Open Access Repository

Recovery periods of cultured spiny lobster, Sagmariasus verreauxi juveniles: Effects of handling, force feeding, exercising to exhaustion and anaesthesia on oxygen consumption and ammonia-N excretion rates

Downloads

Downloads per month over past year

Jensen, MA and Fitzgibbon, QP and Carter, CG and Adams, LR (2013) Recovery periods of cultured spiny lobster, Sagmariasus verreauxi juveniles: Effects of handling, force feeding, exercising to exhaustion and anaesthesia on oxygen consumption and ammonia-N excretion rates. Aquaculture, 410-41. pp. 114-121. ISSN 0044-8486

[img] PDF
Jensen_2013_d_(...pdf | Request a copy
Full text restricted
Available under University of Tasmania Standard License.

Abstract

The ability of lobsters to recover from stress is an important factor influencing growth and survival in
aquaculture; however, there is limited information on the metabolic responses of spiny lobsters to stress.
This study determined oxygen consumption rate ( M˙ O2 ) and ammonia-N excretion of juvenile spiny
lobsters Sagmariasus verreauxi in response to handling, anaesthesia, anaesthesia then force feeding, and
exercising to exhaustion in order to determine the recovery time and amount of oxygen required to recover
from common sources of stress in aquaculture. Lobsters required 0.29 ± 0.24 mg O2 g DM−1 over a period of
2.5 ± 1.40 h to recover from handling. Anaesthesia with 2-phenoxyethanol immobilised lobsters but
they required 0.72 ±0.36 mg O2 g DM−1 over a period of 4.5 ± 1.77 h to recover, indicating that
2-phenoxyethanol causes substantial stress. Force feeding lobsters anaesthetised with 2-phenoxyethanol or
clove oil did not result in a higher increase of M˙ O2 compared to 2-phenoxyethanol anaesthesia alone. Recovery
from exercise to exhaustion required 1.84 mg O2 g DM−1 over a period of 10.17 ± 0.70 h. Ammonia-N
excretion, measured 24 h post-treatment, and atomic O:N ratios were not significantly different between
treatments and indicated lobsters in all groups had reached the same level of recovery 24 h post-treatment.
Overall, the study demonstrated that lobsters recover rapidly from handling. Conversely, the increase in M˙ O2
induced by 2-phenoxyethanol demonstrated this is not an effective anaesthetic for reducing recovery periods
and physiological stress associated with handling. However, 2-phenoxyethanol and clove oil eliminated further
stress associated with force feeding, indicative of an invasive research procedure. Exercise to exhaustion resulted
in the largest magnitude increase in M˙ O2 and longest recovery period. It is therefore recommended that
aquaculture handling procedures take precautions to limit activity and are carried out without anaesthesia to
facilitate more rapid recovery of lobsters.

Item Type: Article
Keywords: Clove oil Energy Oxygen consumption 2-phenoxyethanol Recovery Welfare
Journal or Publication Title: Aquaculture
Page Range: pp. 114-121
ISSN: 0044-8486
Identification Number - DOI: 10.1016/j.aquaculture.2013.06.020
Additional Information:

Copyright 2013 Elsevier

Date Deposited: 25 Nov 2013 04:52
Last Modified: 18 Nov 2014 04:56
Item Statistics: View statistics for this item

Actions (login required)

Item Control Page Item Control Page
TOP