Olfaction in the female sheep botfly

Poddighe, Simone; Dekker, Teun; Scala, Antonio; Angioy, A. M.

doi:10.1007/s00114-010-0700-0

Cited by 23 publications

(20 citation statements)

References 43 publications

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“…Specifically, fibers converge in the antennal nerve and enter the AL to form the synaptic connections with the second-order sensory neurons, which is consistent with the anatomical arrangement of olfactory pathways in other dipteran species (Stocker 1994;Poddighe et al 2010). Interestingly, although NB was applied only unilaterally, both ipsilateral and contralateral ALs were symmetrically stained.…”

Section: Neural Projections From the Antennal Nervesupporting

confidence: 81%

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Morphological characterization of the antennal lobes in the Mediterranean fruit fly Ceratitis capitata

et al. 2015

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The medfly Ceratitis capitata is one of the most important pests for horticulture worldwide. The knowledge about anatomy and function of the medfly olfactory system is still limited. The first brain structure to process olfactory information in insects is the antennal lobe (AL), which is composed of its functional and morphological units, the olfactory glomeruli. Here, we present a morphological three-dimensional reconstruction of AL glomeruli in adult brains. We used unilateral antennal backfills of olfactory receptor neurons (ORNs) with neural tracers, revealing the AL structure. We recorded confocal stacks acquired from whole-mount specimens, and analyzed them with the software AMIRA. The ALs in C. capitata are organized in glomeruli which are more tightly packed in the anterior part than the posterior one. Axons of ORNs bilaterally connect the ALs through a commissure between the two ALs. This commissure is formed by several distinct fascicles. Contralateral dye transfer suggests the presence of gap junctions connecting ORNs from both antennae. There was no statistical difference between the average volumes of female ALs (204,166 ± 12,554 μm(3)) and of male ALs (190,287 ± 11,823 μm(3)). In most specimens, we counted 53 glomeruli in each AL, seven of which were sexually dimorphic in size

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Section: Neural Projections From the Antennal Nervesupporting

confidence: 81%

“…So far, 3D reconstructions of the ALs have been made in several insects, among which other Diptera (e.g. Laissue et al 1999;Ignell et al 2005;Ghaninia et al 2007;Poddighe et al 2010;Grabe et al 2015), but also Hymenoptera (e.g. Galizia et al 1999;Smid et al 2003), Lepidoptera (e.g.…”

Section: The Number Of Glomeruli In the Antennal Lobementioning

confidence: 99%

Morphological characterization of the antennal lobes in the Mediterranean fruit fly Ceratitis capitata

et al. 2015

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“…Meanwhile, the branched antennal sensilla, Ba II, are detected in these sensory pits, which show a resemblance among some other dipterans, such as branched trichoid sensilla in Portschinskia magnifica (Zhang et al 2012b) and Delia radicum (Ross and Anderson 1987), and mosquito larvae from later developmental stages (McIver and Beech 1986;Green and Hartenstein 1997). Based on previous studies, sensory pits could support a more efficient way to capture odor molecules in vicinity, and branched sensilla enlarge the surface area of antennal sensilla (Ross 1992;Hunter and Adserballe 1996;Bruyne et al 2001;Sukontason et al 2004;Poddighe et al 2010;Zhang et al 2012aZhang et al , b, 2013a; thus, the capacity of odor detection is highly facilitated in combination of these two features. Considering R. purpureus are known to aggregate and mate at specified landmarks on mountain tops (Ullrich 1939;Grunin 1959;Catts 1964;Papavero 1977;Hall 1995;Colwell et al 2006), large number of sensory pits and branched antennal sensilla might contribute significantly to finding the vital station (Ross 1992;Hunter and Adserballe 1996;Bruyne et al 2001;Sukontason et al 2004;Poddighe et al 2010;Zhang et al 2012aZhang et al , b, 2013a.…”

Section: Discussionmentioning

confidence: 95%

“…An unusual aspect of R. purpureus antenna is the decreasing number of surface sensilla but numerous sensory pits and (Hunter and Adserballe 1996), Oestrus ovis (Oestrinae) (Poddighe et al 2010), and Gasterophilus nigricornis (Gasterophilinae) (Zhang et al 2012a). Meanwhile, the branched antennal sensilla, Ba II, are detected in these sensory pits, which show a resemblance among some other dipterans, such as branched trichoid sensilla in Portschinskia magnifica (Zhang et al 2012b) and Delia radicum (Ross and Anderson 1987), and mosquito larvae from later developmental stages (McIver and Beech 1986;Green and Hartenstein 1997).…”

