Você está no menu de acessibilidade

Utilize este identificador para citar ou criar um link para este item: http://acervodigital.unesp.br/handle/11449/68462
Título: 
Vertical migration during tidal transport of megalopae of Necora puber in coastal shallow waters during daytime
Autor(es): 
Instituição: 
  • University of Plymouth
  • Universidade Estadual Paulista (UNESP)
  • Marine Ecology Laboratories A11
ISSN: 
0272-7714
Resumo: 
For meroplanktonic larvae that must settle in coastal areas, their successful return to the shore is determined largely by physical transport processes; however, many organisms perform vertical movements to aid successful recruitment. In this study, daytime tidal vertical migration of megalopae of the velvet swimming crab Necora puber was investigated across two different exposures in the shallow waters of Plymouth Sound. Crabs were collected using a plankton net at the surface and near the bottom during flood and ebb tides. Distribution of the pelagic postlarvae was patchy and the abundance varied spatially in tens and thousands of metres. In temporal scales, the annual pattern was dominated by low occurrence of megalopae, punctuated by episodic peaks of high abundance. Most megalopae were collected at the surface irrespective of the tidal phase. The effect of wave exposure on the vertical migration of megalopae was not clear, although there was a general higher abundance of megalopae on exposed shores. Daytime abundance in the water column appears to be regulated by the tidal cycle, as megalopae were more abundant during flood than ebb tides. Although the megalopae do not appear to make large vertical migrations, this behaviour should produce a net shoreward transport. © 2005 Elsevier Ltd. All rights reserved.
Data de publicação: 
1-Nov-2005
Citação: 
Estuarine, Coastal and Shelf Science, v. 65, n. 3, p. 396-404, 2005.
Duração: 
396-404
Palavras-chaves: 
  • Brachyura
  • Decapoda
  • Portunidae
  • Recruitment
  • Selective tidal stream transport
  • Velvet swimming crab
  • coastal water
  • larva
  • tidal current
  • vertical migration
  • Decapoda (Crustacea)
  • Necora puber
Fonte: 
http://dx.doi.org/10.1016/j.ecss.2005.05.022
Endereço permanente: 
Direitos de acesso: 
Acesso restrito
Tipo: 
outro
Fonte completa:
http://repositorio.unesp.br/handle/11449/68462
Aparece nas coleções:Artigos, TCCs, Teses e Dissertações da Unesp

Não há nenhum arquivo associado com este item.
 

Itens do Acervo digital da UNESP são protegidos por direitos autorais reservados a menos que seja expresso o contrário.