Genetic and morphological variation of Synaptura lusitanica Capello, 1868, along the Portuguese coast

Cabral, Henrique N.; Marques, J. F.; Rego, Ana Luísa; Catarino, Ana I.; Figueiredo, Joana; Garcia, Joana

doi:10.1016/s1385-1101(03)00060-1

Cited by 40 publications

(35 citation statements)

References 35 publications

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“…Tudela (1999) reported a high level of morphological heterogeneity in the European anchovy (Engraulis encrasicolus Linnaeus, 1758) from three sampling sites in the Mediterranean but, according to the electrophoretic analysis, they were genetically homogeneous. Similar results were found by Cabral et al (2003b) for the Portuguese sole, Synaptura lusitanica Capello, 1868 inhabiting two locations about 250 km apart on the Portuguese coast. Although phenotypic traits are highly variable and often have low heritabilities, reflecting substantial environmental influence (Lindsey, 1988), the overall low genetic differentiation found for H. didactylus should be investigated using more sensitive markers, such as mitochondrial DNA genes or microsatellites.…”

Section: Discussionsupporting

confidence: 80%

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Genetic and morphologic differentiation of the Lusitanian toadfish (<i>Halobatrachus didactylus</i>) between estuarine and coastal areas in Portugal

Marques¹,

Rego²,

Costa³

et al. 2006

Sci. Mar.

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SUMMARY: The Lusitanian toadfish, Halobatrachus didactylus (Bloch and Schneider, 1801), is distributed from the Ghana coast to the Iberian Peninsula, being particularly abundant on the south coast of Portugal. The differentiation of this species along the Portuguese coast was assessed through the analysis of 10 samples, considering morphological characters (20 morphometric and 16 meristic) and genetic markers (10 allozymes, 11 loci). Southern samples included estuaries and their adjacent coastal areas, given that this species inhabits both environments, whereas western samples only comprised estuaries. Morphometric and meristic data discriminant analysis evidenced some differentiation between estuarine and coastal populations. This was not entirely corroborated by the genetic analysis, which showed an overall pattern of low F ST (0.042) and Nei's genetic distance, even between geographically distant areas. However, higher values of these parameters were found between estuaries of the south coast and their adjacent coastal areas, suggesting that estuarine systems play a major role in such differentiation. Results are discussed regarding toadfish life-history pattern and Portuguese coast geomorphology, giving an insight into the biological and environmental factors influencing population sub-structuring.Keywords: Halobatrachus didactylus differentiation, allozymes, morphology, population structure, coastal areas RESUMEN: DIFERENCIACIÓN MORFOLÓGICA Y GENÉTICA DEL PEJESAPO (HALOBATRACHUS DIDACTYLUS) ENTRE ESTUARIOS Y ÁREAS COSTERAS DE PORTUGAL. -El pejesapo, Halobatrachus didactylus (Bloch y Schneider, 1801), está distribuido desde la costa de Ghana hasta la Península Ibérica, siendo particularmente abundante en la costa sur portuguesa. La diferenciación de esta especie a lo largo de la costa Portuguesa se ha evaluado a través del análisis de diez muestras, considerando caracteres morfológicos (20 características morfométricas y 16 merísticas) y genéticos (10 aloenzimas, 11 loci). Hacia el sur, las muestras incluyen estuarios y sus áreas costeras adyacentes, ya que esta especie habita ambos ambientes, mientras que las muestras del oeste están relacionadas sólo a estuarios. El análisis discriminante de los datos morfométricos y merísticos evidenciaron diferenciación entre poblaciones de estuarios y costeras, lo cual no fue enteramente corroborado por el análisis genético, el cual mostró un patrón general de bajo F ST (0.042) y distancia genética de Nei, incluyendo áreas geográficamente distantes. Sin embargo, valores más altos de estos parámetros fueron encontrados entre estuarios de la costa sur y sus áreas costeras adyacentes, sugiriendo que los sistemas de estuarios juegan un papel importante en tal diferenciación. Los resultados son discutidos considerando los patrones de historia de vida del pejesapo y la geomorfología de la costa portuguesa, dando una perspectiva de cómo los procesos biológicos y factores ambientales influyen la sub-estructuración poblacional.Palabras clave: Halobatrachus didactylus diferenciac...

