Climate change and sexual size dimorphism in an Arctic spider

Høye, Toke T.; Hammel, Jörg U.; Fuchs, Thomas; Toft, Sune

doi:10.1098/rsbl.2009.0169

Cited by 64 publications

(74 citation statements)

References 21 publications

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“…For instance, earlier spring snowmelt and longer growing seasons are associated with larger adult body size in arctic spider species, particularly in females (Høye et al 2009;Høye & Hammel 2010). Large females have higher reproductive output, but increased sexual size dimorphism may also alter competition between males and females and thus affect survival.…”

Section: (B) Abiotic and Species Interactionsmentioning

confidence: 99%

The effects of phenological mismatches on demography

Miller‐Rushing

Høye

Inouye

et al. 2010

Phil. Trans. R. Soc. B

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532

517

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Climate change is altering the phenology of species across the world, but what are the consequences of these phenological changes for the demography and population dynamics of species? Time-sensitive relationships, such as migration, breeding and predation, may be disrupted or altered, which may in turn alter the rates of reproduction and survival, leading some populations to decline and others to increase in abundance. However, finding evidence for disrupted relationships, or lack thereof, and their demographic effects, is difficult because the necessary detailed observational data are rare. Moreover, we do not know how sensitive species will generally be to phenological mismatches when they occur. Existing long-term studies provide preliminary data for analysing the phenology and demography of species in several locations. In many instances, though, observational protocols may need to be optimized to characterize timing-based multi-trophic interactions. As a basis for future research, we outline some of the key questions and approaches to improving our understanding of the relationships among phenology, demography and climate in a multi-trophic context. There are many challenges associated with this line of research, not the least of which is the need for detailed, long-term data on many organisms in a single system. However, we identify key questions that can be addressed with data that already exist and propose approaches that could guide future research.

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Section: (B) Abiotic and Species Interactionsmentioning

confidence: 99%

The effects of phenological mismatches on demography

Miller‐Rushing

Høye

Inouye

et al. 2010

Phil. Trans. R. Soc. B

Self Cite

532

517

View full text Add to dashboard Cite

show abstract

“…In wolf spiders, Høye et al [24] found that both males and females increased in size in association with earlier snowmelt, but that females grew more. Here, we found the opposite; male AGS at Atigun, where spring conditions occur earlier, weighed less than Toolik males ( figure 7).…”

Section: (C) Body Sizementioning

confidence: 99%

“…Mismatches may also be created between sexes within a species if males and females use different cues to time their phenology or respond to climate change differently. Høye et al [24] found that earlier snowmelt increased adult body size in wolf spiders but with a skew towards positive sexual size dimorphism, which may have later effects on population dynamics.…”

Section: Introductionmentioning

confidence: 99%

Changing seasonality and phenological responses of free-living male arctic ground squirrels: the importance of sex

Sheriff

Richter

Buck

et al. 2013

Phil. Trans. R. Soc. B

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Many studies have addressed the effects of climate change on species as a whole; however, few have examined the possibility of sex-specific differences. To understand better the impact that changing patterns of snow-cover have on an important resident Arctic mammal, we investigated the long-term (13 years) phenology of hibernating male arctic ground squirrels living at two nearby sites in northern Alaska that experience significantly different snow-cover regimes. Previously, we demonstrated that snow-cover influences the timing of phenological events in females. Our results here suggest that the end of heterothermy in males is influenced by soil temperature and an endogenous circannual clock, but timing of male emergence from hibernation is influenced by the timing of female emergence. Males at both sites, Atigun and Toolik, end heterothermy on the same date in spring, but remain in their burrows while undergoing reproductive maturation. However, at Atigun, where snowmelt and female emergence occur relatively early, males emerge 8 days earlier than those at Toolik, maintaining a 12-day period between male and female emergence found at each site, but reducing the pre-emergence euthermic period that is critical for reproductive maturation. This sensitivity in timing of male emergence to female emergence will need to be matched by phase shifts in the circannual clock and responsiveness to environmental factors that time the end of heterothermy, if synchrony in reproductive readiness between the sexes is to be preserved in a rapidly changing climate.

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“…These studies follow up on earlier studies of body size variation in spiders collected in the same pitfall traps. In the High Arctic crab spider (Xysticus deichmanni Sørensen 1898), body size varied among habitats (Bowden et al 2015b), while in a more mobile wolf spider (Pardosa glacialis), body size was positively associated with interannual variation in the length of the growing season (Høye et al 2009). The pattern of temporal variation in wolf spider body sizes was corroborated by similar variation along an elevational gradient for two of three wolf spider species studied at Disko Island in West Greenland (Høye and Hammel 2010).…”

Section: Arctic Long-term Monitoringmentioning

confidence: 99%

The value of museums in the production, sharing, and use of entomological data to document hyperdiversity of the changing North

et al. 2017

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If the current rate of climate change continues, the composition, distribution, and relative population sizes of species in the higher latitudes of the Northern Hemisphere are likely to change considerably. Understanding the magnitude of this change requires a well-documented baseline against which to compare. Although specimen-less observations can help augment such a baseline for the minority of organisms that can be confidently identified in the field or from photographs, the vast majority of species are small-bodied invertebrates, primarily arthropods, that can only be identified from preserved specimens and (or) their tissues. Museum staff archive specimens and make them and their data available for research. This paper describes a number of challenges to the goal of thorough documentation of high-latitude arthropod biodiversity and their potential solutions. Examples are provided from ongoing and recently completed research that demonstrates the value of museum specimens and the sharing of their data via global portals like GBIF.org.Key words: Arctic, biodiversity, Arthropoda, monitoring, inventory, taxonomic bottleneck.Résumé : Si le taux actuel du changement climatique se maintient, la composition, la répar-tition et les tailles de population relatives d'espèces dans les latitudes plus hautes de l'hémi-sphère nord sont susceptibles de changer considérablement. Pour comprendre l'ampleur de ce changement, il faut une ligne de référence bien documentée contre laquelle on peut comparer. Bien que les observations sans spécimens puissent aider à augmenter une telle ligne de référence pour la minorité d'organismes qui peuvent être identifiés avec assurance sur le terrain ou à partir de photographies, la grande majorité d'espèces est composée d'inverté-brés à petit corps, principalement des arthropodes, qui ne peuvent être identifiés qu'à partir de spécimens préservés et (ou) de leurs tissus. Le personnel de musées archive les spécimens et les rend disponibles ainsi que les données connexes aux fins de recherche. Dans cet article, on décrit un certain nombre de défis à l'encontre du but de la documentation minutieuse de la biodiversité d'arthropodes à hautes latitudes et les solutions potentielles à ces défis. On fournit des exemples de recherche en cours et récemment complétée qui démontr-ent la valeur de spécimens de musée et le partage de données via des portails mondiaux comme le Système mondial d'informations sur la biodiversité (GBIF.org).

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Climate change and sexual size dimorphism in an Arctic spider

Cited by 64 publications

References 21 publications

The effects of phenological mismatches on demography

The effects of phenological mismatches on demography

Changing seasonality and phenological responses of free-living male arctic ground squirrels: the importance of sex

The value of museums in the production, sharing, and use of entomological data to document hyperdiversity of the changing North

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