Case selection by a limnephilid caddisfly [Potamophylax latipennis (Curtis)] in response to different predators

Boyero, Luz; Rincón, Pedro A.; Bosch, Jaime

doi:10.1007/s00265-005-0059-y

Cited by 34 publications

(14 citation statements)

References 53 publications

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“…Such changes in behavior according to perceived threats are common (Boyero et al. ). Further, L. rhombicus larvae can utilize up to 35% of their protein budget on case construction in ambient conditions (Mondy et al.…”

Section: Discussionmentioning

confidence: 99%

Density constrains cascading consequences of warming and nitrogen from invertebrate growth to litter decomposition

Hines

Reyes

Gessner

2016

Ecology

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Abstract.Smaller invertebrate body mass is claimed to be a universal response to climate warming. It has been suggested that body mass could also predict consumer influences on ecosystem processes in a warmer world because generalized rules describe relationships between body mass, temperature, and metabolism. However, the utility of this suggestion remains tenuous because the nutritional and physiological constraints underlying relationships between body mass and consumer-driven processes are highly variable in realistic settings. Here we test, using a generalist invertebrate detritivore, fungi, and leaf litter, the limitations imposed by nutrition on growth and decomposition in response to global change. Strong competition for fungal food resources limited invertebrate growth and reduced body mass plasticity in response to warming and nitrogen pollution scenarios. When competition was relaxed by experimentally reducing invertebrate density, consumption of fungi promoted rapid invertebrate growth and enhanced invertebrate sensitivity to the global change scenarios, especially warming and nitrogen pollution together. Accordingly, fungi promoted invertebrate body mass plasticity and mediated consumer effects on decomposition causing the relative influence of warming and nitrogen pollution to vary across trophic levels. An important implication is that managing nitrogen pollution may alter which trophic level is most sensitive to warming.

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Section: Discussionmentioning

confidence: 99%

Density constrains cascading consequences of warming and nitrogen from invertebrate growth to litter decomposition

Hines

Reyes

Gessner

2016

Ecology

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“…A key component of this interaction is for prey to be able to sense predation risk and respond in a way that minimizes the risk of being consumed. Despite arguments to the contrary (Greig and McIntosh ), ample evidence indicates that prey in brown systems exhibit risk‐sensitive behavior by altering activity levels (Åbjörnsson et al , Nilsson and Bengtsson , b, Boyero et al , Binz et al , Sitvarin et al ), changing space use (Stief and Hölker , Calizza et al , Zhao et al , Wu et al ), and modifying other behaviors (Boyero et al ) in response to the threat of predation. The largest impact of predation risk is expected in terms of prey feeding behavior (Preisser and Bolnick ), which creates the potential for parallel mechanisms of top–down control to operate in green and brown systems.…”

Section: The Brown Worldmentioning

confidence: 99%

Linking the green and brown worlds through nonconsumptive predator effects

Sitvarin

Rypstra

Harwood

2016

Oikos

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Predators can indirectly aff ect lower trophic levels by either consuming their prey (consumptive eff ect, CE) or by changing the physiology or behavior of their prey (nonconsumptive eff ect, NCE). Cascading eff ects of predators on primary producers are common, and can be propagated by CEs, NCEs, or a combination of both mechanisms.Predator impacts in detrital food webs (the ' brown world ' ) have received considerably less attention than their eff ects on systems with primary producers at the base (the ' green world ' ), and only recently have we begun to appreciate the importance of above-ground predators indirectly impacting below-ground processes.Numerous studies reveal the total impact (CEs and NCEs) of predators in brown food webs, but our understanding of the role of isolated NCEs is limited. Many habitats and major taxa have not been studied, and patterns are diffi cult to distinguish due to frequent reporting of mixed eff ects.Predators play an important role as connectors between brown and green worlds when they feed from both food webs (multichannel feeding). We are only beginning to understand how NCEs infl uence detrital food webs, and it is unknown whether multichannel fear is an essential component of predator -prey ecology that regulates ecosystem function.

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“…This suggests that if the mechanisms identified in Figure are significant, case‐building caddisfly could be important zoogeomorphic engineers in this stream. The considerable variability in the size of sediment used by different taxa in this study (Figure ) probably reflects differences in the function of the larval cases (Otto and Svensson, ; Wiggins, ; Boyero et al ., ). For example, the fine grains used in Sericostomatidae cases ( D 50 = 0.27, Table ) result in smooth, tapered cases, which may facilitate burrowing.…”

Section: Discussionmentioning

confidence: 99%

The zoogeomorphology of case‐building caddisfly: Quantifying sediment use

Mason

Rice

Wood

et al. 2019

Earth Surf Processes Landf

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Caddisfly (Trichoptera) larvae are an abundant and widespread aquatic insect group characterized by the construction of silk structures, including nets and cases. Case‐building caddisfly have the potential to modify the sorting and mobility of sand and fine gravel via: (1) case construction, resulting in altered sediment properties; (2) transporting sediment incorporated into cases over the river bed; and (3) changing the structure of river beds via burrowing activity. To investigate these mechanisms, it is necessary to understand the mass, size distribution and spatial variability of sediment use by case‐building caddisfly larvae. We quantified the mineral sediment used by individuals and communities of case‐building caddisfly in 27 samples, from three sites on a gravel‐bed stream. The mass and size distribution of sediment in individual cases varied between taxa (mass = 0.001–0.83 g, D50 = 0.17–4 mm). The mean mass of sediment used by the caddisfly community was 38 g m−2 and varied locally. Sediment use was predominantly coarse sand (D50 = 1 mm). 64% of sediment use was attributable to Agapetus fuscipes (Glossosomatidae). Due to within‐species variability in case mass, the abundance of most taxa, including A. fuscipes, was only weakly associated with the mass of sediment used by this species, at the river scale. Whilst the caddisfly community used a small percentage of the total sediment available (average 2.99% of the 1–1.4 mm size fraction), A. fuscipes used more fine sediment in their cases at sites where it was more available. Despite variability in local habitat, all sites supported diverse case‐building caddisfly communities utilizing mineral sediment. Consequently, geomorphological effects of case‐building caddisfly are potentially widespread. The results provide novel insights into the specific grain sizes and quantities of fine sediment used by caddisfly larvae, which represents an important step towards understanding their zoogeomorphic activities. © 2019 The Authors. Earth Surface Processes and Landforms Published by John Wiley & Sons Ltd.

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Case selection by a limnephilid caddisfly [Potamophylax latipennis (Curtis)] in response to different predators

Cited by 34 publications

References 53 publications

Density constrains cascading consequences of warming and nitrogen from invertebrate growth to litter decomposition

Density constrains cascading consequences of warming and nitrogen from invertebrate growth to litter decomposition

Linking the green and brown worlds through nonconsumptive predator effects

The zoogeomorphology of case‐building caddisfly: Quantifying sediment use

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