Rodrigo Roveri Scartozzoni's research while affiliated with Instituto Vital Brazil and other places

Publications (10)

Article
Viviparity has evolved at least 115 times in squamates and these multiple origins have raised a series of functional and evolutionary questions. Ideally, testing evolutionary hypotheses on squamate viviparity requires focusing on closely related taxa that exhibit both reproductive modes. South American water snakes of the tribe Hydropsini (genera H...
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We investigated the gross anatomy, histology and ultrastructure of Duvernoy's glands and scanning electron microscopy of maxillary teeth of Helicops modestus, as well as its prey-handling behavior in laboratory. We later compared this histology with other species of Hydropsini. Duvernoy's glands are located in the post-ocular region, immediately be...
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We reviewed the geographical distribution of Pseudoeryx plicatilis in South America, and present new records in Bolivia and from nine Brazilian states. This is the first record of P. plicatilis in the states of Acre, Amapá, and Roraima, northern region of Brazil. The presence of P. plicatilis in the municipality of Alta Floresta expands its distrib...
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Aspects of natural history of the vine snake Oxybelis fulgidus from the northern region of Brazil were inferred based on the analysis of 106 preserved specimens (55 males and 51 females), and from a review of records in the published literature. Males mature at smaller size than females. Differences in body length and shape were also found among ad...
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SNAKE HUSBANDRY IN INSTITUTO BUTANTAN: II - LONGEVITY OF GENERA Bothrops, Crotalus and Lachesis. Snake husbandry is a determinant factor in the efficiency of antivenom production, as well as in the supply of venom for institutional research and in other purposes. In this work we analyse data obtained in the bioterium of Laboratório de Herpetologia...
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SNAKE HUSBANDRY IN INSTITUTO BUTANTAN: I - LONGEVITY OF GENUS Micrurus. Snake husbandry is a determinant factor in the efficiency of antivenom production. In this work we analyse data obtained from the bioterium of Laboratório de Herpetologia, Instituto Butantan concerning elapid snake (n = 3509) genus Micrurus. Longevity and venom production throu...
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Resumo: A manutenção de serpentes em cativeiro, particularmente as venenosas, tem papel importante na eficiência da produção de imunobiológicos, bem como responde pelo veneno destinado à pesquisa institucional e externa. Este trabalho descreve e analisa dados de 28 anos (1970 a 1998) de cativeiro intensivo de serpentes Viperidae (n = 4565) dos gêne...
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The feeding behavior of Boa constrictor, Epicrates cenchria, and Corallus hortulanus (Snakes, Boidae) is here described and compared with discrepant data from the literature. Records were obtained according to the "all occurrence" and "sequence sampling" methods. Behavior was divided into four phases: (i) orientation towards prey, approach and stri...

