{"refrec":{"BRefID":259427,"RR":"Pinchuk, A.I.; Hopcroft, R.R. (2007). Seasonal variations in the growth rates of euphausiids (Thysanoessa inermis, T. spinifera, and Euphausia pacifica) from the northern Gulf of Alaska. Mar. Biol. (Berl.) 151(1): 257-269. http://dx.doi.org/10.1007/s00227-006-0483-1","BEntID":251434,"PublicFlag":1,"CheckedFlag":0,"wosflag":1,"vabbflag":null,"RefStringPartII":". Mar. Biol. (Berl.) 151(1): 257-269. http://dx.doi.org/10.1007/s00227-006-0483-1","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Pinchuk, A.I.; Hopcroft, R.R.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Pinchuk, A.I.; Hopcroft, R.R.","Englishabstract":"The euphausiids Thysanoessa inermis (Kroyer 1846), Thysanoessa spinifera (Holmes 1900), and Euphausia pacifica (Hansen 1911) are key pelagic grazers and also important prey for many commercial fish species in the Gulf of Alaska (GOA). To understand the role of the euphausiids in material flows in this ecosystem their growth rates were examined using the instantaneous growth rate (IGR) technique on the northern GOA shelf from March through October in 2001–2004. The highest mean molting increments (over 5% of uropod length increase per molt) were observed during the phytoplankton bloom on the inner shelf in late spring for coastal T. inermis, and on the outer shelf in summer for T. spinifera and more oceanic E. pacifica, suggesting tight coupling with food availability. The molting rates were higher in summer and lower in spring, for all species and were strongly influenced by temperature. Mean inter-molt periods calculated from the molting rates, ranged from 11 days at 5°C to 6 days at 8°C, and were in agreement with those measured directly during long-term laboratory incubations. Growth rate estimates depended on euphausiid size, and were close to 0 in early spring, reaching maximum values in May (0.123 mm day-1 or 0.023 day-1 for T. inermis) and July (0.091 mm day-1 or 0.031 day-1 for T. spinifera). The growth rates for E. pacifica remained below 0.07 mm day-1 (0.016 day-1) throughout the season. The relationship between T. inermis weight specific growth rate (adjusted to 5°C) and ambient chlorophyll-a concentration fit a Michaelis–Menten curve (r 2 = 0.48) with food saturated growth rate of 0.032 day-1 with half saturation occurring at 1.65 mg chl-a m-3, but such relationships were not significant for T. spinifera or E. pacifica.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Seasonal variations in the growth rates of euphausiids (Thysanoessa inermis, T. spinifera, and Euphausia pacifica) from the northern Gulf of Alaska","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2026-05-20 01:32:46.572006","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":null,"OtherDescriptors":null,"Notes":null,"AnaPub":2007,"MonPub":null,"DateUpdate":"2016-07-04","DateCreate":"2016-07-04","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000244485800023","VABBcode":null,"OpenAcc":0,"DOI":"10.1007/s00227-006-0483-1"},"refs":null,"anarec":{"AnaID":259427,"PubliDate":2007,"Pagination":"257-269","XtraPublOfAnaID":null,"ISBN":null,"Volume":"151","Issue":"1","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":43352,"SerRR":"Marine Biology: International Journal on Life in Oceans and Coastal Waters. Springer: Heidelberg; Berlin. ISSN 0025-3162; e-ISSN 1432-1793","StandardTitleSer":"Marine Biology: International Journal on Life in Oceans and Coastal Waters","ISSN":"0025-3162","AbbrevSer":"Mar. Biol. (Berl.)","StandardTitleMon":null,"StartPage":257,"Pages":13,"ToPubliDate":null,"BRefBibLvlCode":"S","SerNotes":null},"monrec":null,"serrec":null,"relations":null,"relationsRev":null,"addrec":null,"othpubs":null,"ownerships":null,"authors":[{"AutName":"Pinchuk","Firstname":"Alexei","Initials":"A.I.","Affiliation":null,"Discriminator":null,"CorporateFlag":0,"BEntID":251434,"AutID":233339,"OrderNr":1,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"InsAcronym":null,"InsFSN":null,"ORCID":null,"PersID":null,"InsID":null},{"AutName":"Hopcroft","Firstname":"Russell","Initials":"R.R.","Affiliation":null,"Discriminator":null,"CorporateFlag":0,"BEntID":251434,"AutID":66381,"OrderNr":2,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"InsAcronym":null,"InsFSN":null,"ORCID":null,"PersID":null,"InsID":null}],"mapdetails":null,"datasets":null,"monographs":null,"monparts":null,"serparts":null,"BEntOpen":null,"BEntPrivate":null,"availability":[{"BInstID":292675,"LibID":36,"BRefID":259427,"EmbargoDate":null,"FullEmbargoDate":null,"PhysMedID":16,"hasOCRd":1,"ShelfLocCode":"292675","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":"
Deze publicatie is enkel beschikbaar voor persoonlijk gebruik binnen de Innovocean site en mag op geen enkele manier verder worden verspreid.