<p>This study focused on life history, feeding habits, general ecology, and natural enemies of <i>Gazalina chrysolopha</i> (Lepidoptera: Notodontidae), the white moth that is associated with Seasonal Hyperacute Panuveitis (SHAPU) in Nepal. The field study was conducted from March 2023 to October 2024 across seven districts (Baglung, Myagdi, Parbat, Kaski, Syangja, Lamjung and Gorkha) of West Nepal. We collected adult moths using light traps and conducted extensive searches for eggs, larvae, and pupae. The highest abundance of adult moths was recorded in the Kaski district from August to September, with notable populations also found in Parbat and Gorkha districts. Eggs were laid on the upper side of the leaf of <i>Alnus nepalensis,</i> with peak laying periods occurring from late August to mid-October. Larvae went through five instar stages and displayed processionary behavior, especially on the trunk of <i>A. nepalensis</i>. The larvae are dependent on <i>A. nepalensis</i> for feeding. The third instar larvae had increased biomass, while the second instar larvae showed the fastest growth rates in laboratory feeding experiments conducted at room temperature (15–18&#xa0;°C). Two parasitoids, <i>Carcelia</i> sp. (Diptera: Tachinidae) and <i>Pimpla</i> sp. (Hymenoptera: Pimplinae), targeted the larvae and pupae, while bats and wall lizards significantly preyed on adult moths. Key ecological factors influencing the distribution and abundance of this species were local temperature, humidity, and the availability of host plants (<i>A. nepalensis</i>). This research provides valuable insights into the life cycle, preferred host plants, and natural enemies of <i>G. chrysolopha</i>, which could inform the development of ecology-based preventive strategies for controlling SHAPU in Nepal.</p>

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Update on the life history of Gazalina chrysolopha (Lepidoptera: Notodontidae) in Nepal, a white moth linked to seasonal hyperacute panuveitis

  • Daya Ram Bhusal,
  • Ranju Kharel Sitaula,
  • Bhawana Pandey,
  • Pratikshya Pathak,
  • Suraj Basnet,
  • Bimal Raj Shrestha,
  • Bhupendra Kumar,
  • Pratap Karki,
  • Sagun Narayan Joshi,
  • Ananda Kumar Sharma,
  • Madan Prasad Upadhyay

摘要

This study focused on life history, feeding habits, general ecology, and natural enemies of Gazalina chrysolopha (Lepidoptera: Notodontidae), the white moth that is associated with Seasonal Hyperacute Panuveitis (SHAPU) in Nepal. The field study was conducted from March 2023 to October 2024 across seven districts (Baglung, Myagdi, Parbat, Kaski, Syangja, Lamjung and Gorkha) of West Nepal. We collected adult moths using light traps and conducted extensive searches for eggs, larvae, and pupae. The highest abundance of adult moths was recorded in the Kaski district from August to September, with notable populations also found in Parbat and Gorkha districts. Eggs were laid on the upper side of the leaf of Alnus nepalensis, with peak laying periods occurring from late August to mid-October. Larvae went through five instar stages and displayed processionary behavior, especially on the trunk of A. nepalensis. The larvae are dependent on A. nepalensis for feeding. The third instar larvae had increased biomass, while the second instar larvae showed the fastest growth rates in laboratory feeding experiments conducted at room temperature (15–18 °C). Two parasitoids, Carcelia sp. (Diptera: Tachinidae) and Pimpla sp. (Hymenoptera: Pimplinae), targeted the larvae and pupae, while bats and wall lizards significantly preyed on adult moths. Key ecological factors influencing the distribution and abundance of this species were local temperature, humidity, and the availability of host plants (A. nepalensis). This research provides valuable insights into the life cycle, preferred host plants, and natural enemies of G. chrysolopha, which could inform the development of ecology-based preventive strategies for controlling SHAPU in Nepal.