Omphalitis, urachocystitis and septicemia by Streptococcus dysgalactiae in a southern right whale calf Eubalaena australis, Brazil

Bianchi, Matheus Viezzer; Ehlers, Luiza Presser; Vargas, Thainã Piccolo; Lopes, Bruna Churocof; Taunde, Paula Augusto; Cecco, Bianca Santana de; Henker, Luan Cleber; Vielmo, Andréia; Lorenzett, Marina Paula; Riboldi, Camila Imperico; Lopes, Cassiane Elisabete; Amorim, Derek Blaese de; Díaz‐Delgado, Josué; Snel, Gustavo Geraldo Medina; Siqueira, Franciele Maboni; Sonne, Luciana

doi:10.3354/dao03293

Cited by 6 publications

(1 citation statement)

References 12 publications

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“…dysgalactiae were obtained from phocid seals (harbor and grey seals) stranded in the North and Baltic Seas between 1995 and 2000 [106]. Between 2005-2011, pathologic and microbiological findings of a southern right whale (Eubalaena australis) calf from Brazil indicated that beta-hemolytic S. dysgalactiae septicemia was responsible for the death of the animal [107].…”

Section: Streptococcus Dysgalactiaementioning

confidence: 99%

Streptococcal Infections in Marine Mammals

et al. 2021

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Marine mammals are sentinels for the marine ecosystem and threatened by numerous factors including infectious diseases. One of the most frequently isolated bacteria are beta-hemolytic streptococci. However, knowledge on ecology and epidemiology of streptococcal species in marine mammals is very limited. This review summarizes published reports on streptococcal species, which have been detected in marine mammals. Furthermore, we discuss streptococcal transmission between and adaptation to their marine mammalian hosts. We conclude that streptococci colonize and/or infect marine mammals very frequently, but in many cases, streptococci isolated from marine mammals have not been further identified. How these bacteria disseminate and adapt to their specific niches can only be speculated due to the lack of respective research. Considering the relevance of pathogenic streptococci for marine mammals as part of the marine ecosystem, it seems that they have been neglected and should receive scientific interest in the future.

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Section: Streptococcus Dysgalactiaementioning

confidence: 99%

Streptococcal Infections in Marine Mammals

et al. 2021

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Infectious Diseases of Marine Mammals as Sentinels of Ecosystem Health in the Neotropics

Cortés-Hinojosa,

Seguel

2024

Ecology of Wildlife Diseases in the Neotropics

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Common core respiratory bacteriome of the blue whaleBalaenoptera musculus, in the Gulf of California

Domínguez-Sánchez

Álvarez-Martínez

Gendron³

et al. 2022

Preprint

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The number of strandings and unusual mortality events that involve marine mammals may have increased, and potential pathogens of the respiratory tract have been found during examination of individuals in many of these events. Given that the core microbiome is key to understand host-bacteria relationships and to identify their relevance for host health, we characterized the core respiratory microbiome of the Eastern North Pacific blue whale,Balaenoptera musculus, using blow samples collected by a small quadracopter drone. 16S rRNA gene high-throughput sequencing revealed 2,732 amplicon sequence variants (ASVs) of which 18 were shared by more than 50% of all blue whales and were considered as the core respiratory microbiome. Sixteen bacterial classes with a relative abundance higher than 0.02% were identified in the blow samples, and eight of these were also found in the seawater samples. Nonetheless, blow samples harboured classes not commonly found in seawater, such asAcidiomicrobia, Actinobacteria, Campylobacteria, Erysipelotrichia, Leptospirae, Mollicutes, andOxyphotobacteria. Only one whale presented a potential pathogen,Mycoplasma, associated with pulmonary pathology in mammals. Ours is the first study to characterize the respiratory microbiome of apparently healthy blue whales. The core microbiome identified here could be used as a baseline for future long-term studies on blue whale health.

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Omphalitis, urachocystitis and septicemia by Streptococcus dysgalactiae in a southern right whale calf Eubalaena australis, Brazil

Cited by 6 publications

References 12 publications

Streptococcal Infections in Marine Mammals

Streptococcal Infections in Marine Mammals

Infectious Diseases of Marine Mammals as Sentinels of Ecosystem Health in the Neotropics

Common core respiratory bacteriome of the blue whaleBalaenoptera musculus, in the Gulf of California

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