Trophic Partitioning of Sympatric Zooplanktivorous Silverside in a Tropical Shallow Lake: Fish Morphometry and Diet Composition

Moncayo‐Estrada, Rodrigo; Lind, Owen T.; Escalera-Gallardo, Carlos

doi:10.1643/ce-08-024

Cited by 9 publications

(14 citation statements)

References 20 publications

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“…Our results suggest that the restoration of littoral habitat (wetland zones) represent a key management need to preserve ecosystem processes in Lago de Pátzcuaro. This would support the recommendations that the restoration of vegetated littoral zones could provide habitat regeneration for native small fish species and improve water quality in Lake Chapala (Moncayo-Estrada et al, 2010). We support the suggestion made by OrbeMendoza et al (2002) that it is urgent to implement practices that offer fishermen a subsistence and sustainable fishery in the short term.…”

Section: Discussionsupporting

confidence: 87%

“…According to Seilheimer & Chow-Fraser (2006), top predators (typically long-lived species) are susceptible to long-term physical and chemical habitat alterations. Other studies have argued that lakes with high clay turbidity are more beneficial to planktivorous fish than piscivorous predators for successful feeding (De Robertis et al, 2003;Moncayo-Estrada et al, 2010). In our study, small silversides (Chirostoma spp.)…”

Section: Discussionmentioning

confidence: 56%

“…Small silversides are typically open water fish using pelagic zones as feeding and reproductive habitat MercadoSilva et al, 2002). These small fishes feed mainly on pelagic zooplankton and use a variety of reproductive substrates (gill nets, buoys, floating branches) that can be located far from the littoral zone (Rojas-Carrillo, 2006;Moncayo-Estrada et al, 2010). Silverside fishes represented more than 90% of the fish collected in our sampling efforts, which could indicate that species able to utilize non-littoral habitats have an advantage over species requiring now degraded littoral zones.…”

Section: Discussionmentioning

confidence: 99%

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Long term changes in the fish fauna of Lago de Patzcuaro in Central Mexico

Ramírez-Herrejón¹,

Zambrano²,

Mercado‐Silva³

et al. 2014

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ABSTRACT. Fish assemblages of lakes from central México have been altered as a result of water overexploitation, pollution, habitat fragmentation, and introduction of exotic species. Patterns and the extent of change in most of these systems are poorly documented. This paper presents a long-term study of changes in the fish fauna of Lago de Pátzcuaro (State of Michoacán, México). Long-term information (years 1900-2010) of fish communities was used to explore trends in the composition of the fish community and their ecological attributes. Trends across time for each fish guild were evaluated through a multivariate analysis of variance. Native species dominated total species richness over the entire study period, but exotic fish comprised 46% of the community in the 2010s. During the last 110 years, there has been a decline in the number of carnivore species and an increase of omnivore species in the Lago de Pátzcuaro fish community. Sensitive species have disappeared from the lake and species tolerant to environmental degradation have increased from 13 to 61%. The data suggest that anthropic effects on the environmental condition of Lago de Pátzcuaro are associated with the loss of ecosystem elements (fish species) and ecosystem processes (species interactions). Ecological restoration and conservation programs must include information of these long term studies to be more effective in their efforts. Keywords: shallow lake, environmental degradation, ecological guilds, historical analysis, exotic species, México.Cambios a largo plazo en la fauna de peces del Lago de Pátzcuaro en México central RESUMEN. El ensamble de las comunidades de peces en los lagos de México Central ha sido alterado como resultado de la sobre-explotación del agua, contaminación, fragmentación de hábitat y la introducción de especies exóticas. Los patrones y la extensión de los cambios en la mayoría de estos ecosistemas están escasamente documentados. Este artículo presenta un estudio a largo plazo de los cambios en la fauna de peces del Lago de Pátzcuaro (Estado de Michoacán, México). La información a largo plazo (años 1900-2010) de las comunidades de peces fue usada para explorar las tendencias en la composición específica y los atributos ecológicos de las especies en la comunidad. Las tendencias a través del tiempo para cada gremio de peces fueron evaluadas mediante análisis de varianza multivariado. Las especies nativas dominaron a través de todo el periodo de estudio, pero las especies exóticas alcanzaron 46% de la comunidad en la década del 2010. Durante los últimos 110 años, ha habido disminución en el número de especies carnívoras e incremento de las especies omnívoras en este ecosistema. Las especies intolerantes han desaparecido del lago y las especies tolerantes a la degradación ambiental han incrementado de 13 a 61%. Los datos sugieren que los efectos antrópicos sobre la condición ambiental del Lago de Pátzcuaro se asocian con la pérdida de elementos (especies de peces) y procesos (interacciones entre las especies) del ecosistema....

