Koprowski, J. L. 1991. Response of fox squirrels and gray squirrels to a late spring-early summer food shortage. Journal of Mammalogy 72(2): 367-372.

thackerk1 — Tue, 23 Jul 2019 00:02:58 +0000

Authors

John L. Koprowski

The response of adult and juvenile fox squirrels (Sciurus niger) and gray squirrels (S. carolinensis) to a shortage in their two major May-June foods was monitored and compared to a year of typical food abundance. Squirrels foraged more frequently, but less efficiently, during the year of fruit failure than during the typical year. Juvenile survival of both species was reduced during the year of fruit failure, but adult survival remained high. Juvenile losses occurred during late June when weights of adults and juveniles were lower than in the year of typical fruit abundance. By influencing juvenile survival and body condition of adults, late spring-early summer can be a critical period for populations of tree squirrels.

Additional Information

Response of Fox Squirrels and Gray Squirrels to a Late Spring-Early Summer Food Shortage

Date of publication:

1991

Topics

fox squirrel

juvenile

food shortage

survival

body condition

Koprowski, J. L. 1993. The role of kinship in field interactions among juvenile gray squirrels (Sciurus carolinensis). Canadian Journal of Zoology 71: 224-226.

thackerk1 — Mon, 22 Jul 2019 23:58:01 +0000

Authors

John L. Koprowski

Adult eastern gray squirrels influence recruitment into local populations by directing aggression at juveniles and nonresidents. However, the role of juveniles in the social dynamics of squirrel populations is poorly understood. Field interactions among juvenile squirrels were studied between littermates and nonlittermates. Amicable interactions occurred only between littermates, while aggression was directed almost exclusively at nonlittermates. Juveniles within their own natal areas dominated nonresident juveniles. Interactions among juveniles appear to be influenced by kinship and may be important in determining recruitment patterns in squirrel populations.

Additional Information

The role of kinship in field interactions among juvenile gray squirrels (Sciurus carolinensis)

Date of publication:

1993

Topics

eastern gray squirrel

juvenile

littermates

nonlittermates

interactions

conservation.arizona.edu - juvenile

Koprowski, J. L. 1991. Response of fox squirrels and gray squirrels to a late spring-early summer food shortage. Journal of Mammalogy 72(2): 367-372.

Authors

Additional Information

Topics

Koprowski, J. L. 1993. The role of kinship in field interactions among juvenile gray squirrels (Sciurus carolinensis). Canadian Journal of Zoology 71: 224-226.

Authors

Additional Information

Topics