Egg size versus egg number trade-off in the alpine-tundra wolf spider, Pardosa palustris (Araneae: Lycosidae)

Hein, Nils; Brendel, Marco R.; Feilhauer, Hannes; Finch, Oliver‐D.; Löffler, Jörg

doi:10.1007/s00300-018-2301-x

Cited by 20 publications

(27 citation statements)

References 65 publications

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“…However, Otto and Svensson (1982) found a decrease in body size in several Araneae species with elevation and assumed that it is advantageous to be of smaller size at higher elevations, because a smaller size makes it easier to seek shelter in open habitats if predators appear. In previous studies, we found body size in different Pardosa species to decrease, but also to increase with elevation in central Norway (Hein et al 2015), and there also seems to be a pronounced inter-annual variation in body size rather than a variation along the elevational gradient (Hein et al 2018). This corresponds with findings of Lee, Somers, and Chown (2011), who were not able to detect a linear trend in the size of the indigenous spider Myro kerguelensis (O.P.-CAMBRIDGE 1876) with elevational in a sub-antarctic environment.…”

Section: Effects Of Elevationmentioning

confidence: 56%

“…This will, consequently, result in a better understanding of spatio-temporal patterns of species distribution and adaptations in response to changing environments. Consequently, the driving principles of phenotypic variation in individual-environment interactions are in the focus of current research (e.g., Chevin, Lande, and Mace 2010;Ameline et al 2018;Hein et al 2018). However, knowledge about specific spatial and temporal variations of life history traits remains scarce in invertebrates, especially in cold environments (Homburg et al 2013;Høye and Sikes 2013;Ameline et al 2017).…”

Section: Introductionmentioning

confidence: 99%

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Broad-scale rather than fine-scale environmental variation drives body size in a wandering predator (Araneae, Lycosidae)

Hein

Pétillon

Pape

et al. 2019

Arctic, Antarctic, and Alpine Research

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Body size is one of the most important individual traits, determining various other life-history traits, including fitness. Both evolutionary and ecological factors shape the body size in arthropods, but the relative contribution of abiotic drivers acting at different spatial scales has been little investigated. We aimed to identify the importance of two broad-scale variables (study region and elevation) in shaping body size of the free-running and locally abundant wolf spider Pardosa palustris (LINNAEUS 1758), in contrast to the fine-scaled variable topographic position. Therefore, we set up transects along environmental gradients in the arctic-alpine ecosystems of Norway, which we analyzed using a random forest approach to identify the relative importance of topographic position, elevation, and study region on body size of P. palustris. Our approach revealed that research region was the best explanatory variable, followed by elevation and topographic position. Differences in body size were most likely a consequence of the pronounced differences in season length and the ability of P. palustris to avoid local unfavorable environmental conditions due to its high mobility.

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Section: Effects Of Elevationmentioning

confidence: 56%

Section: Introductionmentioning

confidence: 99%

Broad-scale rather than fine-scale environmental variation drives body size in a wandering predator (Araneae, Lycosidae)

Hein

Pétillon

Pape

et al. 2019

Arctic, Antarctic, and Alpine Research

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“…The advantage of the prolonged life-cycle at high elevations is thus to grow larger and have higher reproduction values, always under the disadvantage of a concomitant increased mortality rate [62]. So far, our previous studies on P. palustris in the research area studies could not unravel whether P. palustris shows a prolonged life-cycle at higher elevations or not [27,63,64]. In females, however, the production of egg sacs might be delayed at higher elevations and latitudes due to the timing of snow melt [63,64].…”

Section: Methodsmentioning

confidence: 95%

Differences in Mobility and Dispersal Capacity Determine Body Size Clines in Two Common Alpine-Tundra Arthropods

