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Статті в журналах з теми "Ant nest density"

Автор: Grafiati

Опубліковано: 7 червня 2025

Оновлено: 2 серпня 2025

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1

Lu, Yongyue, Lei Wang, Yijuan Xu, Ling Zeng, and Ningdong Li. "Correlation of the Nest Density and the Number of Workers in Bait Traps for Fire Ants (Solenopsis invicta) in Southern China." Sociobiology 59, no. 4 (2014): 1197–204. http://dx.doi.org/10.13102/sociobiology.v59i4.499.

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The relationship between Solenopsis invicta nest density and the number of fire ant workers in bait traps and percentages of traps capturing ants were investigated in the waste land of Wuchuan, Guangdong, South China. The results showed that fire ant nest density is positively correlated with the number of workers captured in traps, and could be described by N=60.53LnD +348.0D+421.1. The workers exceeded 200 and 300 in bait traps while the density of fire ant nests was over 0.023 and 0.084 ind./m2, respectively. The percentages of traps capturing ants were also positively correlated with fire

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2

Dias, Ratnayake K. S., and Warnakulasuriyage S. Udayakantha. "Nest density and other observations on a population of Aneuretus simoni Emery, 1893 (Formicidae, Aneuretinae) and other ants in Indikada Mukalana Forest Reserve in Sri Lanka." Journal of Insect Biodiversity 4, no. 12 (2016): 1. http://dx.doi.org/10.12976/jib/2016.4.12.

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The Sri Lankan Relict Ant, Aneuretus simoni Emery, survives in several wet zone and intermediate zone forests in Sri Lanka. Nests of this species and other ants were surveyed at 159 m and 291 m elevations in Indikada Mukalana Forest Reserve by laying 20 quadrats of 1 m × 1 m at two plots of each locality in December, 2015. The number of ant nests within each quadrat was recorded; then the frequency of nest occurrence out of 40 quadrats, percentage nest abundance and mean nest density of A. simoni, as well as associated ant fauna were calculated. Percentage frequency of worker ant occurrence wa

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3

Ouagoussounon, Issa, Rosalia Gration Rwegasira, Appolinaire Adandonon, Maulid Mwatawala, Joachim Offenberg, and Dansou Kossou. "Temporal Variability in Weaver Ant Oecophylla longinoda Latreille (Hymenoptera: Formicidae) Nest Characteristics in Selected Host Plants." Sociobiology 71, no. 1 (2024): e10280. http://dx.doi.org/10.13102/sociobiology.v71i1.10280.

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Weaver ants (Oecophylla smaragdina and O. longinoda) are famous for their impressive nest constructions where they weave together living leaves on their host plants. Also, they are known to protect tropical tree crops against insect pests and are thus being utilized for biological control. To optimize their use, nest numbers have been used to track weaver ant abundances in plantation, assuming the number of nests reflects ant numbers. In this study we compared nest size, the density of ants and the proportion of workers in nests between three host plants (cashew, citrus and mango) and between

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4

Baer, Julia. "Native ant species Myrmica rubra affects Herring Gull Larus argentatus and Lesser Black-backed Gull L. fuscus chick survival at a North Sea island." Seabird Journal, no. 27 (2014): 87–98. http://dx.doi.org/10.61350/sbj.27.87.

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Trischen island is located in the core area of the Schleswig Holstein Wadden Sea National Park, north of the Elbe estuary, and holds one of the largest colonies of Herring Gull Larus argentatus (1,781 pairs in 2013) and Lesser Black-backed Gull L. fuscus (1,838 pairs in 2013) on the German west coast. Productivity has been monitored for both species since 2010, and was low throughout 2010-13, averaging 0.26 ± 0.12 SD fledged/nest for Herring Gull and 0.32 ± 0.14 SD fledged/nest for Lesser Black-backed Gull. Since 2011 excessive ant activity has been noted at some nest sites, causing distress f

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5

Hidayat, Alfian, Ika Purnamasari, and Meiliyani Siringoringo. "Penentuan Jalur Terpendek dengan Metode Heuristik Menggunakan Algoritma Sarang Semut (Ant Colony)." EKSPONENSIAL 11, no. 1 (2021): 93. http://dx.doi.org/10.30872/eksponensial.v11i1.649.

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Ant Colony algorithm was adopted from the behavior of ant colonies, known as the system of ants, ant colonies are naturally able to find the shortest route on their way from nest to food source places. Colony of ants can find shortest route between the nest and food sources based on the trajectory of footprints that have been passed. The density of ant footprints on the path is always updating because of the evaporation of the footprints and the determination of ant pathways using probability calculations. This study aims to determine the results of determining the shortest path using the ant

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6

Debruyn, LAL, and AJ Conacher. "The bioturbation activity of ants in agricultural and naturally vegetated habitats in semiarid environments." Soil Research 32, no. 3 (1994): 555. http://dx.doi.org/10.1071/sr9940555.

