Search Results - "Fontana, Pedro"
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Life history of frogs of the Brazilian semi‐arid (Caatinga), with emphasis in aestivation
Published in Acta zoologica (Stockholm) (01-07-2020)“…The semi‐arid region (Caatinga), that corresponds to 18.26% (1,540,000 km2) of Brazil, occupies most the northeast region. Rainfall is irregular and…”
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Milk provisioning in oviparous caecilian amphibians
Published in Science (American Association for the Advancement of Science) (08-03-2024)“…Among vertebrates, the yolk is commonly the only form of nutritional investment offered by the female to the embryo. Some species, however, have developed…”
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Differences between poison and venom: An attempt at an integrative biological approach
Published in Acta zoologica (Stockholm) (01-10-2021)“…We discuss the use of the terms venom and poison, in the context of integrative biology, with particular emphasis on behaviour and natural history. Our purpose…”
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Skin and poison glands in toads (Rhinella) and their role in defence and water balance
Published in Acta zoologica (Stockholm) (01-01-2022)“…Toads are considered poisonous animals since they have a passive mode of defence relying on cutaneous poison glands, differently from venomous animals who can…”
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Peering into the unknown world of amphisbaenians (Squamata, Amphisbaenia): A summary of the life history of Amphisbaena alba
Published in Acta zoologica (Stockholm) (01-10-2024)“…Capturing data on the life of fossorial vertebrates is difficult since access to the subterranean environment is made unfeasible by its density and opacity…”
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Venomous Frogs Use Heads as Weapons
Published in Current biology (17-08-2015)“…Venomous animals have toxins associated with delivery mechanisms that can introduce the toxins into another animal [1]. Although most amphibian species produce…”
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Parotoid, radial, and tibial macroglands of the frog Odontophrynus cultripes: Differences and similarities with toads
Published in Toxicon (Oxford) (01-04-2017)“…Anuran integument is characterized by the presence of glands, some of which are responsible for toxin production. In some species these glands accumulate in…”
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Passive and active defense in toads: The parotoid macroglands in Rhinella marina and Rhaebo guttatus
Published in Journal of experimental zoology. Part A, Ecological and integrative physiology (01-02-2014)“…ABSTRACT Amphibians have many skin poison glands used in passive defense, in which the aggressor causes its own poisoning when biting prey. In some amphibians…”
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Identifying the Frequency and Connectivity Dynamics of the US Economy
Published in Economies (01-06-2024)“…This paper seeks to investigate the connectivity of the US economy through the dynamics of the transmission of volatility in sectoral indices. For this, we use…”
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Structural cutaneous adaptations for defense in toad (Rhinella icterica) parotoid macroglands
Published in Toxicon (Oxford) (01-10-2017)“…Toads have a pair of glandular accumulations on each side of the dorsal region of the head known as parotoid macroglands. These macroglands consist of…”
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Morphology of the arthrodial membrane gland in a Neotropical harvester (Arachnida: Opiliones)
Published in Zoologia (Curitiba, Brazil) (2023)“…We describe a gland in the arthrodial membrane of the coxa-trochanter articulation in the fourth pair of legs in the Neotropical harvester Mischonyx squalidus…”
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Life history and reproduction of the neotropical caecilian Siphonops annulatus (Amphibia, Gymnophiona, Siphonopidae), with special emphasis on parental care
Published in Acta zoologica (Stockholm) (01-07-2019)“…Due to their mainly fossorial way of life, caecilian amphibians are the least known order of terrestrial vertebrates. Here, we present new observations on the…”
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Functional assessment of toad parotoid macroglands: A study based on poison replacement after mechanical compression
Published in Toxicon (Oxford) (01-09-2014)“…Toads have a pair of parotoid macroglands behind the eyes that secrete poison used in passive defence against predators. These macroglands are composed of…”
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Distribution of major toxins in Rhinella marina parotoid macroglands using Desorption-Electrospray-Ionization mass spectrometry imaging (DESI-MSI)
Published in Toxicon X (01-06-2020)“…Amphibian cutaneous glands secrete toxins used in different vital functions including passive defense. Through Desorption Electrospray Ionization-Imaging we…”
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Noninvasive mechanical ventilation assistance in amyotrophic lateral sclerosis: a systematic review
Published in São Paulo medical journal (01-01-2024)“…Respiratory failure is the most common cause of death in patients with amyotrophic lateral sclerosis (ALS), and morbidity is related to poor quality of life…”
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Burnout syndrome, extracurricular activities and social support among Brazilian internship medical students: a cross-sectional analysis
Published in BMC medical education (18-03-2020)“…Burnout syndrome (BS) is highly prevalent among medical students and is associated with lower empathy and worsening of medical students ́ mental health. The…”
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Morphological and biochemical characterization of the cutaneous poison glands in toads ( Rhinella marina group) from different environments
Published in Frontiers in zoology (23-11-2018)“…Amphibian defence against predators and microorganisms is directly related to cutaneous glands that produce a huge number of different toxins. These glands are…”
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Skin gland concentrations adapted to different evolutionary pressures in the head and posterior regions of the caecilian Siphonops annulatus
Published in Scientific reports (23-02-2018)“…Amphibian skin is rich in mucous glands and poison glands, secreting substances important for gas exchange and playing a fundamental role in chemical defense…”
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Morphology of the Cutaneous Poison and Mucous Glands in Amphibians with Particular Emphasis on Caecilians ( Siphonops annulatus )
Published in Toxins (04-11-2021)“…Caecilians (order Gymnophiona) are apodan, snake-like amphibians, usually with fossorial habits, constituting one of the most unknown groups of terrestrial…”
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Reproductive behaviour, cutaneous morphology, and skin secretion analysis in the anuran Dermatonotus muelleri
Published in iScience (15-04-2022)“…Despite the common poison and mucous glands, some amphibian groups have differentiated glands associated with reproduction and usually present on the male…”
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