Ocorrência de Scapholeberis armata freyi Dumont &amp; Pensaert (Crustácea, Anomopoda, Daphniidae) no estado de São Paulo, Brasil

Elmoor-Loureiro, Lourdes M. A.

doi:10.1590/s0101-81752000000100026

Cited by 10 publications

(11 citation statements)

References 1 publication

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“…Scapholeberis freyi is distributed from Florida to the south coast of the Gulf of Mexico in the neotropics. In South America, this species has been reported in Brazil ( Elmoor-Loureiro, 2000 ) and Paraguay ( Dumont & Pensaert, 1983 and references therein). De Abreu (2016) compared a sequence ( ) from Minas Gerais (Brazil) with all available sequences in BOLD and GenBank, and she found sharp divergences with all of them.…”

Section: Discussionmentioning

confidence: 94%

“…Currently, while we were preparing a baseline for several lakes and rivers from the Colombian Amazon Basin, we found an intriguing Scapholeberis with some resemblance to Scapholeberis freyi ( Dumont & Pensaert, 1983 ). In the checklists and data published from South America there are five members of this genus ( De los Rios-Escalante & Kotov, 2015 ; Kotov & Fuentes-Reines, 2015 ), one of them identified as Scapholeberis armata freyi in Brazil ( De Abreu, 2016 ; Elmoor-Loureiro, 2000 ), and represented by the sequence in GenBank.…”

Section: Introductionmentioning

confidence: 99%

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A new species of Scapholeberis Schoedler, 1858 (Anomopoda: Daphniidae: Scapholeberinae) from the Colombian Amazon basin highlighted by DNA barcodes and morphology

Andrade-Sossa

Buitron-Caicedo

Elías‐Gutiérrez

2020

PeerJ

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Background The Amazon basin is recognized as one of the most complex and species-rich freshwater environments globally. The diversity of zooplankton here remains unknown, with many species undescribed. Methods Here, we describe a new species of Scapholeberis Schoedler, 1858 (Cladocera: Anomopoda: Daphniidae: Scapholeberinae) from the Colombian Amazon Basin, collected with recently designed light traps. The description is based on detailed morphology (based on SEM and light microscopy) of parthenogenetic females, ephippial females, males, and molecular data based on the COI gene. Results Scapholeberis yahuarcaquensis n. sp. has a combination of characters present in Scapholeberis kingi Sars, 1888 and Scapholeberis armata freyi Dumont & Pensaert, 1983. These are a trilobate rostrum, with the middle lobe well developed with sides straight to relatively rounded, the presence of an elongated slit frontal head pore, a dorsal pore in the juncture of the cephalic shield and the valves, and a single denticulate membrane at the posterior rim of the valves, with stronger setae in the last third. The unique characters of the parthenogenetic females are ventral sucker with delicate triangles. Each has a filament-like projection in the lamellae’s inner side and an external section forming convex folds with denticle-like projections in the middle zone of the sucker-plate. There is a peculiar pitted sculpture in the ephippial females and a strong projection in the front of it. The male hook on the limb I with a blunt tip, a quirky lamella-like outgrow in the proximal side, and a paddle with well-developed spines scattered on its surface. The ventral sucker-lamellae in the male is much more developed than the female. The COI gene sequences showed an interspecific mean genetic divergence of 16.4% between S. yahuarcaquensis n. sp. and the closest species S. freyi from Mexico, supporting our results. A coalescence analysis and Barcode Index Number also support the new species based on the DNA sequences. New methods of collecting and integrative biology will give important support to recognize the fauna from the Amazon Basin, one of the most important sources of fresh water in the world that remains unknown in many respects.

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Section: Discussionmentioning

confidence: 94%

Section: Introductionmentioning

confidence: 99%

A new species of Scapholeberis Schoedler, 1858 (Anomopoda: Daphniidae: Scapholeberinae) from the Colombian Amazon basin highlighted by DNA barcodes and morphology

Andrade-Sossa

Buitron-Caicedo

Elías‐Gutiérrez

2020

PeerJ

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“…The cladoceran richness was estimated on the basis of the stabilization of species increasing curve per sample, based on literature values (Paggi 1972, 1973a,b, 1975, 1976, 1979, 1983, 1995; Elmoor‐Loureiro 1997, 2000). The cladoceran density was evaluated via analysis of at least three subsamples.…”

Section: Methodsmentioning

confidence: 99%

Resting cladoceran eggs and their contribution to zooplankton diversity in a lagoon of the Upper Paraná River floodplain

