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Primary Production01:06

Primary Production

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The total amount of energy acquired by primary producers in an ecosystem is called gross primary production (GPP). However, of this energy, producers use some for metabolic processes, and some is lost as heat, decreasing the amount of energy available to the next trophic level. The remaining usable amount of energy is called the net primary productivity (NPP). In terrestrial ecosystems, NPP is driven by climate, while light penetration and nutrient availability drive NPP in aquatic ecosystems.
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Related Experiment Video

Updated: May 9, 2025

A Method for Extracting Pigments from Squid Doryteuthis pealeii
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Structurally Colored Sustainable Sea Silk from Atrina pectinata.

Jimin Choi1, Jun-Hyung Im2, Young-Ki Kim2

  • 1Division of Environmental Science and Engineering, Pohang University of Science and Technology, Pohang, 37673, Republic of Korea.

Advanced Materials (Deerfield Beach, Fla.)
|April 29, 2025
PubMed
Summary

Sustainable sea silk production is now possible using the mollusk Atrina pectinata. Its byssal threads offer a golden, lightfast textile alternative, addressing conservation concerns for Pinna nobilis.

Keywords:
golden silkshierarchical structurephotoninssea silksstructural colorsugar‐lectin interaction

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Area of Science:

  • Biomaterials Science
  • Textile Engineering
  • Marine Biology

Background:

  • Sea silk, a luxurious golden textile, is traditionally harvested from the endangered mollusk Pinna nobilis.
  • Conservation efforts for Pinna nobilis limit traditional sea silk production, necessitating sustainable alternatives.
  • The Pinnidae family contains potential alternative sources for sea silk production.

Purpose of the Study:

  • To identify a sustainable source for sea silk production.
  • To investigate the properties of byssal threads from Atrina pectinata for textile applications.
  • To understand the biomolecular basis of sea silk's unique characteristics.

Main Methods:

  • Phylogenetic analysis to identify related species.
  • Byssal thread harvesting and processing using established methods.
  • Structural and chemical analysis of byssal threads, including protein organization and coloration mechanisms.

Main Results:

  • Atrina pectinata, a close relative of Pinna nobilis, is identified as a viable source for sea silk.
  • A. pectinata byssal threads possess a hierarchical structure with globular proteins and sugar-lectin interactions.
  • The threads exhibit structural coloration, resulting in a brilliant, lightfast golden hue.

Conclusions:

  • Atrina pectinata offers a sustainable alternative for producing high-quality golden sea silk textiles.
  • The biomolecular insights into A. pectinata byssal threads can inform the development of bioinspired pigments.
  • This research addresses the demand for eco-friendly, durable colored materials in the textile and pigment industries.