Fig 3 - uploaded by Víctor Vásquez Cruz
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A comparison of individual dorsal scales from Atropoides nummifer (A), a scale found in the excreta (B) and one from Bothrops asper (C). The similarity of scales A and B confirms the identification of the ingested snake as A. nummifer, and the event as a case of cannibalism.
Source publication
We encountered what appeared to be an adult male Atropoides nummifer (total length ~720 mm; Fig. 1) that soon after defecated. The analysis that revealed the remains of ventral scales, dorsal scales, and cranial bones (quadrate, maxilla, and fangs) of a snake of the family Viperidae. The comparison of individual dorsal scales, confirms the identifi...
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Citations
... Atropoides nummifer es una especie mediana, alcanza una longitud total de 720 mm (Vásquez-Cruz et al., 2017). Se distribuye en México, en los estados de Querétaro, San Luis Potosí, Hidalgo, Puebla, Veracruz y Oaxaca (Campbell y Lamar, 2004;López et al., 2006), habita en bosque mesófilo de montaña, bosque tropical, bosque de encino y cultivos, en un intervalo altitudinal de 670-1800 m (Heimes, 2016). ...
... La dieta natural documentada de los miembros de este género consiste en ortópteros, cangrejos, lagartijas y roedores (Campbell y Lamar, 2004;McCranie, 2011) y Pérez-Higareda et al., (2007 menciona Lithobates sp como parte de la dieta de Atropoides olmec en cautividad. Además, existe reporte de canibalismo en A. nummifer (Vásquez-Cruz et al., 2017). ...
La serpiente tepoxo Atropoides nummifer, es una especie endémica a México, considerada como amenazada. Se estudió el ciclo reproductivo de la especie en cautiverio como estrategia de conservación ex situ. A. nummifer es una especie de reproducción estacional, las cópulas ocurren en el mes de enero y los partos en junio, con una gestación de 186 días. El promedio de neonatos fue 6.8 (5-9) el más bajo comparado con otros miembros del género. La longitud total de los neonatos se extendió de 187 mm a 220 mm y peso de 9.3 a 11 g. Los neonatos son sumamente nerviosos, suelen morderse y llegan al canibalismo. Aquí presentamos los primeros datos sobre el comportamiento y éxito reproductivo de Atropoides nummifer.
... The two records of Sauromalus hispidus from Rasa Island are previously reported in literature (Velarde et al., 2008;Reynoso et al., 2017). The possibility of a small, recently established population of Sauromalus on Rasa Island has stimulated the scientific interest to investigate further. ...
... Atropoides nummifer es una especie mediana, alcanza una longitud total de 720 mm (Vásquez-Cruz et al., 2017). Se distribuye en México, en los estados de Querétaro, San Luis Potosí, Hidalgo, Puebla, Veracruz y Oaxaca (Campbell y Lamar, 2004;López et al., 2006), habita en bosque mesófilo de montaña, bosque tropical, bosque de encino y cultivos, en un intervalo altitudinal de 670-1800 m . ...
... La dieta natural documentada de los miembros de este género consiste en ortópteros, cangrejos, lagartijas y roedores (Campbell y Lamar, 2004;McCranie, 2011) y Pérez-Higareda et al., (2007 menciona Lithobates sp como parte de la dieta de Atropoides olmec en cautividad. Además, existe reporte de canibalismo en A. nummifer (Vásquez-Cruz et al., 2017). ...
The results of a herpetofaunal inventory made in Aluxes Ecoparque Palenque in the months of January to November 2017, are presented, with 16 sampling events were carried out. The Inspection technique by visual encounter was used for a limited time (2 hours), on the main roads and paths in Aluxes Ecoparque Palenque. Having a results, a 298 individuals and a richness of 43 species was recorded, consisting of 16 amphibian species (37%) and 27 reptiles (63%). The accumulation curve of amphibian and reptile species indicates that the inventory is almost complete. Of the recorded species of amphibians and reptiles 12 are in the irrigation categories according to NOM-059-SEMARNAT-2010.
The viperid genus Metlapilcoatlus (previously Atropoides) is represented In Mexico by four species: M. olmec, M. mexicanus, M. occidus, and M. nummifer. To date, no studies on their venoms have been reported. Here, we comparatively characterized the venom from M. nummifer neonates (≤8 months of age), young adults (18 months) and adults (≥24 months). We performed biological and enzymatic activities, as well as electrophoretic and RP-HPLC profiling combined with proteomic assignment of major fractions. Venoms from neonates and adults differed in their electrophoretic and chromatographic profiles, indicating that an ontogenetic compositional shift occurs in this species. Protein family assignments showed that neonates produce a venom rich in Snake Venom Metalloproteinases (SVMPs) and Snake Venom Serine Proteases (SVSPs), but lacking Phospholipases A2 (PLA2s). In contrast, adults express abundant venom PLA2s, and lower molecular weight proteins, as evidenced by SDS-PAGE. Functionally, neonate venom did not display PLA2 or procoagulant activities, whereas adult venom did. Hemorrhagic activity was present in both neonate and adult venoms, with similar potencies. Finally, it is of considerable concern that the lethal activity of neither neonate nor adult venoms was neutralized by two therapeutic antivenoms produced in Mexico.
