Temperature influences lipid content in the red harvester ant, Pogonomyrmex barbatus

Journal of Insect Science, Journal Year: 2023, Volume and Issue: 23(3)

Published: May 1, 2023

Temperature is one of the most important environmental conditions affecting physiological processes in ectothermic organisms like ants. Yet, we often lack information on how certain traits covary with temperature across time. Here, test predictions trait-lipid content-covaries using a conspicuous, ground-dwelling harvester ant. We focus lipid content as fat bodies are metabolically active tissues that for storing and releasing energy response to demand, which could be vital survival under variable temperatures. From March November, extracted lipids from surface workers 14 colonies while simultaneously recording ground temperature. first assessed if was highest during cooler temperatures when ants were less stressed. In doing so, found declined almost 70% cool months (November = 14.6%) hot (August 4.6%). next levels group collected at single time point change by placing individuals into chambers set 10, 20, 30°C (i.e., approximate span average November). again had significant impact such after 10 days, hottest chamber (30°C) decreased more than 75%. While intraspecific variation follows seasonal patterns, our results suggest fluctuations may account portion variance observed content.

Language: Английский

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Cold Comfort: metabolic rate and tolerance to low temperatures predict latitudinal distribution in ants

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2023, Volume and Issue: unknown

Published: Feb. 13, 2023

Abstract Metabolic compensation has been proposed as a mean for ectotherms to cope with colder climates. For example, under the metabolic cold adaptation/metabolic homeostasis hypotheses (MCA/MHH), it formulated that cold-adapted should display higher/more thermally sensitive rates (MRs) at lower temperatures. However, whether such can truly be associated distribution, and interplays cold-tolerance support species’ climatic niches, remains largely unclear despite broad ecological implications thereof. Here, we teased apart relationship between MRs, cold-tolerance, confront MCA/MHH among 13 ant species. We report clear effects, consistent MCA MHH, where MR parameters strongly correlated latitude factors across distributions. The combination of both further upheld best predictions niches. To our knowledge, this is first study showing association data supports increased predictive value biogeographical models in social insects. These results also highlight adaptation higher latitudes ants involved adjustments potentially expense performance warmer temperatures, allow extremely successful group insects thrive

Language: Английский

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Seasonal effects of granivory on broadcast seeding restoration in a degraded semiarid grassland

Restoration Ecology, Journal Year: 2023, Volume and Issue: 32(2)

Published: Sept. 14, 2023

Granivores, such as rodents and harvester ants, are common in dryland ecosystems. In intact ecosystems, the effects of granivores on soil seed banks, plant community structure, ecosystem functioning well established. However, restoration have received much less attention. this study, we evaluated seasonality removal by preference granivore exclosure bank at four sites southeastern Utah. We studied two species Pogonomyrmex rugosus P. occidentalis . The foraging behavior spp. was temperature‐dependent; they removed no seeds during winter months, up to 80% high activity summer. Despite seasonal differences removal, did not show significant preferences for species. their translated into measurable an experimental bank. Over summer ants reduced number approximately 20%, but when were excluded winter, remained same. This finding supports timing business‐as‐usual seeding practices applying late fall. If germinate first season after application, ant granivory is unlikely pose a large barrier establishment. if remain dormant year, many species, vulnerable granivory.

Language: Английский

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Thermal physiology, foraging pattern, and worker body size interact to influence coexistence in sympatric polymorphic harvester ants (Messor spp.)

Behavioral Ecology and Sociobiology, Journal Year: 2022, Volume and Issue: 76(6)

Published: June 1, 2022

Language: Английский

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Thermal tolerance of western corn rootworm: Critical thermal limits, knock-down resistance, and chill coma recovery

Journal of Thermal Biology, Journal Year: 2022, Volume and Issue: 109, P. 103338 - 103338

Published: Sept. 17, 2022

Language: Английский

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Diel Patterns Hold Promise as an Ecological Trait for Ants

Sociobiology, Journal Year: 2024, Volume and Issue: 71(1), P. e10081 - e10081

Published: Feb. 23, 2024

Ecological traits have flourished in insect-based studies, resulting a substantial and growing list of measurable traits. One trait that will likely become more attractive as data quality curation improve is the diel patterns insect activities. Diel ants can help better understand vital ecological processes such competition invasion biology. Because activity has potential to be an informative ants, we assessed designations foraging across literature quantify assess variation sampling extent this particular trait. We collected from 104 peer-reviewed scientific articles quantified these important documented found disproportionate amount solitary were primarily diurnal foragers relative cooperatively forage. Our show vary widely within ant genera. Importantly, highlight undersampling crucial trait, which currently limits its utility. efforts importance assessing ecologically trait’s landscape reported data.

