Cryptorchidism and delayed testicular descent in Florida black bears.
Retained testes were found in 11 (16%) of 71 black bears (Ursus americanus) examined over a 3-year period in Florida (USA). Four of the 11 bears were older than one year and weighed more than 32 kg; therefore, they were considered to be cryptorchid. The remaining seven bears may have had delayed testicular descent due to their apparent normal immature development. This is the first known published report of the prevalence of cryptorchidism and apparently normal delayed testicular descent in a black bear population.
Dunbar
M R
MR
Florida Game and Fresh Water Fish Commission, Wildlife Research Laboratory, Gainesville 32601, USA.
Cunningham
M W
MW
Wooding
J B
JB
Roth
R P
RP
D000367:Age Factors; D000818:Animals; D001835:Body Weight; D003456:Cryptorchidism / Q000453:epidemiology / Q000235:genetics / Q000662:veterinary*; D005431:Florida / Q000453:epidemiology; D007178:Inbreeding; D008297:Male; D015995:Prevalence; D001503:Ursidae