Branchiurans are parasites from the buccal cavity, gills, skin, and fins of various fish species. The Neotropical region has one of the highest diversity of branchiurans. On Arapaima gigas, only four species of branchiurans have been reported. The present study improves the knowledge on host and geographical range of Dolops striata. Fish were collected from a fish farm in the State of Pará, Brazil. All A. gigas were parasitized by Dolops striata, which were collected from the fins and body surface. This is the first record of D. striata in A. gigas. The high prevalence detected warns the possibility of an increase in the number of D. striata infesting A. gigas, which may cause some problems for fish-farmers.

Branchiurans are parasites from the buccal cavity, gills, skin, and fins of various fish species. The Neotropical region has one of the highest diversity of branchiurans. On Arapaima gigas, only four species of branchiurans have been reported. The present study improves the knowledge on host and geographical range of Dolops striata. Fish were collected from a fish farm in the State of Pará, Brazil. All A. gigas were parasitized by Dolops striata, which were collected from the fins and body surface. This is the first record of D. striata in A. gigas. The high prevalence detected warns the possibility of an increase in the number of D. striata infesting A. gigas, which may cause some problems for fish-farmers.

Dirigido a estudiantes, técnicos, empresarios, investigadores y demás involucrados en la crianza de Arapaima gigas (paiche), esta publicación brinda información sobre las causas de los principales problemas sanitarios y manifestación de enfermedades parasitarias en la crianza de este pez emblemático de la Amazonía. Con estos datos, se puede comprender la biología de los parásitos y evitar malos manejos que pongan en riesgo su cultivo y productividad. La variedad de problemas pueden tener relación con el medio natural, la gestión de factores como temperatura, limpieza, clima, alimentación, instalaciones de crianza. Para enfermedades más problemáticas se recomiendan tratamientos y medicamentos.

The present study reports three cases of problems on farmed Arapaima gigas in the Peruvian and Brazilian Amazon (1st case: Jaundice disease in farmed Arapaima gigas (Schinz, 1822) in Pará, Brazil; 2nd case: Gas bubble disease in farmed Arapaima gigas from the Peruvian amazon and 3rd case: Mortalities caused by fights between sexually mature females of Arapaima gigas. All cases were reported during field expeditions to fish farms. The first case was reported in Para, Brazil and describes a jaundice disease caused by the consumption of contaminated food by micotoxins. The second case was reported in Iquitos, Peru and describes a “gas bubble” disease on young A. gigas caused by inadequate management and lack of acclimation when translated from a fish pond to glass aquaria and wooden boxes with shallow water. The third case is reported in Manaus, Brazil and describes a storage expe...

The present study reports three cases of problems on farmed Arapaima gigas in the Peruvian and Brazilian Amazon (1st case: Jaundice disease in farmed Arapaima gigas (Schinz, 1822) in Pará, Brazil; 2nd case: Gas bubble disease in farmed Arapaima gigas from the Peruvian amazon and 3rd case: Mortalities caused by fights between sexually mature females of Arapaima gigas. All cases were reported during field expeditions to fish farms. The first case was reported in Para, Brazil and describes a jaundice disease caused by the consumption of contaminated food by micotoxins. The second case was reported in Iquitos, Peru and describes a “gas bubble” disease on young A. gigas caused by inadequate management and lack of acclimation when translated from a fish pond to glass aquaria and wooden boxes with shallow water. The third case is reported in Manaus, Brazil and describes a storage expe...

O acantocéfalo Neoechinorhynchus (Neoechinorhynchus) buttnerae Golvan, 1956 é altamente específico para Colossoma macropomum (Cuvier, 1818) e tem sido registrado em diferentes pisciculturas no Brasil. Os danos que pode causar variam desde deficiencias nutricionais, alterações morfológicas, lesões no intestino, até a morte dos peixes. Assim, o presente estudo teve como objetivo registrar a presença deste parasita e avaliar seus índices parasitários. Doze C. macropomum provenientes de um viveiro escavado no município Rio Preto da Eva, no Amazonas, Brasil foram analisados. Dos peixes analisados foram identificados e coletados 4170 indivíduos de N.(N.) buttnerae parasitando o intestino dos peixes com uma prevalência de 100%, intensidade de infecção entre 107 – 921 e, uma intensidade e abundância média de 347,5 ± 239,16. Existiu uma correlaçao positiva entre o tamanho do...

O acantocéfalo Neoechinorhynchus (Neoechinorhynchus) buttnerae Golvan, 1956 é altamente específico para Colossoma macropomum (Cuvier, 1818) e tem sido registrado em diferentes pisciculturas no Brasil. Os danos que pode causar variam desde deficiencias nutricionais, alterações morfológicas, lesões no intestino, até a morte dos peixes. Assim, o presente estudo teve como objetivo registrar a presença deste parasita e avaliar seus índices parasitários. Doze C. macropomum provenientes de um viveiro escavado no município Rio Preto da Eva, no Amazonas, Brasil foram analisados. Dos peixes analisados foram identificados e coletados 4170 indivíduos de N.(N.) buttnerae parasitando o intestino dos peixes com uma prevalência de 100%, intensidade de infecção entre 107 – 921 e, uma intensidade e abundância média de 347,5 ± 239,16. Existiu uma correlaçao positiva entre o tamanho do...