Amphibians

Forzán, María J.; Horney, Barbara S.

doi:10.1002/9781119108610.ch19

Cited by 2 publications

(5 citation statements)

References 32 publications

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“…Hemoparasite structures were identified according to their morphologic characteristics following previous reports on hemoparasites in amphibians 1,5,6,11,13 . The identified parasite structures were counted from 100 fields at 40× magnification to obtain the intensity of infestation, and photographic records were obtained (Leica DM750).…”

Section: Methodsmentioning

confidence: 99%

“…Amphibians are one of the vertebrate taxa most threatened with extinction due to their biological characteristics and life cycle. In addition, they may serve as important sentinels of ecological health 1 . The evaluation of amphibian health could help in the detection of environmental toxins and contamination 2,3 ; however, there are other factors that could affect the health status of wild amphibians, such as the presence of infectious agents.…”

Section: Introductionmentioning

confidence: 99%

“…The evaluation of amphibian health could help in the detection of environmental toxins and contamination 2,3 ; however, there are other factors that could affect the health status of wild amphibians, such as the presence of infectious agents. Despite the information on the clinical pathology of wildlife, amphibian hematology profiles are not always available, particularly from free‐ranging animals 1 . Most hematologic profiles are primarily obtained from captive animals 1,2 .…”

Section: Introductionmentioning

confidence: 99%

“…Despite the information on the clinical pathology of wildlife, amphibian hematology profiles are not always available, particularly from free‐ranging animals 1 . Most hematologic profiles are primarily obtained from captive animals 1,2 . However, these profiles are not sufficiently reliable because of the small sample size and differences in biological (ie, age or sex) or environmental (ie, captivity or climate) conditions 1,2,4‐7 …”

Section: Introductionmentioning

confidence: 99%

“…Most hematologic profiles are primarily obtained from captive animals 1,2 . However, these profiles are not sufficiently reliable because of the small sample size and differences in biological (ie, age or sex) or environmental (ie, captivity or climate) conditions 1,2,4‐7 …”

Section: Introductionmentioning

confidence: 99%

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Hematologic parameters and the effect of hemoparasites of wild anurans in Northern Sinaloa, Mexico

Delgado

Zavala‐Norzagaray

Espinoza-Romo

et al. 2023

Veterinary Clinical Pathol

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Background: Few hematologic profiles for free-ranging amphibians are available.Hematologic evaluation is a useful tool for determining the health of amphibian populations and providing further knowledge for conservation actions.Objectives: Hematologic variables and the presence and effect of hemoparasites in anuran species were evaluated in Northern Sinaloa, Mexico.Methods: Blood samples were collected from wild anurans of eight species to perform blood cell counts, leukocyte differential counts, and serum protein concentrations using manual methods and refractometry. In addition, morphologic identification and quantification of the hemoparasites were performed on blood smears. Results: Differences were observed by sex, age, and season for the hematologic values of Incilius alvarius (n = 23), Incilius mazatlanensis (n = 46), Rhinella horribilis (n = 64), Leptodactylus melanonotus (n = 46), Lithobates forreri (n = 135), Lithobates catesbeianus (n = 20), Smilisca fodiens (n = 42), and Scaphiopus couchii (n = 7). Intra-and extra-erythrocytic hemoparasites were found in 56.2% of amphibian hosts; the hemoparasite infection of R. horribilis and L. melanonotus was higher in the dry season,showing increases in erythroplastids and monocytes. For L. forreri, males were more infected than females, and increases in leukocytes were associated with infections of different types of hemoparasites species.Conclusions: Hematologic values, hemoparasite prevalence, and the response to hemoparasite infection vary among amphibian species, sex, and age, as well as on season and hemoparasite type. This highlights the importance of hematologic evaluations in wild amphibian populations to determine the subclinical effects of hemoparasite infections.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%