Linking spawning ground extent to environmental factors - patterns and dispersal during the egg phase of four North Sea fishes

Hannes Höffle*, Cindy J. G. van Damme, Clive J. Fox, Stéphanie Lelièvre, Christophe Loots, Richard D.M. Nash, Sandrine Vaz, Peter J. Wright, Peter Munk

*Corresponding author for this work

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Abstract

Previous studies have shown that four commercially important demersal species, namely cod (Gadus morhua), haddock (Melanogrammus aeglefinus), whiting (Merlangius merlangus) and plaice (Pleuronectes platessa) spawn in distinct areas across the North Sea. Based on two comprehensive ichthyoplankton surveys in 2004 and 2009, the present study uses Generalized Additive Mixed Models (GAMMs) to delimit these spawning grounds using the distribution of recently spawned eggs, investigates their relationship to specific environmental conditions and examines egg dispersal during their development. Results indicate that presence/absence of early stage eggs is more related to temporal and topographic variables, while egg densities are closely linked with hydrography. Egg distribution patterns were relatively consistent during development and only changed near hatching. Compared to historic observations, the location of the spawning grounds appeared stable on the broad scale but centres of egg abundance varied between the surveyed years. Potential effects of long-term climate change and anthropogenic short-term disturbances, such as seismic surveys, on fish reproduction are discussed, pointing out the demand for multi-species studies on these issue
Original languageEnglish
JournalCanadian Journal of Fisheries and Aquatic Sciences
Volume75
Issue number3
Pages (from-to)357-374
ISSN0706-652X
DOIs
Publication statusPublished - 2018

Cite this

Höffle, Hannes ; van Damme, Cindy J. G. ; Fox, Clive J. ; Lelièvre, Stéphanie ; Loots, Christophe ; Nash, Richard D.M. ; Vaz, Sandrine ; Wright, Peter J. ; Munk, Peter. / Linking spawning ground extent to environmental factors - patterns and dispersal during the egg phase of four North Sea fishes. In: Canadian Journal of Fisheries and Aquatic Sciences. 2018 ; Vol. 75, No. 3. pp. 357-374.
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title = "Linking spawning ground extent to environmental factors - patterns and dispersal during the egg phase of four North Sea fishes",
abstract = "Previous studies have shown that four commercially important demersal species, namely cod (Gadus morhua), haddock (Melanogrammus aeglefinus), whiting (Merlangius merlangus) and plaice (Pleuronectes platessa) spawn in distinct areas across the North Sea. Based on two comprehensive ichthyoplankton surveys in 2004 and 2009, the present study uses Generalized Additive Mixed Models (GAMMs) to delimit these spawning grounds using the distribution of recently spawned eggs, investigates their relationship to specific environmental conditions and examines egg dispersal during their development. Results indicate that presence/absence of early stage eggs is more related to temporal and topographic variables, while egg densities are closely linked with hydrography. Egg distribution patterns were relatively consistent during development and only changed near hatching. Compared to historic observations, the location of the spawning grounds appeared stable on the broad scale but centres of egg abundance varied between the surveyed years. Potential effects of long-term climate change and anthropogenic short-term disturbances, such as seismic surveys, on fish reproduction are discussed, pointing out the demand for multi-species studies on these issue",
author = "Hannes H{\"o}ffle and {van Damme}, {Cindy J. G.} and Fox, {Clive J.} and St{\'e}phanie Leli{\`e}vre and Christophe Loots and Nash, {Richard D.M.} and Sandrine Vaz and Wright, {Peter J.} and Peter Munk",
year = "2018",
doi = "10.1139/cjfas-2016-0310",
language = "English",
volume = "75",
pages = "357--374",
journal = "Canadian Journal of Fisheries and Aquatic Sciences",
issn = "0706-652X",
publisher = "N R C Research Press",
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}

Linking spawning ground extent to environmental factors - patterns and dispersal during the egg phase of four North Sea fishes. / Höffle, Hannes; van Damme, Cindy J. G.; Fox, Clive J.; Lelièvre, Stéphanie; Loots, Christophe ; Nash, Richard D.M.; Vaz, Sandrine ; Wright, Peter J.; Munk, Peter.

In: Canadian Journal of Fisheries and Aquatic Sciences, Vol. 75, No. 3, 2018, p. 357-374.

Research output: Contribution to journalJournal articleResearchpeer-review

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T1 - Linking spawning ground extent to environmental factors - patterns and dispersal during the egg phase of four North Sea fishes

AU - Höffle, Hannes

AU - van Damme, Cindy J. G.

AU - Fox, Clive J.

AU - Lelièvre, Stéphanie

AU - Loots, Christophe

AU - Nash, Richard D.M.

AU - Vaz, Sandrine

AU - Wright, Peter J.

AU - Munk, Peter

PY - 2018

Y1 - 2018

N2 - Previous studies have shown that four commercially important demersal species, namely cod (Gadus morhua), haddock (Melanogrammus aeglefinus), whiting (Merlangius merlangus) and plaice (Pleuronectes platessa) spawn in distinct areas across the North Sea. Based on two comprehensive ichthyoplankton surveys in 2004 and 2009, the present study uses Generalized Additive Mixed Models (GAMMs) to delimit these spawning grounds using the distribution of recently spawned eggs, investigates their relationship to specific environmental conditions and examines egg dispersal during their development. Results indicate that presence/absence of early stage eggs is more related to temporal and topographic variables, while egg densities are closely linked with hydrography. Egg distribution patterns were relatively consistent during development and only changed near hatching. Compared to historic observations, the location of the spawning grounds appeared stable on the broad scale but centres of egg abundance varied between the surveyed years. Potential effects of long-term climate change and anthropogenic short-term disturbances, such as seismic surveys, on fish reproduction are discussed, pointing out the demand for multi-species studies on these issue

AB - Previous studies have shown that four commercially important demersal species, namely cod (Gadus morhua), haddock (Melanogrammus aeglefinus), whiting (Merlangius merlangus) and plaice (Pleuronectes platessa) spawn in distinct areas across the North Sea. Based on two comprehensive ichthyoplankton surveys in 2004 and 2009, the present study uses Generalized Additive Mixed Models (GAMMs) to delimit these spawning grounds using the distribution of recently spawned eggs, investigates their relationship to specific environmental conditions and examines egg dispersal during their development. Results indicate that presence/absence of early stage eggs is more related to temporal and topographic variables, while egg densities are closely linked with hydrography. Egg distribution patterns were relatively consistent during development and only changed near hatching. Compared to historic observations, the location of the spawning grounds appeared stable on the broad scale but centres of egg abundance varied between the surveyed years. Potential effects of long-term climate change and anthropogenic short-term disturbances, such as seismic surveys, on fish reproduction are discussed, pointing out the demand for multi-species studies on these issue

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DO - 10.1139/cjfas-2016-0310

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JO - Canadian Journal of Fisheries and Aquatic Sciences

JF - Canadian Journal of Fisheries and Aquatic Sciences

SN - 0706-652X

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