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  • 1
    Electronic Resource
    Electronic Resource
    Growth-related changes in predation behavior in incipient colonies of the ponerine antEctatomma tuberculatum (Olivier) (1992)
    Springer
    Insectes sociaux 39 (1992), S. 129-143 
    Details
    ISSN: 1420-9098
    Keywords: Ants ; colony growth ; development of behavior ; predation strategy ; guarding behavior
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary We traced the development in the laboratory of 18 young colonies of the arboricolous ponerine antEctatomma tuberculatum. Colony foundation is of the partially-claustral type. During the early stages, when the colony is entirely dependent on the queen's behavior, the growth of the colony in terms of number of workers produced over time was relatively predictable. Afterwards, divergence in colony growth in function of the time increases as fast as the number of workers influences the efficiency of colony provisioning. Comparative analysis indicated clear changes in the predation behavior of foundresses and workers as colonies developed. For any stage of colony growth, all individuals provisioned the nest with dead prey or sugar-rich substances in the same way. However, prey hunting involves two different strategies. Foundresses and nanitic workers (originating from colonies with 9–15 workers) foraged actively, catching prey as the result of random encounters. Post-nanitic foragers (originating from colonies with 20–30 workers) and those from nature colonies developed an ambush strategy. Workers in these colonies gained experience at catching and handling prey during a period when they acted as nest guards, and so tended to be more efficient hunters than poorly experienced foundresses or nanitic foragers. The change in strategy was also positively correlated with an increase in the size of workers as the colony matured. A stable maximum in workers size is apparently reached only after the appearance of efficiently hunting foragers, presumably in numbers sufficient to provide adequate quantity and quality of larval food. Such a correlation between worker size and colony growth, assumed general for all ants, has not been demonstrated for Ponerinae before this work.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01249289
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  • 2
    Electronic Resource
    Electronic Resource
    Polyethism within hunters of the ponerine ant,Ectatomma ruidum Roger (Formicidae, Ponerinae) (1996)
    Springer
    Insectes sociaux 43 (1996), S. 111-118 
    Details
    ISSN: 1420-9098
    Keywords: Predation ; polyethism ; food exchange ; behavioral flexibility ; Ectatomma ruidum
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary During laboratory experiments, two categories of prey-foraging workers were found inEctatomma ruidum: stingers and transporters. When numerous live drosophila were offered to the ants, one group of hunters specialized in killing the prey and another in transporting simultaneously the dead drosophila to the nest. Sometimes, there was a transfer of prey by a stinger towards a transporter, after an active soliciting of the transporter by antennation or by using the forelegs. We found high positive correlations between the colony size and the number of ants in each subcaste. A negative correlation existed between the colony size and the proportion of hunters. However, the proportion of workers in the two behavioral subcastes of hunters was stable in spite of differences in colony size. The phylogenetic interest of this type of cooperative predation is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01242563
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  • 3
    Electronic Resource
    Electronic Resource
    Données sur la biologie de trois Diapriidae myrmécophiles:Plagiopria passerai MasnerSolenopsia imitatrix Wasmann etLepidopria pedestris Kieffer (1982)
    Springer
    Insectes sociaux 29 (1982), S. 561-568 
    Details
    ISSN: 1420-9098
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Description / Table of Contents: Summary Plagiopria passerai parasitizes queens' cocoons of the antPlagiolepis pygmaea. It is the first example of a myrmecophilous Diapriidæ perfecting its reproductive cycle at the expense of an ant host. Solenopsia imitatrix andLepidopria pedestris show a different biology. Samples from 218 colonies of the antDiplorhoptrum fugax have supplied 585 myrmecophiles. Their distribution in time and in space suggests that their reproduction takes place outside the ant nest, on an host yet unknown.
    Notes: Resume Plagiopria passerai parasite les cocons des reines de la fourmiPlagiolepis pygmaea. C'est le premier exemple d'un Diapriide myrmécophile accomplissant son cycle reproducteur aux dépens de la fourmi hôte. Solenopsia imitatrix etLepidopria pedestris présentent une biologie différente. Des échantillonnages répartis sur 218 sociétés de la fourmiDiplorhoptrum fugax ont fourni 585 myrmécophiles. Leur répartition dans le temps et dans l'espace amène à penser que leur reproduction s'accomplit à l'extérieur de la fourmilière chez un hôte encore inconnu.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02224225
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  • 4
    Electronic Resource
    Electronic Resource
    Ecology and behavior of the seed-eating ponerine antBrachyponera senaarensis (Mayr) (1994)
    Springer
    Insectes sociaux 41 (1994), S. 191-210 
    Details
    ISSN: 1420-9098
    Keywords: Ponerine ant ; colony foundation ; behavioral flexibility ; polymorphism ; age polyethism
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Colonies ofBrachyponera senaarensis, a species known for its adaptation to dry tropical conditions in Sudanes savannas, can also flourish in a wet tropical environment if it is particularly sunny and well-drained, e. g. in sandy regions. The feeding strategy of this species is opportunistic, with great flexibility of nesting, foraging, and diet according to the nature of the environmental constraints. Swarming takes place at the height of the rainy season. Foundation is partially claustral and haplometrotic or, more rarely, pleometrotic. Daily foraging activity of workers, which is mainly diurnal, peaks between 07∶00 h and 09∶00 h and then ceases between 11∶00 h and 14∶00 h. The size of workers varies between colonies, depending on the richness of their environment. Moreover, two worker subcastes may be distinguished in a colony: (1) individuals which are nonpigmented at birth and represent the majority of the worker population; and (2) larger workers, whose level of maturation is more advanced both morphologically and behaviorally, as shown by an age-polyethism study.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01240478
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  • 5
    Electronic Resource
    Electronic Resource
    Time-place learning by an invertebrate, the ant Ectatomma ruidum Roger
    Amsterdam : Elsevier
    Animal Behaviour 48 (1994), S. 236-238 
    Details
    ISSN: 0003-3472
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1006/anbe.1994.1232
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  • 6
    Electronic Resource
    Electronic Resource
    Individual foraging in the antPachycondyla apicalis (1989)
    Springer
    Oecologia 80 (1989), S. 65-69 
    Details
    ISSN: 1432-1939
    Keywords: Foraging benefit ; Capture rate ; Competition tate ; Food flow ; Foraging area
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary A model of individual foraging in social insects as presented that formalises the dynamics of foraging and concentrates on the collective rather than the individual benefit, quantifying the relationships between a colony's foraging area, number of foragers and foraging energy budget and the food sources' rate of arrival, disappearance and capture. A series of experiments, in which a number of prey were offered to colonies of the individually foraging antPachycondyla (ex-Neoponera) apicalis confirm the hypotheses implicit in the model and measured the rates of capture and competition. 60 days observation of 3P. apicalis colonies' foraging activity are summarised and used in conjunction with the model to obtain estimations of the density and rate of arrival of available prey in the foraging area. We examine how a colony's foraging benefit may be influenced by its foraging area, the number of foragers, and the forager/non-forager ratio and show that a colony's jocial structure strongly limits its potential foraging benefit. Within these limits,P. apicalis does not appear to be an optimal forager.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00789933
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  • 7
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    Individual foraging in the antPachycondyla apicalis (1989)
    Springer
    Details
    Publication Date: 1989-03-01
    Print ISSN: 0029-8549
    Electronic ISSN: 1432-1939
    Topics: Biology
    Published by Springer
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