SPIDER DRAGLINE SILK: CORRELATED AND MOSAIC EVOLUTION IN HIGH-PERFORMANCE BIOLOGICAL MATERIALS

@inproceedings{Swanson2006SPIDERDS,
  title={SPIDER DRAGLINE SILK: CORRELATED AND MOSAIC EVOLUTION IN HIGH-PERFORMANCE BIOLOGICAL MATERIALS},
  author={Brook O. Swanson and Todd A. Blackledge and Adam P. Summers and Cheryl Y. Hayashi},
  booktitle={Evolution; international journal of organic evolution},
  year={2006}
}
Abstract The evolution of biological materials is a critical, yet poorly understood, component in the generation of biodiversity. For example, the diversification of spiders is correlated with evolutionary changes in the way they use silk, and the material properties of these fibers, such as strength, toughness, extensibility, and stiffness, have profound effects on ecological function. Here, we examine the evolution of the material properties of dragline silk across a phylogenetically diverse… 

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References

SHOWING 1-10 OF 80 REFERENCES

Modular evolution of egg case silk genes across orb-weaving spider superfamilies.

TLDR
Spider fibroin TuSp1 appears to be the major component of tubuliform gland silk, a fiber exclusively synthesized by female spiders for egg case construction, and repetitive architecture is a general feature of this gene family, consistent with a single origin of this ortholog group.

Silken toolkits: biomechanics of silk fibers spun by the orb web spider Argiope argentata (Fabricius 1775)

TLDR
The mechanical performance of this toolkit of silks for the silver garden spider Argiope argentata is quantitatively measured and indicates substantial potential to customize the mechanics of bioengineered silks.

Variability in the mechanical properties of spider silks on three levels: interspecific, intraspecific and intraindividual.

Molecular studies of a novel dragline silk from a nursery web spider, Euprosthenops sp. (Pisauridae).

Analysis of major ampullate silk cDNAs from two non-orb-weaving spiders.

TLDR
Four partial cDNA clones representing major ampullate spider silk gene transcripts from two non-orb weavers are isolated and sequenced, indicating that the repeats encoding conserved amino acid motifs that are characteristic of some orb-weaving spider silks are also found in some of the cDNAs reported in this study.

Are three-dimensional spider webs defensive adaptations?

TLDR
It is argued that mud-dauber wasps are major predators of orbicularian spiders, and exert a directional selective pressure to construct three-dimensional webs such that three- dimensional webs are partly defensive innovations.

Hypotheses that correlate the sequence, structure, and mechanical properties of spider silk proteins.

Evolution of the biomechanical material properties of the femur

TLDR
Material properties of the first long bones 475 million years ago were conserved throughout evolution, and major locomotory challenges to femora during vertebrate evolution were almost solely accomplished by modifications of element size and shape.

Extreme Diversity, Conservation, and Convergence of Spider Silk Fibroin Sequences

TLDR
Fibroin sequences from basal spider lineages reveal mosaics of amino acid motifs that differ radically from previously described spider silk sequences, implying that these sequences are central to understanding the exceptional mechanical properties of orb weaver silks.
...