UROLITHIASIS in FREE-RANGING and CAPTIVE OTTERS (LUTRA LUTRA and AONYX CINEREA) in EUROPE
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UROLITHIASIS in FREE-RANGING and CAPTIVE OTTERS (LUTRA LUTRA and AONYX CINEREA) in EUROPE. / Bochmann, Monika; Steinlechner, Stephan; Hesse, Albrecht; Dietz, Hans Henrik; Weber, Heike.
In: Journal of Zoo and Wildlife Medicine, Vol. 48, No. 3, 09.2017, p. 725-731.Research output: Contribution to journal › Journal article › Research › peer-review
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T1 - UROLITHIASIS in FREE-RANGING and CAPTIVE OTTERS (LUTRA LUTRA and AONYX CINEREA) in EUROPE
AU - Bochmann, Monika
AU - Steinlechner, Stephan
AU - Hesse, Albrecht
AU - Dietz, Hans Henrik
AU - Weber, Heike
PY - 2017/9
Y1 - 2017/9
N2 - Between 1996 and 1998, 477 dead otters from different Central European countries were examined for urolithiasis, including 449 free-ranging Eurasian otters (Lutra lutra) as well as 17 Eurasian otters and 11 Asian small-clawed otters (Aonyx cinerea) from captivity. In the free-ranging specimens, uroliths (sand or stones) were found in 105 animals (23.4%), with no significant difference (P = 0.77) between the sexes. Uroliths were not present in any juveniles (n = 26) and urolithiasis was not considered the main cause of death in any individual. In captive specimens, uroliths were found in 11 out of 17 Eurasian otters (64.7%; four males and seven females), and in 3 out of 11 Asian small-clawed otters (27.3%). Histology could not find any signs of inflammation in examined kidneys (n = 179) or urinary bladders (n = 66). Analyzed stones of free-ranging and captive Eurasian otters were composed mainly of ammonium acid urate. The stones of three captive Asian small-clawed otters consisted mainly of calcium oxalate. The difference in prevalence of uroliths between free-ranging and captive Eurasian otters was significant (P < 0.001). Nevertheless, the prevalence in free-ranging specimens of this study is higher than reported before. Differences between various habitats, environmental changes, and genetic predisposition all represent potential hypothetical explanations for these findings.
AB - Between 1996 and 1998, 477 dead otters from different Central European countries were examined for urolithiasis, including 449 free-ranging Eurasian otters (Lutra lutra) as well as 17 Eurasian otters and 11 Asian small-clawed otters (Aonyx cinerea) from captivity. In the free-ranging specimens, uroliths (sand or stones) were found in 105 animals (23.4%), with no significant difference (P = 0.77) between the sexes. Uroliths were not present in any juveniles (n = 26) and urolithiasis was not considered the main cause of death in any individual. In captive specimens, uroliths were found in 11 out of 17 Eurasian otters (64.7%; four males and seven females), and in 3 out of 11 Asian small-clawed otters (27.3%). Histology could not find any signs of inflammation in examined kidneys (n = 179) or urinary bladders (n = 66). Analyzed stones of free-ranging and captive Eurasian otters were composed mainly of ammonium acid urate. The stones of three captive Asian small-clawed otters consisted mainly of calcium oxalate. The difference in prevalence of uroliths between free-ranging and captive Eurasian otters was significant (P < 0.001). Nevertheless, the prevalence in free-ranging specimens of this study is higher than reported before. Differences between various habitats, environmental changes, and genetic predisposition all represent potential hypothetical explanations for these findings.
KW - Ammonium acid urate uroliths
KW - Aonyx cinerea
KW - Asian small-clawed otter
KW - calcium oxalate uroliths
KW - Eurasian otter
KW - Lutra lutra
U2 - 10.1638/2016-0223.1
DO - 10.1638/2016-0223.1
M3 - Journal article
C2 - 28920816
AN - SCOPUS:85029674508
VL - 48
SP - 725
EP - 731
JO - Journal of Zoo and Wildlife Medicine
JF - Journal of Zoo and Wildlife Medicine
SN - 1042-7260
IS - 3
ER -
ID: 188398019