First live record in Bolivia of the ‘jochi with a tail’ | Primer registro vivo en Bolivia del ‘jochi con cola’

By AGENCIA DE NOTICIAS AMBIENTALES, Erbol:

IN BENI

A beautiful specimen of the “jochi with a tail” survived after being run over on the road to Yucumo in the department of Beni. Its discovery marks the first live record of this large rodent in Bolivia.

Brothers Néstor and Cesar Chambi Calle, upon noticing the animal, turned back on the road to Yucumo and saved its life. Due to its size and seeing that it was injured, they were hesitant to touch it—especially since it was emitting a sound virtually identical to a human baby’s cry. For this reason, they contacted the well-known rescuer from Beni, Marcos Greminger Céspedes, who is also a research professor at the José Ballivián Autonomous University of Beni (UAB), according to testimonies collected by the Environmental News Agency (ANA).

Néstor and César Chambi Calle saved the rodent’s life Photo: Chambi/ANA

They sent a photo of the specimen to Greminger; and due to the location being 4 hours and 30 minutes away (about 280 km) by road, he gave them instructions over the phone on how to use restraint methods to transport it to a safer place. Once this was accomplished, and to prevent the animal from dying, they administered medications and applied veterinary and animal science protocols.

Néstor and Cesar later took it to the checkpoint of the National Service for Agricultural Health and Food Safety (SENASAG). The professionals from this institution kindly transported it to the city of Trinidad, arriving at 7:39 p.m. on May 15, where Greminger received the rodent along with personnel from the Forest and Environmental Protection Police (POFOMA).

Dr. Greminger with a POFOMA officer Photo: Greminger/ANA

In the morning of May 16, at the teaching hospital of the Faculty of Animal Sciences of the Autonomous University of Beni, the animal underwent a full veterinary medical examination to assess its health condition. Then they followed a protocol for feeding and pharmacological treatment to aid in its recovery, with the collaboration of Dr. Mario Justiniano Téllez,” explained the university professor.

First Live Record in Bolivia

“In Bolivia, there are only two previous records: one of a roadkill specimen in La Paz and another from a camera trap photo in Amboró Park,” Greminger explained in an interview with ANA.

“But a live animal had never been recorded in Bolivia—let alone in Beni,” the doctor emphasized, noting that this is a significant scientific contribution.

Biometrics, care, and studies

A biometric analysis determined that the “jochi with a tail,” scientifically known as Dinomys branickii, measured 54 cm in body length, had a 22 cm tail, and weighed 6 kg. It is a growing specimen, which helped it survive the accident. Fortunately, its hind legs were not fractured, although it did lose its front teeth or incisors, which are expected to grow back.

It has since been transferred to the city of Santa Cruz for further studies to safeguard the life of the specimen.

Species and distribution

In Bolivia, this species is known as the pacarana (Dinomys branickii), or “jaipa” or “jochi with a tail.” In other places, it is called “guagua con rabo” or “guagua loba.”

It is a robust-bodied rodent of the neotropical region with a short tail. Its fur is reddish-brown on the back and lighter on the belly.

In Natural History Mammalogy Notes 2024, 10(2), 431; https://doi.org/10.47603/mano.v10n2.431, it is highlighted that its “distribution ranges from Colombia and Venezuela to Brazil, Ecuador, Peru, and Bolivia, at elevations between 200 and 3,200 meters above sea level. In Bolivia, it is known in Andean and adjacent lowland forests from Amboró National Park in Santa Cruz northward. In a mammal survey using camera traps, it was recorded in the protected area of Serranía del Iñao National Park and Integrated Management Area (PN ANMI), in the department of Chuquisaca (~64°0′ W; 19°20′ S). With an effort of 3,147 trap-nights across 26 stations, two pacarana records were obtained, 55 km apart.”

“The first site is in the northeast of the park, at an altitude of 630 m in sub-Andean/inter-Andean riparian forests, and the second in the southwest at 1,353 m in upper sub-Andean subhumid forests. These findings extend the southern limit of its distribution by 170 km and add new Bolivian-Tucuman vegetation types to the knowledge of its habitat,” concludes Natural History Mammalogy.

Scientific article and gratitude

The university professor is awaiting all results in order to write a scientific article, as a contribution to science and in defense of wildlife.

“Finally, I want to highlight the collaboration of the Dean of the Faculty of Animal Sciences, Dr. Francis Ferrier Abidar, for giving us access to the teaching hospital of the Autonomous University of Beni. A special thanks also to the Rector, Ph.D. Jesús Eguez Rivero, for providing full support and logistics for the animal’s well-being,” he concluded.

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