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Article ; Online: Leaf and site selection for nest construction and oviposition in Aysha piassaguera Brescovit, 1992 (Araneae: Anyphaenidae)

Zanatta, Mateus Fornazari / Romero, Gustavo Quevedo / Villanueva-Bonilla, German Antonio / Vasconcellos-Neto, João

Journal of Natural History. 2022 Jan. 17, v. 56, no. 1-4 p.15-34

2022

Abstract: Females of the hunting spider Aysha piassaguera build nests for their eggs by folding the leaves of plants, usually at a forest edge, and then they guard the eggs until hatching. These nests have a distinct ‘pyramid-like’ form, but the species’ ... ...

Abstract	Females of the hunting spider Aysha piassaguera build nests for their eggs by folding the leaves of plants, usually at a forest edge, and then they guard the eggs until hatching. These nests have a distinct ‘pyramid-like’ form, but the species’ preferences regarding nest site or the leaves used in its construction remain unknown. We investigated females’ preferences for nest construction sites regarding site location (near the ground or on shrub crowns) and plant group (monocotyledons or eudicotyledons) by comparing the proportions of nests built in each place. We also tested whether leaf traits (length/width ratio, thickness, folding force and leaf mass per area) explained the use of leaves for nest construction using a multiple logistic regression. Females built their nests mainly near the ground and on monocotyledons, which may be related to this species’ life history as A. piassaguera is a wandering spider that hunts and covers the lower part of the substrate. This preference may also be related to the fact that monocotyledons have elongated leaves, which agrees with our finding that length/width ratio is the leaf trait that best explained leaf use for nest construction (females typically used long leaves). Considering the nest architecture, it is likely that compared to short leaves, elongated leaves allow the construction of a more symmetrical and sealed nest, with fewer openings for predator and parasitoid attacks. The selection of appropriate sites for oviposition is an important animal behaviour for the survival of offspring and perpetuation of the species.
Keywords	Anyphaenidae ; Liliopsida ; animal behavior ; edge effects ; leaves ; life history ; natural history ; nesting sites ; nests ; oviposition ; parasitoids ; progeny ; regression analysis ; shrubs ; specific leaf weight ; spiders ; site selection ; offspring survival ; spider nest construction ; Anypaenidae
Language	English
Dates of publication	2022-0117
Size	p. 15-34.
Publishing place	Taylor & Francis
Document type	Article ; Online
ZDB-ID	1467695-3
ISSN	1464-5262 ; 0022-2933
ISSN (online)	1464-5262
ISSN	0022-2933
DOI	10.1080/00222933.2022.2043479
Database	NAL-Catalogue (AGRICOLA)

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Article ; Online: Predator responses to prey camouflage strategies: a meta-analysis.

de Alcantara Viana, João Vitor / Vieira, Camila / Duarte, Rafael Campos / Romero, Gustavo Quevedo

Proceedings. Biological sciences

2022 Volume 289, Issue 1982, Page(s) 20220980

Abstract: Although numerous studies about camouflage have been conducted in the last few decades, there is still a significant gap in our knowledge about the magnitude of protective value of different camouflage strategies in prey detection and survival. ... ...

