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1,070 results for “dung beetle”
Data from: Evidence of developmental niche construction in dung beetles: effects on growth, scaling and reproductive success
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Human perturbations reduce dung beetle diversity and dung removal ecosystem function
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Data from: Diet shifts by adult flightless dung beetles Circellium bacchus, revealed using DNA metabarcoding, reflect complex life histories
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Data from: Dung beetle-megafauna trophic networks in Singapore’s fragmented forests
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Data from: Effects of soil physical properties on dung beetle assemblages in pasture landscapes of the Brazilian Cerrado
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Unexpectedly diverse forest dung beetle communities in degraded rainforest landscapes in Madagascar
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Data from: Dung beetle activity had no positive effect on nutrient concentration or performance of established rainforest seedlings
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Low functional richness and high functional redundancy of Neotropical dung beetle assemblages in forest-replacing sugarcane plantations
<p>Dung beetles collected in forest interior areas, forest edge, small fragments, sugarcane plantations (matrix of primary forest) and sugarcane plantations (matrix of small fragments) of a Brazilian Atlantic forest landscape (Serra Grande, Alagoas).</p>
Fig. 25 in Systematics of the enigmatic South American Streblopus Van Lansberge, 1874 dung beetles and their transatlantic origin: a case study on the role of dispersal events in the biogeographical history of the Scarabaeinae (Coleoptera: Scarabaeidae)
Fig. 25. Internal sac of Streblopus punctatus (Balthasar, 1938). A‒B. General aspect before dissection. C. Raspule. D. Apical and subapical sclerites. E. Superior right peripheral sclerite. Arrow indicates a triangular area of a more sclerotized tegument that is probably homologous to a similar triangular area on the SRP of S. opatroides van Lansberge, 1874. Abbreviations: A = axial sclerite; Rp = raspule; SA = subaxial sclerite; SRP = superior right peripheral sclerite; T = temones.
Fig. 27. Female genitalia. A‒C. Spermatheca. A. Streblopus opatroides van Lansberge, 1874. B‒C. S in Systematics of the enigmatic South American Streblopus Van Lansberge, 1874 dung beetles and their transatlantic origin: a case study on the role of dispersal events in the biogeographical history of the Scarabaeinae (Coleoptera: Scarabaeidae)
Fig. 27. Female genitalia. A‒C. Spermatheca. A. Streblopus opatroides van Lansberge, 1874. B‒C. S. punctatus (Balthasar, 1938) (slightly different views). Observe that the spermatheca of the latter species is more slender and has a unique pair of apical hooks (red arrow). D. General view of the entire female genitalia of S. punctatus.
Fig. 21. Wings. A‒E. Elytra. A in Systematics of the enigmatic South American Streblopus Van Lansberge, 1874 dung beetles and their transatlantic origin: a case study on the role of dispersal events in the biogeographical history of the Scarabaeinae (Coleoptera: Scarabaeidae)
Fig. 21. Wings. A‒E. Elytra. A. Lateral view of elytra of Streblopus opatroides van Lansberge, 1874. Note the very wide pseudepiplera and narrow epipleura. B‒C. Pseudepipleural carina (indicated by red arrows). B. S. opatroides. C. S. punctatus (Balthasar, 1938). Observe that the pseudepipleural carina in B is completely interrupted by umbilicate punctures, whereas the pseudepipleural carina in C is almost completely smooth, with very tiny and isolated punctures. D‒E. Lateral view of apex of elytra. D. S. opatroides. E. S. punctatus. Note how the distal calluses (shown by blue arrows) of S. punctatus are much more strongly projecting than those of S. opatroides. F. Right hind wing of Streblopus opatroides. Red arrow shows the notch of the anal fold. Abbreviations: AA = anal anterior; AP = anal posterior; Cu = cubitus; J = jugal; MP = media posterior; MPa = accessory MP; r4 = cross-vein r4 (cross-vein connecting veins RA3+4 and RP2); RA = radius anterior; RP = radius posterior; ScA = subcosta anterior.
Fig. 20. Posterior legs. A‒D. Metatibiae. A‒B. Streblopus opatroides van Lansberge, 1874. A in Systematics of the enigmatic South American Streblopus Van Lansberge, 1874 dung beetles and their transatlantic origin: a case study on the role of dispersal events in the biogeographical history of the Scarabaeinae (Coleoptera: Scarabaeidae)
Fig. 20. Posterior legs. A‒D. Metatibiae. A‒B. Streblopus opatroides van Lansberge, 1874. A. ♂. B. ♀. C‒D. S. punctatus (Balthasar, 1938). C. ♂. D. ♀. Note the strong sexual dimorphism and the many differences between the species. E‒F. Metatarsi and apex of metatibia of S. opatroides. E. ♂. F. ♀. Observe how much shorter the male metatibial spur is in comparison to that of the female.
Fig. 23. Genital capsule. A‒D. Streblopus opatroides van Lansberge, 1874. A. Dorsal view. B‒C in Systematics of the enigmatic South American Streblopus Van Lansberge, 1874 dung beetles and their transatlantic origin: a case study on the role of dispersal events in the biogeographical history of the Scarabaeinae (Coleoptera: Scarabaeidae)
Fig. 23. Genital capsule. A‒D. Streblopus opatroides van Lansberge, 1874. A. Dorsal view. B‒C. Lateral view from slightly different angles (red arrow shows the ventral surface and its keel). D. Ventral view. E‒H. S. punctatus. (Balthasar, 1938). E. Dorsal view. F‒G. Lateral view from slightly different angles (red arrow indicates ventral surface). H. Ventral view. Observe the differences in the shape of the parameres, in particular how the apical hook is much more prominent in S. punctatus.