Language: Английский

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Seasonal Diet Change of the Florida Harvester Ant (Pogonomyrmex badius) and Competition with the Red Imported Fire Ant (Solenopsis invicta)

Southeastern Naturalist, Journal Year: 2024, Volume and Issue: 23(3)

Published: Aug. 9, 2024

Pogonomyrmex badius (Florida Harvester Ant) is an ecosystem engineer that feeds on both seeds and insects. Currently, we know little about this species' collection of versus insects or how consumption these diets might change seasonally. We also competition with Solenopsis invicta (Red Imported Fire influences diet choice Florida Ants it may have contributed towards the observed range decline native species. To investigate food items by effects Red Ant foraging, conducted 2-choice trials seed insect baits at 9 different nests, 5 which had been treated to eliminate Ants. Collections were assessed 7 separate occasions from July 2020 April 2021. The was largely similar varied seasons. highest rates occurred in summer continued into autumn. There a noticeable starting late November, though seasonal trend significant for but not seeds. presence decreased Ants, types items, difference only distances closer their nests.

Language: Английский

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Under the sun or stars: how a dune ant (Hymenoptera: Formicidae) community is shaped along the day and night

Austral Entomology, Journal Year: 2023, Volume and Issue: 62(2), P. 191 - 199

Published: March 14, 2023

Abstract Atlantic Forest (AF) is a threatened megadiverse biome distributed from north to south along the ocean of South America and considered hotspot biodiversity. Currently, over 3000 ant taxa are known occur in AF ecosystems, many more expected but may never be acknowledged. The patterns processes structuring communities not well known, urging such studies. Temperature fundamental environmental condition that modulates species occurrences at different local regional scales. Global warming deeply impact occurrence, dynamics interactions, efforts amplify our understanding biodiversity urgent. Ants widely dunes, sensitive changes temperature as some thermophilic. In open areas varies considerably 24 h, with great mainly between day night. this study, we sought answer whether foredune community Restinga, one habitats AF, structured by For this, tested following hypotheses: (i) influences diversity; (ii) warmer periods, there decrease richness, an increase abundance; (iii) composition throughout and, consequently, temperatures. We arbitrarily drew parallel transect composed 15 pitfall trap units spaced every 30 m. Traps were changed five sampling periods: T1 (9:10–13:10 h), T2 (13:40–18:40 T3 (19:00–23:00 T4 (23:00–03:00 h) T5 (03:00–07:00 h). each period, recorded ambient relative humidity. recovered 11 on foredunes. Our results showed richness abundance ants daytime period was higher than night‐time suggesting positively affected these two parameters studied community. also periods. Considering aim describe diversity across h sampling, ‘quick‐shot’ allowed us determine humidity shape their occurrence activity. These indicate interplay factors correlated play important role Restinga

Language: Английский

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Diversity and composition of ant species in different urban areas in Bogor, West Java, Indonesia

Biodiversitas Journal of Biological Diversity, Journal Year: 2022, Volume and Issue: 23(8)

Published: Aug. 12, 2022

Abstract. Harahap IS, Asnan TAW, Widayanti S, Widhiastuti H. 2022. Diversity and composition of ant species in different urban areas Bogor, West Java, Indonesia. Biodiversitas 23: 4090-4096. Land use change, from natural to areas, is a threat biodiversity because the disturbance created by human can destroy habitat decrease richness. Ant one most abundant animals tropical habitats intrusive an area. This research aims determine types ants commonly found various ecosystems observation sampling were carried out Bogor City Areas at four ecosystems, i.e., office area, shopping mall, housing bus station. At each location, ten plots taken under environmental conditions. Sampling was for 6 months, April October 2021 with direct collection trapping method. The sample then laboratory identification data analysis process. results inventory obtained 7532 individuals 28 4 subfamilies, namely Dolichoderinae, Formicinae, Myrmicinae, Ponerinae. diversity location showed that station not significantly mall However, three locations, stations, malls, estates, significant differences habitats. Anoplolepis gracilipes which invasive tramp species, type all locations relatively high abundance.

Language: Английский

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