Section: Discussionmentioning

confidence: 95%

“…Since the high specialization of R. purpureus larvae to equid hosts (Colwell et al 2006), more sensory pits on female antennae could provide a more sensitive olfactory system for host orientation (Hall 1995;Ross 1992;Hunter and Adserballe 1996;Bruyne et al 2001;Sukontason et al 2004;Poddighe et al 2010;Zhang et al 2012aZhang et al , b, 2013a. Trichoid sensilla, as one of the basic type of antennal sensilla in many other flies (Ross 1992;Shanbhag et al 1995;Hunter and Adserballe 1996;Shanbhag et al 2000;Sukontason et al 2004Sukontason et al , 2007Smallegange et al 2008;Liu et al 2013;Zhang et al 2013a, b), are undiscovered in R. purpureus.…”

Section: Discussionmentioning

confidence: 97%

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Ultrastructure of antennal sensory organs of horse nasal-myiasis fly, Rhinoestrus purpureus (Diptera: Oestridae)

Liu

et al. 2015

Parasitol Res

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Rhinoestrus purpureus (Brauer, 1858) (Diptera: Oestridae) is an economically important parasite that can cause severe nasal myiasis in equids or even attacking humans. The antennae of R. purpureus were examined using stereoscopic microscopy and scanning electron microscopy. The general morphology was provided detailedly, together with distribution, type, size, and ultrastructure of antennal sensilla. All the three antennal segments, antennal scape, pedicel, and funiculus, are interspersed by microtrichiae. Only mechanoreceptors are detected on antennal scape and pedicel. On antennal funiculus, three types of sensilla were observed, including basiconic sensilla, coeloconic sensilla and clavate sensilla. Two features are characterized of this host-specific bot fly: (1) numerous sensory pits with branched basiconic sensilla on antennal funiculus and (2) the absence of trichoid sensilla. The function of these distinctive traits are discussed in association with the life history. We suggest that more sensory pits with branched sensilla could increase the sensitivity of olfactory system for host orientation, while the capability of pheromone identification might be reduced due to the absence of trichoid sensilla. Besides, we support both thermo- and chemo-functions of coeloconic sensilla.

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Morphology and distribution of antennal sensilla in a parasitoid fly, Gymnosoma rotundatum (Diptera: Tachinidae)

Roh

Lee

Park

2020

Microscopy Res & Technique

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Morphology of antennal sensilla and their distribution were investigated in male and female adults of the parasitoid fly Gymnosoma rotundatum (Diptera: Tachinidae) using scanning electron microscopy (SEM). The overall length and shape were not different between males and females from each other. Three basic types of sensilla (sensilla basiconica, s. chaetica, and s. coeloconica) were identified from both sexes, but with variations in numbers and distribution along the antennae. The s. basiconica and s. chaetica could be divided further into subtypes; s. basiconica into three subtypes and s. chaetica into two subtypes. All the basiconica subtypes 1, 2, and 3 were multiporous, indicating that their primary function was olfactory. The sensilla basiconica was most abundant on the antennae of both sexes. The abundance of s. basiconica subtype 1 was different, but other subtypes 2 and 3 were similar between males and females. There was no pore on the cuticular surface of the s. chaetica and s. coeloconica, suggesting that they are likely to be a mechanosensory or a thermohygroreceptory function. The abundance of the two sensillum types was similar between males and females. The morphological information obtained in our study provides a basis for future investigations into the sensory physiological function, and associated behaviors, of each type of sensilla in this parasitoid fly. K E Y W O R D Santennae, morphology, scanning electron microscopy, sensilla

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Olfaction in the female sheep botfly

Cited by 23 publications

References 43 publications

Morphological characterization of the antennal lobes in the Mediterranean fruit fly Ceratitis capitata

Morphological characterization of the antennal lobes in the Mediterranean fruit fly Ceratitis capitata

Ultrastructure of antennal sensory organs of horse nasal-myiasis fly, Rhinoestrus purpureus (Diptera: Oestridae)

Morphology and distribution of antennal sensilla in a parasitoid fly, Gymnosoma rotundatum (Diptera: Tachinidae)

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