Dominance and fertility in a functionally monogynous ant

Heınze, Jürgen; Smith, Theodore A

doi:10.1007/bf00183306

Cited by 75 publications

(49 citation statements)

References 49 publications

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“…As shown in detail elsewhere (Heinze and Smith 1990), intermorphic queens in colonies of Leptothorax sp. A engaged in aggressive interactions directly after hibernation, which resulted in the formation of hierarchies.…”

Section: Queen Antagonism and Buddingmentioning

confidence: 66%

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Habitat structure, dispersal strategies and queen number in two boreal Leptothorax ants

Heınze

1993

Oecologia

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Abstract. In two nearctic ants, Leptothorax canadensis and Leptothorax sp. A, young queens may either found their own nest solitarily after mating or seek adoption into an established colony. Whether a queen disperses or not is associated with genetically determined queen morphology in Leptothorax sp. A. Whereas a majority of winged queens attempt solitary colony founding after mating, most wingless, intermorphic queens return to their maternal nests and new colonies are founded by budding after hibernation. The latter strategy appears to be correlated with patchy, isolated habitats, whereas in extended boreal forests dispersal on the wing is probably more common. Alternative dispersal strategies strongly affect the average number of queens per colony and seasonal fluctuations of colony structure.

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Section: Queen Antagonism and Buddingmentioning

confidence: 66%

“…In Leptothorax sp. A, on the other hand, queens engage in aggressive interactions and establish dominance hierarchies, in which only the top-ranking queen reproduces (Heinze and Smith 1990). Fighting among the queens started in early spring, when the ovaries of all queens were similarly undeveloped.…”

Section: Discussionmentioning

confidence: 99%

Habitat structure, dispersal strategies and queen number in two boreal Leptothorax ants

Heınze

1993

Oecologia

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“…In polygynic colonies a hierarchy between the queens can occur (Ross, 1988;Heinze, 1990;Heinze & Smith, 1990), or a queen multiple mate, not necessarily using the sperm of all males in the same proportion (Ross, 1986). In these situations, the degree of within-colony relatedness can be higher than expected because a smaller number of females and males effectively contribute to brood production; in other words, the effective size of the colony is smaller than the actual size.…”

Section: Discussionmentioning

confidence: 99%

Genetic variability and social structure of colonies in Acromyrmex heyeri and A. striatus (Hymenoptera: Formicidae)

2001

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The breeding structure of both colony and population of social insects can be examined by genetic analysis. Colonies of the leaf-cutting ants Acromyrmex heyeri and A. striatus (Myrmicinae, Attini) were thus analyzed for isoenzyme systems MDH, a-GPDH, and AMY to describe genotype variability and social structure. A total of five loci were investigated (three for amylase and one for each other system). Ninety-seven colonies of A. heyeri and 103 of A. striatus were sampled in different localities in Southern Brazil (State of Rio Grande do Sul). The genotypes found show the occurrence of monogyny and polygyny associated or not with polyandry, which indicates that the social organization is colony-specific. The polygyny and polyandry observed are likely to be responsible for the great genotypic diversity of the colonies. The average inbreeding coefficient per colony was higher in A. striatus than in A. heyeri, which may reflect the different patterns of production of sexual individuals and nuptial flight of those two species.Key words: Attini, genetic polymorphism, breeding structure, leaf-cutter ants. RESUMOVariabilidade genética e estrutura social das colônias de Acromyrmex heyeri e A. striatus (Hymenoptera, Formicidae)A estrutura de cruzamento de colônias e populações de insetos sociais pode ser observada por análise genética. Assim, colônias de formigas cortadeiras Acromyrmex heyeri e A. striatus (Myrmicinae, Attini) foram analisadas para os sistemas isoenzimáticos MDH, a-GPDH e AMY, a fim de descrever sua variabilidade genotípica e estrutura social. Foram investigados cinco locos (três para amilase e um para cada outro sistema), em 97 colônias de A. heyeri e 103 de A. striatus, amostradas em diversas localidades do Rio Grande do Sul. Os genótipos encontrados indicaram a ocorrência de monoginia e poliginia associadas ou não à poliandria, indicando que a organização social é colônia específica. Tanto a poliginia quanto a poliandria são responsáveis pela grande diversidade genotípica das colônias. O coeficiente de endocruzamento médio por colônia foi mais alto em A. striatus do que em A. heyeri e pode refletir os diferentes padrões de produção dos indivíduos sexuados e de vôo nupcial das duas espécies.Palavras-chave: Attini, polimorfismo genético, estrutura de cruzamento, formigas cortadeiras.Braz. J. Biol., 61(4): 667-678 668 DIEHL, E., ARAÚJO, A. M. de and CAVALLI-MOLINA, S.

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“…and in many boreal and alpine L. (Myrafant) several inseminated queens may be present (e.g., Buschinger, 1968;Alloway et al, 1982;Heinze and Buschinger, 1988;Stille et and openly aggressive interactions in early spring, resulting in the formation of rank orders. In each nest only the highest ranking queen began to lay eggs (Heinze and Smith, 1990;Heinze and Lipski, 1990;Heinze and Ortius, 1991).…”

Section: Life Histories Of Boreal Ants: Leptothoraxmentioning

confidence: 99%

Life Histories of Subarctic Ants

Heınze¹

1993

ARCTIC

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ABSTRACT. Ant species belonging to seven genera occur in habitats near the tree line in the Northern Hemisphere. An analysis of colony founding strategies suggests that in addition to physiological cold resistance, behavioral and sociometric adaptations might be important for survival and propagation of ants in subarctic biomes. Key words: polygyny, budding, ants, Formicidae, Leptothorax &SUMÉ. Des esphes de fourmis appartenant B sept genres vivent dans des habitats aux environs de la limite d'arbres. Une analyse des strat6gies de fondation des soci6t6s suggbre que, en plus d'une r6sistance physiologique au froid, des adaptations sociomktriques et comportementales pourraient être importantes pour la survie et la propagation dans les biomes subarctiques.

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Dominance and fertility in a functionally monogynous ant

Cited by 75 publications

References 49 publications

Habitat structure, dispersal strategies and queen number in two boreal Leptothorax ants

Habitat structure, dispersal strategies and queen number in two boreal Leptothorax ants

Genetic variability and social structure of colonies in Acromyrmex heyeri and A. striatus (Hymenoptera: Formicidae)

Life Histories of Subarctic Ants

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