Effects of temperature, salinity, desiccation and chemical treatments on egg embryonation and hatching success of Benedenia seriolae (Monogenea : Capsalidae), a parasite of farmed Seriola spp.

Ernst, I., Whittington, I. D., Corneillie, S. and Talbot, C. (2005) Effects of temperature, salinity, desiccation and chemical treatments on egg embryonation and hatching success of Benedenia seriolae (Monogenea : Capsalidae), a parasite of farmed Seriola spp.. Journal of Fish Diseases, 28 3: 157-164. doi:10.1111/j.1365-2761.2004.00605.x


Author Ernst, I.
Whittington, I. D.
Corneillie, S.
Talbot, C.
Title Effects of temperature, salinity, desiccation and chemical treatments on egg embryonation and hatching success of Benedenia seriolae (Monogenea : Capsalidae), a parasite of farmed Seriola spp.
Formatted title
Effects of temperature, salinity, desiccation and chemical treatments on egg embryonation and hatching success of Benedenia seriolae (Monogenea: Capsalidae), a parasite of farmed Seriola spp.
Journal name Journal of Fish Diseases   Check publisher's open access policy
ISSN 0140-7775
Publication date 2005-01-01
Sub-type Article (original research)
DOI 10.1111/j.1365-2761.2004.00605.x
Open Access Status Not yet assessed
Volume 28
Issue 3
Start page 157
End page 164
Total pages 8
Place of publication Oxford
Publisher Blackwell Publishing Ltd
Language eng
Subject C1
300703 Aquaculture
780105 Biological sciences
Abstract The effects of temperature and salinity on the embryonation period and hatching success of eggs of Benedenia seriolae were investigated. Temperature strongly influenced embryonation period; eggs first hatched 5 days after laying at 28 degreesC and 16 days after laying at 14 degreesC. The relationship between temperature and embryonation period is described by quadratic regression equations for time to first and last hatching. Hatching success was >70% for B. seriolae eggs incubated at temperatures from 14 to 28 degreesC. However, no B. seriolae eggs embryonated and hatched at 30 degreesC and <2% of eggs hatched when incubated at 24 degreesC after transfer to 30 degreesC for 48 h. Embryonation period was similar for eggs incubated in sea water at 25, 30 and 35parts per thousand salinity, but increased for eggs incubated at higher or lower salinities. When incubated at salinities ranging from 25 to 45parts per thousand, more than 70% of B. seriolae eggs embryonated and hatched. Hatching success was lower at 20 and 50parts per thousand salinity and few or no eggs hatched at 10 and 15parts per thousand. Hatching of B. seriolae eggs can be prevented by desiccation for 3 min, by immersion in water at 50 degreesC for 30 s or by treatment with 25% ethanol for 3 min.
Keyword Benedenia
Egg Embryonation
Hatching
Monogenea
Seriola Spp.
Treatments
Fisheries
Marine & Freshwater Biology
Veterinary Sciences
Formalin
Gills
Skin
Q-Index Code C1
Institutional Status UQ

 
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Created: Wed, 15 Aug 2007, 16:18:55 EST