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Vujić, Vukica D.; Ilić, Bojan S.; Lučić, Luka R.; Jovanović, Zvezdana S.; Milovanović, Jelena Z.; Dudić, Boris D.; Stojanović, Dalibor Z.
Arthropod structure & development, November 2022, 2022-11-00, 20221101, Volume: 71Journal Article
The presence of morphological integration and modularity of the forcipular apparatus, despite its evolutionary significance, has not been analyzed in centipedes. This morphological structure has a crucial role in feeding and defense, thanks to its poisonous part (forcipules), which is important for catching the prey. The aims of our study were: i) to test the hypothesis of modularity of the forcipular apparatus in centipede Lithobius melanops; and ii) to investigate the influence of allometry on overall morphological integration in the aforementioned species using a geometric morphometric approach. The presence of fluctuating asymmetry was obtained by Procrustes ANOVA. Allometry was significant only for the symmetric component of the forcipular apparatus. The modularity hypothesis was not accepted, because the covariance coefficients for symmetric and asymmetric components were lower than 89.5% and 72.1% (respectively) of other RV coefficients obtained by a random contiguous partition of the forcipular apparatus. Results of the present study indicate that allometry does increase the level of morphological integration in the forcipular apparatus. According to our results, the forcipular coxosternite and forcipules could not be considered as separate modules; namely, they probably share similar developmental pathways and function in different forms of behavior and survival in L. melanops. •The first modularity hypotheses testing in Chilopoda using geometric morphometrics.•The forcipular apparatus does not consists of different modules.•Allometry increases the morphological integration in the forcipular apparatus.
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