Venom Composition and Diet of the Cantil Agkistrodon bilineatus howardgloydi (Serpentes: Viperidae)
Αποθηκεύτηκε σε:
| Συγγραφείς: | , , , |
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| Μορφή: | artículo original |
| Ημερομηνία έκδοσης: | 1999 |
| Περιγραφή: | The southernmost subspecies of the cantil, Agkistrodon bilineatus howardgloydi, occurs in almost all terrestrial habitats of the sector Santa Rosa National Park, in Guanacaste Conservation Area, Costa Rica. We obtained 21 specimens during several visits to the Park from 1983 to 1996. Neonates were observed only during late May through July, despite searching in other months, suggesting that birth in this subspecies occurs at the beginning of the rainy season. Fecal analyses revealed differences in diet composition between juveniles and adults. Juveniles prey primarily on lizards and various species of frogs, whereas adults, eat rodents. This ontogenetic change in diet does not seem to trigger any corresponding change in venom composition with snake age. Venom of this subspecies is highly toxic (LD50 = 1.25 æg/g), and has elevated hemorrhagic, hemolytic, and myotoxic activities. Extreme deforestation of dry forest habitats in the Pacific lowlands of Central America has made A. bilineatus a rare species over most of its range. Sector Santa Rosa in Costa Rica is the only area within its distributional range where the species still can be regularly observed. |
| Χώρα: | Kérwá |
| Ίδρυμα: | Universidad de Costa Rica |
| Repositorio: | Kérwá |
| OAI Identifier: | oai:kerwa.ucr.ac.cr:10669/29457 |
| Διαθέσιμο Online: | http://www.jstor.org/stable/3672346?seq=1#page_scan_tab_contents https://hdl.handle.net/10669/29457 |
| Λέξη-Κλειδί : | Animals Chordates Vertebrates Reptiles Serpentes Viperidae Agkistrodon Bilineatus Howardgloydi Polyvalent Antivenom Bothrops Asper Terciopelo Neutralization Pathogenesis Myotoxin Tropical Dry Forest Fecal Analysis Diet Composition Lizards Frogs Rodents Snake venom |