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No Brasil, o lagarto brasileiro teiú foi o primeiro réptil que produz calor próprio e cientistas não entendem como isso aconteceu.
Os animais ectotérmicos, como os répteis, anfíbios e peixes, dependem do calor do ambiente para regular sua temperatura corporal. No entanto, o teiú, encontrado no Brasil, é uma exceção a essa regra.
Durante seu período reprodutivo, ele consegue se aquecer com o calor do [...]
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O teiú Salvator marianae ), lagarto que pode ser encontrado em todas as regiões do Brasil, se tornou destaque entre os cientistas nas últimas semanas. Um grupo de pesquisadores publicou, com apoio da Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP), um estudo sobre o animal no qual revelou que a espécie é capaz de produzir calor o suficiente para se aquecer sozinho. A descoberta foi registrada na revista Acta [...]
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A new study has uncovered the physiological mechanism behind the ability of Salvator merianae, the Black and white tegu lizard, to raise its body temperature independently during the mating season.
This discovery raises questions about long-held beliefs regarding reptilian thermoregulation and the distinctions between cold-blooded and warm-blooded animals.
Unraveling the Tegu's Thermal Adaptation
Researchers from São Paulo State University's School of Agrarian and [...]
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A group of scientists has revealed the mechanism whereby Salvator merianae—the black and white tegu, also called the Argentine giant tegu—is able to keep warm by raising its own body temperature during the reproductive season even while it is in a dark burrow. This had never been observed before in reptiles.
An article on the study is published in Acta Physiologica.
“Generally speaking, only birds and mammals are considered endotherms, which can keep warm even in a [...]
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A group of scientists has revealed the mechanism whereby Salvator merianae—the black and white tegu, also called the Argentine giant tegu—is able to keep warm by raising its own body temperature during the reproductive season even while it is in a dark burrow. This had never been observed before in reptiles.
An article on the study is published in Acta Physiologica
"Generally speaking, only birds and mammals are considered endotherms, which can keep warm even in a cooling [...]
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A group of scientists has revealed the mechanism whereby Salvator merianae—the black and white tegu, also called the Argentine giant tegu—is able to keep warm by raising its own body temperature during the reproductive season even while it is in a dark burrow. This had never been observed before in reptiles.
An article on the study is published in Acta Physiologica
"Generally speaking, only birds and mammals are considered endotherms, which can keep warm even in a cooling [...]
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A group of scientists supported by FAPESP has revealed the mechanism whereby Salvator merianae – the Black and white tegu, also called the Argentine giant tegu – is able to keep warm by raising its own body temperature during the reproductive season even while it is in a dark burrow. This had never been observed before in reptiles. An article on the study is published in Acta Physiologica, which is owned by the Scandinavian Physiological Society.
"Generally [...]
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A group of scientists has revealed the mechanism whereby Salvator merianae—the black and white tegu, also called the Argentine giant tegu—is able to keep warm by raising its own body temperature during the reproductive season even while it is in a dark burrow. This had never been observed before in reptiles.
Source: phys.org
Read Entire Article Source
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In 2016, researchers supported by FAPESP had shown that tegu lizards reach higher temperatures than the burrows they inhabit in spring. This new study has found a physiological explanation for the phenomenon. Credit: Livia Saccani Hervas
A group of scientists has revealed the mechanism whereby Salvator merianae—the black and white tegu, also called the Argentine giant tegu—is able to keep warm by raising its own body temperature during the reproductive season even while it is in [...]
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Infofix
- Publicado em 06 agosto 2024
Durante o período reprodutivo, espécie sul-americana passa a regular a temperatura corporal sem depender do ambiente externo e sem tremer. Com base em experimentos, pesquisadores da Unesp atribuíram fenômeno a aumento da quantidade e da atividade de mitocôndrias no músculo esquelético
Texto: André Julião | Agência FAPESP
Um grupo de cientistas apoiado pela FAPESP conseguiu desvendar um mecanismo que permite ao teiú [...]
