Demonstration of a sexual dimorphism in the olfactory pathways of the drones ofApis mellifica L. (Hymenoptera, Apidae)

Arnold, Gérard; Masson, C.; Budharugsa, Sati

doi:10.1007/bf01949744

Cited by 15 publications

(5 citation statements)

References 12 publications

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“…Anatomical sexual dimorphism in the antennal lobes has been found in several species (Schachtner et al,2005). Usually in males, enlarged glomeruli at the entrance site of the antennal nerve are described, as shown for cockroaches (Jawlowski,1948; Neder,1959; Boeckh et al,1987), bees (Arnold et al,1984; Brockmann and Brückner,2001), ants (Kleineidam et al,2005; Nishikawa et al,2008), flies (Kondoh et al,2003), and of course moths (reviewed in Anton and Homberg,1999; Hansson and Anton,2000) including M. sexta (Camazine and Hildebrand,1979; Matsumoto and Hildebrand,1981; Schneiderman et al,1982). These glomeruli are usually cited as macroglomerulus or, if more than one, as macroglomeruli or “macroglomerular complex” (MGC).…”

Section: Discussionmentioning

confidence: 87%

Anisometric brain dimorphism revisited: Implementation of a volumetric 3D standard brain in Manduca sexta

Jundi

Huetteroth

Kurylas

et al. 2009

J of Comparative Neurology

153

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Lepidopterans like the giant sphinx moth Manduca sexta are known for their conspicuous sexual dimorphism in the olfactory system, which is especially pronounced in the antennae and in the antennal lobe, the primary integration center of odor information. Even minute scents of female pheromone are detected by male moths, facilitated by a huge array of pheromone receptors on their antennae. The associated neuropilar areas in the antennal lobe, the glomeruli, are enlarged in males and organized in the form of the so-called macroglomerular complex (MGC). In this study we searched for anatomical sexual dimorphism more downstream in the olfactory pathway and in other neuropil areas in the central brain. Based on freshly eclosed animals, we created a volumetric female and male standard brain and compared 30 separate neuropilar regions. Additionally, we labeled 10 female glomeruli that were homologous to previously quantitatively described male glomeruli including the MGC. In summary, the neuropil volumes reveal an isometric sexual dimorphism in M. sexta brains. This proportional size difference between male and female brain neuropils masks an anisometric or disproportional dimorphism, which is restricted to the sex-related glomeruli of the antennal lobes and neither mirrored in other normal glomeruli nor in higher brain centers like the calyces of the mushroom bodies. Both the female and male 3D standard brain are also used for interspecies comparisons, and may serve as future volumetric reference in pharmacological and behavioral experiments especially regarding development and adult plasticity. J. Comp. Neurol. 517:210-225, 2009. (c) 2009 Wiley-Liss, Inc.

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Section: Discussionmentioning

confidence: 87%

Anisometric brain dimorphism revisited: Implementation of a volumetric 3D standard brain in Manduca sexta

Jundi

Huetteroth

Kurylas

et al. 2009

J of Comparative Neurology

153

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“…Anatomical sexual dimorphism in brain structures has been described in a variety of insects primarily with respect to the ALs (for a review see Schachtner et al, 2005 ). Enlarged glomeruli at the entrance site of the antennal nerve are described for males, as example for cockroaches (Jawlowski, 1948 ; Neder, 1959 ; Boeckh et al, 1987 ), bees (Arnold et al, 1984 ; Brockmann and Brückner, 2001 ), ants (Kleineidam et al, 2005 ; Nishikawa et al, 2008 ), flies (Kondoh et al, 2003 ), and moths (reviewed in Anton and Homberg, 1999 ; Hansson and Anton, 2000 ). These glomeruli are usually called macroglomeruli or macroglomerular complex (MGC).…”

Section: Discussionmentioning

confidence: 99%

3D standard brain of the red flour beetle Tribolium castaneum: a tool to study metamorphic development and adult plasticity

Dreyer

Vitt

Dippel

et al. 2010

Front. Syst. Neurosci.

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The red flour beetle Tribolium castaneum is emerging as a further standard insect model beside Drosophila. Its genome is fully sequenced and it is susceptible for genetic manipulations including RNA-interference. We use this beetle to study adult brain development and plasticity primarily with respect to the olfactory system. In the current study, we provide 3D standard brain atlases of freshly eclosed adult female and male beetles (A0). The atlases include eight paired and three unpaired neuropils including antennal lobes (ALs), optic lobe neuropils, mushroom body calyces and pedunculi, and central complex. For each of the two standard brains, we averaged brain areas of 20 individual brains. Additionally, we characterized eight selected olfactory glomeruli from 10 A0 female and male beetles respectively, which we could unequivocally recognize from individual to individual owing to their size and typical position in the ALs. In summary, comparison of the averaged neuropil volumes revealed no sexual dimorphism in any of the reconstructed neuropils in A0 Tribolium brains. Both, the female and male 3D standard brain are also used for interspecies comparisons, and, importantly, will serve as future volumetric references after genetical manipulation especially regarding metamorphic development and adult plasticity.

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“…Previous anatomical studies of the antennal lobe of Hymenopteran species include the bees Apis mellifera (Suzuki 1975;Arnold et al 1984Arnold et al , 1985Arnold et al , 1988Flanagan and Mercer 1989;Galizia et al 1999), A. florea (Brockmann and Brückner 2001) and Bombus hypnorum (Fonta 1984); the ants Camponotus vagus (Masson and Strambi 1977), Formica pratensis (Goll 1967) and Mesoponera caffraria (Masson 1972); and the wasps Polistes gallicus (Masson and Strambi 1977), Acromyrmex octospinosus (Delabie 1984) and Vespa crabro (Hanström 1928). From these studies, it appears that the number of glomeruli Table 1 Fig .…”

Section: Discussionmentioning

confidence: 99%

Three-dimensional organization of the glomeruli in the antennal lobe of the parasitoid wasps Cotesia glomerata and C. rubecula

et al. 2003

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Demonstration of a sexual dimorphism in the olfactory pathways of the drones ofApis mellifica L. (Hymenoptera, Apidae)

Cited by 15 publications

References 12 publications

Anisometric brain dimorphism revisited: Implementation of a volumetric 3D standard brain in Manduca sexta

Anisometric brain dimorphism revisited: Implementation of a volumetric 3D standard brain in Manduca sexta

3D standard brain of the red flour beetle Tribolium castaneum: a tool to study metamorphic development and adult plasticity

Three-dimensional organization of the glomeruli in the antennal lobe of the parasitoid wasps Cotesia glomerata and C. rubecula

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