Shaken not stirred: A molecular contribution to the systematics of genus <i>Mugil</i> (Teleostei, Mugilidae)

Heras, Sandra; Maltagliati, Ferruccio; Fernández, María Victoria; Roldán, Marı́a Inés

doi:10.1111/1749-4877.12173

Cited by 12 publications

(9 citation statements)

References 68 publications

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“…M. liza has been previously confused with Mugil cephalus and Mugil platanus (Heras et al, 2016;Whitfield et al, 2012). Mugil liza range was believed to be found as far as South of Rio de Janeiro in Brazil (Heras et al, 2009), and M. platanus was assumed to be a different mugilid species with a southern distribution.…”

Section: Introductionmentioning

confidence: 99%

Identification of potential fish stocks and lifetime movement patterns of Mugil liza Valenciennes 1836 in the Southwestern Atlantic Ocean

et al. 2017

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The mullet Mugil liza is the Mugilidae that lives southernmost in the western Atlantic Ocean. Knowledge about migration, movements and identification of stocks of this important fishery resource is scarce. Thus, we aim to study movement patterns and to identify the presence of different fish stocks in the southwestern region of the Atlantic 2 Ocean, using cumulative otolith shape morphometric and microchemical analyses of sagittae otoliths. Specimens (n = 99) were obtained in four coastal areas: Paranaguá Bay in Brazil, Samborombón Bay, Mar Chiquita Coastal Lagoon, and San Blas Bay in Argentina. Otolith shape indices (Circularity, rectangularity, aspect ratio, percentage occupied by sulcus, ellipticity and form factor) were used for stock identification analysis; and otolith microchemistry using LA-ICP-MS (Sr/Ca and Ba/Ca ratios chronological variation) was used for both the analysis of movement behaviors and the identification of fish stocks (otolith edge ratios). Morphometrical indices did not revealed a clear separation among areas. San Blas bay individuals presented otoliths tending to be longer than wider, with a more elliptic shape than the otoliths from other studied areas; also, did not share individuals with the most northern one, Paranaguá Bay in Brazil. The analysis of microchemical lifetime profiles revealed three types of behavior pattern: Type I: most frequent use of estuarine environments; Type II: a fluctuating behavior between estuarine and sea/high salinity waters; Type III: most frequent use of sea/high salinity habitats. Otolith edge analysis did not reveal differences among Sr/Ca and Ba/Ca ratios for the different areas. Thus, it cannot be assured that there is more than one stock in the studied region. Mugil liza revealed different environmental migratory behaviors in the Southwestern Atlantic Ocean showing a facultative use of estuarine waters; hence, the species appears to be mostly coastal with the use of low estuaries, as seen also by the Sr/Ca otolith cores ratios; differing from the general mugilid behavior previoulsy described.

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Section: Introductionmentioning

confidence: 99%

Identification of potential fish stocks and lifetime movement patterns of Mugil liza Valenciennes 1836 in the Southwestern Atlantic Ocean

et al. 2017

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“…Based on the analysis of mitochondrial DNA, Heras et al . () found two highly divergent M. liza populations: the northern population distributed from Cuba to Rio de Janeiro state, Brazil and the southern population distributed from Rio Grande do Sul state, Brazil, to Viedma, Argentina. Genetic structuring (Mai et al ., ) and analysis of δ 13 C and δ 18 O stable isotopes in otoliths of juvenile (Lemos et al ., ) showed that the southern population ranges from Argentina to São Paulo State, Brazil.…”

Section: Introductionmentioning

confidence: 99%

Coastal zone use and migratory behaviour of the southern population of Mugil liza in Brazil

Albuquerque

Lemos

et al. 2019

Journal of Fish Biology

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We analysed the ratios Sr:Ca and Ba:Ca in the otoliths of 55 adults of the southern population of Mugil liza in Brazil (Paraná to Rio Grande do Sul) to investigate its coastal zone use and migratory behaviour. All individual M. liza analysed had Sr:Ca and Ba:Ca values indicating that their birth was in the marine environment, which is consistent with the southern population migration to spawn in the ocean,. Juveniles exhibited at least three coastal use and recruitment strategies (contingents): the majority (89%) of M. liza juveniles migrated toward brackish water. They entered the estuary before completing the first year of life (64%) or after (25%) their first year of life. The remaining 11% did not appear to enter brackish or freshwater water as a nursery or at any point in their life cycle. Some adults returned to the estuary after spawning in the ocean but others (of both sexes) never returned to the estuary after spawning, remaining in the marine environment. The pattern of juvenile habitat use in the Brazilian southern population of M. liza seems to be recurrent throughout the extent of its distribution as a consequence of the reproductive spawning aggregation behaviour, which mixes all contingents (with marine or estuarine preferences).

