Temporal and structural neural asymmetries in insects

Knebel, Daniel; Rigosi, Elisa

doi:10.1016/j.cois.2021.10.002

Cited by 14 publications

(6 citation statements)

References 49 publications

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“…Nevertheless, as lateralization in approaching and mounting is more recurrent among sexually experienced adult beetles, learning might be involved in the displayed behavior and the higher mating success. Furthermore, the predominance of male approaches from the females' left-side suggests that in these beetles, specialized neural circuits would probably act in opposing directions leading to lateralized sensory-motor displays and improvements in short-distance sex recognition as shown in other insects [12,15,16]. Moreover, the different ways experienced adults approach might be due to changes in anatomy during the adult phase in A. diaperinus [29], as reported in other insects [30,31].…”

Section: Discussionmentioning

confidence: 84%

“…Alphitobius diaperinus exhibits lateralized or non-lateralized movements when approaching and mounting, which, together with sex and sexual experience, affects copulation success. According to previous research, the lateralized movements during the mating behavior of insects may be related to their anatomical asymmetries, gland localization, increased production of olfactory and tactile signals, as well as to the higher presence of sensory structures on the left-or right-side, head or antennae [15,16,[24][25][26]. Some morphological asymmetries have been described for A. diaperinus in thorax-related structures [27]; however, the abdomen of A. diaperinus seems to be rather symmetrical as females and males have a secretion reservoir on the ventral apex of their abdomen [28].…”

Section: Discussionmentioning

confidence: 95%

“…Premating and mating behaviors in insects are influenced by a range of factors (e.g., age, sex, sexual experience [6,8,14]), which impact the mating success. In this context, lateralized behavior during the approaching and mounting of the mating pair may confer advantages in increasing the efficiency, accuracy, or speed in mating, while non-lateralized behavior may allow for quicker and more flexible responses to changing environmental conditions [1,15]. For instance, in some beetle pest species such as Cryptolestes ferrugineus, Tribolium castaneum, T. confusum and Trogoderma granarium, males with left-biased approaches had a higher mating success than ones with right-biased approaches or non-lateralized behavior [8][9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

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Lateralized Movements during the Mating Behavior, Which Are Associated with Sex and Sexual Experience, Increase the Mating Success in Alphitobius diaperinus (Coleoptera: Tenebrionidae)

Calla-Quispe,

Irigoin,

Mansurova

et al. 2023

Insects

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In the present study, we explored the effects of displacement directionality in mating behavior (i.e., lateralized and non-lateralized movements) on mating success (i.e., copulation occurs) and efficiency (i.e., time length at which copulation is achieved), and its association with sex and sexual experience in A. diaperinus. To do so, we carried out mating experiments and recorded the behavior of the mating pair during the whole mating sequence (i.e., precopulatory and copulatory phases). During the precopulatory phase, independently of sex and sexual experience, all beetles performed non-lateralized (i.e., backside or frontside) approaches; however, only sexually experienced beetles showed lateralized approaches (i.e., right-side and left-side). Notably, experienced males exhibited greater mating success than virgin males. After the approach, both virgin and experienced males displayed lateralized and non-lateralized mounts on the females with distinct mating success. Regardless of their sexual experience, 100% of successful mating attempts were achieved when males mounted from the females’ right side. Furthermore, the development of lateralized approaches and mounts reduces the time of mating sequence span compared with non-lateralized behaviors. We highlight the importance of lateralization in mating behavior and sexual experience to achieve higher mating success, addressing a potential learning ability of beetles based on experience.

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Section: Discussionmentioning

confidence: 84%

Section: Discussionmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

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Lateralized Movements during the Mating Behavior, Which Are Associated with Sex and Sexual Experience, Increase the Mating Success in Alphitobius diaperinus (Coleoptera: Tenebrionidae)

Calla-Quispe,

Irigoin,

Mansurova

et al. 2023

Insects

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“…The human brain shows a considerable number of functional left-right differences, such as the leftward bias for speech processing or the rightward bias for face processing 1 – 3 . Similarly, a wide range of non-human vertebrate and non-vertebrate species show such functional asymmetries across a wide range of cognitive systems 4 – 6 .…”

Section: Introductionmentioning

confidence: 99%

Hemispheric asymmetries and brain size in mammals

et al. 2023

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Hemispheric asymmetries differ considerably across species, but the neurophysiological base of this variation is unclear. It has been suggested that hemispheric asymmetries evolved to bypass interhemispheric conduction delay when performing time-critical tasks. This implies that large brains should be more asymmetric. We performed preregistered cross-species meta-regressions with brain mass and neuron number as predictors for limb preferences, a behavioral marker of hemispheric asymmetries, in mammals. Brain mass and neuron number showed positive associations with rightward limb preferences but negative associations with leftward limb preferences. No significant associations were found for ambilaterality. These results are only partly in line with the idea that conduction delay is the critical factor that drives the evolution of hemispheric asymmetries. They suggest that larger-brained species tend to shift towards more right-lateralized individuals. Therefore, the need for coordination of lateralized responses in social species needs to be considered in the context of the evolution of hemispheric asymmetries.

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“…However, invertebrates, especially insects [ 11 , 12 , 13 , 14 ], have been relatively little studied. Further research is needed in insects to identify the connection between the mechanisms of neural asymmetries and behavioral traits [ 15 ]. Although lateralization has been examined extensively in bees [ 16 , 17 , 18 , 19 , 20 , 21 , 22 ], there is a growing tendency to investigate laterality traits in other groups of insects.…”

Section: Introductionmentioning

confidence: 99%

Functional Asymmetries Routing the Mating Behavior of the Rusty Grain Beetle, Cryptolestes ferrugineus (Stephens) (Coleoptera: Laemophloeidae)

Boukouvala

Kavallieratos

Canale

et al. 2022

Insects

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The rusty grain beetle, Cryptolestes ferrugineus (Stephens) (Coleoptera: Laemophloeidae), is a serious secondary pest of stored and processed food commodities. In the present study, we investigated the lateralization of males during courtship and mating, attempting to understand if it can be linked with a high likelihood of successful copulation. Most males exhibited left-biased (41%) approaches towards females, and turned 180° to their left, with 37% mating success. Right-biased males (i.e., approaching from the right and then turning 180°) were fewer than left-biased ones; 26% out of 34% managed to copulate with females. Only 9% out of 13% and 7% out of 11% of the back side- and front side-approaching males succeeded in mating, respectively. Directional asymmetries in approaching a potential mate, as well as the laterality of side-biased turning 180°, significantly affected male copulation success, with left-biased males achieving higher mating success if compared to right-biased males. Copula duration was significantly lower for left-biased-approaching males (1668.0 s) over the others (i.e., 1808.1, 1767.9 and 1746.9 for right-biased, front and back side-males, respectively). Left-biased males performed shorter copulation attempts and copula compared to right-biased males. Overall, our study adds basic knowledge to the lateralized behavioral displays during courtship and copula of C. ferrugineus.

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Temporal and structural neural asymmetries in insects

Cited by 14 publications

References 49 publications

Lateralized Movements during the Mating Behavior, Which Are Associated with Sex and Sexual Experience, Increase the Mating Success in Alphitobius diaperinus (Coleoptera: Tenebrionidae)

Lateralized Movements during the Mating Behavior, Which Are Associated with Sex and Sexual Experience, Increase the Mating Success in Alphitobius diaperinus (Coleoptera: Tenebrionidae)

Hemispheric asymmetries and brain size in mammals

Functional Asymmetries Routing the Mating Behavior of the Rusty Grain Beetle, Cryptolestes ferrugineus (Stephens) (Coleoptera: Laemophloeidae)

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