Open WL Archief (OWA)

Over het archief

Het OWA, het open archief van het Waterbouwkundig Laboratorium heeft tot doel alle vrij toegankelijke onderzoeksresultaten van dit instituut in digitale vorm aan te bieden. Op die manier wil het de zichtbaarheid, verspreiding en gebruik van deze onderzoeksresultaten, alsook de wetenschappelijke communicatie maximaal bevorderen.

Dit archief wordt uitgebouwd en beheerd volgens de principes van de Open Access Movement, en het daaruit ontstane Open Archives Initiative.

Basisinformatie over ‘Open Access to scholarly information'.

[ meld een fout in dit record ]

mandje (0): toevoegen | toon

---

What can size distributions within cohorts tell us about ecological processes in fish larvae? Folkvord, A.; Fiksen, Ø.; Høie, H.; Johannessen, A.; Otterlei, E.; Vollset, K.W. (2009). What can size distributions within cohorts tell us about ecological processes in fish larvae? Sci. Mar. (Barc.) 73(Suppl. 1): 119-130. https://dx.doi.org/10.3989/scimar.2009.73s1119 In: Scientia Marina (Barcelona). Consejo Superior de Investigaciones Científicas. Institut de Ciènces del Mar: Barcelona. ISSN 0214-8358; e-ISSN 1886-8134, meer

---

Beschikbaar in	Auteurs
VLIZ: Open access 154838 [ download pdf ]

---

Trefwoorden

Availability > Food availability Concentration Environmental effects > Temperature effects Growth rate Interspecific relationships > Predation Life history Population characteristics > Population structure > Size distribution Population functions > Mortality Marien/Kust

Author keywords

growth strategies; life history; mortality; prey concentration; sizedistribution; temperature; trade-off

---

Auteurs		Top
Folkvord, A. Fiksen, Ø. Høie, H.	Johannessen, A., meer Otterlei, E. Vollset, K.W.

---

Abstract

Marine fish larvae are subject to variable environments, which is probably reflected in their growth and survival rates. Mortality rates are generally high and size-dependent. At the species level, these mortality rates are usually accompanied by correspondingly high growth rates. Here we provide examples from experimental studies with Atlantic cod (Gadus morhua) and Atlantic herring (Clupea harengus) larvae, in which multiple cohorts were followed over time. Body size, prey concentrations, and temperature are shown to influence growth rates. We present a method based on Cumulative size distributions (CSDs) for visualizing variability of sizes within cohorts over time. Analysis of CSDs revealed size-selective mortality and variations among populations in size- and temperature-dependent growth throughout ontogeny. We found that cod larvae consistently exhibit higher growth rates than herring larvae. While cod larvae may have an advantage over herring larvae when food availability is high, herring were more able to survive at low food concentrations than cod. Cod and herring seem to represent two growth strategies: cod larvae are relatively small at hatching and a high growth rate appears to be a prerequisite for success, whereas herring larvae are initially large, but grow more slowly.

---

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.