Beckers

Hein

Anneser

et al. 2020

Insects

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The Arctic is projected to be severely impacted by changes in temperature and precipitation. Species react to these changes by shifts in ranges, phenology, and body size. In ectotherms, the patterns of body size clines and their underlying mechanisms are often hard to untangle. Mountains provide a space-for-time substitute to study these shifts along multiple spatial gradients. As such, mobility and dispersal capacity might conceal reactions with elevation. We test this influence on body size clines by comparing two common arthropods of the alpine tundra. We find that high mobility in the lycosid spider Pardosa palustris blurs elevational effects. Partially low mobility at least during development makes the carabid beetle Amara alpina more susceptible to elevational effects. Specific life-history mechanisms, such as brood care in lycosid spiders and holometabolic development in carabid beetles, are the possible cause.

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“…In tundra regions, environmental gradients are very pronounced and spatial and temporal variation in such life-history trade-offs become particularly evident. This is the case of the clutch size and egg-size trade-offs in wolf spiders as studied by Hein et al (2018). The authors find that such trade-offs are more sensitive to inter-annual variation in climatic conditions than to spatial variation along the tree line in Pardosa palustris.…”

Section: Tundra Arthropods and Spatio-temporal Environmental Variationmentioning

confidence: 95%

“…The topics of the papers in this issue are representative of the diverse makeup of NeAT-scientists and scholars working at both poles and in alpine regions to understand current topics in tundra arthropod ecology. One set of papers (Docherty et al 2018;Høye et al 2018;Bowden et al 2018;Convey et al 2018;Hein et al 2018;Turney et al 2018) is broadly focused on characterizing how the abundance and life-history traits of tundra arthropods vary in relation to spatial and temporal environmental variation. The second set (Barrio et al 2017;Koltz et al 2018a;Sanchez-Ruiz et al 2018;Urbanowicz et al 2017;Müllerová et al 2018) is focused on characterizing the ecological roles of tundra arthropods in food webs and ecosystems.…”

Section: Network For Arthropods Of the Tundra (Neat)mentioning

confidence: 99%

Tundra arthropods provide key insights into ecological responses to environmental change

Høye

Culler

2018

Polar Biol

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Arthropods perform critically important functions in food webs and ecosystems and are highly sensitive to the effects of environmental change. Despite their importance, the knowledge gaps in arthropod ecology are substantial. This is particularly problematic in Earth's polar and alpine regions, where tundra ecosystems are responding rapidly to climate change. Species diversity is lower in these regions versus temperate and tropical regions, but (1) we lack baseline and long-term data about the distributions and abundances of arthropods and their relationships to abiotic variation and (2) the roles of arthropods in these ecosystems are far from fully described. In recognition of the need for increased tundra arthropod research activity, a group of international scientists formed the Network for Arthropods of the Tundra (NeAT). In the past 3 years, this academic network has brought together entomologists from research institutions around the world to revitalize and coordinate the study of tundra arthropods. This special issue on the ecology of tundra arthropods represents a tangible example of this increased momentum. The papers in the special issue highlight recent advances in understanding the relationships between arthropod communities and abiotic variation in tundra ecosystems and clarify the roles that arthropods play in ecosystems. They collectively demonstrate the utility of tundra arthropods as a model system for testing general ecological theory about how species respond to environmental variation. We hope this special issue with the insights it provides and the new frontiers it outlines, together with NeAT, will leverage further momentum to the interest in, and study of the ecology of tundra arthropods in the years to come.

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Egg size versus egg number trade-off in the alpine-tundra wolf spider, Pardosa palustris (Araneae: Lycosidae)

Cited by 20 publications

References 65 publications

Broad-scale rather than fine-scale environmental variation drives body size in a wandering predator (Araneae, Lycosidae)

Broad-scale rather than fine-scale environmental variation drives body size in a wandering predator (Araneae, Lycosidae)

Differences in Mobility and Dispersal Capacity Determine Body Size Clines in Two Common Alpine-Tundra Arthropods

Tundra arthropods provide key insights into ecological responses to environmental change

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