A novel membrane specialization in the sperm tail of bug insects (Heteroptera)

Journal of Morphology
David MercatiR Dallai

Abstract

The sperm tail of bug insects has 9 + 9 + 2 flagellar axonemes and two mitochondrial derivatives showing two to three crystalline inclusions in their matrix. During spermiogenesis, the axoneme is surrounded by a membrane cistern which, at sperm maturity, reduces to two short cisterns on the opposite sides of the axoneme adhering to the mitochondrial derivatives. Filamentous bridges connect the intertubular material of the axoneme to these cisterns. Such bridges, which represent a peculiar feature of bug insects, are resistant to detergent treatment, whereas part of the intertubular material and the inner content of microtubular doublets are affected by the treatment. After freeze-fracture replicas, at the insertion of the bridges to the cisternal membrane, the P-face of this membrane shows a characteristic ribbon consisting of four rows of 11 +/- 1 nm staggered intramembrane particles, 13 +/- 2 nm apart along each row. The bridges could be able to maintain the axoneme in the proper position during flagellar beating avoiding distortion affecting sperm motility.

References

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Nov 1, 1974·The Journal of Cell Biology·D S Friend, D W Fawcett
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Jun 1, 1980·Journal of Morphology·Romano Dallai, Björn A Afzelius

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Citations

Jan 17, 2016·Arthropod Structure & Development·David Mercati, Romano Dallai
Jan 18, 2016·Micron : the International Research and Review Journal for Microscopy·Glenda DiasRomano Dallai
Mar 8, 2011·Micron : the International Research and Review Journal for Microscopy·Vinícius Albano AraújoJosé Eduardo Serrão
Mar 18, 2016·Annual Review of Entomology·Romano DallaiRolf Georg Beutel
Apr 17, 2012·Micron : the International Research and Review Journal for Microscopy·Beibei Zhang, Wu Dai
Apr 16, 2014·Arthropod Structure & Development·Romano Dallai
Jan 25, 2017·Medical and Veterinary Entomology·A F BaffaS P C Freitas
Apr 26, 2017·Arthropod Structure & Development·Ademária M NovaisJosé Lino-Neto
Jun 3, 2015·Microscopy Research and Technique·Nurcan ÖzyurtZekiye Suludere
Feb 26, 2019·Journal of Medical Entomology·Maria Luiza Ribeiro de OliveiraJacenir Reis Santos-Mallet

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