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The breeding ecology of the pipefish Nerophis lumbriciformis and its relation to latitude and water temperature

Published online by Cambridge University Press:  10 December 2001

N. Monteiro ,
V.C. Almada ,
A.M. Santos  and
M.N. Vieira
N. Monteiro
Affiliation:
Departamento de Zoologia e Antropologia, Faculdade de Ciências, Universidade do Porto, Praça Gomes Teixeira, 4099-002 Porto, Portugal
V.C. Almada
Affiliation:
Instituto Superior de Psicologia Aplicada, Rua Jardim do Tabaco, 44, 1149-041 Lisboa, Portugal
A.M. Santos
Affiliation:
Departamento de Zoologia e Antropologia, Faculdade de Ciências, Universidade do Porto, Praça Gomes Teixeira, 4099-002 Porto, Portugal
M.N. Vieira
Affiliation:
Departamento de Zoologia e Antropologia, Faculdade de Ciências, Universidade do Porto, Praça Gomes Teixeira, 4099-002 Porto, Portugal
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Abstract

The breeding season of Nerophis lumbriciformis (Pisces: Syngnathidae), has not yet been determined for the southernmost part of its range. A total of 863 individuals was examined between March 1997 and November 1999. In Portugal, the breeding season of this species occurs throughout the year, with a marked reduction during summer and autumn, whilst in Britain it occurs from May to September. Despite these temporal differences, the water temperature at which breeding takes place is similar in the two areas (13–16°C). Together with preliminary laboratory observations with animals kept at different temperatures, these data support the hypothesis that the decrease in breeding activity during summer and autumn in Portugal is due to an inhibitory effect of high water temperature.

Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 81 , Issue 6 , December 2001 , pp. 1031 - 1033
Copyright
© 2001 Marine Biological Association of the United Kingdom

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