Population structure and interdemic selection in the cooperative spider <i>Anelosimus eximius</i>

Smith, Deborah R.; Hagen, R. H.

doi:10.1046/j.1420-9101.1996.9050589.x

Cited by 59 publications

(70 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Social spiders in a sense have an 'intermediate' reproductive system. They are highly inbred (Lubin & Crozier 1985;Roeloffs & Riechert 1988;Smith & Engel 1994;Smith & Hagen 1996;Johannesen et al 2002), probably experiencing only sporadic outbreeding (T. Bilde 2004, unpublished data). If gene flow between lineages is rare, social spiders might be considered 'clonal'.…”

Section: Discussionmentioning

confidence: 99%

The age and evolution of sociality in Stegodyphus spiders: a molecular phylogenetic perspective

et al. 2006

View full text Add to dashboard Cite

Social, cooperative breeding behaviour is rare in spiders and generally characterized by inbreeding, skewed sex ratios and high rates of colony turnover, processes that when combined may reduce genetic variation and lower individual fitness quickly. On these grounds, social spider species have been suggested to be unstable in evolutionary time, and hence sociality a rare phenomenon in spiders. Based on a partial molecular phylogeny of the genus Stegodyphus, we address the hypothesis that social spiders in this genus are evolutionary transient. We estimate the age of the three social species, test whether they represent an ancestral or derived state and assess diversification relative to subsocial congeners. Intraspecific sequence divergence was high in all of the social species, lending no support for the idea that they are young, transient species. The age of the social lineages, constant lineage branching and the likelihood that social species are independently derived suggest that either the social species are 'caught in sociality' or they have evolved into cryptic species.

show abstract

Section: Discussionmentioning

confidence: 99%

The age and evolution of sociality in Stegodyphus spiders: a molecular phylogenetic perspective

et al. 2006

View full text Add to dashboard Cite

show abstract

“…Aoki 1977). Similarly, eusocial naked mole rats, social spider mites and social spiders are characterized by high levels of inbreeding (Reeve et al 1990;Smith and Hagen 1996;Saito 1997). In Xyleborini, levels of inbreeding are likely to be extremely high owing to their mating system (e.g.…”

Section: Discussionmentioning

confidence: 99%

Delayed dispersal as a potential route to cooperative breeding in ambrosia beetles

Peer

Taborsky

2006

Behav Ecol Sociobiol

View full text Add to dashboard Cite

Xyleborini are a species-rich tribe of ambrosia beetles, which are haplodiploid and typically mate among siblings within their natal brood chamber. Several characteristics of this tribe would predict the evolution of higher levels of sociality: high genetic relatedness within galleries due to inbreeding, high costs of dispersal and the potential benefit of cooperation in brood care within the natal gallery (e.g. by fungus gardening, gallery extension, offspring feeding and cleaning). However, information on the social system of these beetles is very limited. We examined the potential for cooperative breeding in Xyleborinus saxeseni by monitoring dispersal in relation to brood size and composition. Results show that adult female offspring delay dispersal despite dispersal opportunities, and apparently some females never disperse. The females' decision to stay seems to depend on the presence of eggs and dependent siblings. We found no indication that female offspring reproduce in their natal gallery, as colonies with many mature daughters do not contain more eggs than those with few or no daughters. There is a significant positive relationship between the number of females present and the number of dependent siblings (but not eggs), which suggests that cooperative brood care of female offspring raises colony productivity by improving survival rates of immatures. Our results suggest that cooperative breeding is likely to occur in X. saxeseni and possibly other xyleborine species. We argue that a closer look at sociality within this tribe may yield important information on the factors determining the evolution of cooperative breeding and advanced social organization.

show abstract

“…Thus, for S. lineatus , patches, not spider groups, defined populations. This contrasts with the social spiders where colonies or clusters of colonies, and not patches, most often define the population units ( Smith & Engel, 1994; Smith & Hagen, 1996; but see also Lubin & Crozier, 1985). …”

Section: Discussionmentioning

confidence: 99%

Group founding and breeding structure in the subsocial spider Stegodyphus lineatus (Eresidae)

Johannesen

Lubin

1999

Heredity

View full text Add to dashboard Cite

Co-operative behaviour may evolve by enhancing the genetic similarity of group members. Increased group similarity is thought to be the basis for the 'subsocial route' of social evolution in the spider family Eresidae. Two processes may promote the similarity of individuals within populations or breeding groups, namely philopatry in stable environments and founder events in a stochastic environment. We show that both processes led to genetic differentiation within and among populations of the subsocial spider Stegodyphus lineatus. Within populations we distinguished between the genetic structure caused by random mating and philopatry in old breeding groups and that caused by newly founded groups consisting of sibs. Such sib-groups suggest that new breeding groups are established primarily by single females. The different gene coancestries among breeding groups resulted in high variances among single-locus data. The results imply that sex-specific dispersal behaviour (random male mating-dispersal or female group founding) had different impacts on the population structure. This type of population structure, where within-population philopatry and founder events may lead to differential proliferation of breeding groups, is very similar to that presumed for social spiders, and is also one that could provide the conditions for interdemic selection.

show abstract

Population structure and interdemic selection in the cooperative spider Anelosimus eximius

Cited by 59 publications

References 18 publications

The age and evolution of sociality in Stegodyphus spiders: a molecular phylogenetic perspective

The age and evolution of sociality in Stegodyphus spiders: a molecular phylogenetic perspective

Delayed dispersal as a potential route to cooperative breeding in ambrosia beetles

Group founding and breeding structure in the subsocial spider Stegodyphus lineatus (Eresidae)

Contact Info

Product

Resources

About