{"refrec":{"BRefID":5838,"RR":"<b>Papadopoulos, I.</b> (1995). Kenyaanse zeegrasvelden als voedselgronden voor de vroege levensstadia van belangrijke consumptievissen (Gerreidae en Lutjanidae) = Kenyan seagrass fields as feeding grounds for the early life stages of important consumption fish (Gerreidae and Lutjanidae). MSc Thesis. University of Gent, Zoology Institute, Marine Biology Section: Gent. 51 pp.","BEntID":5838,"PublicFlag":1,"CheckedFlag":0,"wosflag":0,"vabbflag":0,"RefStringPartII":". MSc Thesis. University of Gent, Zoology Institute, Marine Biology Section: Gent.  51 pp.","DocTypID":5,"DocType":"Book/Monograph","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Papadopoulos, I.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Papadopoulos, I.","Englishabstract":"This study, situated in Gazi Bay, Kenya, was aimed at describing the diet of juveniles of some commercially important tropical fish species and investigating whether the prey composition between different size classes within each species differed between sampling locations. The diet of following species was investigated: Gerres acinaces, Lutjanus argentimaculatus, L. fulviflamma en L. ehrenbergii. The ichthyofauna of the seagrass fields and the mangroves was sampled with a fine mesh ring net on the 17th  and 18th of August 1993 (low tide). Ten stations were covered between the two main creeks of the bay. The analysed fish species were common in station 2 (mouth West Creek), 4 (in the West Creek), 8 (between West Creek and East Creek) and EC (in the East Creek). All these stations were marked by a dens seagrass vegetation. In total, 276 stomach analysis were conducted. All investigated fish were juveniles (standard lengths between 20 and 135mm) From stomach analysis it appeared that the smallest individuals of Gerres acinaces  were somewhat selective feeders. Their diet was mainly composed of Harpacticoidea, added with Gammaridea and Tanaidacea. Expressed in gravimetric terms the harpacticids could be neglected in the diet and more energy-rich preys such as Polychaeta, Brachyura and Caridea were more important. Fish from larger size classes appeared to have a more varied diet were, next to Harpacticoidea, significant numbers of Oedicerotidae, Caridea, Gammaridae and Anthuridae were consumed. Heavy prey items such as crabs, Polychaeta, shrimp and Mysidacea provided enough energy. The diet of small (20-60mm) Lutjanus argentimaculatus  was numerically mainly composed of Harpacticoidea; however, gravimetrically gammarid amphipods, Tanaidacea, shrimp, Caprellidae, Cheatognathae and crabs dominated the diet. Fish from larger size classes preferred Gammaridae and Tanaidacea. Other energetically important preys were Crangonidae, Brachyura, Caprellidae en Stomatopoda. Lutjanus fulviflamma and L. ehrenbergii had a more varied diet were numerically seen UCM, Brachyura, Caridea, Crangonidae and Stomatopoda dominated. Gravimetrically, the diet was composed only of crabs and shrimp. To calculate filling indices the animal prey and detritus in the stomachs of Gerres acinaces were looked at separately. The filling indices for detritus increased with the size of the fish, while the vullingsindices for the animal prey (for both Gerres acinaces and the  Lutjanidae) were highest in the smaller size classes. Both numerical as gravimetrical stomach analyses data were analysed with multivariate statistical techniques. For Gerres acinaces the fish from station 2 and 4 were mostly separated, where the main prey in station 2 were Gammaridae and Tanaidacea and in station 4 were Harpacticidae. The fish of the smallest size classes from station 4 were mainly clustered. The fish from station 8 werediveided in both groups; their diet was characterized by both Gammaridae and Harpacticidae. All