RefDoc
Haut

Faire une nouvelle recherche
Make a new search
Lancer la recherche


Titre du document / Document title

Queen number in a supercolony of the invasive garden ant, Lasius neglectus

Auteur(s) / Author(s)

ESPADALER X. (1) ; REY S. (1) ; BERNAL V. (1) ;

Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)

(1) CREAF and Unitat d'Ecologia, Universitat Autònoma de Barcelona, 08193 Bellaterra, ESPAGNE

Résumé / Abstract

We have analysed the distribution of queens under stones at the core and at the periphery of a supercolony of Lasius neglectus that occupies 14 ha at Seva (NE Spain). Queens were not found alone, but rather within worker groups. Density at the center (mean ± s.d.: 1.38 ± 2.87 queens/stone; n = 100 stones; range 0-14) was not different from density at the periphery (1.18 ± 2.38; range 0-12). The estimate of the number of queens found under stones for the whole colony is about 35500. Egg-laying rates for queens from these two zones were obtained in the laboratory, at three different temperatures, and there were no differences detected. The presence of brood stages, from eggs to cocoons, was also similar in both zones. The homogeneous distribution of colony components may indicate that the area occupied by L. neglectus has already reached saturation. With a different technique - soil core extraction - we could estimate the density of workers in the soil: 800 workers per m2. Soil cores had 6.28 ± 20.0 workers/core (range: 0-173), giving a rough estimate of 1.12 x 108 workers in the soil, for the entire colony. Though few, some queens were also recovered from soil cores. Queen numbers for the supercolony, based on queens found in the soil, reaches the astounding level of 360000. Numbers are consistent with previous predictions.

Revue / Journal Title

Insectes sociaux    ISSN  0020-1812 

Source / Source

2004, vol. 51, no3, pp. 232-238 [7 page(s) (article)] (35 ref.)

Langue / Language

Anglais

Editeur / Publisher

Birkhäuser, Basel, SUISSE  (1954) (Revue)

Mots-clés anglais / English Keywords

Invertebrata

;

Arthropoda

;

Insecta

;

Hymenoptera

;

Aculeata

;

Formicoidea

;

Social insect

;

Population dynamics

;

Reproduction

;

Formicidae

;

Worker insect

;

Population density

;

Egg laying

;

Polygyny

;

Queen insect

;

Spatial distribution

;

Mots-clés français / French Keywords

Invertebrata

;

Arthropoda

;

Insecta

;

Hymenoptera

;

Aculeata

;

Formicoidea

;

Insecte social

;

Dynamique population

;

Reproduction

;

Lasius neglectus

;

Formicidae

;

Ouvrière insecte

;

Densité population

;

Ponte

;

Polygynie

;

Reine insecte

;

Répartition spatiale

;

Mots-clés espagnols / Spanish Keywords

Invertebrata

;

Arthropoda

;

Insecta

;

Hymenoptera

;

Aculeata

;

Formicoidea

;

Insecto social

;

Dinámica población

;

Reproducción

;

Formicidae

;

Obrera insecto

;

Densidad población

;

Puesta

;

Poliginia

;

Reina insecto

;

Distribución espacial

;

Mots-clés d'auteur / Author Keywords

Egg-laying rate

;

Lasius neglectus

;

polygyny

;

queen distribution

;

worker density

;

Localisation / Location

INIST-CNRS, Cote INIST : 2631, 35400011399269.0060

Nº notice refdoc (ud4) : 16056480



Faire une nouvelle recherche
Make a new search
Lancer la recherche
Bas