Renal handling of water, urea and electrolytes in wild South America fur seal (&lt;i&gt;Arctocephalus australis&lt;/i&gt;)

Bas, Alfredo E Le

doi:10.5597/lajam00026

Cited by 2 publications

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“…This may be due to differences in diet between those species, since fur seals have a protein-rich diet of fish resulting in the elimination of large amounts of urea by their kidneys (Le Bas, 2003), while Amazonian manatees are essentially herbivorous (Best, 1981). and as comparative data that helps to understand the reason of the variation observed exclusively between sexes in juveniles captive manatees.…”

Section: Ureamentioning

confidence: 99%

Urinary parameters of Trichechus inunguis (Mammalia, Sirenia): reference values for the Amazonian Manatee

Pantoja¹,

Rosas²,

Silva³

et al. 2010

Braz. J. Biol.

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The Amazonian manatee, Trichechus inunguis (Natterer 1883) is endemic to the Amazon Basin and is currently considered a vulnerable species. In order to establish normality ranges of urinary parameters to help monitor the health of this species in captivity, chemical urinalyses were performed on twelve males and nine females of various age groups. Urine was collected once a month for twelve months in the tanks just after being drained, by placing stainless steel containers under the genital slit of females and applying abdominal massages to males in order to stimulate urination. Quantitative data of glucose, urea, creatinine, uric acid and amylase levels were obtained using colorimetric spectrophotometry. Dip strips were also useful for routine analyses, despite only providing qualitative results. Normal range to glucose levels, regardless of sex or age class, was 3.0 to 3.6 mg.dL -1 , coinciding with qualitative values of glucose measured by dip strips. Statistical differences observed in some parameter levels suggest that some urine parameters analysed must take into consideration the sex and the age class of the animal studied, being these differences less remarkable in creatinine and amylase levels. To this last one, statistical difference was detected only in the calve's urine (7.0 to 11.5 mg.dL -1 ) compared to other age classes samples (4.1 to 5.3 mg.dL -1 ). The results presented here may be used as comparative data in future research on urinalysis in related species.Keywords: Trichechidae, aquatic mammals, Sirenian, captivity, urinalysis. Parâmetros urinários de Trichechus Inunguis (Mammalia, Sirenia): valores-referência para o peixe-boi da AmazôniaResumo O peixe-boi da Amazônia, Trichechus inunguis (Natterer 1883) é endêmico da Bacia Amazônica e é considerado atualmente como espécie vulnerável. Com o objetivo de estabelecer valores de normalidade para os parâmetros urinários com vistas a ajudar no monitoramento da saúde desta espécie em cativeiro, foi realizada urinálise química em doze machos e nove fêmeas de várias classes etárias. A urina era coletada uma vez por mês, durante doze meses, nos tanques, logo após esvaziamento, colocando-se coletores de aço inoxidável sob o orifício genital das fêmeas e aplicando massagem abdominal nos machos para estimular a micção. Dados quantitativos dos níveis de glicose, ureia, creatinina, ácido úrico e amilase foram obtidos por meio de espectrofotometria colorimétrica. O uso de tiras reativas também foi útil para análises de rotina, apesar de somente fornecerem resultados qualitativos. A faixa de normalidade para os níveis de glicose, independente de classe etária e sexo foi de 3,0 a 3,6 mg.dL -1, coincidindo com os valores qualitativos identificados pelas tiras reativas. Diferenças estatísticas observadas nos níveis de alguns parâmetros analisados sugerem que estes devem levar em consideração o sexo e a classe etária do animal estudado. Estas diferenças foram menos marcantes nos níveis de creatinina e de amilase, sendo que para esta última foi detectada di...

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Section: Ureamentioning

confidence: 99%

Urinary parameters of Trichechus inunguis (Mammalia, Sirenia): reference values for the Amazonian Manatee

Pantoja¹,

Rosas²,

Silva³

et al. 2010

Braz. J. Biol.

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The Digestive System of the Arctocephalus australis in Comparison to the Dog as a Land-Carnivore Model

Martín-Orti

Tostado-Marcos²,

Loureiro³

et al. 2022

Animals

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Marine mammals play a critical ecological role as both predator and prey. They are divided into three groups that share similar adaptations to their aquatic life, but that have very different origins and life patterns: sirenians, pinnipeds, cetaceans. The species object of our interest is the South American fur seal or Arctocephalus australis, a carnivore classified within the group of pinnipeds. The objective of the present study was to evaluate whether the anatomical characteristics of the Arctocephalus australis’ digestive system are similar to that of other land-carnivores or if, on the contrary, this species shows anatomical adaptations related to their life in the ocean. The study was carried out on 11 cadavers of the species Arctocephalus australis, made up of two adults and nine juveniles, by means of the anatomical dissection of their entire isolated digestive system. We demonstrate that, with several exceptions, the anatomical characteristics of the digestive system of the Arctocephalus australis are similar to those in other carnivores. Therefore, our data constitute an important contribution for clinical diagnostic and conservation purposes, for both veterinarians and biologists.

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Renal handling of water, urea and electrolytes in wild South America fur seal (<i>Arctocephalus australis</i>)

Cited by 2 publications

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Urinary parameters of Trichechus inunguis (Mammalia, Sirenia): reference values for the Amazonian Manatee

Urinary parameters of Trichechus inunguis (Mammalia, Sirenia): reference values for the Amazonian Manatee

The Digestive System of the Arctocephalus australis in Comparison to the Dog as a Land-Carnivore Model

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