Abstract	Although numerous studies about camouflage have been conducted in the last few decades, there is still a significant gap in our knowledge about the magnitude of protective value of different camouflage strategies in prey detection and survival. Furthermore, the functional significance of several camouflage strategies remains controversial. Here we carried out a comprehensive meta-analysis including comparisons of different camouflage strategies as well as predator and prey types, considering two response variables: mean predator search time (ST) (63 studies) and predator attack rate (AR) of camouflaged prey (28 studies). Overall, camouflage increased the predator ST by 62.56% and decreased the AR of prey by 27.34%. Masquerade was the camouflage strategy that most increased predator ST (295.43%). Background matching and disruptive coloration did not differ from each other. Motion camouflage did not increase ST but decreases AR on prey. We found no evidence that eyespot increases ST and decreases AR by predators. The different types of predators did not differ from each other, but caterpillars were the type of prey that most influenced the magnitude of camouflage's effect. We highlight the potential evolutionary mechanisms that led camouflage to be a highly effective anti-predatory adaptation, as well as potential discrepancies or redundancies among strategies, predator and prey types.
MeSH term(s)	Adaptation, Physiological ; Animals ; Biological Evolution ; Motion ; Predatory Behavior/physiology
Language	English
Publishing date	2022-09-14
Publishing country	England
Document type	Journal Article ; Meta-Analysis ; Research Support, Non-U.S. Gov't
ZDB-ID	209242-6
ISSN	1471-2954 ; 0080-4649 ; 0962-8452 ; 0950-1193
ISSN (online)	1471-2954
ISSN	0080-4649 ; 0962-8452 ; 0950-1193
DOI	10.1098/rspb.2022.0980
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Article: Warming and top predator loss drive direct and indirect effects on multiple trophic groups within and across ecosystems

Antiqueira, Pablo Augusto P. / Petchey, Owen L. / Rezende, Felipe / Machado Velho, Luiz Felipe / Rodrigues, Luzia Cleide / Romero, Gustavo Quevedo

journal of animal ecology. 2022 Feb., v. 91, no. 2

2022

Abstract: The interspecific interactions within and between adjacent ecosystems strongly depend on the changes in their abiotic and biotic components. However, little is known about how climate change and biodiversity loss in a specific ecosystem can impact the ... ...

Abstract	The interspecific interactions within and between adjacent ecosystems strongly depend on the changes in their abiotic and biotic components. However, little is known about how climate change and biodiversity loss in a specific ecosystem can impact the multiple trophic interactions of different biological groups within and across ecosystems. We used natural microecosystems (tank‐bromeliads) as a model system to investigate the main and interactive effects of aquatic warming and aquatic top predator loss (i.e. trophic downgrading) on trophic relationships in three integrated food web compartments: (a) aquatic micro‐organisms, (b) aquatic macro‐organisms and (c) terrestrial predators (i.e. via cross‐ecosystem effects). The aquatic top predator loss substantially impacted the three food web compartments. In the aquatic macrofauna compartment, trophic downgrading increased the filter feeder richness and abundance directly and indirectly via an increase in detritivore richness, likely through a facilitative interaction. For the microbiota compartment, aquatic top predator loss had a negative effect on algae richness, probably via decreasing the input of nutrients from predator biological activities. Furthermore, the more active terrestrial predators responded more to aquatic top predator loss, via an increase in some components of aquatic macrofauna, than more stationary terrestrial predators. The aquatic trophic downgrading indirectly altered the richness and abundance of cursorial terrestrial predators, but these effects had different direction according to the aquatic functional group, filter feeder or other detritivores. The web‐building predators were indirectly affected by aquatic trophic downgrading due to increased filter feeder richness. Aquatic warming did not affect the aquatic micro‐ or macro‐organisms but did positively affect the abundance of web‐building terrestrial predators. These results allow us to raise a predictive framework of how different anthropogenic changes predicted for the next decades, such as aquatic warming and top predator loss, could differentially affect multiple biological groups through interactions within and across ecosystems.
Keywords	animal ecology ; biodiversity ; climate change ; detritivores ; ecosystems ; fauna ; filter feeding ; food webs ; microorganisms
Language	English
Dates of publication	2022-02
Size	p. 428-442.
Publishing place	John Wiley & Sons, Ltd
Document type	Article
Note	JOURNAL ARTICLE
ZDB-ID	3024-7
ISSN	1365-2656 ; 0021-8790
ISSN (online)	1365-2656
ISSN	0021-8790
DOI	10.1111/1365-2656.13640
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Article ; Online: (with research data) Warming and top predator loss drive ecosystem multifunctionality.