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The effect of ant activity on bioturbation rates was assessed in the central wheatbelt of Western Australia in naturally vegetated and farmland sites, by bimonthly measurements of soil fauna activity and periodic measurements of ant nest dimensions. The percentage soil surface affected by soil fauna (%SSASF) was on average 0.5%, with the lowest activity in cropped areas and the highest %SSASF recorded in pasture sites (>2%). Overall %SSASF was greater on yellow sand in comparison with grey sandy loam. The estimated bioturbation rates of ant communities in naturally vegetated and farmland ha

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7

Li, Kevin, John H. Vandermeer, and Ivette Perfecto. "Disentangling endogenous versus exogenous pattern formation in spatial ecology: a case study of the ant Azteca sericeasur in southern Mexico." Royal Society Open Science 3, no. 5 (2016): 160073. http://dx.doi.org/10.1098/rsos.160073.

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Spatial patterns in ecology can be described as reflective of environmental heterogeneity (exogenous), or emergent from dynamic relationships between interacting species (endogenous), but few empirical studies focus on the combination. The spatial distribution of the nests of Azteca sericeasur , a keystone tropical arboreal ant, is thought to form endogenous spatial patterns among the shade trees of a coffee plantation through self-regulating interactions with controlling agents (i.e. natural enemies). Using inhomogeneous point process models, we found evidence for both types of processes in t

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8

Sondej, Izabela, and Timo Domisch. "Impact of Large-Scale Fire and Habitat Type on Ant Nest Density and Species Abundance in Biebrza National Park, Poland." Forests 15, no. 1 (2024): 123. http://dx.doi.org/10.3390/f15010123.

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Fire can have negative effects on the ant community by reducing species abundance through direct mortality, changes in resource availability, or foraging activity. Fire can also have positive effects, especially for opportunistic species preferring open or disturbed habitats. We assessed the direct effects of a large-scale fire on ant communities in open habitats (grassland and Carex) and moist forested peatland (birch and alder) sites in Biebrza National Park, testing three hypotheses: (i) the large-scale fire had more significant effects on ant nest density in forests than in open habitats,

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9

Sendoya, Sebastian F., Paulo S. D. Silva, and Alejandro G. Farji-Brener. "Does inundation risk affect leaf-cutting ant distribution? A study along a topographic gradient of a Costa Rican tropical wet forest." Journal of Tropical Ecology 30, no. 1 (2013): 89–92. http://dx.doi.org/10.1017/s026646741300076x.

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Abstract:Successional state of forest and availability of pioneer plants are recognized factors affecting densities of leaf-cutting ants. However little is known about how abiotic factors can shape nest distributions. We investigated the effect of topography, soil, forest successional state and inundation risk on nest density and size of Atta cephalotes colonies along streams in a tropical wet forest in Costa Rica. In each forest type, we surveyed 12 sites, each site comprising five transects (10 × 100 m) varying in topography and proximity to streambeds. We found no difference regarding nest

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10

Sondej, Izabela, and Timo Domisch. "Reaction of Wood Ants to a Large-Scale European Spruce Bark Beetle Outbreak in Temperate Forests." Insects 15, no. 11 (2024): 840. http://dx.doi.org/10.3390/insects15110840.

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In the Białowieża Forest, Norway spruce is the preferred host tree species for wood ants, both in coniferous and mixed stands; thus, spruce mortality as a consequence of a continuous spruce bark beetle outbreak in the Białowieża Forest since 2012 could have severe consequences for wood ant colonies, as well as their vitality and distribution. The main aim of this study was to assess whether the bark beetle outbreak had any effects on wood ant nest density and abundance and whether we could find any factors affecting the dead spruce distribution around ant nests. A re-inventory of active and ab

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11

Daulay, Milahayati, Muhammad Syahputra, Mutiara Sari, Tri Widyawati, and Dwi Anggraini. "The potential of Myrmecodia pendans in preventing complications of diabetes mellitus as an antidiabetic and antihyperlipidemic agent." Open Veterinary Journal 14, no. 7 (2024): 1607. http://dx.doi.org/10.5455/ovj.2024.v14.i7.10.

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Background: Hyperglycemia in diabetes mellitus (DM) can lead to dyslipidemia, which is a risk factor for macrovascular complications such as heart disease and stroke. Aside from administering antidiabetic medications, DM treatment can also be achieved through the use of natural components, such as Myrmecodia pendans, commonly known as the ant nest plant. Aim: This study aimed to investigate the impact of administering the ant nest plant on the lipid profile of Wistar rats. Methods: A group of 20 rats was divided into two categories: 6 rats served as healthy controls (H), while the remaining 14

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12

Lacau, Lucimeire S. Ramos, Paulo Sávio Damásio Silva, Jacques Hubert Charles Delabie, Sébastien Lacau, and Odair Correa Bueno. "Nest Biology and Demography of the Fungus-Growing Ant Cyphomyrmex lectus Forel (Myrmicinae; Attini) at a Disturbed Area Located in Rio Claro, SP, Brazil." Sociobiology 62, no. 3 (2015): 462. http://dx.doi.org/10.13102/sociobiology.v62i3.709.

