English
norskGreen sea urchin (Strongylocentrotus droebachiensis,Müller) in aquaculture: the effects of environmental factors on gonad growth.
Permanent lenke
https://hdl.handle.net/10037/2263
Åpne
Dale T., Siikavuopio, S. I., Aas, K.: " Roe enhancement in sea urchin: effects of handling during harvest and transport on mortality and gonad growth in Strongylocentrotus droebachiensis." Journal of Shellfish Research 200; 24(4), 1235-1239. © The National Shellfisheries Association. Reprinted with permission. (PDF)
Thesis introduction (PDF)
Dato
2009-10-30Type
Doctoral thesisDoktorgradsavhandling
Sammendrag
Ved hjelp av eksperimentelle studier har en undersøkt effekten av ulike miljøfaktorer på gonadevekst hos Drøbak-kråkebolle i oppdrett. Dette inkluderer effekten av temperatur, størrelse, sesong, individtetthet og forskjellige vannkvalitetsparametre (O2, CO2, nitritt, ammoniakk) og håndtering på overlevelse, gonadevekst, fôrinntak og fôrutnyttelse.
Optimal temperatur for gonadevekst hos voksne kråkeboller ligger mellom 10 og 12 ºC om sommeren og ca 8 ºC om vinteren. Temperaturer over 12 ºC gir redusert vekst og fôrutnyttelse. Studiene viser at Drøbak-kråkebollen har lav toleranse for CO2, nitritt og ammoniakk sammenliknet med laksefisk. Forhøyede nivåer av disse stoffene medfører redusert gonadevekst, mens fôrinntaket blir lite påvirket. Dette resulterer i svært dårlig fôrutnyttelse. Kråkebollene har lavt oksygenforbruk, men er likevel svært følsomme for reduksjoner i vannets oksygeninnhold. Disse forholdene tilsier at kråkeboller i oppdrett krever stor vannutskifting for å opprettholde maksimal gonadevekst.
For høy individtetthet i oppdrett medfører også nedsatt gonadevekst. Arbeidet omfatter en kartlegging av akseptabel tetthet for kråkebolle i oppdrett.
Beskrivelse
Papers number 1, 2, 3, 5, 6, 7, 8, 9 and 10 of the thesis are not available in Munin due to publishers' restrictions:
1. Siikavuopio, S. I., Mortensen. A., Christiansen, J. S.: "Effects of body weight and temperature on feeding, gonad growth and oxygen consumption in green sea urchin, Strongylocentrotus droebachiensis." Aquaculture 2008; 281, 77-82 (Elsevier). Available at http://dx.doi.org/http://dx.doi.org/10.1016j.aquaculture.2008.05.033>
2. Siikavuopio, S. I., Christiansen, J.S., Dale, T.: "Effects of temperature and season on gonad growth and feed intake in the green sea urchin (Strongylocentrotus droebachiensis)." Aquaculture 2006; 255, 389-394 (Elsevier). Available at http://dx.doi.org/http://dx.doi.org10.1016j.aquaculture.2005.12.021
3. Siikavuopio, S. I., Christiansen, J. S., Sæther, B-S., Dale, T.: "Seasonal variation in feed intake under constant temperature and natural photoperiod in the green sea urchin (Strongylocentrotus droebachiensis)." Aquaculture 2006; 272, 328-334 (Elsevier). Available at http://dx.doi.org/http://dx.doi.org/10.1016/j.aquaculture.2007.09.003
5. Siikavuopio, S. I., Dale, T., Foss, A., Mortensen, A.: "Effects of chronic ammonia exposure on gonad growth and survival in green sea urchin, Strongylocentrotus droebachiensis." Aquaculture 2004; 242, 313-320 (Elsevier). Available at http://dx.doi.org/10.1016j.aquaculture.2004.08.042
6. Siikavuopio, S. I., Dale, T., Christiansen, J. S., Nevermo, I.: " Effects of chronic nitrite exposure on gonad growth in green sea urchin, Strongylocentrotus droebachiensis." Aquaculture 2004; 242, 357-363 (Elsevier). Available at http://dx.doi.org/10.1016/j.aquaculture.2004.09.007
7. Siikavuopio, S. I., Dale, T., Mortensen, A., Foss, A.: " Effects of hypoxia on feed intake and gonad growth in the green sea urchin (Strongylocentrotus droebachiensis)." Aquaculture 2007; 266, 112-116 (Elsevier). Available at http://dx.doi.org/10.1016j.aquaculture.2007.02.028
