Reproductive potential and cycles in female Crotalus atrox
from northwestern Texas.
Food habits of the western diamond back rattlesnake, Crotalus atrox
, in Texas (Viperidae).
Species Plant communities Status TTS NG IG AS Amphibia Anura Lithobates berlandieri X Pr Reptilia Crocodylia Crocodylus morelett X X Pr Sauria Sceloporus olivaceu X X X SE Plestiodon tetragra X X X SE Aspidoscelis scalar X X X X SE Serpentes Coluber schotti X SE Drymarchon melanuru X X SE Pantherophis emoryi X X SE Tantilla atriceps X A Thamnophis proximus X X A Crotalus atrox
X Pr Testudines Chelonia mydas X P Lepidochelys kempii X SE Trachemys venusta X X SE Terrapene carolina X X Pr Kinosternons corpio X X Pr Gopherus berlandier X A
Key words: western diamondback rattlesnake, Crotalus atrox
, chemical cues, predatory behavior
Female reproduction in the western diamond-backed rattlesnake, Crotalus atrox
(Serpentes: Viperidae), from Arizona.
Tetrathyridia have been previously found in Masticophis flagellum from Texas by Conn and McAllister (1990) and from Crotalus atrox
Palabras Clave: Crotalus, Crotalus aquilus, Crotalus atrox
, Crotalus intermedius, Crotalus molossus, Crotalus scutulatus, Crotalus totonacus, Crotalus triseriatus, rango de distribucion.
Subjects were 12 rattlesnakes (3 Crotalus atrox
, 3 Crotalus oreganus oreganus, 3 Crotalus oreganus lutosus, and 3 Crotalus oreganus helleri).
Female reproduction in the western diamondbacked rattlesnake, Crotalus atrox
(Serpentes: Viperidae) from Arizona.
This is in contrast to the western rattlesnake, Crotalus viridis, the western diamondback rattlesnake, Crotalus atrox
, the Mojave rattlesnake, Crotalus scutulatus and the tiger rattlesnake, Crotalus tigris in which the major period of spermiogenesis occurs in summer-autnumn (Aldridge 1979a, Jacob et al.
cyrtopsis and Crotalus atrox
most frequently and Salvadora hexalepis and Salvadora grahamiae, Micruroides euryxanthus, and Lampropeltis getula rarely.
Six Crotalus atrox
from our colony (N = 10) were randomly selected as subjects.
Reproductive tissue was examined from 46 sexually mature female Crotalus atrox
specimens from Arizona, and additional data were obtained from gravid females held in the laboratory and from palpation of live snakes in the field.
Also well represented in the general area is Crotalus atrox