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Cyphomyrmex ants are a basal group of small fungus-growers (Myrmicinae:Attini), which differ profoundly from their most studied relatives Atta and Acromyrmex. Our objective was to investigate the nest biology and demography of the fungus-growing ant Cyphomyrmex lectus in a transitional area (savanna-forest) disturbed by an annual fire regime, in Southeast Brazil. The colonies of C. lectus were located close to each other (mean distance between nests, 3.38 ± 2.75 m). Its external nest structure consisted of a single circular nest-entrance hole but without a conspicuous nest mound. Nests were re

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13

Razin, Nitzan, Jean-Pierre Eckmann, and Ofer Feinerman. "Desert ants achieve reliable recruitment across noisy interactions." Journal of The Royal Society Interface 10, no. 82 (2013): 20130079. http://dx.doi.org/10.1098/rsif.2013.0079.

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We study how desert ants, Cataglyphis niger , a species that lacks pheromone-based recruitment mechanisms, inform each other about the presence of food. Our results are based on automated tracking that allows us to collect a large database of ant trajectories and interactions. We find that interactions affect an ant's speed within the nest. Fast ants tend to slow down, whereas slow ones increase their speed when encountering a faster ant. Faster ants tend to exit the nest more frequently than slower ones. So, if an ant gains enough speed through encounters with others, then she tends to leave

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14

Kashiwa, Takumi, Hikari Watanabe, Isao Shitanda, Masayuki Itagaki, Shinichi Ito, and Tetsuro Hosogi. "Impedance Analysis on Ant-Nest Corrosion of Copper- Effect of Phosphorus Content in Copper on Corrosion Morphology-." ECS Meeting Abstracts MA2024-02, no. 67 (2024): 4569. https://doi.org/10.1149/ma2024-02674569mtgabs.

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In recent years, leakage of refrigerant due to ant-nest corrosion has become a problem in copper piping used in heat exchangers of air-conditioning equipment.1) In our laboratory, we have succeeded in electrochemically reproducing ant-nest corrosion by galvanostatic polarization of phosphorus-deoxidized copper immersed in 600 ppm, formic acid solution of pH 5.5 at a current density of 0.3 mA/cm2..2) The pits of ants-nest corrosion have a fractal structure with a repetitive branching shape. Our laboratory reported that the number of branching in ant-nest corrosion can be determined by using a t

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15

Sousa-Souto, Leandro, José H. Schoereder, Carlos Ernesto G. R. Schaefer, and Washington L. Silva. "Ant nests and soil nutrient availability: the negative impact of fire." Journal of Tropical Ecology 24, no. 6 (2008): 639–46. http://dx.doi.org/10.1017/s0266467408005464.

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Abstract:High-nutrient patches are important for regulating the structure and physiognomy of dystrophic habitats. Leaf-cutting ants create these rich patches in many neotropical habitats. Burning, however, could diminish or even annul the effects of ant nests on soil properties. To test this hypothesis, we compared the nutrient concentrations at various depths in soil samples near three nests of the leaf-cutting ant Atta laevigata and three non-nest soils, located in 10-ha plots subjected to burning or with fire-protection within a Brazilian cerrado. Root density in ant-nest soil was greater t

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16

Falahudin, Irham, and Thoriq Alfarabi. "Study of The Ecological Populations and Nesting Oecophylla smaragdina FABR. on Oil Palm Plantations as A Biological Control Indicator." Al-Kauniyah: Jurnal Biologi 18, no. 2 (2025): 318–29. https://doi.org/10.15408/kauniyah.v18i2.40544.

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Weaver ants (Oecophylla smaragdina Fabr.) are social insects that have an ecological role in ecosystems of oil palm plantations. Oecophylla is a predator that prevents ant prey and influences interspecies competition. The study of the ecological population of Oecophylla smaragdina Fabr. Has not been reported, focusing on measuring nest and population density in plantations with varying ages. Important research in understanding the role of Oecophylla as a potential biological control agent in plantations. The purpose of the study was to determine the population density and nest as indicators of

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17

Lara-Juárez, Prisilla, Pedro Castillo-Lara, Flor de M. Tristán-Patiño, Juan A. Rendón-Huerta, and Juan R. Aguirre-Rivera. "Range site and condition effects on “escamoles” ant (Liometopum apiculatum Mayr) nest density." Revista Chapingo Serie Ciencias Forestales y del Ambiente XXII, no. 3 (2016): 285–302. http://dx.doi.org/10.5154/r.rchscfa.2015.04.016.

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18

Vasconcellos, A., G. G. Santana, and A. K. Souza. "Nest spacing and architecture, and swarming of males of Dinoponera quadriceps (Hymenoptera, Formicidae) in a remnant of the Atlantic Forest in Northeast Brazil." Brazilian Journal of Biology 64, no. 2 (2004): 357–62. http://dx.doi.org/10.1590/s1519-69842004000200022.

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Dinoponera quadriceps is a queenless neotropical ponerinae ant. Nest spacing and abundance were investigated in a remnant of the Atlantic forest in Northeast Brazil. Males were captured with a light trap between August 1994 and July 1996. Nest density varied from 15 to 40 ha-1. An overdispersion of nests suggests that the intraspecific competition may be an important factor regulating their spatial arrangement. Territory size was correlated with worker population size of the colonies. The nests had up to 16 chambers, with variations in their architecture closely related to habitat diversificat

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19

Trigos, Peral Gema, Bálint Marko, Hania Babik, et al. "Differential impact of two dominant Formica ant species (Hymenoptera, Formicidae) on subordinates in temperate Europe." Journal of Hymenoptera Research 50 (June 27, 2016): 97–116. https://doi.org/10.3897/JHR.50.8301.

