Antennal sensory structures of polymorphic soldiers in the termite macrotermes annandalei (Silvestri)

Das, Khirod Sankar; Choudhury, Sushabhan; Nonglait, Chanreila Kl

doi:10.5958/0974-8172.2020.00180.7

Cited by 1 publication

(11 citation statements)

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“…Similar distribution pattern of sensilla was also found on the antenna of soldier and worker castes of the termite species C. formosanus and M. annandalei (Das et al, 2020;Fu et al, 2020;Yanagawa et al, 2009).…”

Section: Characteristics and Putative Functions Of Sensillasupporting

confidence: 71%

“…Fu et al (2020) andDas et al (2020) which are similar in morphology with the stc II of this study. Thus we presume that st II and stc II found on the antenna of O. parvidens most probably function as olfactory and thermoreceptive sensilla.…”

supporting

confidence: 80%

“…Sensilla with the characteristics observed in sch I and II were considered as gustatory or contact chemosensory in nature (Altner & Prillinger, 1980). Previously, in the termite species C. formosanus and M. annandalei too, studies described the sch with terminal pore and reported them as gustatory sensilla (Das et al, 2020; Fu et al, 2020; Tarumingkeng et al, 1976; Yanagawa et al, 2009). Based on the external morphological features of sch I and II of our study, we presume that they might function as gustatory or contact chemosensilla on the antenna of soldiers and workers of O. parvidens .…”

Section: Discussionmentioning

confidence: 99%

“…St I and stc I of O. parvidens carry numerous wall pores on its side wall and have a protuberant non flexible base in both soldiers and workers and sensilla with these features have been described as olfactory sensilla in insects (Altner & Prillinger, 1980; Keil, 1999; Keil & Steinbrecht, 1984; Steinbrecht, 1999; Zacharuk, 1980). St found on the antenna of the termite C. formosanus and M. annandalei were reported to respond to pheromones and act as chemosensory sensilla (Das et al, 2020; Fu et al, 2020; Yanagawa et al, 2009). The numerous wall pores of st I and stc I may enable them to perceive pheromones released by other colony members and act as chemoreceptor on the antenna of O. parvidens too.…”

Section: Discussionmentioning

confidence: 99%

“…Due to their morphology and specific location on the antenna, BBs were considered as phase-tonic mechanoreceptors with the probable function of proprioception (Schneider, 1964). Bb were also reported in the termite species C. formasanus and M. annandalei described as proprioceptive mechanosensory sensilla (Das et al, 2020;Fu et al, 2020). Yanagawa et al (2009) also reported sensilla with similar characteristics like Bb on the antenna of C. formosanus and named as sensilla chaetica but proposed similar function like typical Bb.…”

Section: Characteristics and Putative Functions Of Sensillamentioning

confidence: 99%

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Sensory structures on the antenna of soldier and worker castes of the termite species Odontotermes parvidens (Termitidae: Isoptera: Blattaria)

Das

Marwein²,

Nonglait³

et al. 2021

Microscopy Res & Technique

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Odontotermes parvidens is a commonly found important pest species of termite that primarily feed on a range of cellulosic sources. In termites, communication among the nestmates is the basis of all their daily activities and the sensory structures present on the sensory appendages play a crucial role in different social behaviors perceiving and processing various signals of the nestmates and external environments. So, it is essential to understand in detail their sensory structures in order to understand the sensory system of the species O. parvidens. Thus, we have studied the antenna which is one of the primary sensory appendages of both soldier and worker individuals of the species to elucidate various antennal sensory structures and their distribution using scanning electron microscopy. Based on the morphological features of various sensilla, we observed seven types of sensilla as sensilla chaetica (subtypes I, II, III, and IV), sensilla trichodea (subtypes I and II), sensilla trichodea curvata (subtypes I and II), sensilla basiconica, sensilla capitula, Böhm bristles, and sensilla campaniformia (subtypes I and II) along with numerous glandular pores on the antenna of soldier and worker castes. We have also discussed the putative functions of all the sensilla observed based on their external morphology and distributional characteristics on the antenna of soldier and worker castes of the species O. parvidens. Furthermore, the abundance of sensillar types on the antenna of both the castes has also been discussed.

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Section: Characteristics and Putative Functions Of Sensillasupporting

confidence: 71%

supporting

confidence: 80%