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120 results for “queen ant”
FIGURE 1 in Morphology of immatures of the thelytokous ant, Monomorium triviale Wheeler (Formicidae: Myrmicinae: Solenopsidini) with descriptions of the extraordinary last-instar queen larvae
FIGURE 1. Relationship between the maximum head capsule width (mm) and the maximum body length (mm) of Monomorium triviale larvae. The 1st instar (orange circle, n = 84), 2nd instar (blue triangle, n = 226), 3rd instar worker (green square, n =164) and last instar queen (brown cross, n = 116) larvae were determined by morphology and chaetotaxy. Histogram bin width of head capsule width and body length is 0.005 mm and 0.1 mm respectively.
FIGURE 4 in Morphology of immatures of the thelytokous ant, Monomorium triviale Wheeler (Formicidae: Myrmicinae: Solenopsidini) with descriptions of the extraordinary last-instar queen larvae
FIGURE 4. Third instar larva of Monomorium triviale. A. habitus in lateral view; B. habitus in ventral view; C. head and mouthparts: antenna (an), clypeus (cl), labrum (lr), maxilla (mx), labium (lb), maxillary palp (pm) and labial palp (pl); D. anchor-shaped body hairs on dorsal thoracic somite; E. lateral body surface, showing the spiracles (black arrowheads) on the thoracic (T2–T3) and abdominal (A1) segments. Scale bars: 100 μm (A, B); 25 μm (C, D, E).
Fig. 3 in Revision and redefinition of the crematogastrine ant genus Tetheamyrma BOLTON, 1991, with the description of a new species and the first description of the dealate queen (Hymenoptera: Formicidae)
Fig. 3: Tetheamyrma bidentata sp.n. Paratype dealate queen. (a) Full-face view; (b) lateral view; (c) dorsal view; (d) labels. Images courtesy of M. Pierce and J.T. Longino.
Fig. 1 in Revision and redefinition of the crematogastrine ant genus Tetheamyrma BOLTON, 1991, with the description of a new species and the first description of the dealate queen (Hymenoptera: Formicidae)
Fig. 1: Portion of phylogenetic tree indicating congeneric relationship of Tetheamyrma subspongia BOLTON, 1991 and "Tetheamyrma_ sp_EX1093" from Mt. Banahaw, Laguna Province, LuZon Island, Philippines (BRANSTETTER & al. 2017, supplementary Fig. S2).
Fig. 4 in Revision and redefinition of the crematogastrine ant genus Tetheamyrma BOLTON, 1991, with the description of a new species and the first description of the dealate queen (Hymenoptera: Formicidae)
Fig. 4: Tetheamyrma subspongia BOLTON, 1991. Holotype worker. (a) Full-face view; (b) lateral view; (c) dorsal view; (d) labels. Images courtesy of AntWeb (unidentified image creator).
Fig. 2 in Revision and redefinition of the crematogastrine ant genus Tetheamyrma BOLTON, 1991, with the description of a new species and the first description of the dealate queen (Hymenoptera: Formicidae)
Fig. 2: Tetheamyrma bidentata sp.n. Paratype worker. (a) Full-face view; (b) lateral view; (c) dorsal view; (d) labels. Images courtesy of M. Pierce and J.T. Longino.
Fig. 2 in Biogeography, cryptic diversity, and queen dimorphism evolution of the Neotropical ant genus Ectatomma Smith, 1958 (Formicidae, Ectatomminae)
Fig. 2 Ultrametric tree of Ectatomma ants obtained from BEAST Bayesian relaxed molecular clock analysis of two mitochondrial genes and one nuclear gene. Ninety-five per cent highest posterior density divergence time estimates are presented as bars. Numbers on the scale at the foot of the figure represent millions of years. Corresponding geological epochs and their subdivisions are represented with differential
Fig. 3 in Biogeography, cryptic diversity, and queen dimorphism evolution of the Neotropical ant genus Ectatomma Smith, 1958 (Formicidae, Ectatomminae)
Fig. 3 Ancestral area reconstruction results from RASP Bayesian analyses of Ectatomma ants based on biogeographic regions of Morrone (2006). Pie chart colours correspond to the posterior probability frequencies for each node. Letters in parenthesis correspond
Fig. 1 in Biogeography, cryptic diversity, and queen dimorphism evolution of the Neotropical ant genus Ectatomma Smith, 1958 (Formicidae, Ectatomminae)
Fig. 1 Ectatomma ant species Bayesian phylogram obtained by Mr. Bayes analyses of two mitochondrial and one nuclear gene sequences. Node support is shown by two numbers, the first one corresponding to Bayesian posterior probabilities and the second one to bootstrap support
Relatedness modulates reproductive competition among queens in ant societies with multiple queens
<p>Reproductive sharing in animal groups with multiple breeders, insects and vertebrates alike, contains elements of both conflict and cooperation, and depends on both relatedness between co-breeders, as well as their internal and external conditions. We studied how queens of the ant Formica fusca adjust their reproductive efforts in response to experimental manipulations of the kin competition regime in their nest, as well as their own reproductive status. Queens respond to the presence of competitors by increasing their egg laying efforts, but only if the competitors are highly fecund and distantly related. Furthermore, queens only engage in cannibalism of eggs when the risk of erroneously destroying own offspring is absent. We demonstrate that queens of Formica fusca fine-tune their behaviours in response to kinship and fecundity of others as well as their own physiological state in a manner that is unusually precise for any cooperative breeder.</p>
Data from: Genetic divergence between the sympatric queen morphs of the ant Myrmica rubra
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Survival of workers and queens of the ant Temnothorax nylanderi depending on infection with the cestode Anomotaenia brevis
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Data from: Costs and constraints conspire to produce honest signalling: insights from an ant queen pheromone
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Data from: Queen-worker ratio affects reproductive skew in a socially polymorphic ant
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Data from: Facultative use of thelytokous parthenogenesis for queen production in the polyandrous ant Cataglyphis cursor
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Data from: Bidirectional shifts in colony queen number in a socially polymorphic ant population
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Data from: The evolution of queen pheromones in the ant genus Lasius
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Data from: Variation in patriline reproductive success during queen production in orphaned colonies of the thelytokous ant Cataglyphis cursor
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Data from: Asymmetric dispersal and colonization success of Amazonian plant-ants queens
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Data from: Sex allocation conflict between queens and workers in Formica pratensis wood ants predicts seasonal sex ratio variation
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International Brain Laboratory public data
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