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Competition is one of the basic mechanisms shaping ant assemblages. Dominant territorial species are known to restrictively influence the traits of subordinates in various ways. However, there could be differences in the effects of dominants due to differences in their colony structure, lifestyle and also behaviour. We tested this hypothesis in natural circumstances in an area where a Formica exsecta Nyl. supercolony neighbours a strong population of the European slave-maker F. sanguinea Latr. For the purpose of our study three different sites were selected: one dominated by F. exsecta, a neig

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20

Domínguez-Haydar, Yamileth, Bleydis Gutierrez-Rapalino, and Juan Jose Jiménez. "Density and Spatial Distribution of Nests of Ectatomma ruidum and Pheidole fallax (Hymenoptera: Formicidae), as Response to the Recovery of Coal Mine Areas." Sociobiology 65, no. 3 (2018): 415. http://dx.doi.org/10.13102/sociobiology.v65i3.2880.

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In this study, the spatial pattern of two ant species of different feeding habits, Ectatomma ruidum and Pheidole fallax (Hymenoptera: Formicidae) was assessed in rehabilitated areas of “Cerrejón” coal mine (Colombia). We tested whether there is a relationship between spatial distribution pattern, age rehabilitation and temporal changes. Three sites with different ages of rehabilitation (1, 9 and 20 years) and a secondary forest were sampled during dry and rainy seasons. Within four plots (6 x 40m) per site, we located, counted and estimated the minimum distance among nests. Our results indicat

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21

Stukalyuk, S. "Potential for Transition to a Polygynous-Supercolonial Demography in Lasius niger (Hymenoptera, Formicidae)." zoodiversity 59, no. 2 (2025): 148–68. https://doi.org/10.15407/zoo2025.02.148.

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The formicine ant, Lasius niger (Linnaeus, 1758), is one of the most abundant and intensively studied Palaearctic ant species, and was previously thought to form exclusively monogynous colonies, spread by single-queen dispersal, and occur claustrally. Two closely neighboring nest complexes of L. niger were observed in 2017–2020 in an abandoned field near Kyiv / Ukraine. Nest complex A contained 14650 nest mounds on an area of 11.8 ha and nest complex B contained 15600 mounds on an area of 13.3 ha. Data were collected by measuring the height and diameter of nest mounds and counting the number o

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22

Stukalyuk, S. "Potential for Transition to a Polygynous-Supercolonial Demography in Lasius Niger (Hymenoptera, Formicidae)." zoodiversity 59, no. 2 (2025): 149–70. https://doi.org/10.15407/zoo2025.02.149.

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The formicine ant, Lasius niger (Linnaeus, 1758), is one of the most abundant and intensively studied Palaearctic ant species, and was previously thought to form exclusively monogynous colonies, spread by single-queen dispersal, and occur claustrally. Two closely neighboring nest complexes of L. niger were observed in 2017–2020 in an abandoned field near Kyiv / Ukraine. Nest complex A contained 14650 nest mounds on an area of 11.8 ha and nest complex B contained 15600 mounds on an area of 13.3 ha. Data were collected by measuring the height and diameter of nest mounds and counting the number o

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23

Antonova, Vera, Dimitar Kyonev, and Martin Marinov. "Preliminary results of the monitoring of protected red wood ants in Rila Mountain, Bulgaria." Historia naturalis bulgarica 46, no. 10 (2024): 253–63. http://dx.doi.org/10.48027/hnb.46.101.

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This study aimed to assess the present distribution of red wood ant species and changes in their nest density over a period of eight years in the area of Rila Mt, Bulgaria. One of the sampling areas was the Parangalitza Biosphere Reserve, the nation’s second oldest protected area. The other two sites are Rila Monastery region and Samokov region. Field monitoring via transect sampling was conducted in 2014 and 2022. We marked 35 nests along 29 transects in 2014 and 76 nests along 27 transects in 2022 of the red wood ants Formica rufa Linnaeus, 1761, F. lugubris Zetterstedt, 1838, F. pratensis R

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24

Antonova, Vera, Dimitar Kyonev, and Martin Marinov. "Preliminary results of the monitoring of protected red wood ants in Rila Mountain, Bulgaria." Historia naturalis bulgarica 46, no. 10 (2024): 253–63. https://doi.org/10.48027/hnb.46.101.

