Disentanglement of Cape fur seals (Arctocephalus pusillus pusillus) with reversible medetomidine-midazolam-butorphanol

Journal of the South African Veterinary Association

Field Value
Title Disentanglement of Cape fur seals (Arctocephalus pusillus pusillus) with reversible medetomidine-midazolam-butorphanol
Creator Gardner, Brett R. Spolander, Brandon Seakamela, S. Mduduzi McCue, Steven A. Kotze, Pieter G.H. Musson, Maryke
Subject Anaesthesia, Marine Mammals reversible anaesthesia; immobilisation; Cape fur seal; medetomidine; midazolam; butorphanol; disentanglement; atipamezole; naltrexone; Arctocephalus pusillus pusillus
Description Anaesthesia in pinnipeds is considered a much higher risk than in most terrestrial mammals because of their frequent proximity to water and physiological and anatomical adaptations related to diving, which also influence their anaesthesia management. Anaesthetising and immobilising entangled seals does not allow for selection of animals that are at a safe distance from the water’s edge. Medetomidine-midazolam-butorphanol (MMB) sedation was trialled on eight entangled Cape fur seals (CFS) (Arctocephalus pusillus pusillus) to determine if it was safe to use on animals that entered the water post-darting. The MMB was given at an estimated dose of 0.03 mg/kg, 0.2 mg/kg and 0.2 mg/kg, respectively, via remote darting. Sedation was reversed with intramuscular atipamezole (0.15 mg/kg) and naltrexone (0.4 mg/kg) to antagonise the effects of medetomidine and butorphanol, respectively. Moderate sedation was achieved in six animals. Six of the animals entered the water after being darted. There was a single mortality and a single animal that was too lightly sedated for capture. The preliminary results indicate that MMB produces suitable sedation for disentanglement of CFS. Additionally, MMB might be suitable for application to field-based biological research.
Publisher AOSIS
Date 2021-05-21
Type info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion — —
Format text/html application/epub+zip text/xml application/pdf
Identifier 10.4102/jsava.v92i0.2119
Source Journal of the South African Veterinary Association; Vol 92 (2021); 5 pages 2224-9435 1019-9128
Language eng
Relation https://journals.jsava.aosis.co.za/index.php/jsava/article/view/2119/2720 https://journals.jsava.aosis.co.za/index.php/jsava/article/view/2119/2721 https://journals.jsava.aosis.co.za/index.php/jsava/article/view/2119/2722 https://journals.jsava.aosis.co.za/index.php/jsava/article/view/2119/2723
Coverage South Africa — —
Rights Copyright (c) 2021 Brett Richard Gardner, Brandon Spolander, Simon Mduduzi Seakamela, Steven Andy McCue, Pieter Gideon Kotze, Maryke Musson https://creativecommons.org/licenses/by/4.0