Dung beetles (Coleoptera, Scarabaeinae) from high-altitude&amp;nbsp;grasslands in S&amp;atilde;o Joaquim National Park, Santa Catarina, southern&amp;nbsp;Brazil

Silva, Pedro Giovâni da

doi:10.15560/13.6.817

Cited by 6 publications

(5 citation statements)

References 52 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…acuticornis , occurring only in secondary and primary forests. All other species are matrix‐tolerant species, but several of them are also related to natural open ecosystems, such as high elevation grasslands and the Pampas biome, as found by da Silva (). This author highlights that ~90% of the species found in high elevation grasslands in the São Joaquim National Park is shared with the Pampas.…”

Section: Discussionmentioning

confidence: 71%

See 1 more Smart Citation

The role of habitat and daily activity patterns in explaining the diversity of mountain Neotropical dung beetle assemblages

2018

Self Cite

View full text Add to dashboard Cite

The interaction between land use and climate change is expected to strongly affect species distributions along high elevation landscapes. We aimed to test the effect of climatic variables on community metrics among five types of land use in a high elevation landscape. We described dung beetle spatial and temporal taxonomic and functional diversity patterns, and partitioned b-diversity into turnover and nestedness components. The interaction between land use and daily period of activity mostly drives abundance, functional richness and functional diversity, but not dung beetle species richness. Unlike Neotropical lowlands, species richness and abundance in open environments are similar to those existing in forests. Temperature is an important predictor of abundance and functional divergence. There is a higher spatial component of the taxonomic b-diversity, which is highly driven by species turnover. The temporal component of the taxonomic b-diversity was strongly driven by nestedness, where night assemblages are sub-sets, although not entirely, of diurnal assemblages. For functional diversity, the temporal b-diversity was much higher than the spatial b-diversity, but both were similarly represented by functional group turnover and nestedness. The composition of nocturnal and diurnal assemblages is clearly different, even more than the differences observed between habitats. However, taxonomic turnover is the dominant force between sampling sites while nestedness dominates the daily pattern. This means that forest habitats are unlikely to act as shelters for grassland species under a scenario of rising temperature.

show abstract

Section: Discussionmentioning

confidence: 71%

“…(Vaz‐de‐Mello et al . ; da Silva ). Therefore, the expected richness in open environments in this mountainous landscape may be quite higher than in closed forests.…”

Section: Discussionmentioning

confidence: 99%

The role of habitat and daily activity patterns in explaining the diversity of mountain Neotropical dung beetle assemblages

2018

Self Cite

View full text Add to dashboard Cite

show abstract

“…In regard to feeding habits, both C. rutilans cyanescens [23,24,25] and C. rutilans rutilans [26,27,28,29,30] have a preferentially coprophagous diet. However, revisions in the literature suggest that both subspecies do not seem to inhabit together, in the same locality: Canthon rutilans cyanescens is found in rainforest habitats with high temperatures located at elevations under 1000 m [23,31,32,33,34,35,36,37,38,39], while Canthon rutilans rutilans tends to be collected in grasslands or eucalyptus plantations in cold locations or in forests situated at more than 1000 m in elevation [26,27,28,29,40,41]. This divergence may be a result of a physiological adaptation to temperature for biogeographic reasons, which may have led to speciation.…”

Section: Introductionmentioning

confidence: 99%

Distribution of Canthon rutilans rutilans and Canthon rutilans cyanescens Along Spatio-Temporal and Temperature Gradients

Hensen

Hernández

Silva

et al. 2018

Insects

View full text Add to dashboard Cite

Subspecies is a debated taxonomic rank that, in some cases, could indicate that a speciation process is taking place. Studying the degree of co-occurrence among subspecies along environmental gradients may help to determine its taxonomic status. In this study, we explore the distribution of two subspecies of Canthon rutilans along spatio-temporal and temperature gradients in the Atlantic Forest of southern Brazil in order to reinforce their current subspecies status or to support their consideration as two different species. A yearly survey conducted along an elevational transect (from 250 m to 1630 m) shows that there is no spatio-temporal overlap between the two taxa. We collected 899 individuals of Canthon rutilans cyanescens and 29 individuals of Canthon rutilans rutilans. C. rutilans cyanescens can be found at 250 m (all year except in June), 430 m (August to April), and 840 m (September to April) in elevation, and when the air temperature oscillates from 15.3 °C to 24.0 °C. C. rutilans rutilans can be found at 1360 m (October to February), 1630 m (January) in elevation, and when the air temperature oscillates from 14.4 °C to 18.6 °C. Furthermore, local temperature data taken during the survey indicates that both subspecies also have a limited overlap in their thermal response curves. All these results suggest that these two taxa could be considered as two different species with dissimilar physiological and ecological requirements probably as a consequence of temperature-mediated divergent adaptation. Further molecular data can confirm or reject this supposition in the near future.

show abstract

“…2008, 2009, 2012, 2019; Audino et al . 2011; da Silva 2017), probably as a consequence of the shared biogeographic origin of these two habitats in southern Brazil, which have expanded and contracted their ranges during the Pleistocene glacial/interglacial periods (Leite et al . 2016).…”

Section: Discussionmentioning

confidence: 99%

“…2008, 2009, 2012; Hernández & Vaz‐de‐Mello 2009; Audino et al . 2011; da Silva 2017; Hensen et al . 2018).…”

Section: Introductionmentioning

confidence: 99%

Predicted distributions could suggest regional sympatry in spite of local allopatry: The case of the dung beetle Canthon rutilans Castelnau, 1840 (Coleoptera: Scarabaeidae)

Hensen

Hernández

Lobo

2021

Entomological Science

View full text Add to dashboard Cite

Studying the environmental characteristics of the localities in which different taxa have been observed could help to estimate probable niche differences. Previous studies on local distribution and reproductive behavior of the two subspecies of Canthon rutilans support their allopatry. Here we estimated the geographical distribution of these taxa to examine the congruency between the environmental characteristics of the occurrence localities derived from geographical and local data, in order to facilitate the future study of the causal factors that are more likely to explain their segregation. To do so, a database including most of the available distributional information about these subspecies was compiled. The data derived from 23 environmental variables in the occurrence cells were used to estimate those variables with different mean values among the two subspecies, and also to generate distributional maps reflecting the probable distribution of the two subspecies. Ten variables have statistically significant different values among both subspecies. Canthon rutilans rutilans would be present in colder places, living in the high elevation localities of the Atlantic Forest or Pampas biomes, whereas C. rutilans cyanescens seems to be restricted to lowland forested areas. Probable distribution maps show geographical sympatry in almost half of the distribution range of C. r. rutilans. As former results suggest that they are in allopatry at a local scale, these results propose that fine‐grain environmental factors would be promoting the segregation of taxa, but also that coarse‐grain data should be used with caution when the aim is to estimate niche differences.

show abstract

Dung beetles (Coleoptera, Scarabaeinae) from high-altitude grasslands in São Joaquim National Park, Santa Catarina, southern Brazil

Cited by 6 publications

References 52 publications

The role of habitat and daily activity patterns in explaining the diversity of mountain Neotropical dung beetle assemblages

The role of habitat and daily activity patterns in explaining the diversity of mountain Neotropical dung beetle assemblages

Distribution of Canthon rutilans rutilans and Canthon rutilans cyanescens Along Spatio-Temporal and Temperature Gradients

Predicted distributions could suggest regional sympatry in spite of local allopatry: The case of the dung beetle Canthon rutilans Castelnau, 1840 (Coleoptera: Scarabaeidae)

Contact Info

Product

Resources

About