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Section: Discussionsupporting

confidence: 87%

Section: Discussionmentioning

confidence: 56%

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Long term changes in the fish fauna of Lago de Patzcuaro in Central Mexico

Ramírez-Herrejón¹,

Zambrano²,

Mercado‐Silva³

et al. 2014

lajar

View full text Add to dashboard Cite

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“…Fishes of the genus Chirostoma are known to be specialist that feed on invertebrates (Rosas 1976, García de León and Pérez-Velázquez 1996, Ross et al 2006, Moncayo-Estrada et al 2010. However, Chirostoma fishes in this study behaved as predacious with the capacity to behave as generalist during dry season, showing the aptitude to find its food items in different habitats (bottom, periphyton, surface and nekton) and in different trophic webs (nekton, periphyton and terrestrial).…”

Section: Discussionmentioning

confidence: 60%

Trophic interrelations between introduced common carp, Cyprinus carpio (Actinopterygii: Cypriniformes: Cyprinidae), and fish community in a eutrophic shallow lake

Ramírez-Herrejón¹,

Moncayo‐Estrada²,

Balart³

et al. 2014

Acta Ichthyol. Piscat

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“…However, in critical low volume conditions the avoidance of interactive segregation and competition appears to be related to a different resource dimension (food and reproduction grounds). Examples include life-history variations which were related to differences in consumption for distinct predator size classes, and resource partitioning of the same food items such as the differential consumption of plankton prey taxa by the different Chirostoma species (Moncayo-Estrada et al, 2010) (Table 1).…”

Section: Discussionmentioning

confidence: 99%

Spatial patterns of zooplanktivore Chirostoma species (Atherinopsidae) during water-level fluctuation in the shallow tropical Lake Chapala, Mexico: seasonal and interannual analysis

2011

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This study addresses the influence of water-level fluctuations on fish distribution at two temporal scales: seasonal (dry and rainy) and interannual (low and high volume conditions). The analysis of abundance relationships among three zooplanktivore Chirostoma species at fifteen sites in Lake Chapala, Mexico, revealed the significant influence of contrasting conditions (P=0.0002). Seasonally, segregation was more related to species dominance in the dry season and exclusively related to environmental characteristics in the rainy season. Interanually, biotic influence occurred in the shallowest and the deepest episodes of the lake. Environmental characteristics influenced species distribution when the lake reached 25% of its volume. Site, depth, temperature, and salinity were the leading factors influencing fish distribution. These results emphasize the necessity to implement different management strategies according to lake volume, particularly when a critical threshold is reached.El presente estudio describe la influencia que tiene la fluctuación del nivel del agua en la distribución de los peces a dos diferentes escalas: estacional (estiaje y lluvias) e interanual (condiciones de bajo y alto volumen). El análisis de las relaciones de abundancia entre tres especies zooplanctófagas de Chirostoma en quince sitios del Lago de Chapala, México, reveló una influencia estadísticamente significativa en las condiciones contrastantes (P=0.0002). Estacionalmente, la segregación estuvo más relacionada a la dominancia de las especies en la época de estiaje y exclusivamente relacionada a las características ambientales en la época de lluvias. Interanualmente, la influencia biótica se presenta en los episodios más someros y más profundos del lago. Las características ambientales influenciaron la distribución de las especies cuando el lago alcanzó el 25% de su volumen. El sitio geográfico, profundidad, temperatura y salinidad fueron los principales factores que influenciaron la distribución de los peces. Estos resultados enfatizan la necesidad de implementar diferentes estrategias de manejo de acuerdo al volumen del lago, particularmente cuando se alcanza un umbral crítico.

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Trophic Partitioning of Sympatric Zooplanktivorous Silverside in a Tropical Shallow Lake: Fish Morphometry and Diet Composition

Cited by 9 publications

References 20 publications

Long term changes in the fish fauna of Lago de Patzcuaro in Central Mexico

Long term changes in the fish fauna of Lago de Patzcuaro in Central Mexico

Trophic interrelations between introduced common carp, Cyprinus carpio (Actinopterygii: Cypriniformes: Cyprinidae), and fish community in a eutrophic shallow lake

Spatial patterns of zooplanktivore Chirostoma species (Atherinopsidae) during water-level fluctuation in the shallow tropical Lake Chapala, Mexico: seasonal and interannual analysis

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