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Topic: Differences between Atta and Acromyrmex

	Atta (Site not responding. Last check: 2007-10-26)
		Atta Fabricius, 1805 is a genus of New World ants of the subfamily Myrmicinae.
		Atta is one of the most spectacular of the attines, and colonies can comprise in excess of one million individuals.
		Atta has evolved to constantly change foodplant, preventing a colony from completely stripping of leaves and thereby killing trees, thus avoiding negative biological feedback on account of their sheer numbers.
	www.icyclopedia.com /encyclopedia/a/at/atta.html (402 words)

	[No title]
		Differences between deprived and non-deprived groups of the same strain and age were rare.
		Numbers of mites per infested bee differed between stocks in 4 of 21 samples; mite numbers tended to be greatest in survivor bees and least in buckfast bees.
		Differences in population sizes of adult bees and brood occurred in approximately half of samples taken in spring and autumn; survivor and buckfast colonies were most populous.
	www.nal.usda.gov /awic/pubs/Labinsects/Hymenoptera.htm (7148 words)

	Atta - Encyclopedia, History, Geography and Biography
		Atta is a genus of New World ants of the subfamily Myrmicinae.
		Workers of Atta colombica cutting all the leaves from a young tree
		This encyclopedia, history, geography and biography article about Atta contains research on
	www.arikah.net /encyclopedia/Atta (345 words)

	Sociobiology: Volume 42, Number 3, 2003
		The frequency of termites in dead wood was significantly different between pieces with a diameter of 1-5 cm and pieces with a diameter of ≥ 5 cm.
		The aim of this laboratory study was to investigate the interactions among workers of the genera Atta and Acromyrmex and the seeds of Mabea fistulifera.
		The correlation between the angle of inclination of nests and the shapes of comb and the petiole was analyzed in pre-emergence nests of a Japanese paper wasp, Polistes chinensis.
	www.csuchico.edu /biol/Sociobiology/volume/sociobiologyv42n32003.html (4729 words)

	Forager size of the leaf-cutting ant Atta sexdens (Hymenoptera: Formicidae) in a mature eucalyptus forest in Brazil (Site not responding. Last check: 2007-10-26)
		The leaf-cutting ant Atta sexdens (L., 1758) is common in primary forest throughout most of South America, but it readily invades new areas of agriculture or forestry, where it may become a serious pest (Cherrett 1986).
		Despite the significant relationship between ant and fragment masses, the linear model was a poor predictor of this relationship, even with a large number of observations and the log scale used.
		Reduction in the foraging activity of the leaf-cutting ant Atta sexdens caused by the phorid Neodohrniphora sp.
	rbt.ots.ac.cr /revistas/48-4/tonhasca.html (2203 words)

	Florida Entomologist, v. 81, n. 1, p. 61
		In contrast, ants belonging to two genera of attines, Acromyrmex and Atta, often depend on harvesting leaves for their fungal gardens and consequently are commonly called leaf-cutting ants.
		Earlier studies have found striking differences in the foraging and nesting ecology of Acromyrmex octospinosus (Reich), Acromyrmex volcanus (Wheeler), Acromyrmex coronatus (Fabricius), and Atta cephalotes (L.), the four species of leaf-cutting ants found on the Atlantic slope of Costa Rica (Wetterer, 1991, 1993, 1994a, b, 1995).
		Three nests were associated with artificial substrates: one under roofing slates piled in a gully, one between two pieces of sheet metal on the forest floor, and one in the cracked cement foundation of a building.
	www.fcla.edu /FlaEnt/fe81p61.html (2763 words)

	past work
		The Queen substance is a pheromone exuded by the Queen to identify herself to workers in the colony.
		The hydrocarbons of the comb wax varies between hives because depending on the plants that bees have been foraging on.
		The physical differences between the castes relate to their roles as workers; for example the smallest workers operate mainly within the colony, tending the fungus garden or brood.
	www.shef.ac.uk /aps/mbiolsci/stuart-hutchinson/pastwork.html (559 words)