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Анотація:

This study aimed to assess the present distribution of red wood ant species and changes in their nest density over a period of eight years in the area of Rila Mt, Bulgaria. One of the sampling areas was the Parangalitza Biosphere Reserve, the nation’s second oldest protected area. The other two sites are Rila Monastery region and Samokov region. Field monitoring via transect sampling was conducted in 2014 and 2022. We marked 35 nests along 29 transects in 2014 and 76 nests along 27 transects in 2022 of the red wood ants Formica rufa Linnaeus, 1761, F. lugubris Zetterstedt, 1838, F. prate

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25

Mezger, Dirk, and Martin Pfeiffer. "Is nest temperature an important factor for niche partitioning by leaf-litter ants (Hymenoptera: Formicidae) in Bornean rain forests?" Journal of Tropical Ecology 26, no. 4 (2010): 445–55. http://dx.doi.org/10.1017/s0266467410000209.

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Abstract:We tested the hypothesis that species of a diverse leaf-litter ant community are separated by the temperature preferences of their broods along a thermal gradient. Therefore, temperature preferences of brood-tending workers from 41 ant species co-occurring in four types (alluvial, limestone, kerangas and dipterocarp forest) of primary rain forest in Sarawak, Malaysia were measured in an experimental set-up. Preferred temperatures of species ranged from 16.0 °C to 31.7 °C, with the median at 25.8 °C. The ten commonest species (n ≥ 4) showed significantly different temperature preferenc

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26

Chang, Joanna, Scott Powell, Elva J. H. Robinson, and Matina C. Donaldson-Matasci. "Nest choice in arboreal ants is an emergent consequence of network creation under spatial constraints." Swarm Intelligence 15, no. 1-2 (2021): 7–30. http://dx.doi.org/10.1007/s11721-021-00187-5.

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AbstractBiological transportation networks must balance competing functional priorities. The self-organizing mechanisms used to generate such networks have inspired scalable algorithms to construct and maintain low-cost and efficient human-designed transport networks. The pheromone-based trail networks of ants have been especially valuable in this regard. Here, we use turtle ants as our focal system: In contrast to the ant species usually used as models for self-organized networks, these ants live in a spatially constrained arboreal environment where both nesting options and connecting pathway

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27

Morrison, Colin R. "Predation of top predators: cane toad consumption of bullet ants in a Panamanian lowland wet forest." Journal of Tropical Ecology 34, no. 6 (2018): 390–94. http://dx.doi.org/10.1017/s0266467418000342.

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Abstract:Despite a clear consensus about the major roles that predators play in shaping ecological communities, descriptive studies of interactions between ecologically important top predator species are underreported. Native cane toad consumption of predatory bullet ant nests was verified through multiple, independent observations taken on Pipeline Road, Panama. Cane toad predation led to the extirpation of 42% of the nests within a 1.05 km2 area that is characterized as a late-successional wet forest. This predation pressure could be significant given the high rate of predation events and lo

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28

Achmad, Harun, Supriatno Supriatno, Marhamah Marhamah, and Rasmidar Rasmidar. "SP-C1 tongue squamous cell carcinoma, ethanol fraction of ant nest plant, proliferation." Journal of Dentomaxillofacial Science 13, no. 1 (2014): 1. http://dx.doi.org/10.15562/jdmfs.v13i1.378.

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Squamous cell carcinoma at the tongue is a malignant tumor derived from epithelial mucosa of the oral cavity. Thisstudy aims to identify and to analyze the effect of flavonoid fraction of etanol of ant nests plants (Myrmecodia pendans)as an anti-cancer barrier against the proliferation of SP-C1 tongue cancer cells. The study was conducted with pureexperimental laboratory methods using Supri's-Clone 1 (SP-C1) human tongue cancer cells cultured. Researchgradually begins with determination, extraction and fractionation ant nests plant, cytotoxicity test to get a fraction offlavonoids that have an

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29

Hoffmann, B. D. "Integrating biology into invasive species management is a key principle for eradication success: the case of yellow crazy ant Anoplolepis gracilipes in northern Australia." Bulletin of Entomological Research 105, no. 2 (2014): 141–51. http://dx.doi.org/10.1017/s0007485314000662.

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AbstractThe lack of biological knowledge of many invasive species remains as one of the greatest impediments to their management. Here I detail targeted research into the biology of the yellow crazy ant Anoplolepis gracilipes within northern Australia and detail how such knowledge can be used to improve the management outcomes for this species. I quantified nest location and density in three habitats, worker activity over 24 h, infestation expansion rate, seasonal variation of worker abundance and the timing of production of sexuals. Nests were predominantly (up to 68%) located at the bases of

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Nuriza, Rizky Alfiqi, Setyo Sri Rahardjo, and Lilik Wijayanti. "The Effect of Ethanol Ants Nest Extract on Profil Lipid Mice Model Obesity with Type 2 Diabetes." Poltekita : Jurnal Ilmu Kesehatan 17, no. 3 (2023): 548–54. http://dx.doi.org/10.33860/jik.v17i3.3212.

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The Ants Nest plant (Myrmecodia pendans) is known to have the potential to reduce blood glucose cholesterol, LDL (Low-Density Lipoprotein), and HDL (High-Density Lipoprotein) in obese patients with Type 2 Diabetes (T2D) because it contains high flavonoid and tannin content that can prevent oxidative stress and inhibit the work of pancreatic β cells, α-glucosidase work, Glut-2, and lipase enzymes. This study aims to study the effect of the management of Ethanol Ants Nest Extract (EANE) on changes in the cholesterol, LDL, and HDL levels of obese rats with T2D. The extraction of the ants nest was

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Härkönen, Salla K., and Jouni Sorvari. "Effect of host species, host nest density and nest size on the occurrence of the shining guest ant Formicoxenus nitidulus (Hymenoptera: Formicidae)." Journal of Insect Conservation 21, no. 3 (2017): 477–85. http://dx.doi.org/10.1007/s10841-017-9986-y.

