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@ARTICLE{Saltin:638979,
      author       = {Saltin, Brian and Müssig, Jörg and Labisch, Susanna and
                      Dirks, Jan-Henning},
      title        = {{T}he biomechanical dilemma of phasmid eggs – how do
                      stick insects hatch?},
      journal      = {The journal of experimental biology},
      volume       = {228},
      number       = {18},
      issn         = {0366-0788},
      address      = {Cambridge},
      publisher    = {Company of Biologists},
      reportid     = {PUBDB-2025-04249},
      pages        = {jeb250729},
      year         = {2025},
      note         = {published version is non-open access. Copyright rules state
                      for institutional repositories: "Any version, including
                      final published PDF, 12 months after publication. Where
                      funder or institute mandate requires earlier deposition
                      (e.g. NIH Public Access policy), author accepted manuscript
                      only. Must link to published article on the journal
                      website." Synchrotron scans were kindly supported by the
                      Deutsches Elektronen-Synchrotron(DESY) research grant for
                      beam time 11011600 at beam line P05.},
      abstract     = {During their development, phasmid eggs with their long
                      developmental periods face numerous biotic and abiotic
                      challenges. These insect eggs are unique for their thick egg
                      capsule and a specialised escape structure called the
                      operculum/lid. This operculum needs to be easy to open from
                      the inside, yet must not be a ‘weak spot’ for potential
                      predators. One possible solution to this biomechanical
                      dilemma could be a change in the operculum's mechanical
                      properties over time. To investigate this hypothesis, we
                      analysed the effect of age and storage conditions on the
                      biomechanical properties of the egg and the operculum. We
                      also performed high-resolution X-ray microscopy (XRM) and
                      synchrotron studies to analyse the ultrastructure of the
                      eggshell and operculum. Our results show that the eggs of
                      Carausius morosus were able to resist a compressive force of
                      up to 2 N. During maturation, the force required to open
                      the operculum was significantly reduced from 0.14 N to
                      0.09 N. The properties of the eggshell itself, however,
                      were not affected by humidity and did not change during
                      maturation. Interestingly, the egg properties were affected
                      by the mother's age. Our results thus indicate that the
                      operculum is not a primary fracture site for externally
                      applied stress; however, structural changes in the operculum
                      during the developmental process of the embryo facilitate
                      the hatching process.},
      cin          = {FS DOOR-User},
      ddc          = {570},
      cid          = {$I:(DE-H253)FS_DOOR-User-20241023$},
      pnm          = {6G3 - PETRA III (DESY) (POF4-6G3) / FS-Proposal: I-20210643
                      (I-20210643) / DFG project G:(GEPRIS)436258345 - NeuroNex:
                      Kommunikation, Koordination, und Kontrolle in
                      Neuromechanischen Systemen (436258345)},
      pid          = {G:(DE-HGF)POF4-6G3 / G:(DE-H253)I-20210643 /
                      G:(GEPRIS)436258345},
      experiment   = {EXP:(DE-H253)P-P05-20150101},
      typ          = {PUB:(DE-HGF)16},
      doi          = {10.1242/jeb.250729},
      url          = {https://bib-pubdb1.desy.de/record/638979},
}