Antiqueira, Pablo Augusto P / Petchey, Owen L / Romero, Gustavo Quevedo

Ecology letters

2017 Volume 21, Issue 1, Page(s) 72–82

Abstract: Global change affects ecosystem functioning both directly by modifications in physicochemical processes, and indirectly, via changes in biotic metabolism and interactions. Unclear, however, is how multiple anthropogenic drivers affect different ... ...

Abstract	Global change affects ecosystem functioning both directly by modifications in physicochemical processes, and indirectly, via changes in biotic metabolism and interactions. Unclear, however, is how multiple anthropogenic drivers affect different components of community structure and the performance of multiple ecosystem functions (ecosystem multifunctionality). We manipulated small natural freshwater ecosystems to investigate how warming and top predator loss affect seven ecosystem functions representing two major dimensions of ecosystem functioning, productivity and metabolism. We investigated their direct and indirect effects on community diversity and standing stock of multitrophic macro and microorganisms. Warming directly increased multifunctional ecosystem productivity and metabolism. In contrast, top predator loss indirectly affected multifunctional ecosystem productivity via changes in the diversity of detritivorous macroinvertebrates, but did not affect ecosystem metabolism. In addition to demonstrating how multiple anthropogenic drivers have different impacts, via different pathways, on ecosystem multifunctionality components, our work should further spur advances in predicting responses of ecosystems to multiple simultaneous environmental changes.
MeSH term(s)	Biodiversity ; Ecosystem ; Food Chain ; Fresh Water
Language	English
Publishing date	2017-11-02
Publishing country	England
Document type	Letter
ZDB-ID	1441608-6
ISSN	1461-0248 ; 1461-023X
ISSN (online)	1461-0248
ISSN	1461-023X
DOI	10.1111/ele.12873
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Article: Terrestrial vertebrate predators drive the structure and functioning of aquatic food webs.

Breviglieri, Crasso Paulo Bosco / Romero, Gustavo Quevedo

Ecology

2017 Volume 98, Issue 8, Page(s) 2069–2080

Abstract: Predators that forage at boundaries between ecosystems can affect prey from adjacent ecosystems, thereby triggering consumptive and non-consumptive cascading effects, which may affect diversity and food web structure across ecosystems. In the present ... ...

Abstract	Predators that forage at boundaries between ecosystems can affect prey from adjacent ecosystems, thereby triggering consumptive and non-consumptive cascading effects, which may affect diversity and food web structure across ecosystems. In the present study, we manipulated the access of insectivorous birds, lizards, and anurans to tank bromeliads in scrub vegetation in southern Brazil. We measured cascading effects on the community structure of aquatic invertebrates inhabiting bromeliad leaves and on the ecosystem processes of decomposition rate and bromeliad growth. The exclusion of terrestrial vertebrate predators increased the biomass of Odonate and Tabanid apex predators, which shifted the body size structure of the assemblage and generated inverted biomass pyramids that were top-heavy. Within bromeliads with larger aquatic predators, the species composition and abundance of other aquatic invertebrates also changed, resulting in higher abundance of mesopredators and scrapers, and lower abundance of shredders. Under those conditions, the detritus decomposition rate decreased, and bromeliads produced more leaves, perhaps because of the higher deposition of nitrogenous waste by mesopredators. Our results highlight that the effects of terrestrial vertebrate predators can propagate across aquatic ecosystems, altering species composition, body size structure, food web organization, and ecosystem function.
MeSH term(s)	Animals ; Aquatic Organisms ; Brazil ; Ecosystem ; Food Chain ; Invertebrates ; Predatory Behavior ; Vertebrates/physiology
Language	English
Publishing date	2017-06-12
Publishing country	United States
Document type	Journal Article
ZDB-ID	1797-8
ISSN	0012-9658
ISSN	0012-9658
DOI	10.1002/ecy.1881
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Article ; Online: Geographical and experimental contexts modulate the effect of warming on top-down control: a meta-analysis.