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Braman, Charles A., Joseph B. Pfaller, Kristina L. Williams, and Brian T. Forschler. "Presence of Native and Non-native Ants Linked to Lower Emergence Success of Loggerhead Sea Turtle Nests: Implications for Management." Environmental Entomology 50, no. 3 (2021): 649–57. http://dx.doi.org/10.1093/ee/nvab021.

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Abstract Ants have been suggested as one of many population pressures sea turtles face potentially affecting nesting-beach survival of eggs and hatchlings. However, little is known about the extent to which ants act as incidental or primary mortality factors. Most research has focused on New World fire ants (genus Solenopsis), with confirmed records of other ant species interactions with sea turtle nests in situ being rare. Our study documented the ant species associated with loggerhead sea turtle Caretta caretta (Linnaeus) (Testudines: Cheloniidae) nests in Georgia and determined if ant prese

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Davidson, Jacob D., and Deborah M. Gordon. "Spatial organization and interactions of harvester ants during foraging activity." Journal of The Royal Society Interface 14, no. 135 (2017): 20170413. http://dx.doi.org/10.1098/rsif.2017.0413.

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Local interactions, when individuals meet, can regulate collective behaviour. In a system without any central control, the rate of interaction may depend simply on how the individuals move around. But interactions could in turn influence movement; individuals might seek out interactions, or their movement in response to interaction could influence further interaction rates. We develop a general framework to address these questions, using collision theory to establish a baseline expected rate of interaction based on proximity. We test the models using data from harvester ant colonies. A colony

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Ingram, Krista K. "Flexibility in nest density and social structure in invasive populations of the Argentine ant, Linepithema humile." Oecologia 133, no. 4 (2002): 492–500. http://dx.doi.org/10.1007/s00442-002-1069-3.

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Velanita, Siti, Efa Ismardianita, and Andries Pascawinata. "The effect of ant-plant (Hydnophytum formicarum) ethanol extract on collagen fibers for wound healing after tooth extraction in the guinea pig (Cavia cobaya)." Padjadjaran Journal of Dentistry 31, no. 3 (2019): 189. http://dx.doi.org/10.24198/pjd.vol31no3.19328.

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Introduction: Tooth extraction causes tissue damage around the socket. Wound healing is essential for repairing damaged tissues. One of the medicinal plants often used is ant-plant (Hydnophytum formicarum), which contains flavonoids, triterpenoids, saponins and tannins. This research was aimed to determine the effect of ant-plant ethanol extract on the density of collagen fibers for wound healing after tooth extraction in the guinea pig (Cavia cobaya). Methods: The type of research was true experimental with a post-test only control group design. The study used 48 male guinea pig divided into

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Eldridge, DJ. "Effect of ants on sandy soils in semi-arid eastern Australia - Local distribution of nest entrances and their effect on infiltration of water." Soil Research 31, no. 4 (1993): 509. http://dx.doi.org/10.1071/sr9930509.

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The influence of the funnel ant (Aphaenogaster barbigula) on water infiltration was studied on an aeolian soil in a semi-arid Callitris glaucophylla woodland in eastern Australia. At the study site at Yathong Nature Reserve, densities of up to 37 nest entrances m-2 were recorded in some areas, equivalent to a density of 88 000 entrances ha-1 over small areas or 0.9% of the surface area of the landscape. Seventy-two per cent of the entrances were actively being used by the ants. Steady-state water infiltration on soils with entrances averaged 23.3 mm min-1 which was about four times that on ent

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Camargo, Roberto da Silva, Ricardo Toshio Fujihara, and Luiz Carlos Forti. "Nest Digging by Leaf-Cutting Ants: Effect of Group Size and Functional Structures." Psyche: A Journal of Entomology 2012 (2012): 1–4. http://dx.doi.org/10.1155/2012/426719.

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Leaf-cutting ant workers dig underground chambers, for housing their symbiotic fungus, interconnected by a vast quantity of tunnels whose function is to permit the entrance of food (leaves), gaseous exchanges, and movement of workers, offspring, and the queen. Digging is a task executed by a group of workers, but little is known about the group effect and group-constructed functional structures. Thus, we analyzed the structures formed by worker groups (5, 10, 20, and 40 individuals) of the leaf-cutting ant,Atta sexdens rubropilosa, for 2 days of excavation. The digging arena was the same for t

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MIRAMONTES, OCTAVIO, RICARD V. SOLE, and B. C. GOODWIN. "NEURAL NETWORKS AS SOURCES OF CHAOTIC MOTOR ACTIVITY IN ANTS AND HOW COMPLEXITY DEVELOPS AT THE SOCIAL SCALE." International Journal of Bifurcation and Chaos 11, no. 06 (2001): 1655–64. http://dx.doi.org/10.1142/s0218127401002912.

