Recent evidence suggests that populations of North American Porcupines (Erethizon dorsatum
) may be declining in parts of their range, including the Pacific Northwest.
Secondary prey included porcupine (Erethizon dorsatum
), beaver (Castor canadensis), turkey (Meleagris gallopavo), raccoon (Procyon lotor), several species of rodents and lagomorphs, and domestic livestock (e.g., cattle, horses, goats; Wilckens et al.,
Additionally, fishers possess the uncommon ability to prey efficiently on North American porcupines Erethizon dorsatum
when available (Powell 1993, Pokallus and Pauli 2015).
In the literature, there is no information on the progesterone changes during the pregnancy of Dasyprocta sp., compared to other hystricomorph, such as Myoprocta pratti, Cavia porcellus, Galea musteloides, Dolichotis patagonum, Myocastor coypus, Erethizon dorsatum
, Hystrix africaeaustralis, and Cuniculus paca (Rowlands, Tam, & Kleiman, 1970; Challis, Heap, & Illingworth, 1971; Tam, 1973; Louis, Somes, Pryor, & Blankenship, 1986; Van Aarde & Potgieter, 1986; Jakubicka, Barta, Nitray, & Szeleszczukova, 1989; Barta & Jakubicka, 1991; Sweitzer & Holcombre, 1993; Van Wyk, Van Aarde, & Louw, 1994; Ribeiro et al., 2012).
Elitis and Hennon (1987) observed that Sitka spruce (33% damage) appeared to be preferred over western hemlock (15% damage) by Erethizon dorsatum
as a host tree in conifer stands in southeast Alaska.
Most studies conducted in this region indicate that bobcats feed mainly on lagomorphs, such as rabbits (Sylvilagus) and hares (Lepus), and to a lesser extent on rodents, e.g., woodrats (Neotoma) and porcupines (Erethizon dorsatum
Common Name Scientific Name Number of Individuals Masked Shrew Sorex cinereus 8 Northern Short-tailed Shrew Blarina brevicaudata 2 Eastern Mole Scalopus aquaticus 2 Short-tailed Weasel Mustela ermine 1 Eastern Chipmunk Tamias striatus 3 Red Squirrel Tamiasciurus hudsonicus 2 Southern Flying Squirrel Glaucomys volans 2 White-footed Mouse Peromyscus leucopus 7 Southern Red-backed Vole Clethrionomys gapperi 1 Meadow Vole Microtus pennsylvanicus 1 House Mouse Mus musculus 2 North American Porcupine Erethizon dorsatum
1 Unidentified Crayfish Cambarus sp.
I had grown accustomed to the quillwork of the North American First Nations women who embroidered their delicate designs with colourfully dyed, 5-centimetre-long quills of the North American porcupine, Erethizon dorsatum
. In contrast, the Cameroon outfit employed 23-centimetrelong, undyed quills of the crested porcupine, Hystrix cristata.
(North American porcupine; Extirpated).
Specimens of the American porcupine (Erethizon dorsatum
) and American black bear (Ursus americanus) have been obtained in Webb County, Texas.
Hepatic capillariasis (Capillaria hepatica) in porcupines (Erethizon dorsatum
) in Pennsylvania.
Relict mammal species in the northeastern Mojave sky islands include the gray wolf (Canis lupus), now extirpated (Schmidt 1991), and porcupine (Erethizon dorsatum
) (Johnson et al.