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Updated: May 15, 2026

Bottlenose Dolphin (Tursiops truncatus) Spermatozoa: Collection, Cryopreservation, and Heterologous In Vitro Fertilization
Published on: August 21, 2017
Mixed testicular neoplasia in a short beaked common dolphin Delphinus delphis
J Díaz-Delgado1, A Espinosa de Los Monteros, C Fernández-Maldonado
1Veterinary Histology and Pathology, Institute of Animal Health, Veterinary School, University of Las Palmas de Gran Canaria, Trasmontaña s/n, Arucas 35413, Las Palmas de Gran Canaria, Spain.
Abstract:
A diagnosis of mixed testicular neoplasia in a short beaked common dolphin Delphinus delphis involving a Sertoli cell tumor, an interstitial (Leydig) cell tumor and a seminoma is presented. Lymphatic spread of the Sertoli cell tumor to an adjacent retroperitoneal lymph node was observed. Testicular neoplasms have been infrequently reported in marine mammals. Demonstration of clinical signs and further health implications is extremely challenging when dealing with non accessible wildlife species, such as dolphins. However, metastatic potential for these neoplastic conditions should be considered.

