Abstract
The external morphology of the compound eye of the winged female and male Solenopsis invicta Buren and its microstructure in light and dark adaptations were observed using scanning electron microscopy and optical microscopy. The results indicated that the compound eye located on the lateral side of its head, is the a shape of a half ellipsoid and composed of approximately 510 ommatidia in the female, and a near hemisphere with about 805 ommatidia in the male. The ommatidium was made of a corneal lens, crystalline cone, 8 to 9 retinula cells and basement membrane. The cornea was a colorless, transparent and double convex lens. The crystalline cone, with an inverted cone shape, was approximately 14.50m long, formed by four equal parts, and surrounded by many pigment granules. The rhabdom beneath the crystalline cone, was about 75.00m long, with a thicker middle part and thinner ends. More pigment granules were scattered in the distal and proximal ends and less in the middle, and the basement membrane was on the most bottom area of the ommatidium. The primary pigment cells moved horizontally along the crystalline cone from its distal to proximal end during dark adaptation or moved reversely during light adaptation. There was no significant difference between the pigment granule distribution and the structure of the crystalline cone between female and male ommatidium under the same light or dark adaptation. It is concluded that the fire ant compound eye is an apposition eye, whose light-tuning mechanism is accomplished by the change of crystalline cone and the movement of the pigment cells.
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References
Allen C R, Lutz R S, Demarais S (1995). Red imported fire ant impacts on Northern bobwhite populations. Ecol Appl, 5(3): 632–638
Banks A N, Srygley R B (2003). Orientation by magnetic field in leafcutter ants, Atta colombica (Hymenoptera: Formicidae). Ethology, 109(10): 835–846
Bernstein S, Finn C (1971). Ant compound eye: size-related ommatidium differences within a single wood ant nest. Experientia, 27(6): 708–710
Callcott A M (2002). Range expansion of the imported fire ant: 1918–2001(updated). En: 2002 Annual Imported Fire Ant Research Conference, Athens, Georgia
Fan F, Liu J, Qu P, Lv L H, Wei G Sh (2008). Compound eye morphology of the fire ants, Solenopsis invicta, invaded southern China observed with scanning electron microscopy. Chinese Bulletin of Entomology, 45(4): 642–646 (in Chinese)
Chen H T, Luo L ZH, Xiong H L (2010). The outing activity of worker ants and nuptial flight of alates in the red imported fire ant, Solenopsis invicta (Hymenoptera: Form icidae) in Guangzhou area, Southern China. Acta Entomologica Sinica, 53(4): 449–456 (in Chinese)
Harris R A, Hempel de Ibarra N, Graham P, Collett T S (2005). Ant navigation: Priming of visual route memories. Nature, 438(7066): 302
Feng H L, Zhang X D, Chang T R, Guo WC, Zhang R C, Xin Y (1992). Antennal sensilla and compound eye of ant observed with scanning electron microscopy. Entomological Knowledge, 29(5): 292–294
Klotz J H, Jetter K M, Greenberg L, Hamilton J, Kabashima J, Williams D F (2003). An insect pest of agricultural, urban and wildlife areas: The red imported fire ant. In: Daniel A Sumner, ed. Exotic Pests and Diseases: Biology and Economics for Biosecurity. Iowa City: Iowa State Press, 151–166
Labhart T (2000). Polarization-Sensitive interneurons in the optic lobe of the desert ant Cataglyphis bicolor. Naturwissenschaften, 87(3): 133–136
Meyer E P, Nassel D R (1986). Terminations of photoreceptor axons from different regions of the compound eye of the desert ant Cataglyphis bicolor. Proc R Soc Lond B Biol Sci, 228(1250): 59–69
Moser J C, Reeve J D, Bento J M S, Della Lucia T M C, Cameron R S, Heck N M (1999). Eye size and behaviour of day-and night-flying leafcutting ant alates. J Zool (Lond), 264(1): 69–75
Neese V (1966). Zur Bedeutung der Augenborsten bei der Fluggeschwindigkeitsregulation der Bienen. Z Vgl Physiol, 52(2): 149–154
Shoemaker D D, Ross K G (1996). Effects of social organization on gene flow in the fire ant Solenopsis invicta. Nature, 383(6601): 613–616
Trager J (1991). The fire ants of the Solenopsis geminata group. J NY Entomol Soc, 99(2): 141–198
Menzi U (1987). Visual adaptation in nocturnal and diurnal ants. Journal of Comparative Physiology A, 160(1): 11–21
Vinson S B (1997). Invasion of the red imported fire ant (Hymenoptera: Formicidae) Spread, Biology, and Impact. American Entomologist, 43(1): 23–39
Wojcik D P, Aller C R, Brenner R J, Forys E A, Jouvenaz D P, Lutz R S (2001). Red imported fire ants: Impact on biodiversity. American Entomologist., 47(1): 16–23
Gao Y, Luo L Zh (2005). Antennal morphology and sensiha of the fire ant, Solenopsis invica Buren invaded Southern China observed with scanning electron microscopy. Acta Entomologica Sinica, 48(6): 986–992 (in Chinese)
Xu Z M, Shen J X (2000). A study on direct homing and underlying orientation mechanism in the ant Tetramorium caespitum. Acta Entomologica Sinica, 143: 242–24 (in Chinese)
Xue D Y, Li H M, Han H X, Zhang R Z (2005). A prediction of potential distribution area of Solenopsis invicta in China. Entomological Knowledge, 42(1): 57–60 (in Chinese)
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Fan, F., Zhao, C., Ren, H. et al. External morphology and microstructure of the compound eye of fire ants, Solenopsis invicta Buren. Front. Agric. China 5, 570–575 (2011). https://doi.org/10.1007/s11703-011-1131-1
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DOI: https://doi.org/10.1007/s11703-011-1131-1