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<p>Habitat degradation is a growing concern to the survival of the redside dace [<i>Clinostomus elongatus</i> (Kirtland, 1840)], a minnow species (family: Leuciscidae) native to the Great Lakes of North America and their connecting water systems. Increased water turbidity due to suspended particulates from pollution, urbanized habitat and forest fires is of particular concern. The effect of increased water turbidity on the distribution of olfactory sensory neurons was examined in the present study. A calretinin antibody labelled olfactory sensory neurons lining the lamellae of the peripheral olfactory organ situated within the nasal cavity. An S100 antibody labelled the sparse crypt cell olfactory sensory neurons located on both the olfactory lamellae and in a previously undescribed crypt cell location: the epithelial lining of the nasal cavity. In redside dace held in turbid water for 72&#xa0;h, small patches of olfactory lamellae were devoid of calretinin immunolabelled olfactory sensory neurons. While S100 immunolabelled crypt cell density was unchanged in the lamellar olfactory epithelium, the density of crypt cells increased in adjacent epithelium lining the nasal cavity. These cellular changes in the peripheral olfactory organ under conditions of increased water turbidity may affect important capacities related to survival such as foraging and reproductive activity.</p>

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Olfactory sensory neurons in the peripheral olfactory organ of the redside dace (Leuciscidae) during turbid conditions

  • 期刊论文

  • 发表日期：

    2025年9月21日

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  • Zeenat Aurangzeb,
  • Kimia Jafar Zadeh,
  • Trevor E. Pitcher,
  • Dane Roberts,
  • Barbara Zielinski

摘要

Habitat degradation is a growing concern to the survival of the redside dace [Clinostomus elongatus (Kirtland, 1840)], a minnow species (family: Leuciscidae) native to the Great Lakes of North America and their connecting water systems. Increased water turbidity due to suspended particulates from pollution, urbanized habitat and forest fires is of particular concern. The effect of increased water turbidity on the distribution of olfactory sensory neurons was examined in the present study. A calretinin antibody labelled olfactory sensory neurons lining the lamellae of the peripheral olfactory organ situated within the nasal cavity. An S100 antibody labelled the sparse crypt cell olfactory sensory neurons located on both the olfactory lamellae and in a previously undescribed crypt cell location: the epithelial lining of the nasal cavity. In redside dace held in turbid water for 72 h, small patches of olfactory lamellae were devoid of calretinin immunolabelled olfactory sensory neurons. While S100 immunolabelled crypt cell density was unchanged in the lamellar olfactory epithelium, the density of crypt cells increased in adjacent epithelium lining the nasal cavity. These cellular changes in the peripheral olfactory organ under conditions of increased water turbidity may affect important capacities related to survival such as foraging and reproductive activity.