	Sociobiology: Volume 42, Number 2, 2003
		Previous articles on slavemaker ants have identified different traits in slave species as a result of a potential coevolution with the slavemaker, demonstrating that species or populations used as slaves show an overall aggressive reaction against the slavemaker.
		No difference was observed in C content between nest and gallery walls, but the nitrogen content was greater in the chamber wall.
		Differences between inseminated and non-inseminated queens were found in tergites III and IV, ovarian development and amount of fatty tissues.
	www.csuchico.edu /biol/Sociobiology/volume/sociobiologyv42n22003.html (4786 words)

	[No title]
		They resemble fungus-garden cavities, but differ in that the cavity is irregular in shape, the substrate is tightly packed and has a silage-like odor, and workers and inquilines in them are torpid.
		Although there were no significant differences between competitor species in terms of their effect per unit of LAI, pin cherry tended to achieve much higher LAI (and biomass) than did striped maple and thus had a greater negative impact on red pine seedling growth.
		This study examines the opposite relationship between the two natural disasters, that is, the role of wildfires in the development of drought.
	www.srs.fs.usda.gov /test/desc.txt (17573 words)

	bioegog template
		Of the two generas, Atta and Acromyrmex, morphological differences are present (Lofgren and Vander Meer 1986).
		The leafcutter ants are different from other ants by their growing of fungi underground, they have not been thought to be derived from another ant, but they resemble the harvester ant, Pheidole.
		The Atta cephalotes is native only to the Americas and is primarily found in the Southern Hemisphere (Weber 1972).
	bss.sfsu.edu /geog/bholzman/courses/fall99projects/lcants.htm (1642 words)

	Quick and dirty research bibliography
		Autocatalytic interactions between the members of an animal group or society, and particularly chemically or visually mediated allelomimesis, can be an important factor in the organization of their collective activity.
		Different collective responses depending on the environmental conditions, and without change of individual behaviour, are shown to exist, associated with the possibility that the colony may be led to exploit one source or a group of sources preferentially.
		We investigated first the relationships between the wasps' hierarchical ranks and their behavioral profiles, secondly, successive alpha individuals were removed to examine the effects of rank change, particularly accession to alpha rank, on the behavioral profiles.
	www.dandelion.org /tim/ant_bib_june_2000.htm (10420 words)

	The Synergism Hypothesis
		By the same token, the synergies achieved by pack-hunting social animals (in terms of, say, capture efficiency or the size of the prey) may be viewed positively from the point of view of the predators but rather negatively from the point of view of their victims.
		The difference is synergy, and if rowing faster were a matter of survival (and it may very well have been at various times in our history as a species), the cooperators would be the fittest.
		In this case, an alteration in the relationship between the coloration of the trees and the wing pigmentation of the moths, as a consequence of industrial pollution, was an important proximate factor.
	www.complexsystems.org /publications/synhypo.html (16569 words)

	The First Farmers - National Zoo\| FONZ
		This Atta cephalotes is one type of leafcutter ant that grows crops of fungus in its nest.
		Among other differences, lower attines use a variety of materials to fertilize their fungi, from dead insects and feces to fallen leaves and grasses.
		Moreover, ants of different and distantly related species sometimes share identical cultivars of a fungus, suggesting that one species may acquire its domesticated fungus from another.
	nationalzoo.si.edu /Publications/ZooGoer/2004/4/antfarmers.cfm (4618 words)

	ISCE Poster Presentations, Brazil 2000
		In the Atta nests are observed accumulation of old fungus mass together with died ants and other material refused, which are commonly named as garbage.
		The difference of 11.8, 10.8 and 12.5 % between percentages of sulfur, phosphorus and nitrogen, respectively, indicate that ant garbage is poorest in these elements than nest material and suggest that they are consumed in the nest.
		Thus, the synthesis of all of the four possible stereoisomers of this alkane is necessary to establish the absolute configuration of the naturally occurring pheromone and also to clarify the relationship between absolute configuration and the bioactivity of the chiral pheromone.
	chemecol.org /meetings/brazil/posters/posters4.htm (3441 words)