Fig. 22 in Systematics of the enigmatic South American Streblopus Van Lansberge, 1874 dung beetles and their transatlantic origin: a case study on the role of dispersal events in the biogeographical history of the Scarabaeinae (Coleoptera: Scarabaeidae)
Fig. 22. Abdomen of Streblopus opatroides van Lansberge, 1874. A‒B. Lateral view. A. ♂. B. ♀. Note that the female abdomen has a straighter surface than that of the male, which is concave (red arrow shows this concavity). C. Pygidium and prepygidium.
Fig. 28 in Systematics of the enigmatic South American Streblopus Van Lansberge, 1874 dung beetles and their transatlantic origin: a case study on the role of dispersal events in the biogeographical history of the Scarabaeinae (Coleoptera: Scarabaeidae)
Fig. 28. Current distribution of Streblopus van Lansberge, 1874 plotted on a Middle Miocene palaeomap (~ 15 million years ago). Presently, both species of Streblopus are largely isolated from one another by means of the South America Dry Diagonal that separates the humid forests of the Amazon Basin from the Atlantic Forest on the South American eastern coast. This disjunct distribution is probably a result of the fragmentation of an once much more widely-distributed genus, which crossed the Dry Diagonal from the Atlantic Forest to southwestern Amazonia through forest corridors connecting those two biomes during periods of warmer climate over the past 25 million years. When the climate cooled and the tropical forests retreated, the open and drier environments of the Dry Diagonal advanced, and the populations of Streblopus in the Atlantic Forest and in the Amazon became isolated. It is known that the Middle Miocene experienced the highest temperatures of the last 20 million years (Zachos et al. 2001), and perhaps it was during its ʻclimate optimumʼ about 15 million years ago that the Amazonian and the Atlantic Forest populations of Streblopus were connected for the last time. Palaeomap modified from Scotese (2016).
Fig. 26. Genital segment. A. Streblopus opatroides van Lansberge, 1874. B. S in Systematics of the enigmatic South American Streblopus Van Lansberge, 1874 dung beetles and their transatlantic origin: a case study on the role of dispersal events in the biogeographical history of the Scarabaeinae (Coleoptera: Scarabaeidae)
Fig. 26. Genital segment. A. Streblopus opatroides van Lansberge, 1874. B. S. punctatus (Balthasar, 1938). Note that the medial sclerotized plate is larger and more sclerotized in S. punctatus than in S. opatroides; other differences refer to their lateral arches (indicated by blue arrows), which are concave in S. opatroides and more or less straight in S. punctatus, and the posterior arms of the MSP (indicated by red arrows), which are well developed and separated by a deep ʻU-shapeʼ in S. punctatus and only slightly indicated in S. opatroides. Abbreviations: LSP = lateral sclerotized plate; MSP = medial sclerotized plate.
Fig. 18. Mesotibiae. A‒B. Streblopus opatroides van Lansberge, 1874. A in Systematics of the enigmatic South American Streblopus Van Lansberge, 1874 dung beetles and their transatlantic origin: a case study on the role of dispersal events in the biogeographical history of the Scarabaeinae (Coleoptera: Scarabaeidae)
Fig. 18. Mesotibiae. A‒B. Streblopus opatroides van Lansberge, 1874. A. ♂. B. ♀. C‒D. S. punctatus (Balthasar, 1938). C. ♂. D. ♀. Observe that females of S. opatroides differ from those of S. punctatus by having a deep emargination at the apical edge of the mesotibiae (red arrow shows emargination).
Fig. 24 in Systematics of the enigmatic South American Streblopus Van Lansberge, 1874 dung beetles and their transatlantic origin: a case study on the role of dispersal events in the biogeographical history of the Scarabaeinae (Coleoptera: Scarabaeidae)
Fig. 24. Internal sac of Streblopus opatroides van Lansberge, 1874. A‒C. Different views of the undissected internal sac and sclerites in resting position. D. Superior right peripheral sclerite. Arrow indicates a triangular area of a more sclerotized tegument that is probably homologous to a similar triangular area on the SRP of S. punctatus (Balthasar, 1938). E‒F. Apical and subapical sclerites. E. Resting position. F. Sclerites after separation. Abbreviations: A = axial sclerite; Rp = raspule; SA = subaxial sclerite; SRP = superior right peripheral sclerite; T = temones.
Fig. 17. Mesofemora. A‒B. Streblopus opatroides van Lansberge, 1874. A in Systematics of the enigmatic South American Streblopus Van Lansberge, 1874 dung beetles and their transatlantic origin: a case study on the role of dispersal events in the biogeographical history of the Scarabaeinae (Coleoptera: Scarabaeidae)
Fig. 17. Mesofemora. A‒B. Streblopus opatroides van Lansberge, 1874. A. ♂. B. ♀. Note the sexual dimorphism in the presence of a long row of setae on the posterior edge of the male mesofemur. C‒F. S. punctatus (Balthasar, 1938). C. ♂. D. ♀. E‒F. Detail of posterior region of metafemora. E. ♂. F. ♀. Note the strong alveolar microsculpture present near the posterior edge in males and the high concentration of umbilicate punctures in the same region in females.
Fig. 16. Protibiae. A‒B. Lateral view. A. Streblopus opatroides van Lansberge, 1874. B. S in Systematics of the enigmatic South American Streblopus Van Lansberge, 1874 dung beetles and their transatlantic origin: a case study on the role of dispersal events in the biogeographical history of the Scarabaeinae (Coleoptera: Scarabaeidae)
Fig. 16. Protibiae. A‒B. Lateral view. A. Streblopus opatroides van Lansberge, 1874. B. S. punctatus (Balthasar, 1938). Note the how the protibia of S. opatroides is much more curved than that of S. punctatus. C. Frontal view of the protibia of S. punctatus. Note the presence of a protibial spur.
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