Marino, Nicholas Dos Anjos Cristiano / Romero, Gustavo Quevedo / Farjalla, Vinicius Fortes

Ecology letters

2018 Volume 21, Issue 3, Page(s) 455–466

Abstract: Ecologists have extensively investigated the effect of warming on consumer-resource interactions, with experiments revealing that warming can strengthen, weaken or have no net effect on top-down control of resources. These experiments have inspired a ... ...

Abstract	Ecologists have extensively investigated the effect of warming on consumer-resource interactions, with experiments revealing that warming can strengthen, weaken or have no net effect on top-down control of resources. These experiments have inspired a body of theoretical work to explain the variation in the effect of warming on top-down control. However, there has been no quantitative attempt to reconcile theory with outcomes from empirical studies. To address the gap between theory and experiment, we performed a meta-analysis to examine the combined effect of experimental warming and top-down control on resource biomass and determined potential sources of variation across experiments. We show that differences in experimental outcomes are related to systematic variation in the geographical distribution of studies. Specifically, warming strengthened top-down control when experiments were conducted in colder regions, but had the opposite effect in warmer regions. Furthermore, we found that differences in the thermoregulation strategy of the consumer and openness of experimental arenas to dispersal can contribute to some deviation from the overall geographical pattern. These results reconcile empirical findings and support the expectation of geographical variation in the response of consumer-resource interactions to warming.
MeSH term(s)	Biomass ; Geography ; Temperature
Language	English
Publishing date	2018-01-24
Publishing country	England
Document type	Journal Article ; Meta-Analysis ; Research Support, Non-U.S. Gov't
ZDB-ID	1441608-6
ISSN	1461-0248 ; 1461-023X
ISSN (online)	1461-0248
ISSN	1461-023X
DOI	10.1111/ele.12913
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Article ; Online: Warming and top predator loss drive direct and indirect effects on multiple trophic groups within and across ecosystems.

Antiqueira, Pablo Augusto P / Petchey, Owen L / Rezende, Felipe / Machado Velho, Luiz Felipe / Rodrigues, Luzia Cleide / Romero, Gustavo Quevedo

The Journal of animal ecology

2021 Volume 91, Issue 2, Page(s) 428–442

Abstract	The interspecific interactions within and between adjacent ecosystems strongly depend on the changes in their abiotic and biotic components. However, little is known about how climate change and biodiversity loss in a specific ecosystem can impact the multiple trophic interactions of different biological groups within and across ecosystems. We used natural microecosystems (tank-bromeliads) as a model system to investigate the main and interactive effects of aquatic warming and aquatic top predator loss (i.e. trophic downgrading) on trophic relationships in three integrated food web compartments: (a) aquatic micro-organisms, (b) aquatic macro-organisms and (c) terrestrial predators (i.e. via cross-ecosystem effects). The aquatic top predator loss substantially impacted the three food web compartments. In the aquatic macrofauna compartment, trophic downgrading increased the filter feeder richness and abundance directly and indirectly via an increase in detritivore richness, likely through a facilitative interaction. For the microbiota compartment, aquatic top predator loss had a negative effect on algae richness, probably via decreasing the input of nutrients from predator biological activities. Furthermore, the more active terrestrial predators responded more to aquatic top predator loss, via an increase in some components of aquatic macrofauna, than more stationary terrestrial predators. The aquatic trophic downgrading indirectly altered the richness and abundance of cursorial terrestrial predators, but these effects had different direction according to the aquatic functional group, filter feeder or other detritivores. The web-building predators were indirectly affected by aquatic trophic downgrading due to increased filter feeder richness. Aquatic warming did not affect the aquatic micro- or macro-organisms but did positively affect the abundance of web-building terrestrial predators. These results allow us to raise a predictive framework of how different anthropogenic changes predicted for the next decades, such as aquatic warming and top predator loss, could differentially affect multiple biological groups through interactions within and across ecosystems.
MeSH term(s)	Animals ; Aquatic Organisms ; Biodiversity ; Ecosystem ; Food Chain ; Microbiota ; Predatory Behavior
Language	English
Publishing date	2021-12-01
Publishing country	England
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	3024-7
ISSN	1365-2656 ; 0021-8790
ISSN (online)	1365-2656
ISSN	0021-8790
DOI	10.1111/1365-2656.13640
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Article ; Online: Floral asymmetry and predation risk modify pollinator behavior, but only predation risk decreases plant fitness.

