Estimating morphometric attributes of baleen whales with photogrammetry from small UASs: A case study with blue and gray whales

With this study reserachers present a three program analysis suite that measures baleen whales and compensates for lens distortion and corrects scaling error to produce 11 morphometric attributes from sUAS imagery. The program is freely available and is expected to improve processing efficiency and analytical continuity.

Multiple steroid and thyroid hormones detected in baleen from eight whale species

Recent studies have demonstrated that some hormones are present in baleen powder from bowhead (Balaena mysticetus) and North Atlantic right (Eubalaena glacialis) whales. To test the potential generalizabilit​y of this technique for studies of stress and reproduction in large whales, researchers sought to determine whether all major classes of steroid and thyroid hormones are detectable in baleen, and whether these hormones are detectable in other mysticetes.

Analysis of stress factors associated with KHV reactivation and pathological effects from KHV reactivation

Koi herpesvirus (KHV) is a highly pathogenic virus of common carp and koi. KHV becomes latent in recovered koi or exposed koi without symptoms, and the latent infection can reactivate under stress conditions. KHV reactivation from latency often occurs when water temperature rapidly rises above 17 °C. Dissolved O2 is lower at ≥17 °C than at non-stress temperatures ≤15 °C.

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