First report of vaginal stone in the common dolphin from the Black Sea coast of Türkiye
34th Conference of the European Cetacean Society, Pontevedra, İspanya, 18 - 20 Nisan 2023, ss.354, (Özet Bildiri)
- Yayın Türü: Bildiri / Özet Bildiri
- Basıldığı Şehir: Pontevedra
- Basıldığı Ülke: İspanya
- Sayfa Sayıları: ss.354
- Dokuz Eylül Üniversitesi Adresli: Hayır
Özet
Vaginal stones or calculi have been reported in mammals like Guinea pigs, moles, bats, primates, humans, and several cetacean species, especially delphinid species. They have been found in common dolphins from the Atlantic and Pacific Oceans as well as the Black Sea. In the Black Sea, the reports go back to the 1940s, however, the causes and effects on the population still need to be studied. On 18 June 2022, a common dolphin (Delphinus delphis) stranded alive in Istanbul and died after 3 hours. A healed scar at the base of the right lower jaw, upper jaw shifted to left, new tooth cavities formed in the right lower jaw, emaciation, thin and congested blubber, cystic kidneys, and a vaginal stone were the main gross findings in the necropsy of the 160 cm long female individual. It was cylindrical in shape, 151.8mm in length, with 49.1mm max height, 55.3mm max width, 355.3g weight, and 1.6 g/cm3 density. The main histopathological findings were severe glomerular changes and tubulointerstitial nephritis, haemorrhages, cysts, hyalin casts in the kidneys, liver steatosis with severe congestion, diffuse capsular and interstitial fibrosis and severe pigmentation in the spleen, and haemorrhage in the lungs. Vaginal stone formation and cachexia have been mentioned together in previous studies. Considering the mandibular shift and cachexia, changes in kidney and liver can be associated with emaciation. Mineral analysis of the stone is still ongoing. There are different hypotheses on the causes of stone formation, such as bacterial infections, concentration changes and stasis of urine and deposition of minerals around foetal remains. Although there are previously reported cases in the Black Sea, this is the first case from the Turkish coasts. Bycaught and stranded animals, thus, should be examined in detail to understand calculi formation and their possible effects on reproductivity of the animal.