Molecular Identification of Plerocercoids of Clistobothrium montaukensis (Cestoda: Phyllobothriidea) Parasitizing the King of Herrings Regalecus glesne

Horacio Lozano-Cobo, María del Carmen Gómez del Prado-Rosas, Claudia A. Silva-Segundo, Alejandro Oceguera-Figueroa, Jaime Gómez-Gutiérrez

Research output: Contribution to journalArticlepeer-review

Abstract

Purpose: Endo-parasites of the bathypelagic king of herrings Regalecus glesne and oarfish Regalecus russelii are only known from few specimens opportunistically examined. As a consequence, there are few records of parasites from either Regalecus species. We report plerocercoid larvae of phyllobothriidean cestodes parasitizing an adult R. glesne stranded in Bahía de La Paz, Baja California Sur, Mexico. Methods: Sixty-three plerocercoids were obtained from the intestine of R. glesne and characterized using morphological and molecular methods (nuclear 28S rDNA and mitochondrial cytochrome c oxidase I gene sequences). Results: Following the morphological diagnostic criteria of scolex and muscle bands in the strobila, plerocercoids specimens were preliminary assigned to the genus Clistobothrium. Mitochondrial and nuclear DNA sequences indicate these plerocercoids correspond to Clistobothrium montaukensis Ruhnke, 1993. Conclusion: Regalecus glesne is a new host known for C. montaukensis and this report is a new geographical record of C. montaukensis parasitizing species of the genus Regalecus previously known only from California and Florida, USA.

Original languageEnglish
JournalActa Parasitologica
DOIs
StateAccepted/In press - 2021

Keywords

  • 28S rDNA
  • Cestoda
  • Cox1
  • Gulf of California
  • Oarfish
  • Regalecidae

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