Open Access Repository

Parasitic crustaceans infecting cultured striped trumpeter Latris lineata

Downloads

Downloads per month over past year

Andrews, M and Cobcroft, JM and Battaglene, SC and Valdenegro, V and Martin, MB and Nowak, BF Parasitic crustaceans infecting cultured striped trumpeter Latris lineata. Parasitic crustaceans infecting cultured striped trumpeter Latris lineata, 416-41. pp. 280-288. ISSN 0044-8486

[img] PDF (Parasitic crustaceans infecting cultured striped trumpeter)
Parastic_crusta...pdf | Request a copy
Full text restricted
Available under University of Tasmania Standard License.

Abstract

Cultured striped trumpeter Latris lineata was held in sea cage systems or a land-based facility in south-eastern
Tasmania. Visual checks of metazoan ectoparasites were conducted on six cohorts (T1 to T6) in the land-based
facility from 2006 to 2007, and three cohorts (C1 to C3) held in cages from 2007 to 2008. Three parasite species
were recorded; a cymothoid Ceratothoa banksii; a chondracanthid Chondracanthus goldsmidi; anda caligidCaligus
nuenonnae. All three parasite species were present on the striped trumpeter in the sea cages with C. nuenonnae
and C. goldsmidi found in very low prevalence on all cohorts. There was no significant effect of cohort or season
on the parasites' prevalence or intensity. Cohort C1 had the highest numbers of C. nuenonnae with prevalence of
2.5% (intensity 1.0 ± 0.0 parasites fish−1), whilst cohort C3 had the highest prevalence of C. goldsmidi (3.3%, intensity
1.0 ± 0.0). The isopod C. banksii was recorded in increasing prevalence in cohorts C1 and C2 during 2008,
cohort C1 had a prevalence ranging from 9.8% (intensity 1.0 ± 0.0) to 17.5% (intensity 1 ± 0.0) whereas prevalence
in cohort C2 ranged from27.7% (intensity 1.21 ± 0.1) to 67.2% (intensity 1.8 ± 0.1). The two copepod specieswere
recorded on the fish held in the land-based facility. C. nuenonnae was found on fish fromtwo cohorts at
a prevalence of 22.3% (intensity 1.4 ± 0.1 parasites) in cohort T1 and 4.3% (1.0 ± 0.0) in cohort T2. In contrast,
C. goldsmidiwas present during all parasite checks of cohorts T2 to T6with the percentage of infected fish ranging
from 27.2% (intensity 1.3 ± 0.1) in cohort T2 to 100% (intensity 32.8 ± 1.9) in cohort T4. Treatments against
C. goldsmidi were conducted on cohorts T2 to T6 including manual removal of adult parasites and Neguvon
baths. There was no apparent reduction in the parasite prevalence within season during follow-up surveys
after ~6 months. An eleven month re-infection experiment was conducted with C. goldsmidi; striped trumpeter
from which parasites were removed showed significantly lower prevalence (F = 161.8, df 1,20, P b 0.001) than
those fish from which parasites were not removed. The study suggests that effective control of parasitic crustaceans
is likely to be an important factor in the successful culture of sea-caged striped trumpeter.

Item Type: Article
Journal or Publication Title: Parasitic crustaceans infecting cultured striped trumpeter Latris lineata
Page Range: pp. 280-288
ISSN: 0044-8486
Identification Number - DOI: /10.1016/j.aquaculture.2013.09.038
Additional Information:

Copyright 2013 Elsevier

Date Deposited: 06 Nov 2013 02:53
Last Modified: 18 Nov 2014 04:56
Item Statistics: View statistics for this item

Actions (login required)

Item Control Page Item Control Page
TOP