The cost of dispersal: predation as a function of movement and site familiarity in ruffed grouse

Yoder, James M.; Marschall, Elizabeth A.; Swanson, David A.

doi:10.1093/beheco/arh037

Cited by 245 publications

(201 citation statements)

References 35 publications

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“…Documented benefits of group living include saving on per capita invest-ment in silk structures (Riechert 1985;Tietjen 1986), access to larger prey (Rypstra 1993;Jones and Parker 2000;Pekar et al 2005), predator defense (Henschel 1998), and ready access to mates (Holldobler and Wilson 1990;Yoder et al 2004). Dispersal is both costly and risky and may, in some environments, be costlier than inbreeding.…”

Section: Phylogenetics and The Multiple Origins Of Spider Socialitymentioning

confidence: 99%

Sociality in Theridiid Spiders: Repeated Origins of an Evolutionary Dead End

Agnarsson¹,

Avilés²,

Coddington³

et al. 2006

Evol

125

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Abstract.•Evolutionary ' 'dead ends" result from traits that are selectively advantageous in the short term but ultimately result in lowered diversification rates of lineages. In spiders, 23 species scattered across eight families share a social system in which individuals live in colonies and cooperate in nest maintenance, prey capture, and brood care. Most of these species are inbred and have highly female-biased sex ratios. Here we show that in Theridiidae this social system originated eight to nine times independently among 11 to 12 species for a remarkable 18 to 19 origins across spiders. In Theridiidae, the origins cluster significantly in one clade marked by a possible preadaptation: extended maternal care. In most derivations, sociality is limited to isolated species: social species are sister to social species only thrice. To examine whether sociality in spiders represents an evolutionary dead end, we develop a test that compares the observed phylogenetic isolation of social species to the simulated evolution of social and non-social clades under equal diversification rates, and find that sociality in Theridiidae is significantly isolated. Because social clades are not in general smaller than their nonsocial sister clades, the "spindly" phylogenetic pattern•many tiny replicate social clades•may be explained by extinction rapid enough that a nonsocial sister group does not have time to diversify while the social lineage remains extant. In this case, this repeated origin and extinction of sociality suggests a conflict between the short-term benefits and long-term costs of inbred sociality. Although benefits of group living may initially outweigh costs of inbreeding (hence the replicate origins), in the long run the subdivision of the populations in relatively small and highly inbred colony lineages may result in higher extinction, thus an evolutionary dead end.

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Section: Phylogenetics and The Multiple Origins Of Spider Socialitymentioning

confidence: 99%

Sociality in Theridiid Spiders: Repeated Origins of an Evolutionary Dead End

Agnarsson¹,

Avilés²,

Coddington³

et al. 2006

Evol

125

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“…Survival rate strongly influences population growth rate (Robinson et al 2004, Stahl andOli 2006) and habitat factors can affect local survival both through direct effects on mortality and indirectly through influences on dispersal behavior (e.g., Porneluzi and Faaborg 1999, Yoder et al 2004, Devers et al 2007). Thus demographic responses play an important role in determining the extent to which habitat change affects populations.…”

Section: Introductionmentioning

confidence: 99%

Survival of Adult Songbirds in Boreal Forest Landscapes Fragmented by Clearcuts and Natural Openings

Whitaker¹,

Taylor²,

Warkentin³

2008

ACE

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ABSTRACT. There exists little information on demographic responses of boreal songbirds to logging. We conducted a 4-yr (2003)(2004)(2005)(2006) songbird mark-recapture study in western Newfoundland, where land cover is a naturally heterogeneous mosaic of productive spruce-fir forest, stunted taiga, and openings such as bogs, fens, and riparian zones. We compared apparent survival and rate of transience for adults of 14 species between areas having forests fragmented primarily by either natural openings or 3-7 yr-old clearcuts. Data were collected on three landscape pairs, with birds being marked on three 4-6 ha netting sites on each landscape (total = 18 netting sites). Survival rates were estimated using multi-strata mark-recapture models with landscape types specified as model strata. Landscape type was retained in the best model for only two species, Ruby-crowned Kinglet and Yellow-rumped Warbler, in both cases indicating lower apparent survival in landscapes having clearcuts. Though parameter estimates suggested lower survival in clearcut landscapes for several species, meta-analysis across all species detected no general difference between landscape types. Further, we did not detect any relation between landscape differences in survival and a species' habitat affinity, migratory strategy, or the proportion of transients in its population. Although sensitivity to logging was limited, we observed high interspecific variation in rates of breeding season apparent survival (48% [Dark-eyed Junco] to 100% [several species]), overwinter apparent survival (0.3% [Ruby-crowned Kinglet] to 86.5% [Gray Jay]), and transience (≈0% [several species] to 61% [Rubycrowned Kinglet in clearcut landscapes]). For Lincoln's and White-throated Sparrows, over-winter apparent survival was >2× higher for males than females, and rate of transience was > 8× higher for White-throated Sparrow males than females. Moderately male-biased sex ratios suggested that both lower mortality and higher site fidelity contributed to higher apparent survival of males. Overall, variability in our estimates of survival was too great to be explained by mortality alone, suggesting a large influence of landscapescale movement by adults, e.g., breeding dispersal, extra-territorial forays, and transience, on the dynamics of boreal songbird populations. These movement patterns may also confer resilience to localized disturbance in boreal landscapes.RÉSUMÉ. Peu d'informations nous permettent de mesurer la réponse démographique des oiseaux boréaux à l'exploitation forestière. Afin de pallier à cette situation, nous avons effectué une étude par capturerecapture d'une durée de 4 ans (2003)(2004)(2005)(2006)

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“…First, it increases the costs of dispersal by causing mortality when individuals disperse from their natal area to unfamiliar territory (22). This effect can be exacerbated when individuals need to sample their environment for suitable dispersal options (23,24), as is the case in cooperative breeders keeping their territories all year round (25).…”

mentioning

confidence: 99%

Predation risk drives social complexity in cooperative breeders

Groenewoud

Frommen

Josi

et al. 2016

Proc. Natl. Acad. Sci. U.S.A.

128

136

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Predation risk is a major ecological factor selecting for group living. It is largely ignored, however, as an evolutionary driver of social complexity and cooperative breeding, which is attributed mainly to a combination of habitat saturation and enhanced relatedness levels. Social cichlids neither suffer from habitat saturation, nor are their groups composed primarily of relatives. This demands alternative ecological explanations for the evolution of advanced social organization. To address this question, we compared the ecology of eight populations of Neolamprologus pulcher, a cichlid fish arguably representing the pinnacle of social evolution in poikilothermic vertebrates. Results show that variation in social organization and behavior of these fish is primarily explained by predation risk and related ecological factors. Remarkably, ecology affects group structure more strongly than group size, with predation inversely affecting small and large group members. High predation and shelter limitation leads to groups containing few small but many large members, which is an effect enhanced at low population densities. Apparently, enhanced safety from predators by cooperative defense and shelter construction are the primary benefits of sociality. This finding suggests that predation risk can be fundamental for the transition toward complex social organization, which is generally undervalued. social evolution | social complexity | predation risk | ecological constraints | cooperative breeding

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The cost of dispersal: predation as a function of movement and site familiarity in ruffed grouse

Cited by 245 publications

References 35 publications

Sociality in Theridiid Spiders: Repeated Origins of an Evolutionary Dead End

Sociality in Theridiid Spiders: Repeated Origins of an Evolutionary Dead End

Survival of Adult Songbirds in Boreal Forest Landscapes Fragmented by Clearcuts and Natural Openings

Predation risk drives social complexity in cooperative breeders

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