A circadian rhythm influencing foraging behaviour in the saw‐toothed grain beetle <i>Oryzaephilus surinamensis</i>

Bell, C. H.; Kerslake, P. R.

doi:10.1111/j.1365-3032.1986.tb00384.x

Cited by 11 publications

(2 citation statements)

References 5 publications

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“…Changing photoperiod has been shown previously to affect several aspects of animal food collection behavior. For example, increased experimental photoperiod prolonged the length of nocturnal foraging in the polychaete Nereis virens [37] , prolonged foraging bouts in Siberian hamsters [16] , and dampened nocturnal foraging intensity in a grain beetle [38] . Temperature is another environmental factor that might affect foraging behavior, and our summer and fall colonies did experience different natural temperature regimes, in terms of absolute temperatures.…”

Section: Discussionmentioning

confidence: 99%

Seasonality Directs Contrasting Food Collection Behavior and Nutrient Regulation Strategies in Ants

et al. 2011

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Long-lived animals, including social insects, often display seasonal shifts in foraging behavior. Foraging is ultimately a nutrient consumption exercise, but the effect of seasonality per se on changes in foraging behavior, particularly as it relates to nutrient regulation, is poorly understood. Here, we show that field-collected fire ant colonies, returned to the laboratory and maintained under identical photoperiod, temperature, and humidity regimes, and presented with experimental foods that had different protein (p) to carbohydrate (c) ratios, practice summer- and fall-specific foraging behaviors with respect to protein-carbohydrate regulation. Summer colonies increased the amount of food collected as the p:c ratio of their food became increasingly imbalanced, but fall colonies collected similar amounts of food regardless of the p:c ratio of their food. Choice experiments revealed that feeding was non-random, and that both fall and summer ants preferred carbohydrate-biased food. However, ants rarely ate all the food they collected, and their cached or discarded food always contained little carbohydrate relative to protein. From a nutrient regulation strategy, ants consumed most of the carbohydrate they collected, but regulated protein consumption to a similar level, regardless of season. We suggest that varied seasonal food collection behaviors and nutrient regulation strategies may be an adaptation that allows long-lived animals to meet current and future nutrient demands when nutrient-rich foods are abundant (e.g. spring and summer), and to conserve energy and be metabolically more efficient when nutritionally balanced foods are less abundant.

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Section: Discussionmentioning

confidence: 99%

Seasonality Directs Contrasting Food Collection Behavior and Nutrient Regulation Strategies in Ants

et al. 2011

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“…Circadian rhythm has been documented in the foraging activity in O. surinamensis (Bell and Kerslake 1986). For insects held in a photoperiod of 15:9 (L:D) h, peaks in feeding activity occurred 2Ð 6 h after the start of scotophase.…”

Section: Discussionmentioning

confidence: 99%

Arena Size, Hole Density, and Capture of <I>Oryzaephilus surinamensis</I> (Coleoptera: Silvanidae) in Grain Probe Traps

Epsky¹,

Shuman²

2004

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The relationship of size of test arena, number of holes in a grain probe trap body and capture of the sawtoothed grain beetle, Oryzaephilus surinamensis (L.), was determined in simulated field tests conducted in an outdoor screen enclosure exposed to natural temperature fluctuations. Polyvinylchloride (PVC) probe bodies were attached to electronic sensor heads, and insect captures were recorded electronically using an electronic grain probe insect counter (EGPIC) system. In comparisons among PVC probe trap bodies with 60, 132, 252, and 492 holes, tested at 18 insects per kilogram in 4.5, 17, and 40 kg of soft wheat in cylindrical arenas (10.2, 20.3, and 30.5 cm in diameter, respectively), number of holes in the probe trap body had no effect on insect capture, but percentage of insects recovered was indirectly related to size of the test arena. Periodicity of insect capture was determined using the time-stamp data that were recorded by the EGPIC system. Circadian rhythm was observed in the periodicity of the capture that corresponded to foraging activity peaks documented for sawtoothed grain beetles, with activity peaks occurring early in the scotophase. There were shifts in times of peak activity among the different test arena sizes that corresponded to differences in temperature in the grain mass. Increases in both temperature and contact between insects and grain probe in the smallest arenas resulted in higher capture of sawtoothed grain beetles. This research documents additional important factors when evaluating capture of sawtoothed grain beetles in grain probe traps.

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Microhabitat segregation and physiological differences in co-occurring tiger beetle species, Cicindela oregona and Cicindela tranquebarica

Schultz

Hadley

1987

Oecologia

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The daily movements of two co-occurring tiger beetle species were monitored in conjunction with changes in microclimate along streams in Northeast Arizona. Cicindela oregona and C. tranquebarica temporarily segregated across areas of beach exhibiting different microclimates. C. oregona progressively moved from the dry upper beach to the wet stream edge as beach temperatures increased and humidity decreased. The actively foraged throughout the day in this moist habitat at air temperatures between 25 and 38°C. C. tranquebarica remained on the dry, upper portions of the beach and shuttled between sun and shade at air temperatures above 35°C. Only when stream edge temperatures exceeded 30°C was tranquebarica found in this subhabitat. Both species exhibited physiological tolerances in the laboratory that were consistent with their microhabitat preferences in the field. Although both species had similar high lethal temperatures (47-48°C) in saturated air, oregona died at lower temperatures (39-43°C) than tranquebarica (46-47°C) under dry (0% RH) conditions. C. oregona was considerably more active than tranquebarica at body temperatures below 30°C and exhibited higher levels of active metabolism between 25 and 40°C. In addition, C. tranquebarica exhibited significantly lower water loss rates than oregona at 30, 35 and 40°C.

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A circadian rhythm influencing foraging behaviour in the saw‐toothed grain beetle Oryzaephilus surinamensis

Cited by 11 publications

References 5 publications

Seasonality Directs Contrasting Food Collection Behavior and Nutrient Regulation Strategies in Ants

Seasonality Directs Contrasting Food Collection Behavior and Nutrient Regulation Strategies in Ants

Arena Size, Hole Density, and Capture of <I>Oryzaephilus surinamensis</I> (Coleoptera: Silvanidae) in Grain Probe Traps

Microhabitat segregation and physiological differences in co-occurring tiger beetle species, Cicindela oregona and Cicindela tranquebarica

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