Citations

... Other color traits act more strongly on small individuals, as smaller rings increase the effect of blurring with the background for visually oriented predators (Pough 1976). Helicops danieli and many other aquatic snakes have bright aposematic colors that are concentrated on the belly (Batista et al. 2020), these characteristics likely act as a defense mechanism against predation by carnivorous fishes in aquatic environments (Batista et al. 2020). Thus, we hypothesize that the presence of the white nuchal collar in H. danieli, together with bright ventral coloration, may be driven by selective forces, thereby reinforcing aposematic/disruptive non-conflicting strategies (see Titcomb et al. 2014) against terrestrial and visually oriented aquatic predators. ...
... In this work, we describe the venom gland of G. ch. chilensis with a histological organization similar to that described in other rear-fanged snakes such as Philodryas olfersii [50], Helicops modestus [51], Erythrolamprus aesculapii [12], Leptophis ahaetulla marginatus [11], and Leptodeira annulata [52]. The venom gland of rear-fanged snakes can be classified into four histologically different types [53]: (1) the presence of mucous cells in the supralabial region without the venom gland; (2) predominant serous cells with mucous intercalate in the venom gland (mixed venom gland or seromucous); (3) predominant mucous with limited serous cells in gland; and (4) exclusively serous cells in the gland. ...
... Squamate reptiles, on the other hand, exhibit all major modes of sexual reproduction known from amniotes-oviparity, viviparity, and oviviviparity-and also reproduce asexually via various modes of parthenogenesis ( Figure 1) [11,53,54]. Sexual reproductive mode can turnover rapidly in squamate reptiles [55] and numerous squamate species are capable of reproduction via both oviparity and viviparity (e.g., Zootoca vivipara, Lerista bougainvillii, and Saiphos equalis; see [56][57][58][59][60][61]), a situation that has driven the hypothesis that uterine retention is selectively advantageous in cooler environments [62,63]. Squamates can also reproduce via obligate parthenogenesis (Figure 1), resulting in species or populations composed entirely of females, including in certain geckos (Lepidodactylus lugubris [64] and Hemidactylus garnotii [65]), the well-known 'flowerpot snake' (Indotyphlops braminus [66]), and several hybrid species from the genera Cnemidophorus/Aspidoscelis [67] and Darevskia [68]. ...
... In view of the previous associations of the Tocantins-Araguaia populations with the name He. leopardinus (e.g., Brandão & Pérez Jr. 2001;Scartozzoni 2006), the attribution of the former to a new species requires reference to the type material of the latter. Schlegel (1837) described Homalopsis leopardinus based on two specimens with unknown localities [RMNH 1158, a male with SVL 480 mm, and RMNH 1159, a female with SVL = 600 mm; see Wallach et al. (2014: 322)], presently deposited in the Naturalis Biodiversity Center, Leiden, Netherlands. ...
... In the Pantanal floodplains several species of water snakes occur, including the rare Pseudoeryx plicatilis (Strüssmann and Sazima, 1993;Marques et al., 2005). This species is widespread in South America, occurring from southwestern Paraguay, north of Argentina and east of Bolivia, through the Humid Chaco Region, and along the Midwestern and North of Brazil, Peru, Colombia, Venezuela and Guiana Shield in the Amazon basin (Scartozzoni et al., 2010). Despite its wide distribution, there are few observations on its natural history (Schargel et al., 2007;Kaefer and Montanarin, 2010). ...
... The captive group had been collected from (Grego et al., 2021). The only exceptions were a specimen of B. atrox and B. moojeni that were kept in wooden cages (56 x 37 x 24 cm) with a glass door (Costa et al., 2005). Rooms temperatures were maintained between 23-26 °C with relative humidity around 60 % monitored with thermo-hygrometers, and a light/dark cycle of 12 h (more details in Grego et al., 2021). ...
... We surveyed 25 variable-size islands and four continuous forest sites within the Balbina Hydroelectric Reservoir and its immediate surroundings in Central Brazilian Amazonia. By the time sampling was carried out, islands had been isolated for 27 years which, given the longevity of relatively small bodied-size snakes (e.g., six to 10 years for Colubridae and Dipsadidae, Ernst & Zug, 1996; $3 years for Elapidae, Oliveira et al., 2005), is enough to allow up to nine generations to elapse. We therefore assumed that snake assemblages surveyed in this study had reached an extinction-colonization equilibrium. ...
... This species is active during daytime and at night and presents terrestrial and semi arboreal behaviour, occupying a variety of habitats (Martins & Oliveira, 1998;Sawaya et al., 2008;Marques et al., 2015). It is a largebodied non-venomous snake with aglyphous dentition that (Greene, 1983;Scartozzoni & Molina, 2004;Cabral et al., 2019). Although B. constrictor is an abundant species, there are few specimens deposited in scientific collections, probably due to its large size and storage difficulties (Pinto-Coelho et al., 2020). ...
... Sus hábitos son principalmente arbóreos (Natera et al., 2015). Con frecuencia se alimenta de saurios diurnos y terrestres, sin embargo, su dieta posee una amplia variedad de aves que caza y consume mientras se suspende entre la vegetación, en especial las hembras (Scartozzoni et al., 2009;Almeida et al., 2020). A pesar de no ser venenosa, se conoce de un caso de envenenamiento no letal (Silva et al., 2019). ...