Lutjanus fulviflamma and L. ehrenbergii were clustered together en almost completely separated from L. argentimaculatus. The latter species preyed selectively on Harpacticoidea, Gammaridea and Tanaidacea. In contrast, L. fulviflamma and L. ehrenbergii and some L. argentimaculatus (with a standard length higher than 80 mm) appeared to have a more varied diet.","AbstractOtherLang":"Deze studie - gesitueerd in Gazi Bay, Kenya - had als doel het dieet van de juvenielen van enkele commercieel belangrijke tropische vissoorten te beschrijven en na te gaan of de prooisamenstelling varieerde tussen verschillende staalnamepunten en tussen verschillende grootteklassen binnen elke soort. Het dieet van volgende soorten werd onderzocht: <i>Gerres acinaces</i>, <i>Lutjanus argentimaculatus</i>, <i>L. fulviflamma</i> en <i>L. ehrenbergii</i>. De visfauna van de zeegrasvelden en de mangroves werd bemonsterd met een fijnmazige ringzegen op 17 en 18 augustus 1993 (springlaagtij). Er werd een tiental stations bestreken in en tussen de twee hoofdkreken van de baai. De geanalyseerde vissoorten waren algemeen in de stations 2 (monding westkreek), 4 (in de westkreek), 8 (tussen westkreek en oostkreek) en EC (in de oostkreek). Al deze stations waren gekenmerkt door een dense zeegrasvegetatie. Er werden in totaal 276 maaganalyses uitgevoerd AIle onderzochte vissen waren juvenielen (standaardlengtes tussen 20 en 135 mm) . Uit maaganalyses bleek dat de kleinste individuen van <i>Gerres acinaces</i> zich eerder selectief voedden. Hun dieet bestond hoofdzakelijk uit Harpacticoidea, aangevuld met Gammaridea en Tanaidacea. Uitgedrukt in gravimetrische termen werden de harpacticiden verwaarloosbaar in het dieet en werden energierijkere prooien zoals Polychaeta, Brachyura en Caridea belangrijker. De vissen uit de grotere lengteklassen bleken een gevarieerder dieet te hebben waarbij, naast Harpacticoidea, aanzienlijke aantallen Oedicerotidae, Caridea, Gammaridae en Anthuridae gegeten werden. Zware prooi-items zoals krabben, polychaeten, garnalen en aasgarnalen (Mysidacea) zorgden voor voldoende energie. Het dieet van kleine (20-60 mm) <i>Lutjanus argentimaculatus</i> bestond numeriek hoofdzakelijk uit Harpacticoidea; gravimetrisch domineerden gammaride amphipoden, tanaidaceeën, garnalen, caprelliden, chaetognathen en krabben. De vissen uit de grotere lengteklassen hadden eerder een voorkeur voor Gammaridea en Tanaidacea. Andere energetisch belangrijke prooien waren Crangonidae, Brachyura, Caprellidae en Stomatopoda. <i>Lutjanus fulviflamma</i> en <i>L. ehrenbergii</i> hadden een gevarieerder dieet waarbij numeriek vooral UCM, Brachyura, Caridea, Crangonidae en Stomatopoda domineerden. Gravimetrisch bestond bet dieet bijna uitsluitend uit krabben en gamalen. Voor het berekenen van de vullingsindices werden de dierlijke prooien en het detritus in de magen van <i>Gerres acinaces</i> apart beschouwd. De vullingsindices voor het detritus stegen met de grootte van de vis, terwijl de vullingsindices voor de dierlijke prooien (zowel bij <i>Gerres acinaces</i> als bij de Lutjanidae) het grootst waren in de kleinere lengteklassen.Zowel de numerieke als de gravimetrische maaganalysegegevens werden verwerkt met multivariate statistische technieken. Bij Gerres acinaces werden de vissen afkomstig van station 2 en station 4 grotendeels gescheiden gegroepeerd, waarbij in station 2 vooral gepredeerd werd op Gammaridea en Tanaidacea en in station 4 vooral op harpacticiden. De vissen uit de kleinste lengteklasse van station 4 lagen grotendeels samen geklusterd. De vissen van station 8 werden over beide groepen verdeeld; hun dieet werd gekenmerkt door zowel gammariden als harpacticiden. Alle <i>Lutjanus fulviflamma</i> en <i>L. ehrenbergii</i> werden samen geklusterd en ze werden