Biology and Diseases of Guinea Pigs

Shomer, Nirah H.; Holcombe, Hilda; Harkness, John E.

doi:10.1016/b978-0-12-409527-4.00006-7

Cited by 35 publications

(30 citation statements)

References 164 publications

(166 reference statements)

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“…Por ejemplo, se conoce que los cuilos o conejillos de Indias (Cavia porcellus) tienen una esperanza de vida al nacer de unos 5 años. No obstante, en cautividad pueden vivir en promedio 8 años y se han registrado individuos de una longevidad máxima de 14 años (Shomer, Holcombe y Harkness, 2015). haber llegado a un tope y no seguirá aumentando (Dong, Milholland y Vijg, 2016), la prolongada longevidad actual podría generar una población de Homo sapiens con gran cantidad de individuos postrepreductivos (viejos) que no sobrevivirían naturalmente, por lo tanto, no solamente aumenta la cantidad de individuos de la especie en el planeta (abundancia), sino también el tiempo que cada individuo sobrevive, lo cual genera impactos usualmente negativos sobre los ecosistemas naturales.…”

Section: Esperanza De Vida Y Reproducciónunclassified

“…Cuanto mayor sea la cantidad de descendientes que sobreviven de un individuo, mayor es su éxito reproductivo, sin embargo, debido a limitaciones fisiológicas, anatómicas y de comportamiento existe gran variación en el éxito reproductivo de los individuos de una especie. Retomando el ejemplo de los cuilos, las hembras de esta especie tienen en promedio 3 crías por parto, aunque el rango va desde 1 hasta 8 crías, y pueden tener 3-4 partos por año (Shomer et al, 2015). Para muchas especies este periodo reproductivo es limitado, ya que las hembras tienen un número restringido de óvulos y los machos viejos no pueden competir con los más jóvenes por el acceso a parejas.…”

Section: Competencia Y Otras Interaccionesunclassified

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Ecología del Homo Sapiens y su relación sociocultural

Arroyo

2017

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Homo sapiens ecology and his sociocultural relationship 152 -159 Many individuals of the specie Homo sapiens consider themselves to be separated from other creatures of the Animal Kingdom. This implies that there is a detachment of the relationship between human beings and the natural environment, whose causes are diverse and the consequences usually harmful. This essay reviews ecological human beings characteristics, as for example, number of individuals, their distribution on the planet, life expectancy and the relationship with other species and the environment. Besides, the sociocultural impacts generated from the actions of our specie in the environment. The ecological characteristics of human beings demonstrate that we should not consider ourselves as the most important specie on the planet but rather, as an integral part of the ecosystems. However, the impacts produce by human beings on ecosystems as much as on the abiotic elements as well as biotic ones are usually harmful and they affect all species, including ours. Thus, it is suggested a reevaluation of our status as a specie and our role in the environment.Key Words: Human being, ecology, social interaction, environmental impact. Abstract ResumenMuchos individuos de la especie Homo sapiens consideran estar separada del resto de criaturas del Reino Animal. Esto implica que hay un desligamiento de las relaciones entre el ser humano y el entorno natural, cuyas causas son variadas y sus consecuencias suelen ser nocivas. El presente ensayo repasa las características ecológicas del ser humano, como por ejemplo el número de individuos, su distribución en el planeta, la esperanza de vida y las relaciones con otras especies y el entorno. Además, se analizan las repercusiones socioculturales que generan las acciones de nuestra especie sobre el entorno. Las características ecológicas del ser humano evidencian que no deberíamos considerarnos como la especie más importante del planeta, sino más bien, como integral de los ecosistemas. No obstante, los impactos producidos por el ser humano sobre los ecosistemas, tanto sobre los elementos abióticos como los bióticos, suelen ser nocivos y afectan a todas las especies, incluida la nuestra. Por lo tanto, se sugiere una reevaluación de nuestro estatus como especie y nuestra función en el ambiente.

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Section: Esperanza De Vida Y Reproducciónunclassified

Section: Competencia Y Otras Interaccionesunclassified

Ecología del Homo Sapiens y su relación sociocultural

Arroyo

2017

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“…6 Guinea pigs have been used frequently in research for more than 200 y and have contributed to a wide variety of studies in areas including anaphylaxis, asthma, immunology, otology, and nutritional disease. 9 Currently guinea pigs are popular pets and are common in zoological collections in many countries. Neoplasia is relatively common in guinea pigs, especially in those older than 3 y.…”

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“…Neoplasia is relatively common in guinea pigs, especially in those older than 3 y. 9 In this species, tumors of the hematopoietic system are the most common, followed by those of the respiratory system, integument, reproductive tract, mammary glands, cardiovascular system, and endocrine glands. 1,9 Over the last decade, thyroid tumors in guinea pigs have been reported with increasing frequency.…”

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confidence: 99%

“…9 In this species, tumors of the hematopoietic system are the most common, followed by those of the respiratory system, integument, reproductive tract, mammary glands, cardiovascular system, and endocrine glands. 1,9 Over the last decade, thyroid tumors in guinea pigs have been reported with increasing frequency. 4 In particular, one report provided morphologic and immunohistochemical characterizations of thyroid tumors from 19 cases.…”

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Thyroid Adenoma and Ectopic Thyroid Carcinoma in a Guinea Pig (Cavia porcellus)

Kondo

Koizumi²,

Yamamoto

et al. 2018

comp med

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A 56-mo-old male guinea pig (Cavia porcellus) presented with gradual weight loss from 757 to 691 g during the preceding month. Cardiac-specific diagnostics detected decreased cardiac contractility, moderate cardiomegaly, pericardial effusion, and pulmonary edema. At 1 mo after presentation, the guinea pig died while under treatment. Necropsy revealed a 5 × 3 × 3-mm, tan, smooth nodule on the base of the heart. On histology, the nodule contained moderately cellular neoplastic tissue comprising cuboidal cells arranged in variably sized follicles. Immunohistochemically, the neoplastic cells were positive for thyroglobulin and thyroid transcription factor 1, consistent with ectopic thyroid carcinoma. Other significant histologic lesions included thyroid adenoma of the right thyroid gland, myocardial hypertrophy and degeneration, suppurative bronchopneumonia, and centrilobular hepatocellular degeneration. Although serum total thyroxine concentration was not evaluated, we considered that the tumors in this case were functional because concurrent lesions related to hyperthyroidism were present. In guinea pigs, reports of endocrine tumors, including thyroid tumors, have been increasing. To our knowledge, the current report represents the first documentation of ectopic thyroid carcinoma in this species.

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Oxygen Therapy

Gardhouse

2021

Exotic Animal Emergency and Critical Care Medicine

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Biology and Diseases of Guinea Pigs

Cited by 35 publications

References 164 publications

Ecología del Homo Sapiens y su relación sociocultural

Ecología del Homo Sapiens y su relación sociocultural

Thyroid Adenoma and Ectopic Thyroid Carcinoma in a Guinea Pig (Cavia porcellus)

Oxygen Therapy

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