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We discuss a Neural Network model generating activation signals for locomotion in ants. The signals are chaotic and so are the temporal patterns of spontaneous activations in single ants. Active ants are able to move and interact with other nest mates. This process of movement-interaction generates periodic pulses of activity once the number of individuals reaches a certain density value. An algorithmic complexity measure is used for identifying accurately the transition from chaos into order. Finally, an Iterated Function System analysis reveals the richness of dynamical behavior that emerges

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Kolay, Swetashree, and Sumana Annagiri. "Tight knit under stress: colony resilience to the loss of tandem leaders during relocation in an Indian ant." Royal Society Open Science 2, no. 9 (2015): 150104. http://dx.doi.org/10.1098/rsos.150104.

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The movement of colonies from one nest to another is a frequent event in the lives of many social insects and is important for their survival and propagation. This goal-oriented task is accomplished by means of tandem running in some ant species, such as Diacamma indicum . Tandem leaders are central to this process as they know the location of the new nest and lead colony members to it. Relocations involving targeted removal of leaders were compared with unmanipulated and random member removal relocations. Behavioural observations were integrated with network analysis to examine the difference

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Wetterer, James K. "Forager Polymorphism and Foraging Ecology in the Leaf-Cutting Ant,Atta colombica." Psyche: A Journal of Entomology 102, no. 3-4 (1995): 131–45. http://dx.doi.org/10.1155/1995/10717.

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I compare forager size and foraging selectivity of the leaf-cutting antAtta colombicaand that of its close relativeAtta cephalotes. In both species, larger foragers cut fragments of greater mass and area, and at vegetation sources of greater specific density (mass/area). However, the size-range ofA. colombicaforagers (1.5–56.8 mg) was wider than the range typical forA. cephalotes(1.4–32.1 mg). InA. colombica, the maxima workers (24–60 mg) commonly participate in foraging, making up 13% of all foragers in this study and in a previous study. In contrast,A. cephalotesmaxima workers (24–100 mg) ra

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Bebawi, F. F., and S. D. Campbell. "Interactions between meat ants (Iridomyrmex spadius) and bellyache bush (Jatropha gossypiifolia)." Australian Journal of Experimental Agriculture 44, no. 12 (2004): 1157. http://dx.doi.org/10.1071/ea03194.

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Understanding the dispersal of weed species is important for the development of effective control strategies. In this study, a series of experiments was conducted to clarify the role that meat ants (Iridomyrmex spadius) play in dispersing bellyache bush (Jatropha gossypiifolia), an exotic shrub currently invading the rangelands of northern Australia. The nutrient composition of food [lipids (fatty acids), fat and soluble carbohydrates] provided by bellyache bush seed components [caruncle, exotegmen and seed (without caruncle and exotegmen)] was identified. Seed components were rich in lipids,

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Popp, Stefan, and Anna Dornhaus. "Collective search in ants: Movement determines footprints, and footprints influence movement." PLOS ONE 19, no. 4 (2024): e0299432. http://dx.doi.org/10.1371/journal.pone.0299432.

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Collectively searching animals might be expected to coordinate with their groupmates to cover ground more evenly or efficiently than uncoordinated groups. Communication can lead to coordination in many ways. Previous work in ants suggests that chemical ‘footprints’, left behind by individuals as they walk, might serve this function by modulating the movement patterns of following ants. Here, we test this hypothesis by considering the two predictions that, first, ants may turn away from sites with higher footprint concentrations (klinotaxis), or, second, that they may change their turning patte

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Tudor, Anesty E., Christopher K. Starr, and Kristen Mohammed. "Trophic Ecology of the Ant Pachycondyla crassinoda (Formicidae: Ponerinae) in a Lowland Neotropical Forest." Sociobiology 63, no. 2 (2016): 744. http://dx.doi.org/10.13102/sociobiology.v63i2.848.

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ABSTRACT- Pachycondyla crassinoda (Latr. 1902) is one of the largest ant species in the New World tropics. We studied its foraging habits in the field in a lowland forest in Trinidad, West Indies, with supplemental observations in the laboratory. At our study site the density of colonies was estimated at 144/ha. Like other members of its genus, P. crassinoda forages on the forest floor, apparently never climbing trees or other plants. Foraging is mostly limited to periods when the ground is relatively dry and is largely close to the nest. Ants searched under fallen leaves at a high frequency a

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Novgorodova, Tatiana, and Dmitry Taranenko. "Hidden Potential of the Subdominant Ant Formica lemani Bondroit (Hymenoptera: Formicidae): The Formation of Large Nest Complexes and Restructuring Behavioural Stereotypes." Forests 15, no. 8 (2024): 1322. http://dx.doi.org/10.3390/f15081322.

