The evolution of the mouthpart structures in the Eucraniini (Coleoptera, Scarabaeidae)

Palestrini, Claudia; Barbero, Enrico; Roggero, Angela

doi:10.1007/s13127-020-00449-w

Cited by 9 publications

(9 citation statements)

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“…Epipharynx. The formation of epipharyngeal teeth has been observed in some dung beetle taxa, such as Pachysoma and certain species of the tribe Eucraniini [ Glyphoderus sterquilinus (Westwood), Anomiopsoides heteroclyta (Blanchard), Anomiopsoides biloba (Burmeister), and Anomiopsoides cavifrons (Burmeister)] (Halffter and Halffter 2009; Holter and Scholtz 2011; Ocampo 2005, 2010; Palestrini et al 2020). The function of these teeth is associated with the hashing of food before ingestion (Holter and Scholtz 2011).…”

Section: Discussionmentioning

confidence: 99%

“…This type of structure was reported for species adapted to a hard and dry diet. Thus, they had not been previously associated with Dichotomius because species belonging to this genus feed mainly on soft and fresh resources, such as mammal dung, and they exhibit a thick zygum with many large setae (Culot et al 2013; Giménez Gómez et al 2018b, 2020; Halffter and Matthews 1966; Nunes et al 2016; Palestrini et al 2020; Salomao et al 2017; Valois et al 2017). Although field data show that D. carbonarius adults are attracted to fresh mammal dung (Giménez Gómez et al 2018a), they feed on leaf litter under laboratory conditions, which they also use to build brood chambers in nests (Dinghi et al 2013).…”

Section: Discussionmentioning

confidence: 99%

“…, leaf litter, dry dung, and hard fruits) for feeding and nesting ( e.g. , species of the genera Anomiopsoides Blackwelder, Cephalodesmius Westwood, Dichotomius Hope, Glyphoderus Westwood, Canthidium Erichson [ Canthidium laetum Harold], Pachysoma MacLeay, and Thorectes Mulsant) (Dinghi et al 2013; Holter and Scholtz 2011; Kohlmann and Solís 2006; López-Guerrero 2009; Palestrini et al 2020; Sánchez-Piñero et al 2019; Tarasov and Génier 2015; Verdú and Galante 2004). Mouthpart structures associated with hard resources have been observed in some of these groups (Palestrini et al 2020; Tarasov and Génier 2015; Verdú and Galante 2004).…”

Section: Introductionmentioning

confidence: 99%

“…, species of the genera Anomiopsoides Blackwelder, Cephalodesmius Westwood, Dichotomius Hope, Glyphoderus Westwood, Canthidium Erichson [ Canthidium laetum Harold], Pachysoma MacLeay, and Thorectes Mulsant) (Dinghi et al 2013; Holter and Scholtz 2011; Kohlmann and Solís 2006; López-Guerrero 2009; Palestrini et al 2020; Sánchez-Piñero et al 2019; Tarasov and Génier 2015; Verdú and Galante 2004). Mouthpart structures associated with hard resources have been observed in some of these groups (Palestrini et al 2020; Tarasov and Génier 2015; Verdú and Galante 2004). However, although the study of mouthparts is extensive in Scarabaeinae (López-Guerrero and Zunino 2007), some genera with varied trophic preference (mammal dung, vertebrate carrion, leaf litter) have been poorly studied, such as the species of the genus Dichotomius .…”

Section: Introductionmentioning

confidence: 99%

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Possible Indicators of Feeding Habit Types: Analysis of the Mouthparts of Five Dichotomius Hope (Coleoptera: Scarabaeidae) Species from Argentina