Antiqueira, Pablo Augusto Poleto / Romero, Gustavo Quevedo

Oecologia

2016 Volume 181, Issue 2, Page(s) 475–485

Abstract: Although predators and floral herbivores can potentially decrease plant fitness by changing pollinator behaviors, studies comparing the strength of these factors as well as their additive and interactive effects on pollinator visitation and plant fitness ...

Abstract	Although predators and floral herbivores can potentially decrease plant fitness by changing pollinator behaviors, studies comparing the strength of these factors as well as their additive and interactive effects on pollinator visitation and plant fitness have not been conducted. In this study, we manipulated the floral symmetry and predator presence (artificial crab spiders) on the flowers of the shrub Rubus rosifolius (Rosaceae) in a 2 × 2 factorial randomized block design. We found that asymmetry and predators decreased pollinator visitation (mainly hymenopterans), and overall these factors did not interact (additive effects). The effect of predation risk on pollinator avoidance behavior was 62 % higher than that of floral asymmetry. Furthermore, path analyses revealed that only predation risk cascaded down to plant fitness, and it significantly decreased fruit biomass by 33 % and seed number by 28 %. We also demonstrated that R. rosifolius fitness is indirectly affected by visiting and avoidance behaviors of pollinators. The strong avoidance behavioral response triggered by predation risk may be related to predator pressure upon flowers. Although floral asymmetry caused by herbivory can alter the quality of resources, it should not exert the same evolutionary pressure as that of predator-prey interactions. Our study highlights the importance of considering simultaneous forces, such as predation risk and floral asymmetry, as well as pollinator behavior when evaluating ecological processes involving mutualistic plant-pollinator systems.
MeSH term(s)	Animals ; Flowers ; Plants ; Pollination ; Predatory Behavior ; Risk
Language	English
Publishing date	2016-06
Publishing country	Germany
Document type	Journal Article
ZDB-ID	123369-5
ISSN	1432-1939 ; 0029-8549
ISSN (online)	1432-1939
ISSN	0029-8549
DOI	10.1007/s00442-016-3564-y
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Article ; Online: Trade-off between soluble protein production and nutritional storage in Bromeliaceae.

Gonçalves, Ana Zangirolame / Mercier, Helenice / Oliveira, Rafael Silva / Romero, Gustavo Quevedo

Annals of botany

2016 Volume 118, Issue 6, Page(s) 1199–1208

Abstract: Background and aims: Bromeliads are able to occupy some of the most nutrient-poor environments especially because they possess absorptive leaf trichomes, leaves organized in rosettes, distinct photosynthetic pathways [C: Methods: Isotopic (: Key ... ...

