ABSTRACT:Capture myopathy is a complication of capture and handling in many species of birds and mammals. Muscular necrosis leads to ataxia, paralysis, and pain, whereas metabolic disturbances can result in death. We conducted an opportunistic clinical trial on Bar-tailed Godwits (Limosa lapponica baueri) that developed capture myopathy after a cannon-net capture in New Zealand in October 2008. We assessed the beneficial effects of midazolam, a benzodiazepine with the effects of anxiolysis, muscle relaxation, and sedation, in the adjunctive treatment of capture myopathy. Physical and biochemical parameters were analyzed retrospectively for their potential as indicators for survival until release. Birds (n516) were treated with subcutaneous fluid therapy, a nonsteroidal anti-inflammatory (meloxicam), gavage feeding, and sling therapy twice daily. The treatment group (n58) was treated twice daily with intramuscular midazolam injections, 1.5 mg/kg. Surviving godwits were released over 1-9 days, with 6 of 8 treated birds (75%) surviving to release, compared with 3 of 8 controls (38%). Inability to counteract weight loss in captivity was the most significant problem for both groups. Lack of waterproofing and predation were contributing causes of death for at least two godwits after release. Birds treated with midazolam showed subjective benefits including improved tolerance of handling and sling therapy. Clinical parameters (change in body mass, packed cell volume [PCV], plasma creatine kinase [CK], aspartate aminotransferase [AST], total protein, and uric acid [UA] over time) were not statistically different between groups, although peak average values for CK, AST, and UA were lower in the treatment group. Decline in body mass (%), PCV, final plasma UA, and peak plasma CK were the most useful prognostic indicators. Midazolam shows potential as an ancillary treatment for capture myopathy in birds and is worthy of continued study and use.

Summary1. During an oil spill, marine wildlife, particularly birds, are at risk of external contamination, affecting insulation, waterproofing and consequently survival. Decontamination of oiled wildlife usually involves a succession of washes and rinses with warm, freshwater and detergent. However, accessibility of large quantities of freshwater needed for cleaning oiled wildlife can be limited. 2. To assess the efficacy of sea water as an alternative, we used 80 seabird feathers, 40 saturated with heavy fuel oil and 40 unoiled feathers as controls, then washed and rinsed them using either freshwater or sea water, or a combination of both. 3. Cleanliness and water repellency were assessed visually, and a barbule amalgamation index (BAI) was calculated to evaluate feather microstructure. Particulate residue was assessed using scanning electron microscopy. 4. Results indicate that for oiled feathers, a sea water wash/rinse produced clean, low BAI/unclumped feathers with minimal particulate residue. Sea water cleaning trials should now be undertaken on live birds to understand links with sea water use and waterproofing. 5. The method described has world-wide application for oiled wildlife response activities and could be readily modified for the cleaning of other taxa such as mammals.