Estructura de la comunidad de peces en cuatro estuarios del Pacífico mexicano central

Sandoval-Huerta, Edgar Raúl; Madrigal-Guridi, Xavier; Escalera-Vázquez, Luis H.; Medina-Nava, Martina; Domínguez‐Domínguez, Omar

doi:10.7550/rmb.42105

Cited by 15 publications

(19 citation statements)

References 36 publications

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“…The differences in the expected ranges when compared with the estimates provided by other studies may be due to the variation in the sample sizes and the size ranges. The high number of individuals with small length was because estuaries are used as nurseries for fi shes such as L. nigrofasciata, Agonostomus monticola, M. curema, and E. currani (see Sandoval-Huerta et al 2014). …”

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Length–weight and length–length relations for 14 fish species from the central Mexican Pacific coast

Sandoval-Huerta¹,

Madrigal-Guridi

Domínguez‐Domínguez

et al. 2015

Acta Ichthyol. Piscat.

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(Günther, 1862). Values of b ranged from 2.912 to 3.432. The results revealed that length-weight relations for all species were highly correlated; likewise, length-length relations for all fi shes also showed high correlation. This study presents for the fi rst time, length-weight parameters for two species and length-length relations for six species.Keywords: Actinopterygii, ichthyofauna, estuaries, Michoacán, LWR, regression models, Mexico Length-weight relations (LWR) studies are used to predict the mean weight of fi sh when it is not possible to estimate it in fi eld. They are also used to calculate the standing stock biomass, to analyse the ontogenetic changes, and to study other aspects of fi sh population dynamics like growth rates and age structure (Quist et al. 2012). This type of information is not available for fi sh species inhabiting the coastal zone of the state of Michoacán, Mexico. Thus, the goal of this study was to report data of the length-weight (LWR) and standard length-total length (L-L) relations, for 14 fi sh species caught in estuaries from Michoacán (central Mexican Pacifi c).Fish specimens were collected in four estuaries from the south-eastern coast of Michoacán: Barra de Nexpa (18°05′07′′N, 102°47′18′′W), Teolán (18°4′19′′N, 102°43′51′′W), Mexcalhuacán (18°3′16′′N, 102°39′28′′W), and Barra de Pichi (17°58′28′′N, 102°19′33′′W). The fi shes were sampled bimonthly, from February 2010 through February 2011, using beach seines, cast nets, and trammel nets. Fish specimens, were deposited in the Aquatic Biology Laboratory of the Universidad Michoacana de San Nicolás de Hidalgo (UMSNH) to be identifi ed using specialized keys. Standard (SL) and total (TL) lengths were measured to the nearest 1 mm using a digital calliper and weights were determined to the nearest 0.01 g with an electronic balance.LWR was calculated from linear regression:log W = log a + b log SL Table 1, including number of specimens (n), size range, and b values. Estimations revealed that length-weight for all species were highly correlated, with the coeffi cient of determination (r 2 ) ranging from 0.94 to 0.99 (P < 0.001). The most represented family in our study was Eleotridae (three species). It was followed by Mugilidae and Gobiidae (two species each) while the remaining seven families were represented by a single species only (Table 2).Results were compared with those reported in other studies taken place in the Mexican Pacifi c coast (González-Acosta et al. 2004, Rojas-Herrera et al. 2009, Velázquez-Velázquez et al. 2009). Four of 14 LWRs (Lile nigrofasciata, Mugil curema, Lutjanus novemfasciatus, and Eucinostomus currani) and one of L-L relations (E. currani) were not within the expected range. The differences in the expected ranges when compared with the estimates provided by other studies may be due to the variation in the sample sizes and the size ranges. The high number of individuals with small length was because estuaries are used as nurseries for fi shes such as L. nigrofasciata, Agonostomus monticola, M. c...

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confidence: 99%

Length–weight and length–length relations for 14 fish species from the central Mexican Pacific coast

Sandoval-Huerta¹,

Madrigal-Guridi

Domínguez‐Domínguez

et al. 2015

Acta Ichthyol. Piscat.

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“…This situation can be attributed mainly to the registration of occasional species in the area, since many juvenile species were present in the samplings, suggesting that the area acts as a nursery and as a place of growth of many organisms. In the estuary of Michoacan, Sandoval-Huerta et al (2014) verified the occurrence of several juvenile individuals, evidencing the fish preference for these areas, in the initial stage of life.…”

Section: Silva Et Almentioning

confidence: 62%

Fish assemblage structure in a port region of the Amazonic coast

Silva

Torres

Castro

et al. 2018

Iheringia, Sér. Zool.

