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Reproductive Cycle of the Echinoid Paracentrotus lividus (Lamarck, 1816) at Its Southern Population Limit (Canary Islands, Eastern Atlantic)

Girard, D ; Herrero, A ; Mora, J ; Hernandez, J C ; Brito, A ; Gonzalez, N ; Catoira, J L

Gulf of Mexico science, 2008-12, Vol.26 (2), p.149-149 [Periódico revisado por pares]

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  • Título:
    Reproductive Cycle of the Echinoid Paracentrotus lividus (Lamarck, 1816) at Its Southern Population Limit (Canary Islands, Eastern Atlantic)
  • Autor: Girard, D ; Herrero, A ; Mora, J ; Hernandez, J C ; Brito, A ; Gonzalez, N ; Catoira, J L
  • Assuntos: Echinoida ; Marine ; Paracentrotus lividus
  • É parte de: Gulf of Mexico science, 2008-12, Vol.26 (2), p.149-149
  • Notas: ObjectType-Article-2
    SourceType-Scholarly Journals-1
    content type line 23
    ObjectType-Feature-1
  • Descrição: The reproductive biology of the echinoid Paracentrotus lividus (Lamarck, 1816) is considered of high interest due to the value of its gonads which are appreciated as seafood, being this species is intensely harvested in many places. This echinoid is distributed throughout the Mediterranean and north-eastern Atlantic (from the British Isles to Canary Islands). The purpose of this research is to deepen the knowledge of the reproductive cycle at its southern geographical limit, where temperatures vary from 18C in winter to 25C in late summer, which would modify its reproductive strategy. Sea urchins were collected monthly at two sites in the Island of Tenerife (28N, 16S) and two in the Island of Gran Canaria (27N, 15S) from April 2006 to March 2007. Gonad index (GI) based in fresh weight and gonad histology were used to determine periods of maturity. Results show a high variability in GIs between sites. The histological approach points to a rapid gametogenesis, having several spawnings per year. This contrasts with the results obtained for the same species at higher latitudes (northern Brittany, France; west coast of Ireland or north-eastern Spain), where one or two maturation periods occur per year. We predict that this temperate species has the ability to extend its period of maturity and to spawn multiple times during the year due to warmer water temperatures, regardless of other environmental variables.
  • Idioma: Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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