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“…La distribución de Mugil liza era considerada hasta Río de Janeiro en Brasil (Heras et al, 2009), y se asumía que M. platanus era otro mugílido con distribución más austral (desde Río de Janeiro hasta la Patagonia) . En la actualidad, se ha establecido que M. platanus es un sinónimo de M. liza (Menezes et al, 2010;Heras et al, 2016). Con respecto a M. cephalus, ambas especies se ha propuesto como parte de un complejo (Durand et al, 2012b;Whitfield et al, 2012).…”

Section: Discussionunclassified

“…En la costa del Océano Atlántico sudoccidental se determinó, a través de la microquímica del sagitta, un solo stock pesquero de Mugil liza, reconociéndose una alta conectividad entre las zonas analizadas. La circulación oceanográfica en la región de estudio es a gran escala (Stramma y England, 1999), y no estaría afectando los desplazamientos de los individuos de M. liza ya que las barreras geográficas que podrían promover la diferenciación de stocks de esta especie, se encontrarían al norte delárea analizada en esta tesis (Sistema de afloramiento de Cabo Frío (Heras et al, 2016)). Estudios futuros de M. liza deberían extenderse a lo largo de su distribución desde las costas del Mar Caribe hasta la Patagonia Argentina.…”

Section: Discussionunclassified

“…-Ramirez et al (2014), mediante el uso de genes mitocondriales, sugirieron que M. liza se encuentra representada por una sola población en todo su rango de distribución, sin embargo no analizaronáreas más al norte de Venezuela. Finalmente, Heras et al (2016), mediante el análisis de la región control mitocondrial, reportaron que existirían dos poblaciones de M. liza altamente divergentes a lo largo de toda su distribución en el Océano Atlántico, una al norte de Río de Janeiro y otra al sur; región donde el sistema ascendente (upwelling) de Cabo Frío podría estar actuando como barrera geográfica de las mencionadas poblaciones restringiendo su flujo genético(Heras et al, 2016). Así, los resultados encontrados en este capítulo concuerdan con los reportados por los autores antes mencionados.…”

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Aplicación de los otolitos en el estudio de la interconectividad de stocks pesqueros de mugílidos de zonas costeras de la provincia de Buenos Aires, Argentina y de la costa Valenciana, España.

Fortunato¹,

Glenda²

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Otolith use in the study of fish stock connectivity of mugilids in coastal areas of Buenos Aires province, Argentina, and of Valencia, Spain. AbstractThe aim of this thesis was to identify mugilid stocks in the Southwestern Atlantic coast (25 • 30'S -40 • 32'S) and in the Mediterranean coast of the Valencia Community (38 • 08'N -40 • 38'N), and their connectivity using the morphology, morphometry and chemical composition of sagittae otoliths (complex carbonate structures located in the inner ear of the fish). Morphology of sagittal for 9 Mugilidae species was analyzed; thus, being able to differentiate them and generating an identification key for the species. Moreover, morphological patterns for family and genera were proposed.Given that otoliths vary along fish growth, ontogenetic patterns were identified for Mugil liza, Mugil cephalus and Liza ramada, describing, also, their biometric relations (standard fish length vs length-width of the otolith). In regard to the identification of fish stocks, by means of morphometrical indices (circularity, rectangularity, aspect ratio, percentage occupied by the sulcus, ellipticity and form factor) and otolith microchemistry (Sr/Ca and Ba/Ca ratios), different behavioral patterns related to habitat use of Mugil liza and Mugil cephalus we identified. For M. cephalus four behavioral patterns could be identified with differential use of marine, estuarine and freshwater environments; while for M. liza only three could be recognized. M. cephalus showed at least two fish stocks in the Valencian Mediterranean coast, whereas M. liza did not show michochemical differences that allowed recognizing more than one fish stock in the Southwestern Atlantic coast.In this context, otoliths turned out to be an important complementary tool to study the biology and ecology of mugilids, recognizing movements, habitat use and stock identification; allowing to generate proper management strategies for the species and the preferred used areas.Aplicació dels otòlits a l'estudi de la interconectividad d'estocs pesquers de mugílids de zones costaneres de la província de Buenos Aires, Argentina i de la costa Valenciana, Espanya. Resum L'objectiu d'aquesta tesi va ser determinar els estocs de mugílids presents en la costa Atlàntica sud-occidental (25 • 30'S -40 • 32'S) i en la costa Mediterrània de la Comunitat Valenciana (38 • 08'N -40 • 38'N) i la seua interconectividad, utilitzant la morfologia, morfometria i composició química dels otòlits sagitta (cossos policristal·lins compostos per carbonat de calci allotjats a l'oïda interna del peix). Es va analitzar la morfologia del sagita de 9 espècies de mugílids, la qual cosa va permetre diferenciar-los i generar una clau d'identificació específica. Així mateix, es van proposar patrons morfològics de l'otòlit a nivell de família i gènere. Atès que els otòlits varien durant el desenvolupament dels peixos, es van identificar patrons ontogenètics en relació amb el creixement del peix, per a Mugil liza, Mugil cephalus i Liza ramada, podent descriure's les re...

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Shaken not stirred: A molecular contribution to the systematics of genus Mugil (Teleostei, Mugilidae)

Cited by 12 publications

References 68 publications

Identification of potential fish stocks and lifetime movement patterns of Mugil liza Valenciennes 1836 in the Southwestern Atlantic Ocean

Identification of potential fish stocks and lifetime movement patterns of Mugil liza Valenciennes 1836 in the Southwestern Atlantic Ocean

Coastal zone use and migratory behaviour of the southern population of Mugil liza in Brazil

Aplicación de los otolitos en el estudio de la interconectividad de stocks pesqueros de mugílidos de zonas costeras de la provincia de Buenos Aires, Argentina y de la costa Valenciana, España.

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