Publications by authors named "A Colom-Rivero"
Cuvier's beaked whale (CBW) (Ziphius cavirostris) is a cosmopolitan species known for its remarkable diving capabilities and is widely distributed across most seas and oceans, including the waters surrounding the Canary Islands. This species frequently exhibits a high prevalence of parasitism by the nematode Crassicauda spp., which affects the kidney, urinary tract, and arterial walls via larval migration, and is considered one of the primary natural causes of mortality among CBWs in the Canary archipelago.
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- A study examined mesenteric lymph nodes and ileocecal valves from 105 goats (61 non-vaccinated, 44 vaccinated) with a history of paratuberculosis (PTB) to assess the presence of subclinical infections and lesions.
- Results revealed that 39% of the goats had gross PTB-compatible lesions, with a higher prevalence in non-vaccinated goats compared to vaccinated ones.
- The research highlighted the importance of using both histopathological assessments and laboratory techniques to accurately diagnose PTB, but calls for further research to improve sampling methods for subclinical cases in goats.
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- Bird collisions with overhead lines, like power and phone lines, are contributing to the decline of various bird species, particularly the endangered Canarian houbara bustard.
- A necropsy study of nine houbara bustards that collided with these lines showed that trauma was the cause of death for all, with common severe injuries including fractures and hemorrhages.
- The study found that many birds endure the initial impact and may survive for a short period (minutes to hours) before succumbing to their injuries, suggesting that post-trauma analysis techniques could help determine the timeline from injury to death.
In Chile, since January 2023, a sudden and pronounced increase in strandings and mortality has been observed among South American (SA) sea lions (Otaria flavescens), prompting significant concern. Simultaneously, an outbreak of highly pathogenic avian influenza H5N1 (HPAIV H5N1) in avian species has emerged since December 2022. To investigate the cause of this unexpected mortality, we conducted a comprehensive epidemiological and pathologic study.
View Article and Find Full Text PDFFifty-five skin lesions from 31 stranded cetaceans along the Canary coasts (2011-2021) were submitted to macroscopic, histological, and molecular analyses to confirm infection by cetacean poxvirus, herpesvirus and cetacean morbillivirus. They were macroscopically categorized into eight categories with respective subcategories according to their color, shape, size, and consistency. Cetacean poxvirus was detected in 54.
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