Open Access Repository

The Achilles heel for spiny lobsters: the energetics of the non-feeding post-larval stage

Downloads

Downloads per month over past year

Fitzgibbon, QP and Jeffs, AG and Battaglene, SC (2014) The Achilles heel for spiny lobsters: the energetics of the non-feeding post-larval stage. Fish and Fisheries, 15. pp. 312-326. ISSN 1467-2960

[img] PDF
faf2014.pdf | Request a copy
Full text restricted
Available under University of Tasmania Standard License.

Abstract

Spiny lobsters are highly valuable seafood species that are captured and marketed
in more than 90 countries. After more than 30 years of stable catches, spiny lobster
fisheries in many parts of the world are declining due to decreased recruitment.
The planktonic larvae spend up to 2 years in offshore waters, accumulating
energy stores to fuel the non-feeding post-larva, or puerulus, to actively migrate
onshore and settle. The total energy required by spiny lobster pueruli for cross-shelf
migration has not been accurately determined. Recent advances in larval culture
have provided the opportunity for the first detailed examination of the swimming
performance, respiratory metabolism and nitrogen excretion of spiny lobster (Sagmariasus
verreauxi) throughout the puerulus stage. The routine and active metabolic
rates of pueruli were lower than for most other decapod larvae, probably to
provide greater energy efficiency. However, pueruli were found to have limited
time, swimming ability and fuel for active cross-shelf migration. It is estimated that
S. verreauxi pueruli require at least 13.8 mg of stored lipid to provide sufficient
energy (18.4% DW) to complete the puerulus stage and recruit to coastal habitats.
The ability of the preceding phyllosoma larvae to accumulate these reserves, and
the presence of favourable oceanographic conditions during the limited time available
to the migrating puerulus, are both crucial to subsequent successful recruitment.
Spiny lobster recruitment processes appear to be particularly vulnerable to
changes in oceanic climate which is likely to contribute to the recent large-scale
declines in recruitment to valuable fished populations

Item Type: Article
Keywords: Larval ecology, larval energetics, Palinuridae fisheries, puerulus, recruitment, zooplankton
Journal or Publication Title: Fish and Fisheries
Page Range: pp. 312-326
ISSN: 1467-2960
Identification Number - DOI: 10.1111/faf.12018
Additional Information:

Copyright 2014 John Wiley & Sons

Date Deposited: 27 May 2014 01:02
Last Modified: 18 Nov 2014 05:00
Item Statistics: View statistics for this item

Actions (login required)

Item Control Page Item Control Page
TOP