Latin Name: Atta sexdens. Trivialname: Leafcutterant. Taxonomy: Subfamily: Myrmicinae Tribe: Attini. Keeping Level: (3) through their large Space- and. Atta sexdens, along with A. cephalotes, is the most widespread member of its genus. Its northern most range is Mexico, and extends through Central America. Atta sexdens: leafcutter ant: cubic feet), a colony of A. sexdens leafcutters may turn over kg ( pounds) of soil in tropical moist forests, stimulating.
|Published (Last):||9 April 2010|
|PDF File Size:||19.43 Mb|
|ePub File Size:||3.45 Mb|
|Price:||Free* [*Free Regsitration Required]|
Considerable variation in size occurs within the castes, some of which may be related to the division of labour.
The 4 Mesonotal zaehne short, the front conical.
At the end of the tunnel, she excavates a small chamber. No one male is likely able to produce enough sperm, so it is likely that ayta female mates with three to eight individuals during her revoada. The smallest of the four castes, gardener-nurses have an average head width of 1. The waste chambers are located at the sexdwns of the colony and are significantly larger.
These results support the hypothesis of information transfer, according atha which the worker needs to return to the nest at the beginning of foraging to transfer information to other workers and thus to establish the process of worker ant foraging. A six-year old colony has expanded to more than chambers, of which contain the fungus crop.
The queen then tends to the fungal garden and the developing larvae, feeding them fungus and trophic eggs. If spared from floods and human activity, the colony is usually destroyed only when the queen dies of old age, giving a successful colony a lifespan of 10—20 years.
Scape 3, 4 mm. The term only applies when the distinct groups can be found in the same area; graded or clinal variation throughout the range of a species e. Send us an email. They cut leaves to provide a substrate for the fungus farms which are their principal source of food. The seasonally flooded forest was dominated by Vochysia sexdeens Pohl. Thorax length 5, 4 mm. Foraging behavior secdens leaf cutting ants: The larvaeafter an additional three to four weeks pupate.
Wilson, ; Wirth, et al.
Fertilized eggs produce females. Breeding season End of October to Middle of December The eggs, larvae, and pupae of Atta sexdens are generally cared for by gardener-nurse caste workers, with some help from the within-nest specialists if the larvae or pupae are extremely large.
Male sperm storage also occurs, as sperm are retained in the male epididymes in mammals for a period that can, in some cases, extend over several weeks or more, but here we use the term to refer only to sperm storage by females. Check data from AntWeb.
Ecological EntomologyVol 4, Issue 3: Once the leaf fragments are inside the nest each is prepared with a drop of anal liquid which acts as a fertilizer. Help us improve the site by taking our survey.
ANTSTORE – Ameisenshop – Ameisen kaufen – Atta sexdens
Epinotum over the base of the short teeth, with swelling. Some researchers believe all fungus-growing ants cultivate just one species, Leucocoprinus gongylophorus.
By this time, the original colony has likely sent out several mating flights’ worth of queens dexdens populate other areas and propagate their genes. The fungus provides different types of nutrition to the ants, and the ants feed the fungus and protect it from parasitic fungi genus Escovopsis. Neotropical living in the southern part of the New World. Other workers follow this trail to the leaves.
Atta sexdens | ant |
The queen is the largest ant in the colony, often measuring an inch or longer. The queen, when founding a new colony, cultivates a fungus garden from a scrap of the garden in her previous colony. Front corners poorly marked. Atta sexdens divides its colony members into four major castes, each differentiated by a range of head widths.
Connect with us Help us improve the site atha taking our survey.
Kelknap Press of Harvard University Press. Wilson and Holldobler, ; Wilson, Colonies of Atta sexdens have a success rate of approximately 2. The colony often forms the centerpiece of a large jungle clearing. Iteroparous animals must, by definition, survive over multiple seasons or periodic condition changes. The purpose of this behavior is not known for certain, seddens may be to protect the exposed foragers from attacks by parasitic insects. The next size up, they have an average head width of 1.
Rather than eat the fungus, she lives on her own fat reserves, swxdens, and her wing muscles which she won’t need anymore.
Protruding hair quite short, in the middle of the forehead, occiput and sides of the head scattered, abundant sedens the thorax, and gaster Sielchen. A large change in the shape or structure of an animal that happens as the animal grows. Rusty brown color, blacked Gaster. They have sharp spikes or hooks rising from their heads and midsections to deter predators.
Change View Bolton World Catalog. Thoracic spines pointed, shorter than the front mesonotal spines epinotal spines.
More specifically refers to a group of organisms in which members act as specialized subunits a continuous, modular society – as in clonal organisms. Wilson and Holdobler experimented with a mature colony, reducing its size in proportion to give it the appearance of a young atha. Scutellum without a furrow.