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The fish assemblage structure in a port area in São Marcos Bay (Amazonic coast) was evaluated based on the spatial and temporal distributions to identify potential changes in response to anthropic pressure increases associated with industrial and port activities in region. The samples were taken between March 2011 and November 2015. The ichthyofauna was represented by a total of 56 species, distributed in 15 orders and 29 families. Captures were dominated by Genyatremus luteus (Bloch, 1790), but Sciades proops (Valenciennes, 1840) was the most representative in terms of biomass. Seasonal distributions of fish assemblage did not reveal significant differences. However, there was a difference between catch sites, abundance, biomass and Shannon diversity index was higher in the Site 1 and evenness in Site 4. The analysis NMDS and the test ANOSIM between months and between sampling sites, based on species composition, revealed a seasonal differentiation associated with the rainy and drought months, as well as spatial differentiation, in function of a depth gradient and hydrodynamics, resulting from greater distance from mangrove areas. The low diversity recorded may be a reflection of port activities that historically occur in the area investigated. However, there was still a maintenance of regional diversity throughout the period under analysis. Thus, temporal and spatial scales become important for the detection and understanding of fish biodiversity in an Amazonian estuary, reflecting, the importance of mangroves for the maintenance of the ichthyofaunistic diversity in the area. In this context, the present study may subsidize possible conservation projects in the area since information of this nature is almost non-existent for estuarine fish from the Maranhão Amazon.

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“…Some authors (Sandoval‐Huerta, Madrigal‐Guridi, Escalera‐Vázquez, Medina‐Nava, & Domínguez‐Domínguez, ; Woodland, Secor, Fabrizio, & Wilberg, ) have stated that estuaries can be considered as the main breeding and nesting areas, being considered among the most productive ecosystems in the littoral zone. Consequently, F. polyommus likely prefers PCH for spawning, leading to the higher number of ripe individuals observed in this site.…”

Section: Discussionmentioning

confidence: 99%

“…Some authors (Sandoval-Huerta, Madrigal-Guridi, Escalera-Vázquez, Medina-Nava, & Domínguez-Domínguez, 2014;Woodland, Secor, Fabrizio, & Wilberg, 2012) have stated that estuaries can be considered as the main breeding and nesting areas, being considered among the most productive ecosystems in the littoral zone.…”

Section: Discussionmentioning

confidence: 99%

Reproductive traits of the “ocellated killifish” Floridichthys polyommus Hubbs, 1936 (Pisces: Cyprinodontidae) inhabiting estuary of the Champotón River (Campeche, Mexico)

2018

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Summary This study explores the reproductive biology and the influence of environmental factors on the reproductive traits of Floridichthys polyommus inhabiting the estuary of the Champoton River. The analysis included population structure, gonadal developmental stages, reproductive period, size at first sexual maturity, fecundity, sex ratio, and somatic indexes. A spatio‐temporal pattern in the distribution of the seven size classes was detected. The species showed a positive allometric growth. Sex ratio was 1.21:1 (females:males). Size at first maturity was 42.23 mm (females) and 47.8 mm (males). A higher absolute and relative fecundity was detected in Puente Champotón estuary (PCH) with lower salinities than those detected in the Delta (DE). The adaptive significance of this trait could be in response to the heavy osmotic constraint imposed by extreme salinities in the DE. Floridichthys polyommus prefers PCH for spawning, and as a result a higher number of ripe individuals was observed in this site, characterized by the highest nutrient levels, which can boost productivity and food availability for fish. Hepatosomatic index was negatively correlated with gonadosomatic index, suggesting energy transfer from the liver towards gamete production. Floridichthys polyommus exhibits an opportunistic strategy (early maturity, small oocytes, small clutches) suggesting that energy is allocated towards reproduction to compensate for the unpredictable hydrological conditions imposed by the estuary (particularly during the hurricane season). Floridichthys polyommus shows a reproductive strategy exhibited by fish living in unstable systems. A seasonal divergence was observed in the reproductive traits of F. polyommus, while differences between study sites were for fecundity.

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Estructura de la comunidad de peces en cuatro estuarios del Pacífico mexicano central

Cited by 15 publications

References 36 publications

Length–weight and length–length relations for 14 fish species from the central Mexican Pacific coast

Length–weight and length–length relations for 14 fish species from the central Mexican Pacific coast

Fish assemblage structure in a port region of the Amazonic coast

Reproductive traits of the “ocellated killifish” Floridichthys polyommus Hubbs, 1936 (Pisces: Cyprinodontidae) inhabiting estuary of the Champotón River (Campeche, Mexico)

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