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Section: Discussionsupporting

confidence: 80%

“…Spanakis et al, 1989;Alexandrino, 1996;Roldán et al, 2000;Cabral et al, 2003b, Pinheiro et al, 2005.…”

Section: Discussionmentioning

confidence: 99%

Genetic and morphologic differentiation of the Lusitanian toadfish (<i>Halobatrachus didactylus</i>) between estuarine and coastal areas in Portugal

Marques¹,

Rego²,

Costa³

et al. 2006

Sci. Mar.

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“…This differences in some meristic characteristics of poor cod from various geographical areas could be result of spatial segregation and different environmental conditions. It had been assumed earlier that variation in meristic and morphometric characteristics are entirely genetic (16 ), but recently it has been found that they have environmental and genetic components as well (17). The number of rays in the dorsal and anal fins from this study show greater range compared with results of Bini (11) and Jardas (2).…”

Section: Discussioncontrasting

confidence: 44%

Morphometric and meristic characteristics of poor cod, Trisopterus minutus (L. 1758), from the eastern central Adriatic Sea

Šantić¹

2018

Period Biol

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“…Besides swimming performance, it has been shown to affect growth, metabolism, time of hatching (Herzig and Winkler 1986), development (Herzig and Winkler 1986;Fukuhara 1990;Polo et al 1991;Gibson and Johnston 1995;Lein et al 1997), yolk absorption (Fukuhara 1990), muscle ontogeny and development (Johnston 1981(Johnston , 1993ontogeny of internal organs (Fukuhara 1990;Gibson and Johnston 1995), external morphology (Lindsey 1988;Wimberger 1992;Tudela 1999;Koumoundouros et al 2001a;Pakkasmaa and Piironen 2001;Cabral et al 2003;Silva 2003;Turan 2004), meristic characters (Turan 2004), appearance of skeletal deformities (Polo et al 1991;Koumoundouros et al 2001b), sex determination (Baroiller et al 1999;Pavlidis et al 2000;Koumoundouros et al 2002a) and the overall survival (Fukuhara 1990;Lein et al 1997) and lifespan of fish (Malek et al 2004). Although the effect of swimming temperature on the performance of fish has been studied thoroughly and in a wide range of species, there are only a few studies focusing on the impact of rearing temperature on the swimming performance of adult fish (i.e.…”

Section: Introductionmentioning

confidence: 99%

Effect of developmental temperature on swimming performance of zebrafish (Danio rerio) juveniles

2010

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It is widely known that water temperature affects the swimming capacity of fish. But the effect of the rearing temperature on the swimming ability of the fish at later stages, has not had similar attention. In this study, four populations of zebrafish, were reared in different water temperatures (22, 25, 28 and 31°C) and after being acclimatized in a common temperature (26.5°C) for over a month, they were subjected to swimming trials in order to evaluate the maximum relative critical velocity (RU crit ) in each case. Fish that were reared in 22°C showed statistically significant lower performance than the ones reared in 31°C (7.72 ±0.17 vs. 8.79±0.28, means ± S.E.). Possible explanations for the observed differentiation could be the effect of early life temperature on fish muscle ontogeny or on body shape.

show abstract

Genetic and morphological variation of Synaptura lusitanica Capello, 1868, along the Portuguese coast

Cited by 40 publications

References 35 publications

Genetic and morphologic differentiation of the Lusitanian toadfish (<i>Halobatrachus didactylus</i>) between estuarine and coastal areas in Portugal

Genetic and morphologic differentiation of the Lusitanian toadfish (<i>Halobatrachus didactylus</i>) between estuarine and coastal areas in Portugal

Morphometric and meristic characteristics of poor cod, Trisopterus minutus (L. 1758), from the eastern central Adriatic Sea

Effect of developmental temperature on swimming performance of zebrafish (Danio rerio) juveniles

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