vrijwel volledig gescheiden van de <i>L. argentimaculatus</i>. Deze laatsten predeerden selectief opHarpacticoidea, Gammaridea en Tanaidacea. <i>L. fulviflamma</i> en <i>L. ehrenbergii</i> daarentegen bleken een gevarieerder dieet te hebben, alsook een aantal L. argentimaculatus met een standaardlengte groter dan 80 mm.","BibLvlCode":"M","StandardTitle":"Kenyaanse zeegrasvelden als voedselgronden voor de vroege levensstadia van belangrijke consumptievissen (Gerreidae en Lutjanidae) = Kenyan seagrass fields as feeding grounds for the early life stages of important consumption fish (Gerreidae and Lutjanidae)","OrigTitleLangCode":"nl","OrigTitleLangCodeExtended":"dut","OrigTitleLangID":41,"DateLastModified":{"date":"2025-07-02 08:33:14.980000","timezone_type":1,"timezone":"+00:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":"diet composition","OtherDescriptors":null,"Notes":null,"AnaPub":null,"MonPub":1995,"DateUpdate":"2020-04-27","DateCreate":"2001-01-26","SecASFANote":null,"ConfID":null,"PeerRev":0,"VlizCoreFlag":1,"WoScode":null,"VABBcode":null,"OpenAcc":0},"refs":null,"anarec":null,"monrec":{"MonID":5838,"ISBN":null,"PubliDate":1995,"IssueDate":null,"Volume":null,"Issue":null,"Pagination":"51","Place":"Gent","Edition":null,"BRefXtra":null,"BRefXtraRR":null,"SerID":null,"SerRR":null,"Ser2BRefID":null,"Ser2RR":null,"StandardTitleSer":null,"ISSN":null,"AbbrevSer":null,"Degree":"MSc","ThesisID":5838,"InsID":471,"Acronym":"UGent","FullStandardName":"Universiteit Gent","ToPubliDate":null,"SerNotes":null,"eISBN":null,"Pages":51},"serrec":null,"relations":null,"relationsRev":null,"addrec":null,"othpubs":null,"ownerships":null,"authors":[{"AutName":"Papadopoulos","Firstname":null,"Initials":"I.","Affiliation":null,"Discriminator":null,"CorporateFlag":0,"BEntID":5838,"AutID":3138,"OrderNr":1,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"InsAcronym":null,"InsFSN":null,"ORCID":null,"PersID":31896,"InsID":null}],"mapdetails":null,"datasets":null,"monographs":null,"monparts":null,"serparts":null,"BEntOpen":null,"BEntPrivate":null,"availability":[{"BInstID":226661,"LibID":36,"BRefID":5838,"EmbargoDate":null,"FullEmbargoDate":null,"PhysMedID":16,"hasOCRd":1,"ShelfLocCode":"226661","RFID":null,"PaidValue":null,"Medium":"Server","Description":"Interne VLIZ documenten","Acronym":"VLIZ","Library":"Vlaams Instituut voor de Zee","DutchTerm":"Non-open access","URL":null,"ClassifID":228,"Classification":"Non-open access","ReqLink":1,"ClassifTypID":3,"URLLocation":"https://www.vliz.be/imisdocs/publications/","SubDir":1,"InternalReq":1,"LoggedInReq":1,"Disclaimer":"Disclaimer_VLIZ_Intern","DutchDisclaimer":"<p>Deze publicatie is enkel beschikbaar voor persoonlijk gebruik binnen de Innovocean site <br />en mag op geen enkele manier verder worden verspreid.</p>","FileFormat":".pdf","FileDescr":"pdf","InsPub":1,"InsID":36,"FileFormID":6,"LendableFlag":1,"PublicFlag":1,"orderLib":"A","Notes":null,"AccConID":null,"AccessConstraint":null,"LicURL":null}],"litstyles":[{"LitStyID":7,"Style":"Dissertation"}],"thespers":[{"PersID":19,"Surname":"Vincx","Firstname":"Magda","Initials":"M.","Role":"Promotor"}],"arch2discl":null,"SERpubls":null,"MONpubls":null,"pictures":[],"thestermsPath":[{"ThesaurusTerm":"ISW, Kenya, Gazi Bay","ThestID":185408,"Acronym":"ASFA_GEOT","ThesTermPath":"ISW, Kenya, Gazi Bay"}],"thestermsASFA":[{"ThesaurusTerm":"ISW, Kenya, Gazi Bay"}],"taxtermsASFA":[{"TaxTerm":"Gerres acinaces"},{"TaxTerm":"Lutjanus argentimaculatus"},{"TaxTerm":"Lutjanus ehrenbergii (Peters, 1869)"},{"TaxTerm":"Lutjanus fulviflamma"}],"geotermsASFA":[{"GeoTerm":"Maftaha Bay"}],"collections":null,"conf":null,"proj":null,"Physdatasets":null,"spcols":{"801":{"SpName":"Belgian Researchers on Kenyan topics - 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