A standardized assessment of geographic variation in size at maturity of European lobster (Homarus gammarus L.) in the North East Atlantic

Matt Coleman; Stuart Jenkins; Matthew Garratt; Natalie Hold; Isobel Bloor; Joanne Porter; Oliver Tully; Michael  Bell

doi:10.1093/icesjms/fsac234

A standardized assessment of geographic variation in size at maturity of European lobster (Homarus gammarus L.) in the North East Atlantic

Matt Coleman, Stuart Jenkins, Matthew Garratt, Natalie Hold, Isobel Bloor, Joanne Porter, Oliver Tully, Michael Bell

School of Ocean Sciences

Heriot-Watt University

Research output: Contribution to journal › Article › peer-review

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Abstract

This study collates existing data on physiological maturity of female European Lobster Homarus gammarus across the North East Atlantic, together with new data from Orkney, Wales, and the Isle of Man. Using a standardised methodology, physiological estimates of size at maturity were undertaken using 1,309 lobsters from eleven locations. Size at 50% maturity varied between populations, ranging from 81.3 -94.1mm carapace length. Generalised Additive Models were used to characterise geographic patterns in size at maturity. Optimum monthly sea surface temperature (OPTIMNTH) had a significant and non-linear effect on the probability of being sexually mature at a given size in different populations. This is consistent with a thermal optimum previously demonstrated in absolute growth.

Original language	English
Article number	fsac234
Pages (from-to)	911-922
Journal	ICES Journal of Marine Science
Volume	80
Issue number	4
Early online date	21 Feb 2023
DOIs	https://doi.org/10.1093/icesjms/fsac234
Publication status	Published - May 2023

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10.1093/icesjms/fsac234Licence: CC BY

fsac234Final published version, 3.68 MBLicence: CC BY

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title = "A standardized assessment of geographic variation in size at maturity of European lobster (Homarus gammarus L.) in the North East Atlantic",

abstract = "This study collates existing data on physiological maturity of female European Lobster Homarus gammarus across the North East Atlantic, together with new data from Orkney, Wales, and the Isle of Man. Using a standardised methodology, physiological estimates of size at maturity were undertaken using 1,309 lobsters from eleven locations. Size at 50\% maturity varied between populations, ranging from 81.3 -94.1mm carapace length. Generalised Additive Models were used to characterise geographic patterns in size at maturity. Optimum monthly sea surface temperature (OPTIMNTH) had a significant and non-linear effect on the probability of being sexually mature at a given size in different populations. This is consistent with a thermal optimum previously demonstrated in absolute growth.",

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AU - Porter, Joanne

AU - Tully, Oliver

AU - Bell, Michael

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AB - This study collates existing data on physiological maturity of female European Lobster Homarus gammarus across the North East Atlantic, together with new data from Orkney, Wales, and the Isle of Man. Using a standardised methodology, physiological estimates of size at maturity were undertaken using 1,309 lobsters from eleven locations. Size at 50% maturity varied between populations, ranging from 81.3 -94.1mm carapace length. Generalised Additive Models were used to characterise geographic patterns in size at maturity. Optimum monthly sea surface temperature (OPTIMNTH) had a significant and non-linear effect on the probability of being sexually mature at a given size in different populations. This is consistent with a thermal optimum previously demonstrated in absolute growth.

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A standardized assessment of geographic variation in size at maturity of European lobster (Homarus gammarus L.) in the North East Atlantic

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