8. Siikavuopio, S. I., Mortensen, A., Dale, T., Foss, A.: " Effects of carbon dioxide exposure on feed intake and gonad growth in green sea urchin (Strongylocentrotus droebachiensis)." Aquaculture 2007; 266, 97-101 (Elsevier).Available at http://dx.doi.org/10.1016/j.aquaculture.2007.02.044
9. Siikavuopio, S. I., Dale, T., Mortensen, A.: " The effects of stocking density on gonad growth, survival and feed intake of adult green sea urchin (Strongylocentrotus droebachiensis)." Aquaculture 2007; 262, 78-85 (Elsevier). Available at http://dx.doi.org/10.1016/j.aquaculture.2006.09.045
10. Christiansen, J. S., Siikavuopio, S. I.: "The relationship between feed intake and gonad growth of single and stocked green sea urchin (Strongylocentrotus droebachiensis) in a raceway culture." Aquaculture 2007; 262, 163-167 (Elsevier). Available at http://dx.doi.org/10.1016/j.aquaculture.2006.09.043
1. Siikavuopio, S. I., Mortensen. A., Christiansen, J. S.: "Effects of body weight and temperature on feeding, gonad growth and oxygen consumption in green sea urchin, Strongylocentrotus droebachiensis." Aquaculture 2008; 281, 77-82 (Elsevier). Available at http://dx.doi.org/http://dx.doi.org/10.1016j.aquaculture.2008.05.033>
2. Siikavuopio, S. I., Christiansen, J.S., Dale, T.: "Effects of temperature and season on gonad growth and feed intake in the green sea urchin (Strongylocentrotus droebachiensis)." Aquaculture 2006; 255, 389-394 (Elsevier). Available at http://dx.doi.org/http://dx.doi.org10.1016j.aquaculture.2005.12.021
3. Siikavuopio, S. I., Christiansen, J. S., Sæther, B-S., Dale, T.: "Seasonal variation in feed intake under constant temperature and natural photoperiod in the green sea urchin (Strongylocentrotus droebachiensis)." Aquaculture 2006; 272, 328-334 (Elsevier). Available at http://dx.doi.org/http://dx.doi.org/10.1016/j.aquaculture.2007.09.003
5. Siikavuopio, S. I., Dale, T., Foss, A., Mortensen, A.: "Effects of chronic ammonia exposure on gonad growth and survival in green sea urchin, Strongylocentrotus droebachiensis." Aquaculture 2004; 242, 313-320 (Elsevier). Available at http://dx.doi.org/10.1016j.aquaculture.2004.08.042
6. Siikavuopio, S. I., Dale, T., Christiansen, J. S., Nevermo, I.: " Effects of chronic nitrite exposure on gonad growth in green sea urchin, Strongylocentrotus droebachiensis." Aquaculture 2004; 242, 357-363 (Elsevier). Available at http://dx.doi.org/10.1016/j.aquaculture.2004.09.007
7. Siikavuopio, S. I., Dale, T., Mortensen, A., Foss, A.: " Effects of hypoxia on feed intake and gonad growth in the green sea urchin (Strongylocentrotus droebachiensis)." Aquaculture 2007; 266, 112-116 (Elsevier). Available at http://dx.doi.org/10.1016j.aquaculture.2007.02.028
8. Siikavuopio, S. I., Mortensen, A., Dale, T., Foss, A.: " Effects of carbon dioxide exposure on feed intake and gonad growth in green sea urchin (Strongylocentrotus droebachiensis)." Aquaculture 2007; 266, 97-101 (Elsevier).Available at http://dx.doi.org/10.1016/j.aquaculture.2007.02.044
9. Siikavuopio, S. I., Dale, T., Mortensen, A.: " The effects of stocking density on gonad growth, survival and feed intake of adult green sea urchin (Strongylocentrotus droebachiensis)." Aquaculture 2007; 262, 78-85 (Elsevier). Available at http://dx.doi.org/10.1016/j.aquaculture.2006.09.045
10. Christiansen, J. S., Siikavuopio, S. I.: "The relationship between feed intake and gonad growth of single and stocked green sea urchin (Strongylocentrotus droebachiensis) in a raceway culture." Aquaculture 2007; 262, 163-167 (Elsevier). Available at http://dx.doi.org/10.1016/j.aquaculture.2006.09.043
Forlag
Universitetet i TromsøUniversity of Tromsø
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