Gómez

Tonelli

Verdú

et al. 2023

The Coleopterists Bulletin

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Dung beetles exhibit a wide range of trophic preferences, including soft and hard resources. The study of mouthparts associated with these resources is extensive, and mouthparts of these insects have generally been described as membranous, hairy, and poorly adapted to cutting hard food. In this study, we compare the mouthparts (epipharynx, labium, and hypopharynx) of five species of Dichotomius Hope from Argentina that show differences in their trophic preferences, to evaluate if these structures also differ according to their feeding habit. We found epipharyngeal teeth, hypopharyngeal teeth, and more sclerotized structures in species that consume hard resources [Dichotomius carbonarius (Mannerheim)] and the absence or reduction of these structures in species that consume soft resources [Dichotomius sericeus (Harold), Dichotomius nisus (Olivier), Dichotomius mormon (Ljungh), and Dichotomius depressicollis (Harold)]. On the other hand, the latter species have hairier and softer mouth structures associated with these soft resources. According to these results, a detailed study of the macrostructures of mouthparts could indicate a priori the resource state consumed by a dung beetle species: the presence or absence of teeth and sclerotized structures would be associated with hard or soft food as the main resource, respectively, despite the occasional use of other resources in the field.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Possible Indicators of Feeding Habit Types: Analysis of the Mouthparts of Five Dichotomius Hope (Coleoptera: Scarabaeidae) Species from Argentina

Gómez

Tonelli

Verdú

et al. 2023

The Coleopterists Bulletin

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“…We assessed the possible effect of phylogeny on our results by constructing a phylogenetic tree based on mitochondrial COI sequence (see Table S3 in Additional file 2 for the list of the accession numbers) and testing the relationship among traits. The COI sequence was chosen as a reliable proxy to define the relationships among coleopteran taxa, according to [ 72 ]. Both Maximum Parsimony (MP) and Maximum Likelihood (ML) approaches were used to evaluate the evolutionary history of the species (for the details of the molecular analysis, see Box S4 in Additional file 2 ).…”

Section: Methodsmentioning

confidence: 99%

Physiological, morphological and ecological traits drive desiccation resistance in north temperate dung beetles

Nervo¹,

Isaia²,

Chamberlain³

et al. 2021

BMC Zool

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Background Increasing temperatures and changes in precipitation patterns threaten the existence of many organisms. It is therefore informative to identify the functional traits that underlie differences in desiccation resistance to understand the response of different species to changes in water availability resulting from climate change. We used adult dung beetles as model species due to their importance to ecosystem services. We investigated: (i) the effect of physiological (water loss rate, water loss tolerance, body water content), morphological (body mass) and ecological (nesting behaviour) traits on desiccation resistance; (ii) the role of phylogenetic relatedness in the above associations; and, (iii) whether relatively large or small individuals within a species have similar desiccation resistance and whether these responses are consistent across species. Results Desiccation resistance decreased with increasing water loss rate and increased with increasing water loss tolerance (i.e. proportion of initial water content lost at the time of death). A lack of consistent correlation between these traits due to phylogenetic relatedness suggests that the relationship is not determined by a shared evolutionary history. The advantage of a large body size in favouring desiccation resistance depended on the nesting behaviour of the dung beetles. In rollers (one species), large body sizes increased desiccation resistance, while in tunnelers and dwellers, desiccation resistance seemed not to be dependent on body mass. The phylogenetic correlation between desiccation resistance and nesting strategies was significant. Within each species, large individuals showed greater resistance to desiccation, and these responses were consistent across species. Conclusions Resistance to desiccation was explained mainly by the dung beetles’ ability to reduce water loss rate (avoidance) and to tolerate water loss (tolerance). A reduction in water availability may impose a selection pressure on body size that varies based on nesting strategies, even though these responses may be phylogenetically constrained. Changes in water availability are more likely to affect dweller species, and hence the ecosystem services they provide.

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Mouthpart structure of the adult Bicaubittacus appendiculatus ( ) (Mecoptera: Bittacidae)

Wang

Hua

2022

Arthropod Structure & Development

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The evolution of the mouthpart structures in the Eucraniini (Coleoptera, Scarabaeidae)

Cited by 9 publications

References 49 publications

Possible Indicators of Feeding Habit Types: Analysis of the Mouthparts of Five Dichotomius Hope (Coleoptera: Scarabaeidae) Species from Argentina

Possible Indicators of Feeding Habit Types: Analysis of the Mouthparts of Five Dichotomius Hope (Coleoptera: Scarabaeidae) Species from Argentina

Physiological, morphological and ecological traits drive desiccation resistance in north temperate dung beetles

Mouthpart structure of the adult Bicaubittacus appendiculatus ( ) (Mecoptera: Bittacidae)

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