estimate of the total mortality of moths above 1500 m in the Snowy Mountains annually (1015 million) and the annual contributions of energy (4929 GJ) and nutrients (7.2 t of nitrogen and 0.97 t of phosphorus) by these moths to the system. The deleterious effects of transportation of exogenous chemicals to the mountains have been explored elsewhere but the fertilizing effect of this transport of nutrients still requires attention.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

The transport of nutrients and energy into the Australian Snowy Mountains by migrating bogong mothsAgrotis infusa

Green

2011

Austral Ecology

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“…host plant quality/availability, population density) factors (Johnson, 1969;Kieckhefer et al, 1974;Kevan & Kendall, 1997;Capinera, 2001). temperature, photoperiod, rainfall) and biotic (e.g.…”

Section: Introductionmentioning

confidence: 99%

“…temperature, photoperiod, rainfall) and biotic (e.g. host plant quality/availability, population density) factors (Johnson, 1969;Kieckhefer et al, 1974;Kevan & Kendall, 1997;Capinera, 2001). However, very little is known about the origin of immigrants, which is of importance not only when developing pest management strategies but also for studying the potential impact of climate change on seasonal migratory patterns.…”

Section: Introductionmentioning

confidence: 99%

Inferring origins of migrating insects using isoscapes: a case study using the true armyworm, Mythimna unipuncta, in North America

Hobson

Doward

Kardynal

et al. 2018

Ecological Entomology

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1. Many important insect pests undertake seasonal migrations at continental scales in response to changes in resource quality and availability. The frequency and timing of these events could be influenced by the impact of climate change on the suitability of the different sites exploited throughout the year, yet, in many cases, little is known about the origin of seasonal populations, as tracking insect movements is extremely challenging due to their small body size.2. The use of stable isotope measurements in insect tissues combined with the development of tissue-specific 'isoscapes' of modelled geographic isotope patterns presents a potentially valuable but rarely used approach for obtaining such information on important pest species. In this paper it is illustrated how stable hydrogen isotope analyses ( 2 H) in wing chitin of the true armyworm (Mythimna (Psuedaletia) unipuncta Haworth), a seasonal migrant, clearly delineated between 2016 spring immigrants and later locally produced moths in southern Ontario, Canada.3. It is shown that adult moths captured in early fall in Texas were immigrants from farther north, the first direct confirmation of a southward return migration of this species. Stable carbon isotope ( 13 C) measurements indicated that spring immigrants in Ontario and autumn immigrants in Texas were from exclusively C3 biomes. Stable nitrogen isotope ( 15 N) measurements also provided information on the probability of individuals coming from agriculturally intensive (i.e. higher 15 N) sites. Finally, several recommendations are provided regarding future research that could improve the Bayesian assignment models and thus improve assignment accuracy.

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“…Its broad dispersal to temperate and high-elevation sites may reflect migratory flights to cooler environments, as is known for a number of other noctuoids (Kevan and Kendall 1997).…”

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confidence: 90%

The most northerly Black Witch (<em>Ascalapha odorata</em>): a tropical moth in the Canadian Arctic

et al. 2014

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A specimen of the Black Witch (Ascalapha odorata) was collected in August 2006 near Churchill, Manitoba, at 58.7652°N. This represents the most northerly record for this species. DNA barcode comparison of 93 specimens of A. odorata in the Barcode of Life Data Systems revealed low genetic divergence even though these specimens were collected from a large geographical area. The haplotype of the Churchill specimen was shared by only one other individual (collected in the Yucatán Peninsula of Mexico) in the Barcode of Life Data Systems. A definite assignment of the geographic origin of the Churchill specimen is not possible with current data, but more extensive analysis of Central American populations with additional genetic markers might resolve this uncertainty.

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Liquid Assets for Fat Bankers: Summer Nectarivory by Migratory Moths in the Rocky Mountains, Colorado, U.S.A.

Cited by 13 publications

References 0 publications

The transport of nutrients and energy into the Australian Snowy Mountains by migrating bogong mothsAgrotis infusa

The transport of nutrients and energy into the Australian Snowy Mountains by migrating bogong mothsAgrotis infusa

Inferring origins of migrating insects using isoscapes: a case study using the true armyworm, Mythimna unipuncta, in North America

The most northerly Black Witch (<em>Ascalapha odorata</em>): a tropical moth in the Canadian Arctic

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