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The potential of subdominant ants of the Formica fusca group and their role in forests are still underestimated. Since ant behaviour is dependent on colony size, studying the functional organisation of nest complexes (NC) is most promising for a more accurate assessment of species capabilities. The study focused on the main ecological and ethological issues of the life activity of Formica lemani Bondroit within large NC (>150 nests) and beyond. After preliminary mapping of the F. lemani NC (main nests, trails, foraging trees), off-nest activity, aggressiveness, and trophobiotic relationship

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Hasan, M. K. Nik, I. Abdul Wahab, H. H. Mizaton, and M. A. Rasadah. "Efficacy of Myrmecodia Platytyrae (MyP) Water Extract in Reducing Cholesterol Level in Hypercholesterolemia Induced Sprague Dawley Rat." Malaysian Journal of Medical and Biological Research 7, no. 1 (2020): 27–38. http://dx.doi.org/10.18034/mjmbr.v7i1.491.

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Myrmecodia plant or ant-nest plant is from Rubiaceae family. Rubiaceae are mainly tropical woody plants, consist mostly of trees and shrubs and can be found in temperate regions. Myrmecodia platytyrea (MyP) are believed to have medicinal value. This study was designed in order to investigate the effect of MyP extract as anti hypercholesterolemic agent. The results showed that treatment of MyP can significantly reduce (p<0.05) low density lipoprotein (LDL) compared to negative control group. The extract was significantly increase (p<0.05) high density lipoprotein (HDL) concentration compa

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Hasan, M. K. Nik, I. Abdul Wahab, H. H. Mizaton, and M. A. Rasadah. "Efficacy of Myrmecodia Platytyrae (MyP) Water Extract in Reducing Cholesterol Level in Hypercholesterolemia Induced Sprague Dawley Rat." Malaysian Journal of Medical and Biological Research 7, no. 2 (2020): 69–80. http://dx.doi.org/10.18034/mjmbr.v7i2.491.

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Анотація:

Myrmecodia plant or ant-nest plant is from Rubiaceae family. Rubiaceae are mainly tropical woody plants, consist mostly of trees and shrubs and can be found in temperate regions. Myrmecodia platytyrea (MyP) are believed to have medicinal value. This study was designed in order to investigate the effect of MyP extract as anti hypercholesterolemic agent. The results showed that treatment of MyP can significantly reduce (p<0.05) low density lipoprotein (LDL) compared to negative control group. The extract was significantly increase (p<0.05) high density lipoprotein (HDL) concentration compa

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McGlynn, Terrence P., Ryan M. Fawcett, and Deborah A. Clark. "Litter Biomass and Nutrient Determinants of Ant Density, Nest Size, and Growth in a Costa Rican Tropical Wet Forest." Biotropica 41, no. 2 (2009): 234–40. http://dx.doi.org/10.1111/j.1744-7429.2008.00465.x.

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Báthori, Ferenc, Zoltán Rádai, and András Tartally. "The effect of Rickia wasmannii (Ascomycota, Laboulbeniales) on the aggression and boldness of Myrmica scabrinodis (Hymenoptera, Formicidae)." Journal of Hymenoptera Research 58 (August 31, 2017): 41–52. https://doi.org/10.3897/jhr.58.13253.

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The interactions of ectosymbiotic Laboulbeniales (Ascomycota) fungi and their hosts are rather understudied. Rickia wasmannii Cavara is a common ant-associated Laboulbeniales species that has been reported in 17 countries of Europe, and frequently infects Myrmica scabrinodis Nylander, 1846 (Hymenoptera: Formicidae), a common ant species host, in high density. These make M. scabrinodis and R. wasmannii appropriate model organisms for studies on fungal host-ectosymbiont interactions. Aggressiveness and boldness of infected and uninfected M. scabrinodis workers from northern and eastern Hungary w

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Higgins, R. J., and B. S. Lindgren. "An evaluation of methods for sampling ants (Hymenoptera: Formicidae) in British Columbia, Canada." Canadian Entomologist 144, no. 3 (2012): 491–507. http://dx.doi.org/10.4039/tce.2012.50.

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AbstractAnts (Hymenoptera: Formicidae) are ubiquitous and of considerable ecological interest, yet poorly studied in Canada. Given their natural history attributes and relatively low density and diversity in cool boreal forests, there is a need to evaluate the applicability of commonly used approaches to sampling and analysis. We examined the relative utility of two pitfall trap designs, mini-Winkler litter extractions, and colony versus forager sampling for ecological studies. First, we found that Laurent (conventional) and Nordlander (modified to exclude larger nontarget organisms) pitfall t

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Perron, Muriel, Isabelle Glanzmann, and Anne Freitag. "Habitatselektion von zwei Waldameisenarten (Formica rufa und F. polyctena)." Schweizerische Zeitschrift fur Forstwesen 170, no. 1 (2019): 32–39. http://dx.doi.org/10.3188/szf.2019.0032.

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Habitat selection of two wood ant species (Formica rufa and F. polyctena) Wood ants play an important role in the forest ecosystem, but knowledge about their spatial distribution is often outdated or scarce in Switzerland. Species-specific habitat requirements remain poorly understood, especially for the two sympatric species Formica rufa and F. polyctena, preventing the development of efficient conservation measures. Following the survey of wood ant mounds in the cantons of Basel-Landschaft and Basel-Stadt of 2015/2016, we developed a predictive hierarchical habitat model to investigate the r

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