SIZE DIFFERENCES, BY SEX, OF ADULT MARKET SQUID (LOLIGO OPALESCENS) AT-HARVEST IN DISTINCT TEMPERATURE AREAS NEAR THE CHANNEL ISLANDS
Abstract-We examined adult market squid, Loligo opalescens, from two significantly different temperature areas (northern and southern Channel Islands) of intense squid fishing within the Southern California Bight (SCB) to determine the effects of temperature on size at-harvest. Dorsal mantle length...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.1070.5088 2023-05-15T16:01:14+02:00 SIZE DIFFERENCES, BY SEX, OF ADULT MARKET SQUID (LOLIGO OPALESCENS) AT-HARVEST IN DISTINCT TEMPERATURE AREAS NEAR THE CHANNEL ISLANDS Annette E Henry Jenny D Mcdaniel Corey D Chan The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1070.5088 http://iws.org/CISProceedings/6th_CIS_Proceedings/Henry_et_al.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1070.5088 http://iws.org/CISProceedings/6th_CIS_Proceedings/Henry_et_al.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://iws.org/CISProceedings/6th_CIS_Proceedings/Henry_et_al.pdf text ftciteseerx 2020-04-26T00:20:58Z Abstract-We examined adult market squid, Loligo opalescens, from two significantly different temperature areas (northern and southern Channel Islands) of intense squid fishing within the Southern California Bight (SCB) to determine the effects of temperature on size at-harvest. Dorsal mantle length (DML) and body mass by sex, and female gonad mass were compared over a four-year period (1999)(2000)(2001)(2002). For males, there were no significant differences in mean monthly DML or body mass between the two areas. In contrast, there were significant differences in female DML and body mass. No difference was detected for female gonad mass, possibly due to sample size (n = 7). Temperature at-harvest was positively correlated with DML and body mass of males and females; however, an opposite and stronger trend was apparent when hatch temperature was correlated with the growth parameters (DML, body mass, and gonad mass). Gonad mass at-harvest was negatively correlated with water temperature at-hatch. Differences in squid size at-harvest relative to hatch temperature translate into differences in reproductive potential. We suggest that reduced reproductive potential from warm water events be considered in management strategies for harvest. Text DML Unknown |
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Abstract-We examined adult market squid, Loligo opalescens, from two significantly different temperature areas (northern and southern Channel Islands) of intense squid fishing within the Southern California Bight (SCB) to determine the effects of temperature on size at-harvest. Dorsal mantle length (DML) and body mass by sex, and female gonad mass were compared over a four-year period (1999)(2000)(2001)(2002). For males, there were no significant differences in mean monthly DML or body mass between the two areas. In contrast, there were significant differences in female DML and body mass. No difference was detected for female gonad mass, possibly due to sample size (n = 7). Temperature at-harvest was positively correlated with DML and body mass of males and females; however, an opposite and stronger trend was apparent when hatch temperature was correlated with the growth parameters (DML, body mass, and gonad mass). Gonad mass at-harvest was negatively correlated with water temperature at-hatch. Differences in squid size at-harvest relative to hatch temperature translate into differences in reproductive potential. We suggest that reduced reproductive potential from warm water events be considered in management strategies for harvest. |
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The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Annette E Henry Jenny D Mcdaniel Corey D Chan |
spellingShingle |
Annette E Henry Jenny D Mcdaniel Corey D Chan SIZE DIFFERENCES, BY SEX, OF ADULT MARKET SQUID (LOLIGO OPALESCENS) AT-HARVEST IN DISTINCT TEMPERATURE AREAS NEAR THE CHANNEL ISLANDS |
author_facet |
Annette E Henry Jenny D Mcdaniel Corey D Chan |
author_sort |
Annette E Henry |
title |
SIZE DIFFERENCES, BY SEX, OF ADULT MARKET SQUID (LOLIGO OPALESCENS) AT-HARVEST IN DISTINCT TEMPERATURE AREAS NEAR THE CHANNEL ISLANDS |
title_short |
SIZE DIFFERENCES, BY SEX, OF ADULT MARKET SQUID (LOLIGO OPALESCENS) AT-HARVEST IN DISTINCT TEMPERATURE AREAS NEAR THE CHANNEL ISLANDS |
title_full |
SIZE DIFFERENCES, BY SEX, OF ADULT MARKET SQUID (LOLIGO OPALESCENS) AT-HARVEST IN DISTINCT TEMPERATURE AREAS NEAR THE CHANNEL ISLANDS |
title_fullStr |
SIZE DIFFERENCES, BY SEX, OF ADULT MARKET SQUID (LOLIGO OPALESCENS) AT-HARVEST IN DISTINCT TEMPERATURE AREAS NEAR THE CHANNEL ISLANDS |
title_full_unstemmed |
SIZE DIFFERENCES, BY SEX, OF ADULT MARKET SQUID (LOLIGO OPALESCENS) AT-HARVEST IN DISTINCT TEMPERATURE AREAS NEAR THE CHANNEL ISLANDS |
title_sort |
size differences, by sex, of adult market squid (loligo opalescens) at-harvest in distinct temperature areas near the channel islands |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1070.5088 http://iws.org/CISProceedings/6th_CIS_Proceedings/Henry_et_al.pdf |
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DML |
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DML |
op_source |
http://iws.org/CISProceedings/6th_CIS_Proceedings/Henry_et_al.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1070.5088 http://iws.org/CISProceedings/6th_CIS_Proceedings/Henry_et_al.pdf |
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Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766397182274961408 |