A Standardised Assessment of Geographic Variation in Size at Maturity of European Lobster (Homarus gammarus L.) in the North East Atlantic

Matthew Coleman; Matthew Garratt; Natalie Hold; Isobel S. M. Bloor; Stuart Rees Jenkins; Joanne Porter; Oliver Tully; Michael C. Bell

A Standardised Assessment of Geographic Variation in Size at Maturity of European Lobster (Homarus gammarus L.) in the North East Atlantic

Matthew Coleman, Matthew Garratt, Natalie Hold, Isobel S. M. Bloor, Stuart Rees Jenkins, Joanne Porter, Oliver Tully, Michael C. Bell

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

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
Number of pages	25
Journal	ICES Journal of Marine Science
Publication status	Accepted/In press - 16 Nov 2022

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title = "A Standardised 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.",

author = "Matthew Coleman and Matthew Garratt and Natalie Hold and Bloor, {Isobel S. M.} and Jenkins, {Stuart Rees} and Joanne Porter and Oliver Tully and Bell, {Michael C.}",

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language = "English",

journal = "ICES Journal of Marine Science",

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T1 - A Standardised Assessment of Geographic Variation in Size at Maturity of European Lobster (Homarus gammarus L.) in the North East Atlantic

AU - Coleman, Matthew

AU - Garratt, Matthew

AU - Hold, Natalie

AU - Bloor, Isobel S. M.

AU - Jenkins, Stuart Rees

AU - Porter, Joanne

AU - Tully, Oliver

AU - Bell, Michael C.

PY - 2022/11/16

Y1 - 2022/11/16

N2 - 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.

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.

M3 - Article

JO - ICES Journal of Marine Science

JF - ICES Journal of Marine Science

SN - 1054-3139

ER -

A Standardised Assessment of Geographic Variation in Size at Maturity of European Lobster (Homarus gammarus L.) in the North East Atlantic

Abstract

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