Abstract	Background and aims: Bromeliads are able to occupy some of the most nutrient-poor environments especially because they possess absorptive leaf trichomes, leaves organized in rosettes, distinct photosynthetic pathways [C Methods: Isotopic ( Key results: It was observed that Bromelioideae had higher concentrations of soluble protein and only one species grew more (Ananas bracteatus), while Tillandsioideae showed higher concentrations of total amino acids, asparagine and did not grow. The ecophysiological types that showed similar protein contents also had similar growth. Additionally, an ordination analysis showed that the subfamilies and ecophysiological types were discrepant considering the results of the total nitrogen incorporated from predators, soluble protein and asparagine concentrations, relative growth rate and leaf mass per area. Conclusions: Bromeliad subfamilies showed a trade-off between two strategies: Tillandsioideae stored nitrogen into amino acids possibly for transamination reactions during nutritional stress and did not grow, whereas Bromelioideae used nitrogen for soluble protein production for immediate utilization, possibly for fast growth. These results highlight that Bromeliaceae evolution may be directly associated with the ability to stock nutrients.
MeSH term(s)	Amino Acids/metabolism ; Amino Acids/physiology ; Ananas/metabolism ; Ananas/physiology ; Asparagine/metabolism ; Asparagine/physiology ; Bromelia/metabolism ; Bromelia/physiology ; Bromeliaceae/growth & development ; Bromeliaceae/metabolism ; Bromeliaceae/physiology ; Nitrogen Isotopes/metabolism ; Plant Leaves/metabolism ; Plant Leaves/physiology ; Plant Physiological Phenomena ; Plant Proteins/metabolism ; Plant Proteins/physiology ; Tillandsia/metabolism ; Tillandsia/physiology
Chemical Substances	Amino Acids ; Nitrogen Isotopes ; Plant Proteins ; Asparagine (7006-34-0)
Language	English
Publishing date	2016-08-29
Publishing country	England
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	1461328-1
ISSN	1095-8290 ; 0305-7364
ISSN (online)	1095-8290
ISSN	0305-7364
DOI	10.1093/aob/mcw174
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Article ; Online: Non-native fishes homogenize native fish communities and reduce ecosystem multifunctionality in tropical lakes over 16 years.

Moi, Dieison André / Alves, Diego Corrêa / Figueiredo, Bruno Renaly Souza / Antiqueira, Pablo Augusto Poleto / Teixeira de Mello, Franco / Jeppesen, Erik / Romero, Gustavo Quevedo / Mormul, Roger Paulo / Bonecker, Claudia Costa

The Science of the total environment

2021 Volume 769, Page(s) 144524

Abstract: Non-native species are considered a major global threat to biodiversity, and their expansion to new ecosystems has recently increased. However, the effect of non-native species on ecosystem functioning is poorly understood, especially in hyperdiverse ... ...

Abstract	Non-native species are considered a major global threat to biodiversity, and their expansion to new ecosystems has recently increased. However, the effect of non-native species on ecosystem functioning is poorly understood, especially in hyperdiverse tropical ecosystems of which long-term studies are scarce. We analyzed the relationship between richness, biomass, and β-diversity of non-native and native fishes during 16 years in five hyperdiverse tropical shallow lakes. We further elucidated how an observed increase in the proportion of richness, biomass, and β-diversity of non-native over native fishes affect crucial multifunctional processes of lakes (decomposition, productivity). We found a general positive relationship between the richness and biomass of non-native and native fishes. However, the slope of this relationship decreased continuously with time, displaying an increase in non-native species richness and a decrease in native species richness over time. We also detected a negative relationship between the β-diversity of non-native and native fishes over time. Moreover, the increase in the non-native:native ratio of species richness, biomass, and β-diversity over time decreased ecosystem multifunctionality. Our results suggest that non-native fishes caused a homogenization of the native fish species over time, resulting in impoverishment of ecosystem multifunctionality; in part because non-native fishes are less productive than native ones. Therefore, focus on long-term effects and use of multiple biodiversity facets (α- and β-diversity) are crucial to make reliable predictions of the effects of non-native fish species on native fishes and ecosystem functioning.
MeSH term(s)	Animals ; Biodiversity ; Biomass ; Ecosystem ; Fishes ; Lakes
Language	English
Publishing date	2021-01-14
Publishing country	Netherlands
Document type	Journal Article
ZDB-ID	121506-1
ISSN	1879-1026 ; 0048-9697
ISSN (online)	1879-1026
ISSN	0048-9697
DOI	10.1016/j.scitotenv.2020.144524
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