Show simple item record

Share 
 
dc.contributor.authorAlmendras, Jesus Manolo E.
dc.date.accessioned2013-02-19T07:31:35Z
dc.date.available2013-02-19T07:31:35Z
dc.date.issued1994
dc.identifier.citationAlmendras, J. M. E. (1994). Ammonia excretion in Penaeus monodon postlarvae during handling and transfer. The Israeli Journal of Aquaculture-Bamidgeh, 46(1), 33-39.en
dc.identifier.issn0792-156X
dc.identifier.urihttp://hdl.handle.net/10862/1440
dc.description.abstractThe ammonia excretion rate was used as an index of the physiological state of Penaeus monodon poltlarvae (PL) by monitoring excretion rates after handling and transfer to physiologically different media. The ammonia excretion rate of postlarval P. monodon increased from a mean of 0.543 µg to 0.815 µg total NH3-N per mg dry wt per hour after transfer from 32 to 20 ppt sea water. PL transferred to 40 ppt showed a significant decrease in excretion rate to 0.423 µg total NH3-N per mg dry wt per hour. These changes in excretion rate after transfer to different salinities were only temporary since acclimatized PL showed only minor deviations in excretion rate from the control. PL transferred from normal (8.2) to low (7.2) pH had elevated ammonia excretion rates, from 0.591 µg to 0.733 µg total NH3-N per mg dry wt per hour, while those transferred to high pH (9.2) had excretion rates that dropped drastically to 0.259 µg. About 40% of the PL in high pH were moribund after the 150 min exposure. The ammonia excretion rate of PL after a 1 hour feeding was twice that of unfed PL during the first 15 min after transfer. This difference narrowed with time and was no longer significant at 75 min after transfer which also the duration that represented the postprandial surge in ammonia excretion after the 1 hour feeding.en
dc.language.isoenen
dc.publisherSociety of Israeli Aquaculture and Marine Biotechnologyen
dc.subjectPenaeus monodonen
dc.titleAmmonia excretion in Penaeus monodon postlarvae during handling and transferen
dc.typeArticleen
dc.citation.volume46
dc.citation.issue1
dc.citation.spage33
dc.citation.epage39
dc.citation.journalTitleThe Israeli Journal of Aquaculture-Bamidgehen
dc.subject.asfaammoniaen
dc.subject.asfaanimal physiologyen
dc.subject.asfastressen
dc.subject.asfaexcretionen
dc.subject.asfahandlingen
dc.subject.asfashrimp cultureen
dc.subject.scientificNamePenaeus monodonen


Files in this item

FilesSizeFormatView

This item appears in the following Collection(s)

  • AQD Journal Articles [1175]
    These papers were contributed by AQD staff to various national and international journals

Show simple item record