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Introduction <p><?tk 4?>Given the need to identify parasites that may affect commercially important fish, and to contribute to knowledge of the parasitic fauna in Amazonian fish species, the main objective of this research was to study parasites from the gills of <i>Brachyplatystoma tigrinum</i> (Britski, 1981) (Siluriformes: Pimelodidae) what led to the discovery of a new species.</p> Material and Methods <p><?tk 4?>Five <i>B. tigrinum</i> with 20–30 (25&#xa0;cm) were collected in the section between Gran Perú, near the town of Tamishiyacu, in the Amazonas River (3°47′20.70″S 73°15′40.90″W), in Loreto, Peru. The collected fish were transported in boxes with ice to the laboratory for parasitological analyses.</p> Results <p><?tk 4?>One species of the Dactylogyridae was registered: <i>Peruanella jorgepanduroi</i> n. sp. The new species differs from its congener <i>Peruanella madredediosensis</i> Cruces, Santillán, Silvera, Morey, Rubin and Chero, 2024 by the termination of the MCO and the accessory piece, which in the new species have a pointed, almost straight termination, while in <i>P. madredediosensis</i>, both the MCO and the accessory piece bend forward; additionally, the presence of striations on the surface of the shaft and the point of anchors in <i>P. madredediosensis</i> is absent in the new species.</p> Conclusions <p><?tk 4?>The results of this study constitute the second report of a dactylogyrid species parasitizing <i>B. tigrinum</i>, and at the same time, the second species of <i>Peruanella</i> Cruces, Santillán, Silvera, Morey, Rubin and Chero, 2024 described. This increases the knowledge of the biodiversity of monogenoids reported for Peru and the Neotropical region.</p>

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New species of Peruanella (Dactylogyridae) from Brachyplatystoma tigrinum (Osteichthyes: Pimelodidae) from the Amazonas River, Peru

  • 期刊论文

  • 发表日期：

    2025年11月20日

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  • Germán Augusto Murrieta Morey,
  • Hilmer Angelica Dávila Pizango,
  • Roger Fernando Chuquipiondo Sánchez,
  • Carlos Tobias Chuquipiondo Guardia,
  • Jefferson Yunis Aguinaga

摘要

Introduction

Given the need to identify parasites that may affect commercially important fish, and to contribute to knowledge of the parasitic fauna in Amazonian fish species, the main objective of this research was to study parasites from the gills of Brachyplatystoma tigrinum (Britski, 1981) (Siluriformes: Pimelodidae) what led to the discovery of a new species.

Material and Methods

Five B. tigrinum with 20–30 (25 cm) were collected in the section between Gran Perú, near the town of Tamishiyacu, in the Amazonas River (3°47′20.70″S 73°15′40.90″W), in Loreto, Peru. The collected fish were transported in boxes with ice to the laboratory for parasitological analyses.

Results

One species of the Dactylogyridae was registered: Peruanella jorgepanduroi n. sp. The new species differs from its congener Peruanella madredediosensis Cruces, Santillán, Silvera, Morey, Rubin and Chero, 2024 by the termination of the MCO and the accessory piece, which in the new species have a pointed, almost straight termination, while in P. madredediosensis, both the MCO and the accessory piece bend forward; additionally, the presence of striations on the surface of the shaft and the point of anchors in P. madredediosensis is absent in the new species.

Conclusions

The results of this study constitute the second report of a dactylogyrid species parasitizing B. tigrinum, and at the same time, the second species of Peruanella Cruces, Santillán, Silvera, Morey, Rubin and Chero, 2024 described. This increases the knowledge of the biodiversity of monogenoids reported for Peru and the Neotropical region.