Reproductive migrations of the sex role reversed pipefish Nerophis lumbriciformis (Pisces; Syngnathidae)

• Type: Article in International Scientific Journal
• Date: 2006

Authors

Monteiro, NM (Author) Other; Berglund, A (Author) Other; Vieira, MN (Author) FCUP; Almada, VC (Author) Other

Journal

Title: Journal of Fish Biology

Vol. 69

Pages: 66-74

ISSN: 0022-1112

Publisher: Wiley-Blackwell

Indexing

ISI Web of Knowledge - 17 Citations

Scopus - 17 Citations

Other information

Authenticus ID: P-004-JXH

DOI: 10.1111/j.1095-8649.2006.01064.x

Abstract (EN): Using an individual identification technique, a population of worm pipefish Nerophis lumbriciformis was followed during 19 months, in order to determine the exact use of the intertidal and, considering the specific movement patterns of males and females, the mating system exhibited by this population. Field observations showed that the number of adults increased during the breeding season, with males arriving 1 month earlier than females. Furthermore, males and females presented distinct permanence periods, showing that the intertidal is used as a mating arena. It was also observed that both male and female worm pipefish mated repeatedly over the span of a reproductive season, but females exhibited shorter remating intervals. Also, females stayed for longer periods on the mating grounds, the intertidal zone, whereas males typically left for the subtidal after mating, usually returning within 2 months. These inter-sexual differences in the occupation of the intertidal suggest that females breed with different males but also that males accept eggs from various females since, on their return, a new group of mating partners was now available. Thus, N. lumbriciformis might be considered polygynandric. It is a clearly dimorphic species in spite of the observed polygynandry, suggesting that differences in remating intervals may be influential in determining the strength of sexual selection along with what may be expected from the polygynandrous mating system alone. (c) 2006 The Authors.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 9