TY - JOUR
T1 - Influence of oceanographic conditions on the body shape variability of Scomber japonicus larvae from the western coast of the Baja California Peninsula
AU - Anaya-Godínez, Eduardo
AU - Silva-Segundo, Claudia A.
AU - Landaeta, Mauricio F.
AU - Funes-Rodríguez, René
AU - Trujillo-Millán, Oscar
AU - Blanco-Jarvio, Anidia
AU - Galván-Tirado, Carolina
AU - Valenzuela-Quiñonez, Fausto
AU - Marín-Enríquez, Emigdio
N1 - Publisher Copyright:
© 2022 John Wiley & Sons, Ltd.
PY - 2022/5
Y1 - 2022/5
N2 - Pacific chub mackerel (Scomber japonicus) is a relevant fishery resource shared among three countries in the northeastern Pacific. The spatiotemporal distribution of larvae has been related to the convergence of oceanographic mesoscale structures, which can generate considerable variability in the morphology of fish larvae. The main goal of this work was to describe the shape changes of larval S. japonicus and their relationship with oceanographic variability, through geometric morphometric analysis to assess the seasonal variability of 10 homologous landmarks distributed on the pre-anal section of 331 larvae from off the western coast of the Baja California Peninsula (WCBCP), Mexico (2006–2008). The results showed two principal morphotypes in Pacific chub mackerel larvae: The first morphotype had a more hydrodynamic body (longer and shallower head), influenced by increased sea surface flow and colder sea surface temperatures mainly during spring, and the second morphotype had robust larvae (shorter and deeper head) under slower current flow and warmer sea surface temperatures during winter and summer. We concluded that changes in larval body shape are influenced mainly by sea surface flow and sea temperatures, probably associated with the ability to reach higher swimming speeds during feeding success.
AB - Pacific chub mackerel (Scomber japonicus) is a relevant fishery resource shared among three countries in the northeastern Pacific. The spatiotemporal distribution of larvae has been related to the convergence of oceanographic mesoscale structures, which can generate considerable variability in the morphology of fish larvae. The main goal of this work was to describe the shape changes of larval S. japonicus and their relationship with oceanographic variability, through geometric morphometric analysis to assess the seasonal variability of 10 homologous landmarks distributed on the pre-anal section of 331 larvae from off the western coast of the Baja California Peninsula (WCBCP), Mexico (2006–2008). The results showed two principal morphotypes in Pacific chub mackerel larvae: The first morphotype had a more hydrodynamic body (longer and shallower head), influenced by increased sea surface flow and colder sea surface temperatures mainly during spring, and the second morphotype had robust larvae (shorter and deeper head) under slower current flow and warmer sea surface temperatures during winter and summer. We concluded that changes in larval body shape are influenced mainly by sea surface flow and sea temperatures, probably associated with the ability to reach higher swimming speeds during feeding success.
KW - California Current
KW - Pacific chub mackerel
KW - Scombridae
KW - ecomorphology
KW - fish larvae
KW - geometric morphometrics
KW - small pelagics
UR - http://www.scopus.com/inward/record.url?scp=85123754980&partnerID=8YFLogxK
U2 - 10.1111/fog.12574
DO - 10.1111/fog.12574
M3 - Artículo
AN - SCOPUS:85123754980
SN - 1054-6006
VL - 31
SP - 225
EP - 237
JO - Fisheries Oceanography
JF - Fisheries Oceanography
IS - 3
ER -