Results 161 to 170 of about 226,785 (205)

The ontogeny of selection on genetic diversity in harvester ants

Proceedings of the Royal Society B: Biological Sciences, 2022
Selection may favour traits throughout an individual's lifetime or at a particular life stage. In many species of social insects, established colonies that are more genetically diverse outperform less diverse colonies with respect to a variety of traits that contribute to fitness, but whether selection favours high diversity in ...
Diane C. Wiernasz, Blaine J. Cole
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Diversity control in ant colony optimization

Artificial Life and Robotics, 2004
Optimization inspired by cooperative food retrieval in ants has been unexpectedly successful and has been known as ant colony optimization (ACO) in recent years. One of the most important factors to improve the performance of the ACO algorithms is the complex trade-off between intensification and diversification.
Yoshiyuki Nakamichi, Takaya Arita
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Enigmatic Biodiversity Correlations: Ant Diversity Responds to Diverse Resources

Science, 2004
A pattern noted in ecology is that diversity at one level begets diversity at other levels. In the case of consumers competing for similar resources, the diversity of those resources is thought to provide some degree of niche diversification in which a diverse set of consumer species can coexist.
Inge, Armbrecht, Ivette, Perfecto, John, Vandermeer   +2 more
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Periodicity and diversity in ant mating flights

Comparative Biochemistry and Physiology Part A: Physiology, 1992
1. Flight hours and seasons are alike within species, but differ among species and among genera. 2. Laboratory studies indicate internal circadian control of the phase relation to the light-dark cycle, with field evidence for modification by temperature (or other environmental variables). 3.
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Sensitive Ants: Inducing Diversity in the Colony

2009
A metaheuristic called Sensitive Ant Model (SAM) for solving combinatorial optimization problems is developed. The proposed model is based on the Ant Colony System (ACS) algorithm in which agents cooperate indirectly using pheromone trails. SAM improves and extends the ACS approach by endowing each agent of the model with properties that induce ...
Camelia-Mihaela Pintea, Camelia Chira, Dumitru Dumitrescu   +2 more
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Functional diversity of ant-associated bacterial communities

Biology Bulletin, 2016
It was found that ants significantly affect the physiological activity and functional diversity of soil microbial communities, and redistribution of biophilic elements (C and N) down through the profile occurs in anthills compared to the control soil, as well as their accumulation in the underground part of the ant nests.
A A, Dymova, M M, Umarov, N V, Kostina, M V, Golichenkov, M V, Gorlenko   +4 more
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Diversity and abundance of entomopathogenic fungi at ant colonies

Journal of Invertebrate Pathology, 2018
The purpose of this study was to identify whether entomopathogenic fungi in the genera Metarhizium and Beauveria were found at ant nests. These fungi have been used in studies of ant social immunity, however experimental conditions used may not normally be representative of that found within ant colonies.
Steven, Angelone, Michael J, Bidochka
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One ant's trash is another ant's treasure: Army ant middens provide resources for diverse ant assemblages

Biotropica, 2023
AbstractThe army ant Eciton burchellii boasts more animal associates than any other animal species yet described, but the relationship between army ants and other ant species has only been studied in the context of predation. The waste deposits (middens) of army ant colonies are nitrogen‐rich, a potentially high‐value nutrient source for leaflitter ...
Karen Y. Robles López, Jeffrey Sosa‐Calvo, Juliana M. Calixto, Emilia Zoppas de Albuquerque, Kaitlin M. Baudier   +4 more
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ANT DIVERSITY IN PITCHER-PLANT BOGS OF MASSACHUSETTS

Northeastern Naturalist, 2002
We conducted the first systematic inventory of ant species richness in pitcher-plant bogs of Massachusetts. Twenty-six species were collected in 18 bogs during 1999 and 2000. We collected the bog-specialist Myrmica lobifrons for the first time in Massachusetts and found that it occurred in bogs from the Berkshire Mountains to Nantucket.
Aaron M. Ellison, Elizabeth J. Farnsworth, Nicholas J. Gotelli   +2 more
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Patterns of Ant Diversity in the Natural Grasslands of Southern Brazil

Neotropical Entomology, 2021
In the south of Brazil, grasslands are naturally widespread over two different biomes, the Pampa in the southernmost region and within the Atlantic Forest in the northern portions. The natural grasslands of the state of Paraná comprise a very particular physiognomy composed of two distinct formations: the Campos Gerais and the grasslands of the ...
Weslly Franco, Heraldo Luis Vasconcelos, Rodrigo Machado Feitosa   +2 more
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