	Ant Publications in the Year 1997
		Evidence that two different pathways are operating in the biosynthesis of the two tetraponerine skeletons." Chem.
		Ito, F. "Colony composition and morphological caste differentiation between ergatoid queens and workers in the ponerine ant genus Leptogenys in the oriental tropics." Ethol.
		"Provincial differences and spacial organisation of ant communities in southern taiga of West and Middle Siberia.
	www.cs.unc.edu /~hedlund/dev/ants/Bibliography/AntPub1997.htm (11364 words)

	Ant Publications of 2001
		"Interactions between extrafloral nectaries, aphids and ants: are there competition effects between plant and homopteran sugar sources?" Oecologia 129:577-584.
		Navarrete-Heredia, J.L. "Beetles associated with Atta and Acromyrmex ants (Hymenoptera: Formicidae: Attini)." Trans.
		Pavon, L.F., Mathias, M.I.C. "A morpho-histological and ultrastructural study of the mandibular glands of Atta sexdens worker ants (Hymenoptera: Formicidae)." Sociobiology 38:449-464.
	www.cs.unc.edu /~hedlund/dev/ants/Bibliography/AntPub2001.htm (4867 words)

	Organization for Tropical Studies
		The microclimate difference between a deciduous forest and adjacent riparian forest in Guanacaste Province.
		Young, A. An evolutionary-ecological model of the evolution of migratory behavior in the monarch butterfly, and its absence in the queen butterfly.
		Some differences between temperate and tropical populations of monarch (Danaus plexippus) and queen (Danaus gilippus) butterflies (Lepidoptera: Danaidae).
	www.ots.duke.edu /es/library/pv_biblio.shtml (6086 words)

	PubliKJ
		140- Chemical analyses of different larval instars and tissues of Pachycondyla (Neoponera) villosa (Formicidae: Ponerinae).
		56- Orientation in the ant Acromyrmex subterraneus molestans.
		Insectes Sociaux 33, 105-117, 1986, Jaffe K, Aragort W and Lopez M E. Control of Atta and Acromyrmex spp in pine tree plantations in the Venezuelan llanos.
	atta.labb.usb.ve /Klaus/publikj.htm (4183 words)

	ipomoeabatatas
		Cultivar differences in trypsin inhibitory activities of sweet potato leaves and tuberous roots.
		The effect of different shade levels on growth and tuber yield of sweet potato: II.
		The relationship between electron flux and the redox poise of the quinone pool in plant mitochondria: Interplay between quinol-oxidizing and quinone-reducing pathways.
	www.newcrops.uq.edu.au /listing/ipomoeabatatas.htm (11683 words)

	10,000 Birds - January 2006 (Site not responding. Last check: 2007-10-26)
		The official AOU split rendered the Stripe-headed Tanager into four distinct birds based on differences in vocalization as well as the plumages of both males and females.
		The particular species I stumbled upon was most likely Atta cephalotea, known as weewi aants in Belize kriol.
		Other Atta and Acromyrmex species, 38 in all according to the utterly fascinating Lurker's Guide to Leafcutter Ants, range from Texas and Arizona through Mexico, Central and South America, all the way down to Argentina.
	www.10000birds.com /january2006.htm (7604 words)

	Schedule for the NAS – IUSSI meeting (7-10 October)
		Reproductive isolation between hybridogenetic and non-hybridogenetic forms of the harvester ant Pogonomyrmex rugosus
		Behavioral differences in hybrid and non-hybrid Pogonomyrmex rugosus
		Similarities and differences between social insect and social shrimp societies
	lsweb.la.asu.edu /sirg/Schedule.htm (1560 words)

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