File Download

There are no files associated with this item.

  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Effects of body weight, water temperature and ration size on ammonia excretion by the areolated grouper (Epinephelus areolatus) and mangrove snapper (Lutjanus argentimaculatus)

TitleEffects of body weight, water temperature and ration size on ammonia excretion by the areolated grouper (Epinephelus areolatus) and mangrove snapper (Lutjanus argentimaculatus)
Authors
KeywordsAmmonia excretion
Grouper
Ration
Snapper
Temperature
Issue Date1999
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/aquaculture
Citation
Aquaculture, 1999, v. 170 n. 3-4, p. 215-227 How to Cite?
AbstractThe effects of body weight, water temperature and ration size on ammonia excretion rates of the areolated grouper Epinephelus areolatus and the mangrove snapper Lutjanus argentimaculatus were investigated. Under given experimental conditions, L. argentimaculatus had a higher weight-specific ammonia excretion rate than E. areolatus. Weight-specific ammonia excretion rates of fasted individuals of both species showed an inverse relationship with body weight (W, g wet wt.), but a positive relationship with water temperature (t, °C). The relationships for total ammonia nitrogen (TAN) were: E. areolatus: TAN (mg N kg-1 d-1) = 21.4. exp(0.11t) · W-0.43 (r2 = 0.919, n = 60); L. argentimaculatus: TAN (mg N kg-1 d-1) = 121.5 · exp(0.12t) · W-0.55 (r2=0.931, n = 60). Following feeding, the weight-specific ammonia excretion rate of E. areolatus increased, peaked at 2 to 12 h (depending on temperature), and returned to pre-feeding levels within 24 h. A similar pattern was observed for L. argentimaculatus, with a peak of TAN excretion being found 6 to 12 h after feeding. Stepwise multiple regression analysis indicated that weight-specific TAN excretion rates of both species increased with increasing temperature and ration (R, percent body wt. d-1): E. areolatus: TAN (mg N kg-1 d-1) = 22.8 · t - 28.8 · R 378.2 (r2 = 0.832, n = 24); L. argentimaculatus: TAN (mg N kg-1 d-1) = 22.9 · t - 25.4 · R 216.4 (r2= 0.611, n = 24). The effect of body weight on weight-specific postprandial TAN excretion was not significant in either species (p > 0.05). This study provides empirical data for estimating ammonia excretion of these two species under varying conditions. This has application for culture management.
Persistent Identifierhttp://hdl.handle.net/10722/92754
ISSN
2015 Impact Factor: 1.893
2015 SCImago Journal Rankings: 1.110
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorLeung, KMYen_HK
dc.contributor.authorChu, JCWen_HK
dc.contributor.authorWu, RSSen_HK
dc.date.accessioned2010-09-17T10:56:11Z-
dc.date.available2010-09-17T10:56:11Z-
dc.date.issued1999en_HK
dc.identifier.citationAquaculture, 1999, v. 170 n. 3-4, p. 215-227en_HK
dc.identifier.issn0044-8486en_HK
dc.identifier.urihttp://hdl.handle.net/10722/92754-
dc.description.abstractThe effects of body weight, water temperature and ration size on ammonia excretion rates of the areolated grouper Epinephelus areolatus and the mangrove snapper Lutjanus argentimaculatus were investigated. Under given experimental conditions, L. argentimaculatus had a higher weight-specific ammonia excretion rate than E. areolatus. Weight-specific ammonia excretion rates of fasted individuals of both species showed an inverse relationship with body weight (W, g wet wt.), but a positive relationship with water temperature (t, °C). The relationships for total ammonia nitrogen (TAN) were: E. areolatus: TAN (mg N kg-1 d-1) = 21.4. exp(0.11t) · W-0.43 (r2 = 0.919, n = 60); L. argentimaculatus: TAN (mg N kg-1 d-1) = 121.5 · exp(0.12t) · W-0.55 (r2=0.931, n = 60). Following feeding, the weight-specific ammonia excretion rate of E. areolatus increased, peaked at 2 to 12 h (depending on temperature), and returned to pre-feeding levels within 24 h. A similar pattern was observed for L. argentimaculatus, with a peak of TAN excretion being found 6 to 12 h after feeding. Stepwise multiple regression analysis indicated that weight-specific TAN excretion rates of both species increased with increasing temperature and ration (R, percent body wt. d-1): E. areolatus: TAN (mg N kg-1 d-1) = 22.8 · t - 28.8 · R 378.2 (r2 = 0.832, n = 24); L. argentimaculatus: TAN (mg N kg-1 d-1) = 22.9 · t - 25.4 · R 216.4 (r2= 0.611, n = 24). The effect of body weight on weight-specific postprandial TAN excretion was not significant in either species (p > 0.05). This study provides empirical data for estimating ammonia excretion of these two species under varying conditions. This has application for culture management.en_HK
dc.languageengen_HK
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/aquacultureen_HK
dc.relation.ispartofAquacultureen_HK
dc.subjectAmmonia excretionen_HK
dc.subjectGrouperen_HK
dc.subjectRationen_HK
dc.subjectSnapperen_HK
dc.subjectTemperatureen_HK
dc.titleEffects of body weight, water temperature and ration size on ammonia excretion by the areolated grouper (Epinephelus areolatus) and mangrove snapper (Lutjanus argentimaculatus)en_HK
dc.typeArticleen_HK
dc.identifier.emailLeung, KMY: kmyleung@hku.hken_HK
dc.identifier.emailWu, RSS: rudolfwu@hku.hken_HK
dc.identifier.authorityLeung, KMY=rp00733en_HK
dc.identifier.authorityWu, RSS=rp01398en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/S0044-8486(98)00404-9en_HK
dc.identifier.scopuseid_2-s2.0-0033556114en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0033556114&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume170en_HK
dc.identifier.issue3-4en_HK
dc.identifier.spage215en_HK
dc.identifier.epage227en_HK
dc.identifier.isiWOS:000077924800004-
dc.publisher.placeNetherlandsen_HK
dc.identifier.scopusauthoridLeung, KMY=7401860738en_HK
dc.identifier.scopusauthoridChu, JCW=7402881225en_HK
dc.identifier.scopusauthoridWu, RSS=7402945079en_HK

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats