Logo do repositório
 
Miniatura
Publicação

Somatic growth and gonadal development of Paracentrotus lividus (Lamarck, 1816) fed with diets of different ingredient sources

2021Artigo científico Acesso aberto
http://hdl.handle.net/10400.5/23790
Utilize este identificador para referenciar este registo.
Nome:Descrição:Tamanho:Formato: 
Lourenço et al 2021.pdf1.51 MBAdobe PDF Ver/Abrir

Autores

Lourenço, Sílvia
Cunha, Beatriz
Raposo, Andreia
Neves, Marta
Santos, Pedro M.
Gomes, Ana S.
Tecelão, Carla
Ferreira, Susana M.F.
Baptista, Teresa
Gonçalves, Sílvia C.

Orientador(es)

Resumo(s)

Sea urchins’ gonads are a delicacy highly appreciated worldwide. In Europe, Paracentrotus lividus is one of the most valuable edible sea urchin species and a desired target for aquaculture. One of the challenges of echinoculture is to increase the sea urchins’ growth rate during the on-growing phase and reducing the production cycle required to obtain sea urchins of commercial size (test diameter ≈ 50 mm). The present study aimed to evaluate the growth and gonad development of P. lividus urchins fed with three dry diets for 15 weeks. The diets were formulated with ingredients of three different sources: an algae-based, a fishmeal-based and a cereals-based diet. The somatic growth was assessed by biometric indicators like the linear and specific growth rates. The gonadal development was assessed by the gonadal somatic index (GSI), gametogenesis level, proximate composition and fatty acids profile. The results obtained showed high growth rates in all the three diets tested (0.44% per day). The sea urchins fed with the cereals diet presented the highest GSI (8.22%) with higher proportion of gonads in growing and premature stages. The proximate composition of the sea urchins’ gonads was significantly affected by diet and sea urchins’ sex, particularly the lipid content. Concomitantly, fatty acids (FA) profile of the gonads was influenced by both diet and sea urchins’ sex with saturated and polyunsaturated FA playing an important role in this differentiation

Descrição

Palavras-chave

echinoculture European sea urchin growth rate gonadal somatic index fatty acids

URI

http://hdl.handle.net/10400.5/23790

Contexto Educativo

Citação

Lourenço S, Cunha B, Raposo A, Neves M, Santos PM, Gomes AS, Tecelão C, Ferreira SMF, Baptista T, Gonçalves SC, Pombo A (2021). Somatic growth and gonadal development of Paracentrotus lividus (Lamarck, 1816) fed with diets of different ingredient sources. Aquaculture, 539:736589

Projetos de investigação

Unidades organizacionais

Fascículo

Editora

Elsevier

DOI

https://doi.org/10.1016/j.aquaculture.2021.736589

Coleções

ISA - Artigos em Revistas Internacionais

Licença CC

cclicense-by

Métricas Alternativas