The Experts below are selected from a list of 9603 Experts worldwide ranked by ideXlab platform
Joao Vasconcellosneto - One of the best experts on this subject based on the ideXlab platform.
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Niche Partitioning and coexistence of two spiders of the genus peucetia araneae oxyopidae inhabiting trichogoniopsis adenantha plants asterales asteraceae
PLOS ONE, 2019Co-Authors: German Antonio Villanuevabonilla, Suyen Safuannaide, Mathias M Pires, Joao VasconcellosnetoAbstract:Niche theory suggests that the coexistence of ecologically similar species in the same site requires some form of resource Partitioning that reduces or avoids interspecific competition. Here, from July 2013 to December 2015, we investigated spatial Niche differentiation at three different scales of two sympatric congeneric spiders, Peucetia rubrolineata and P. flava, along an altitudinal gradient in shaded and open areas in an Atlantic forest in Serra do Japi, SP, Brazil. These spiders are peculiar in that they present an exclusive association with the plant Trichogoniopsis adenantha (Asteraceae). In theory, the coexistence of two Peucetia species could be explained by: (1) microhabitat segregation with individuals from different species occupying different parts of the same plants; (2) mesohabitat segregation with different species using plant in different environments; (3) macrohabitat segregation, where different species would not co-occur along the altitudinal gradient. With respect to micro-habitat use, in both species, different instars used different plant parts, while the same instars of both species used the same type of substrate. However, the two Peucetia species segregated by meso-habitat type, with P. rubrolineata preferring T. adenantha plants in shaded areas and P. flava preferring those in open areas. Our results support the hypothesis of Niche Partitioning begetting diversity, and highlight the importance of analyzing habitat use at multiple scales to understand mechanisms related to coexistence.
German Antonio Villanuevabonilla - One of the best experts on this subject based on the ideXlab platform.
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Niche Partitioning and coexistence of two spiders of the genus peucetia araneae oxyopidae inhabiting trichogoniopsis adenantha plants asterales asteraceae
PLOS ONE, 2019Co-Authors: German Antonio Villanuevabonilla, Suyen Safuannaide, Mathias M Pires, Joao VasconcellosnetoAbstract:Niche theory suggests that the coexistence of ecologically similar species in the same site requires some form of resource Partitioning that reduces or avoids interspecific competition. Here, from July 2013 to December 2015, we investigated spatial Niche differentiation at three different scales of two sympatric congeneric spiders, Peucetia rubrolineata and P. flava, along an altitudinal gradient in shaded and open areas in an Atlantic forest in Serra do Japi, SP, Brazil. These spiders are peculiar in that they present an exclusive association with the plant Trichogoniopsis adenantha (Asteraceae). In theory, the coexistence of two Peucetia species could be explained by: (1) microhabitat segregation with individuals from different species occupying different parts of the same plants; (2) mesohabitat segregation with different species using plant in different environments; (3) macrohabitat segregation, where different species would not co-occur along the altitudinal gradient. With respect to micro-habitat use, in both species, different instars used different plant parts, while the same instars of both species used the same type of substrate. However, the two Peucetia species segregated by meso-habitat type, with P. rubrolineata preferring T. adenantha plants in shaded areas and P. flava preferring those in open areas. Our results support the hypothesis of Niche Partitioning begetting diversity, and highlight the importance of analyzing habitat use at multiple scales to understand mechanisms related to coexistence.
Torsten M Scheyer - One of the best experts on this subject based on the ideXlab platform.
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aquatic habits and Niche Partitioning in the extraordinarily long necked triassic reptile tanystropheus
Current Biology, 2020Co-Authors: Stephan N F Spiekman, James M Neenan, Nicholas C Fraser, Vincent Fernandez, Olivier Rieppel, Stefania Nosotti, Torsten M ScheyerAbstract:Tanystropheus longobardicus is one of the most remarkable and iconic Triassic reptiles. Mainly known from the Middle Triassic conservation Lagerstatte of Monte San Giorgio on the Swiss-Italian border, it is characterized by an extraordinarily long and stiffened neck that is almost three times the length of the trunk, despite being composed of only 13 hyper-elongate cervical vertebrae [1-8]. Its paleobiology remains contentious, with both aquatic and terrestrial lifestyles having been proposed [1, 9-12]. Among the Tanystropheus specimens, a small morphotype bearing tricuspid teeth and a large morphotype bearing single-cusped teeth can be recognized, historically considered as juveniles and adults of the same species [4]. Using high-resolution synchrotron radiation microtomography (SRμCT), we three-dimensionally reconstruct a virtually complete but disarticulated skull of the large morphotype, including its endocast and inner ear, to reveal its morphology for the first time. The skull is specialized toward hunting in an aquatic environment, indicated by the placement of the nares on the top of the snout and a "fish-trap"-type dentition. The SRμCT data and limb bone paleohistology reveal that the large morphotype represents a separate species (Tanystropheus hydroides sp. nov.). Skeletochronology of the small morphotype specimens indicates that they are skeletally mature despite their small size, thus representing adult individuals of Tanystropheus longobardicus. The co-occurrence of these two species of disparate size ranges and dentitions provides strong evidence for Niche Partitioning, highlighting the surprising versatility of the Tanystropheus bauplan and the complexity of Middle Triassic nearshore ecosystems.
Vincent Fernandez - One of the best experts on this subject based on the ideXlab platform.
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aquatic habits and Niche Partitioning in the extraordinarily long necked triassic reptile tanystropheus
Current Biology, 2020Co-Authors: Stephan N F Spiekman, James M Neenan, Nicholas C Fraser, Vincent Fernandez, Olivier Rieppel, Stefania Nosotti, Torsten M ScheyerAbstract:Tanystropheus longobardicus is one of the most remarkable and iconic Triassic reptiles. Mainly known from the Middle Triassic conservation Lagerstatte of Monte San Giorgio on the Swiss-Italian border, it is characterized by an extraordinarily long and stiffened neck that is almost three times the length of the trunk, despite being composed of only 13 hyper-elongate cervical vertebrae [1-8]. Its paleobiology remains contentious, with both aquatic and terrestrial lifestyles having been proposed [1, 9-12]. Among the Tanystropheus specimens, a small morphotype bearing tricuspid teeth and a large morphotype bearing single-cusped teeth can be recognized, historically considered as juveniles and adults of the same species [4]. Using high-resolution synchrotron radiation microtomography (SRμCT), we three-dimensionally reconstruct a virtually complete but disarticulated skull of the large morphotype, including its endocast and inner ear, to reveal its morphology for the first time. The skull is specialized toward hunting in an aquatic environment, indicated by the placement of the nares on the top of the snout and a "fish-trap"-type dentition. The SRμCT data and limb bone paleohistology reveal that the large morphotype represents a separate species (Tanystropheus hydroides sp. nov.). Skeletochronology of the small morphotype specimens indicates that they are skeletally mature despite their small size, thus representing adult individuals of Tanystropheus longobardicus. The co-occurrence of these two species of disparate size ranges and dentitions provides strong evidence for Niche Partitioning, highlighting the surprising versatility of the Tanystropheus bauplan and the complexity of Middle Triassic nearshore ecosystems.
Suyen Safuannaide - One of the best experts on this subject based on the ideXlab platform.
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Niche Partitioning and coexistence of two spiders of the genus peucetia araneae oxyopidae inhabiting trichogoniopsis adenantha plants asterales asteraceae
PLOS ONE, 2019Co-Authors: German Antonio Villanuevabonilla, Suyen Safuannaide, Mathias M Pires, Joao VasconcellosnetoAbstract:Niche theory suggests that the coexistence of ecologically similar species in the same site requires some form of resource Partitioning that reduces or avoids interspecific competition. Here, from July 2013 to December 2015, we investigated spatial Niche differentiation at three different scales of two sympatric congeneric spiders, Peucetia rubrolineata and P. flava, along an altitudinal gradient in shaded and open areas in an Atlantic forest in Serra do Japi, SP, Brazil. These spiders are peculiar in that they present an exclusive association with the plant Trichogoniopsis adenantha (Asteraceae). In theory, the coexistence of two Peucetia species could be explained by: (1) microhabitat segregation with individuals from different species occupying different parts of the same plants; (2) mesohabitat segregation with different species using plant in different environments; (3) macrohabitat segregation, where different species would not co-occur along the altitudinal gradient. With respect to micro-habitat use, in both species, different instars used different plant parts, while the same instars of both species used the same type of substrate. However, the two Peucetia species segregated by meso-habitat type, with P. rubrolineata preferring T. adenantha plants in shaded areas and P. flava preferring those in open areas. Our results support the hypothesis of Niche Partitioning begetting diversity, and highlight the importance of analyzing habitat use at multiple scales to understand mechanisms related to coexistence.