Decline of Freshwater Fishes and Fisheries in Selected Drainages of West-Central Mexico

Lyons, John D.; González-Hernández, Georgina; Soto‐Galera, Eduardo; Guzmán-Arroyo, Manuel

doi:10.1577/1548-8446(1998)023<0010:doffaf>2.0.co;2

Cited by 73 publications

(66 citation statements)

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“…Their fish fauna contains a relatively high number of imperiled species, and species that are of significant commercial and cultural importance (Lyons et al, 1998;MoncayoEstrada et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Stable isotope evidence for trophic overlap of sympatric Mexican Lake Chapala silversides (Teleostei: Atherinopsidae: Chirostoma spp.)

Mercado‐Silva

Lyons²,

Moncayo‐Estrada

et al. 2015

Neotrop. ichthyol.

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We explore the trophic role that a diverse sympatric group of fishes in the genus Chirostoma play in a large, shallow lake in central Mexico, Lake Chapala. We use δ13C and δ15N stable isotope - based food web analyses to explore how they relate to other components of the Lake Chapala ecosystem. We find five Chirostoma species in top trophic levels of the Chapala food web compared to other fishes, relying on a combination of zooplankton, fish and benthic resources as energy sources. Food web metric analyses showed generally overlapping trophic niches for members of Chirostoma, especially in terms of δ13C. However, C. jordani had lower mean δ15N isotopic values than C. promelas. As a group, "pescados blancos" (C. sphyraena and C. promelas) also had higher δ15N signatures than "charales" (C. consocium, C. jordani and C. labarcae) reflecting greater piscivory, but these differences were not strong for all food web metrics used. Trophic overlap among species of Chirostoma in Lake Chapala raises questions about the forces that might have led to a morphologically diverse but functionally similar and monophyletic group of species.

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Section: Introductionmentioning

confidence: 99%

Stable isotope evidence for trophic overlap of sympatric Mexican Lake Chapala silversides (Teleostei: Atherinopsidae: Chirostoma spp.)

Mercado‐Silva

Lyons²,

Moncayo‐Estrada

et al. 2015

Neotrop. ichthyol.

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“…Mexican freshwater ecosystems have been deteriorating since pre-Hispanic times, however this process has accelerated at the beginning of the 20th century, and worsened in the last 30 years (Lyons et al, 1998;Soto-Galera et al, 1999). The main causes of freshwater ecosystem degradation are deforestation, excessive sedimentation, the introduction of exotic species and discharge of urban and industrial waste water (Peters et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

“…The main causes of freshwater ecosystem degradation are deforestation, excessive sedimentation, the introduction of exotic species and discharge of urban and industrial waste water (Peters et al, 2005). These activities have altered the biotic community structure and function, decreased food web length, and favoured reduction of organism's maximum size and species diversity (Karr, 1981;Lyons et al, 1998). Other changes experienced by fish communities include the increase of exotic species, local extinction or near-extinction of several native species, and the collapse of many fisheries (Aloo, 2003).…”

Section: Introductionmentioning

confidence: 99%

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

Ramírez-Herrejón¹,

Zambrano²,

Mercado‐Silva³

et al. 2014

lajar

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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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“…Furthermore, it is under considerable pressure from a range of anthropogenic activities, including water extraction for consumption, habitat degradation by pollution, reductions in surface water levels and the introduction of exotic species mainly (Soto-Galera & Paulo, 1995;Lyons et al, 1998;Contreras-Balderas, 2005;De la Vega-Salazar & Macías-García, 2005;Contreras MacBeath & Rivas, 2007).…”

Section: Discussionmentioning

confidence: 99%

Occurrence of the fish Girardinichthys viviparus (Cyprinodontiformes: Goodeidae) in an urban lake at Mexico City

Márquez

Mendoza

Santiago

2013

URJ

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A population of the Chapultepec splitfin Girardinichthys viviparus was found in the urban Lake Alameda Oriente. Biometry data for females and males are presented for first time for this population. The main causes of risk reported for this species in the aquatic system are water depletion and habitat alteration by treated wastewater used to keep the water level in the lake. KEY WORDSFreshwater, urban lake, threatened species, fish. RESUMENUna población del mexclapique Girardinichthys viviparus fue observada en el lago urbano Alameda Oriente. Se incluye información sobre la biometría de hembras y machos por primera vez para este lago urbano de la ciudad de México. Las principales causas de riesgo reportadas para esta especie en este cuerpo de agua son la disminución del volumen de agua y la alteración de hábitat por el uso de aguas de desechos tratadas con el fin de mantener el nivel de agua del lago. PALABRAS CLAVEAgua dulce, lago urbano, especie amenazada, peces.

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Decline of Freshwater Fishes and Fisheries in Selected Drainages of West-Central Mexico

Cited by 73 publications

References 0 publications

Stable isotope evidence for trophic overlap of sympatric Mexican Lake Chapala silversides (Teleostei: Atherinopsidae: Chirostoma spp.)

Stable isotope evidence for trophic overlap of sympatric Mexican Lake Chapala silversides (Teleostei: Atherinopsidae: Chirostoma spp.)

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

Occurrence of the fish Girardinichthys viviparus (Cyprinodontiformes: Goodeidae) in an urban lake at Mexico City

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