| one publication added to basket [16370] | Immigration of larval plaice (Pleuronectes platessa L.) into the western Wadden Sea: a question of timing
Hovenkamp, F. (1991). Immigration of larval plaice (Pleuronectes platessa L.) into the western Wadden Sea: a question of timing. Neth. J. Sea Res. 27(3-4): 287-296
In: Netherlands Journal of Sea Research. Netherlands Institute for Sea Research (NIOZ): Groningen; Den Burg. ISSN 0077-7579; e-ISSN 1873-1406, more
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| Abstract |
Migration of larval plaice into a nursery area in the western Wadden Sea was monitored during three immigration seasons. Daily otolith increments were used to estimate age and hatch dates of the larvae, and the hatch dates were compared to egg-production curves. Different cohorts of larvae invaded the area, originating from different spawning grounds. During a cold year, most larvae probably came from the Western Channel, but during the two warm years most larvae originated from more northern spawning grounds. Settlement on a tidal flat showed a delayed response to immigration in the first part of the season, but a direct response later in the season. Length-frequency distributions of settled juveniles were compared to expected frequencies based on a simple growth model. It is argued that early in the season growth-related mortality may have been too high to ensure successful settlement, and that timing could be of significant importance for larval immigration to be successful. |
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