Chronic nonchylous lymphatic pleural effusion in a bottlenose dolphin (Tursiops truncatus).

Case Description: A 19-year-old male bottlenose dolphin (Tursiops truncatus) presented with inappetence and avoidant behavior.

Clinical Findings: Ultrasound revealed a large-volume left-sided pleural effusion, which was consistent with chronic nonchylous lymphatic effusion and mild chronic hemorrhage by cytology. Computed tomography identified ipsilateral rib fractures, atelectasis, nodular pleuritis, marginal lymph node enlargement, and suspected dilation of the thoracic duct and internal thoracic veins.

Testosterone and progesterone concentrations in blow samples are biologically relevant in belugas (Delphinapterus leucas).

Steroid hormone analysis in blow (respiratory vapor) may provide a minimally invasive way to assess the reproductive status of wild cetaceans. Biological validation of the method is needed to allow for the interpretation of hormone measurements in blow samples. Utilizing samples collected from trained belugas (Delphinapterus leucas, n=20), enzyme immunoassays for testosterone and progesterone were validated for use with beluga blow samples.

Characterization of progressive keratitis in otariids.

Objective: To characterize a form of progressive keratitis that occurs commonly in otariids.

Materials And Methods: One hundred and thirteen captive otariids were evaluated by ophthalmologic examination and digital photography.

Results: Forty-six females and 67 males were in the reference population, average age of 14 years.

Risk factors associated with cataracts and lens luxations in captive pinnipeds in the United States and the Bahamas.

Objective: To determine risk factors for lens luxation and cataracts in captive pinnipeds in the United States and the Bahamas.

Design: Cross-sectional study.

Animals: 111 pinnipeds (99 California sea lions [Zalophus californianus], 10 harbor seals [Phoca vitulina], and 2 walruses [Odobenus rosmarus]) from 9 facilities.