Onderzoeksoutput

Welkom op het expertplatform!

Dit platform verschaft informatie en kennis omtrent de WL expertisedomeinen 'hydraulica en sediment', 'havens en waterwegen', 'waterbouwkundige constructies', 'waterbeheer' en 'kustbescherming' - gaande van WL medewerkers met hun expertise, het curriculum van deze instelling, tot publicaties, projecten, data (op termijn) en evenementen waarin het WL betrokken is.

Het WL onderschrijft het belang van "open access" voor de ontsluiting van haar onderzoeksresultaten. Lees er meer over in ons openaccessbeleid.

log in

• 
  People
• 
  Curriculum
• 
  Projects
• 
  Data sets
• 
  Publications
• 
  Events

[ meld een fout in dit record ]

mandje (0): toevoegen | toon

---

Assessment of Cryptophyceae ingestion by copepods using alloxanthin pigment: a caution Antajan, E.; Gasparini, S. (2004). Assessment of Cryptophyceae ingestion by copepods using alloxanthin pigment: a caution. Mar. Ecol. Prog. Ser. 274: 191-198. https://dx.doi.org/10.3354/meps274191 In: Marine Ecology Progress Series. Inter-Research: Oldendorf/Luhe. ISSN 0171-8630; e-ISSN 1616-1599 Is gerelateerd aan: Antajan, E.; Gasparini, S. (2004). Assessment of Cryptophyceae ingestion by copepods using alloxanthin pigment: a caution, in: Antajan, E. Responses of calanoid copepods to changes in phytoplankton dominance in the diatoms - Phaeocystis globosa dominated Belgium coastal waters. pp. 68-84, meer

---

Beschikbaar in	Auteurs
VLIZ: Open access 102572 [ download pdf ]

---

Trefwoorden

Cryptophyceae [WoRMS] Marien/Kust

Author keywords

alloxanthin; cryptophyceae; copepod ingestion; HPLC

---

Auteurs		Top
Antajan, E. Gasparini, S.

---

Abstract

The accessory pigment alloxanthin is a well-known taxonomic marker for Cryptophyceae in natural seawater. The use of alloxanthin to estimate in situ zooplankton grazing and selectivity on Cryptophyceae was studied using 2 dominant copepods of the southern North Sea, Temora longicornis and Centropages hamatus. High-performance liquid chromatography (HPLC) analyses of water samples and of freshly caught copepods, starvation experiments, and feeding experiments (shipboard bottle-incubations) were carried out. Although alloxanthin was always detected in copepod extracts, (1) no correlation was found with alloxanthin in seawater, and (2) no significant grazing on Cryptophyceae was observed. Results of our gut-evacuation experiments showed that at least 78% of the initial alloxanthin content of T. longicornis and C. hamatus remained after 90 min, whereas fucoxanthin and chloropigments decreased rapidly with time. Alloxanthin and astaxanthin esters were the only pigments remaining in the body of T. longicornis after several hours¹ starvation. It is concluded that most of the detected alloxanthin did not originate from the gut but from the body tissues. Our results suggest that alloxanthin is not suitable as a biomarker for quantitative or qualitative estimates of copepod grazing on Cryptophyceae.

---

Alle informatie in het Integrated Marine Information System (IMIS) valt onder het VLIZ Privacy beleid

Top | Auteurs

IMIS is ontwikkeld en wordt gehost door het VLIZ.