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<p>The structure of photophores in juvenile stages of the mesopelagic fish <i>Vinciguerria mabahiss</i> (Phosichthyidae), a species endemic to the Red Sea, is described. Each individual <i>V. mabahiss</i> has between 140–144 photophores located on the head, ventral, and lateral body surfaces. Volumetric estimates of photophore size shows that they fall into three size classes. Histological examination of photophores shows that all have a similar composition, regardless of body region. The distribution and structural consistency of photophores in <i>V. mabahiss</i> suggests that they use bioluminescence primarily for counterillumination. This anatomical description of photophores in <i>V. mabahiss</i> can be used for future studies of function and evolution of bioluminescence in Stomiiformes and provides novel information on the structure of photophores in juvenile stages of fishes.</p>

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Morphology of photophores in juvenile Vinciguerria mabahiss (Stomiiformes: Phosichthyidae)

  • 期刊论文

  • 发表日期：

    2025年3月26日

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  • Todd R. Clardy,
  • Jinoy Gopalan,
  • Lotfi Jilani Rabaoui

摘要

The structure of photophores in juvenile stages of the mesopelagic fish Vinciguerria mabahiss (Phosichthyidae), a species endemic to the Red Sea, is described. Each individual V. mabahiss has between 140–144 photophores located on the head, ventral, and lateral body surfaces. Volumetric estimates of photophore size shows that they fall into three size classes. Histological examination of photophores shows that all have a similar composition, regardless of body region. The distribution and structural consistency of photophores in V. mabahiss suggests that they use bioluminescence primarily for counterillumination. This anatomical description of photophores in V. mabahiss can be used for future studies of function and evolution of bioluminescence in Stomiiformes and provides novel information on the structure of photophores in juvenile stages of fishes.