Ändra sökning
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Stepwise function of natural growth for Scylla serrata in East Africa: a valuable tool for assessing growth of mud crabs in aquaculture
Visa övriga samt affilieringar
Antal upphovsmän: 82015 (Engelska)Ingår i: Aquaculture Research, ISSN 1355-557X, E-ISSN 1365-2109, Vol. 46, nr 12, s. 2938-2953Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Predicting growth is critical in aquaculture, but models of growth are largely missing for mud crab species. Here, we present the first model of natural growth in juvenile and adult mud crabs Scylla serrata from East Africa using a stepwise growth function based on data on intermoult periods and growth at moult from field mark-recapture, pond and laboratory studies. The results showed a sigmoid growth pattern in carapace width and suggest that S.serrata in East Africa will reach 300g and sexual maturity similar to 9.9months after settlement, and a commercial size of 500g after 12.4months. Analyses of the literature identified several issues with the common praxis to compare standard growth measures between aquaculture studies with different initial size or growing periods. Using the new growth function to estimate the proportional difference between modelled and obtained growth as an alternative method, we show that growth rates of S.serrata cultured in cage systems, which are dominant in East Africa, was <40% of the estimated natural growth and growth obtained in pond systems. The analysis also indicated that growth rates of S.serrata in Southeast Asia was over 50% higher compared with similar culture systems in East Africa, and that different species of mud crabs had large differences in growth rates. This study shows that growth in the present mud crab aquaculture systems in East Africa is below their expected potential. Further work is needed to identify the factors behind this observation.

Ort, förlag, år, upplaga, sidor
2015. Vol. 46, nr 12, s. 2938-2953
Nyckelord [en]
mud crab, moult increment, intermoult period, segmented growth, aquaculture
Nationell ämneskategori
Lantbruksvetenskap, skogsbruk och fiske
Identifikatorer
URN: urn:nbn:se:su:diva-123499DOI: 10.1111/are.12449ISI: 000363594500011OAI: oai:DiVA.org:su-123499DiVA, id: diva2:875681
Tillgänglig från: 2015-12-01 Skapad: 2015-11-27 Senast uppdaterad: 2018-05-15Bibliografiskt granskad

Open Access i DiVA

Fulltext saknas i DiVA

Övriga länkar

Förlagets fulltext

Sök vidare i DiVA

Av författaren/redaktören
Björkvik, EmmaTroell, Max
Av organisationen
Stockholm Resilience Centre
I samma tidskrift
Aquaculture Research
Lantbruksvetenskap, skogsbruk och fiske

Sök vidare utanför DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetricpoäng

doi
urn-nbn
Totalt: 23 träffar
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf