Molecular identification of Auxis spp. larvae (Pisces: Scombridae) from the Gulf of California: Solving morphological identification limits

Abstract The larvae of the Auxis genus are abundant in the Gulf of California during summer; however, their identification to the species level by morphological methods is a challenge. The goal of this study was to identify A. thazard and A. rochei larvae for first time, through molecular markers us...

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Autores principales:	Ochoa-Muñoz,María J., Díaz-Viloria,Noé, Sánchez-Velasco,Laura, Jiménez-Rosenberg,Sylvia P.A., Pérez-Enríquez,Ricardo
Lenguaje:	English
Publicado:	Universidad de Valparaíso. Facultad de Ciencias del Mar 2018
Materias:	Molecular identification COI larvae Auxis rochei Auxis thazard
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-19572018000200157
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spelling	oai:scielo:S0718-195720180002001572019-01-04Molecular identification of Auxis spp. larvae (Pisces: Scombridae) from the Gulf of California: Solving morphological identification limitsOchoa-Muñoz,María J.Díaz-Viloria,NoéSánchez-Velasco,LauraJiménez-Rosenberg,Sylvia P.A.Pérez-Enríquez,Ricardo Molecular identification COI larvae Auxis rochei Auxis thazard Abstract The larvae of the Auxis genus are abundant in the Gulf of California during summer; however, their identification to the species level by morphological methods is a challenge. The goal of this study was to identify A. thazard and A. rochei larvae for first time, through molecular markers using COI sequences of mtDNA, and look for distinctive morphological characteristics between species, mainly in pigmentation patterns. Larvae were obtained by zooplankton tows in 3 oceanographic cruises in the southern Gulf of California and adjacent waters. The presence of A. thazard and A. rochei larvae was genetically confirmed. The sequences of 7 larvae showed genetic divergences lower than 1% when were compared to sequences of A. thazard adults, while 15 larvae showed genetic divergences lower than 2% when where compared to sequences of A. rochei adults. Genetic divergences between both Auxis species were higher than 2%. These results suggest the spawning of both species in the Gulf of California. On the other hand, pigmentation patterns and morphometric characteristics, in all larval stages, did not permit the secure differentiation between species. Thus, the use of molecular identification by COI is recommended to identify Auxis larvae to the species level, as well as in other marine fish larvae collected in other regions of the world, that have identification troubles.info:eu-repo/semantics/openAccessUniversidad de Valparaíso. Facultad de Ciencias del MarRevista de biología marina y oceanografía v.53 n.2 20182018-08-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-19572018000200157en10.22370/rbmo.2018.53.2.1290
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Molecular identification COI larvae Auxis rochei Auxis thazard
spellingShingle	Molecular identification COI larvae Auxis rochei Auxis thazard Ochoa-Muñoz,María J. Díaz-Viloria,Noé Sánchez-Velasco,Laura Jiménez-Rosenberg,Sylvia P.A. Pérez-Enríquez,Ricardo Molecular identification of Auxis spp. larvae (Pisces: Scombridae) from the Gulf of California: Solving morphological identification limits
description	Abstract The larvae of the Auxis genus are abundant in the Gulf of California during summer; however, their identification to the species level by morphological methods is a challenge. The goal of this study was to identify A. thazard and A. rochei larvae for first time, through molecular markers using COI sequences of mtDNA, and look for distinctive morphological characteristics between species, mainly in pigmentation patterns. Larvae were obtained by zooplankton tows in 3 oceanographic cruises in the southern Gulf of California and adjacent waters. The presence of A. thazard and A. rochei larvae was genetically confirmed. The sequences of 7 larvae showed genetic divergences lower than 1% when were compared to sequences of A. thazard adults, while 15 larvae showed genetic divergences lower than 2% when where compared to sequences of A. rochei adults. Genetic divergences between both Auxis species were higher than 2%. These results suggest the spawning of both species in the Gulf of California. On the other hand, pigmentation patterns and morphometric characteristics, in all larval stages, did not permit the secure differentiation between species. Thus, the use of molecular identification by COI is recommended to identify Auxis larvae to the species level, as well as in other marine fish larvae collected in other regions of the world, that have identification troubles.
author	Ochoa-Muñoz,María J. Díaz-Viloria,Noé Sánchez-Velasco,Laura Jiménez-Rosenberg,Sylvia P.A. Pérez-Enríquez,Ricardo
author_facet	Ochoa-Muñoz,María J. Díaz-Viloria,Noé Sánchez-Velasco,Laura Jiménez-Rosenberg,Sylvia P.A. Pérez-Enríquez,Ricardo
author_sort	Ochoa-Muñoz,María J.
title	Molecular identification of Auxis spp. larvae (Pisces: Scombridae) from the Gulf of California: Solving morphological identification limits
title_short	Molecular identification of Auxis spp. larvae (Pisces: Scombridae) from the Gulf of California: Solving morphological identification limits
title_full	Molecular identification of Auxis spp. larvae (Pisces: Scombridae) from the Gulf of California: Solving morphological identification limits
title_fullStr	Molecular identification of Auxis spp. larvae (Pisces: Scombridae) from the Gulf of California: Solving morphological identification limits
title_full_unstemmed	Molecular identification of Auxis spp. larvae (Pisces: Scombridae) from the Gulf of California: Solving morphological identification limits
title_sort	molecular identification of auxis spp. larvae (pisces: scombridae) from the gulf of california: solving morphological identification limits
publisher	Universidad de Valparaíso. Facultad de Ciencias del Mar
publishDate	2018
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-19572018000200157
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Molecular identification of Auxis spp. larvae (Pisces: Scombridae) from the Gulf of California: Solving morphological identification limits

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