Palazzo

Bonecker²,

Fernandes

2008

Lakes & Reservoirs

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Zooplankton produce resting eggs and diapause stages as strategies to promote their survival during periods of adverse environmental conditions, thereby ensuring the community diversity. The goal of this study is to investigate the contribution of these eggs, which were present in the sediment of an isolated lagoon in the Upper Paraná River floodplain, to cladoceran diversity. The species hatching from the resting eggs in the sediment do not occur in the plankton. Sediment samples were collected at six sampling sites in the Osmar Zooplankton were sampled in the pelagic region, using a motorized pump (1000 L) and plankton net (68 μm). The pH, water temperature (°C), electrical conductivity (μS cm -1 ) and dissolved oxygen concentration (mg L -1 ) also were measured. The resting eggs were counted in the laboratory, being maintained under constant temperature and photoperiod until their analyses. The resting eggs were examined daily until hatching. A higher abundance of these eggs was observed in July, during a period of lower temperature and electrical conductivity, and higher pH and dissolved oxygen concentrations. ANOVA results indicated significant differences in resting egg abundance among the sampling months. Ceriodaphnia reticulata, Macrothrix spinosa, Ilyocryptus spinifer, Ephemeroporus tridentatus and Diaphanosoma sp. hatched from the resting eggs, although they were not observed in the plankton samples. C. reticulata was observed for the first time in this floodplain, with these study results corroborating the hypothesis that resting cladoceran eggs do contribute to zooplankton diversity in the lagoon.

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“…We consider that detailed morphological analysis and the use of molecular tools, like DNA barcoding, will help to uncover the real identity of all these species, as the case presented here or Scapholeberis freyi is distributed from Florida to the south coast of the Gulf of Mexico in the neotropics. In South America, this species has been reported in Brazil (Elmoor-Loureiro 2000) and Paraguay (Dumont & Pensaert 1983 Manuscript to be reviewed one (Figure 8, Supplementary File 2), so we can conclude that these specimens were conspecific and the distribution of the S. yahuarcaquensis n.sp. extends beyond the Amazon basin.…”

Section: Scapholeberis Armata Freyimentioning

confidence: 81%

Peer Review #2 of "A new species of Scapholeberis Schoedler, 1858 (Anomopoda: Daphniidae: Scapholeberinae) from the Colombian Amazon basin highlighted by DNA barcodes and morphology (v0.1)"

2020

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Background: The Amazon basin is recognized as one of the most complex and species-rich freshwater environments globally. The diversity of zooplankton here remains unknown, with many species undescribed. Methods: Here, we describe a new species of Scapholeberis Schoedler, 1858 (Cladocera: Anomopoda: Daphniidae: Scapholeberinae) from the Colombian Amazon Basin, collected with recently designed light traps. The description is based on detailed morphology (based on SEM and light microscopy) of parthenogenetic females, ephippial females, males, and molecular data based on the COI gene. Results: Scapholeberis yahuarcaquensis n. sp. has a combination of characters present in Scapholeberis kingi Sars, 1888 and Scapholeberis armata freyi Dumont & Pensaert, 1983. These are a trilobate rostrum, with the middle lobe well developed with sides straight to relatively rounded, the presence of an elongated slit frontal head pore, a dorsal pore in the juncture of the cephalic shield and the valves, and a single denticulate membrane at the posterior rim of the valves, with stronger setae in the last third. The unique characters of the parthenogenetic females are ventral sucker with delicate triangles. Each has a filament-like projection in the lamellae's inner side and an external section forming convex folds with denticle-like projections in the middle zone of the sucker-plate. There is a peculiar pitted sculpture in the ephippial females and a strong projection in the front of it. The male hook on the limb I with a blunt tip, a quirky lamella-like outgrow in the proximal side, and a paddle with well-developed spines scattered on its surface. The ventral sucker-lamellae in the male is much more developed than the female. The COI gene sequences showed an interspecific mean genetic divergence of 16.4% between S. yahuarcaquensis n. sp. and the closest species S. freyi from Mexico, supporting our results. A coalescence analysis and Barcode Index Number also support the new species based on the DNA sequences. New methods of collecting and integrative biology will give important support to recognize the fauna from the Amazon Basin, one of the most important sources of fresh water in the world that remains unknown in many respects.

show abstract

Ocorrência de Scapholeberis armata freyi Dumont & Pensaert (Crustácea, Anomopoda, Daphniidae) no estado de São Paulo, Brasil

Cited by 10 publications

References 1 publication

A new species of Scapholeberis Schoedler, 1858 (Anomopoda: Daphniidae: Scapholeberinae) from the Colombian Amazon basin highlighted by DNA barcodes and morphology

A new species of Scapholeberis Schoedler, 1858 (Anomopoda: Daphniidae: Scapholeberinae) from the Colombian Amazon basin highlighted by DNA barcodes and morphology

Resting cladoceran eggs and their contribution to zooplankton diversity in a lagoon of the Upper Paraná River floodplain

Peer Review #2 of "A new species of Scapholeberis Schoedler, 1858 (Anomopoda: Daphniidae: Scapholeberinae) from the Colombian Amazon basin highlighted by DNA barcodes and morphology (v0.1)"

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