dor_id: 4129057

506.#.#.a: Público

590.#.#.d: Cada artículo es evaluado mediante una revisión ciega única. Los revisores son externos nacionales e internacionales.

510.0.#.a: Web of Science (WoS), Directory of Open Access Journals (DOAJ), Sistema Regional de Información en Línea para Revistas Científicas de América Latina, el Caribe, España y Portugal (Latindex), Scientific Electronic Library Online (SciELO), Consejo Nacional de Ciencia y Tecnología (CONACyT), La Red de Revistas Científicas de América Latina y el Caribe, España y Portugal (Redalyc)

561.#.#.u: http://www.ib.unam.mx/

650.#.4.x: Biología y Química

336.#.#.b: article

336.#.#.3: Artículo de Investigación

336.#.#.a: Artículo

351.#.#.6: http://www.revista.ib.unam.mx/index.php/bio/index

351.#.#.b: Revista Mexicana de Biodiversidad

351.#.#.a: Artículos

270.1.#.p: Revistas UNAM. Dirección General de Publicaciones y Fomento Editorial, UNAM en revistas@unam.mx

590.#.#.c: Open Journal Systems (OJS)

270.#.#.d: MX

270.1.#.d: México

590.#.#.b: Concentrador

883.#.#.u: http://www.revistas.unam.mx/front/

883.#.#.a: Revistas UNAM

590.#.#.a: Coordinación de Difusión Cultural, UNAM

883.#.#.1: https://www.publicaciones.unam.mx/

883.#.#.q: Dirección General de Publicaciones y Fomento Editorial, UNAM

850.#.#.a: Universidad Nacional Autónoma de México

856.4.0.u: http://www.revista.ib.unam.mx/index.php/bio/article/view/3533/2222

100.1.#.a: Mar Silva, Valentin; Medina Nava, Martina; Herrerías Diego, Yvonne; Ramírez Herrejón, Juan P.; Domínguez Domínguez, Omar

524.#.#.a: Mar Silva, Valentin, et al. (2021). Trophic biology of the twospot livebearer, Pseudoxiphophorus bimaculatus, an invasive fish in Teuchitlán River, central Mexico. Revista Mexicana de Biodiversidad; Vol. 92, 2021. Recuperado de https://repositorio.unam.mx/contenidos/4129057

245.1.0.a: Trophic biology of the twospot livebearer, Pseudoxiphophorus bimaculatus, an invasive fish in Teuchitlán River, central Mexico

502.#.#.c: Universidad Nacional Autónoma de México

561.1.#.a: Instituto de Biología, UNAM

264.#.0.c: 2021

264.#.1.c: 2021-07-02

653.#.#.a: Biodiversity; exotic ichthyofauna; food habits; human disturbance

506.1.#.a: La titularidad de los derechos patrimoniales de esta obra pertenece a las instituciones editoras. Su uso se rige por una licencia Creative Commons BY-NC-ND 4.0 Internacional, https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode.es, fecha de asignación de la licencia 2021-07-02, para un uso diferente consultar al responsable jurídico del repositorio por medio del correo electrónico falvarez@ib.unam.mx

884.#.#.k: http://www.revista.ib.unam.mx/index.php/bio/article/view/3533

001.#.#.#: rmbio.oai:ojs.pkp.sfu.ca:article/3533

041.#.7.h: eng

520.3.#.a: The Teuchitlán River in Mexico is a hotspot of fish diversity, with 3 endemic species. Pseudoxiphophorus bimaculatus has been introduced into the river, but its trophic impact on the system is unknown. We determined the importance of each food item in the diet of P. bimaculatus with a relative importance index, their feeding behavior using an omnivorous index, the trophic position with the TrophLab program, and the niche breadth using the standardized Levin index. We performed Permanova analyses to compare diet between size classes, sites, and seasons. We analyzed 631 P. bimaculatus individuals. The species consumed mainly terrestrial insects, but presented an herbivorous trend in some sites. A generalist trophic behavior was presented in the wet season and a specialistbehavior in the dry season occupying different trophic levels and presenting variable trophic width. This flexible feeding strategy enables P. bimaculatus to exploit resources from different trophic levels. The high consumption (%RII > 50) of terrestrial insects could indicate that P. bimaculatus may transport allochthonous energy into the river. Furthermore, the high invasive potential of the species represents a risk for the freshwater ecosystems of central Mexico, a region that has been recognized as a hotspot for freshwater fish conservation.

773.1.#.t: Revista Mexicana de Biodiversidad; Vol. 92 (2021)

773.1.#.o: http://www.revista.ib.unam.mx/index.php/bio/index

022.#.#.a: ISSN electrónico: 2007-8706; ISSN impreso: 1870-3453

310.#.#.a: Trimestral

300.#.#.a: Páginas: e923533

264.#.1.b: Instituto de Biología, UNAM

758.#.#.1: http://www.revista.ib.unam.mx/index.php/bio/index

doi: https://doi.org/10.22201/ib.20078706e.2021.92.3533

handle: 008aac5ec895f550

harvesting_date: 2022-08-17 16:00:00.0

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Artículo

Trophic biology of the twospot livebearer, Pseudoxiphophorus bimaculatus, an invasive fish in Teuchitlán River, central Mexico

Mar Silva, Valentin; Medina Nava, Martina; Herrerías Diego, Yvonne; Ramírez Herrejón, Juan P.; Domínguez Domínguez, Omar

Instituto de Biología, UNAM, publicado en Revista Mexicana de Biodiversidad, y cosechado de Revistas UNAM

Licencia de uso

Procedencia del contenido

Cita

Mar Silva, Valentin, et al. (2021). Trophic biology of the twospot livebearer, Pseudoxiphophorus bimaculatus, an invasive fish in Teuchitlán River, central Mexico. Revista Mexicana de Biodiversidad; Vol. 92, 2021. Recuperado de https://repositorio.unam.mx/contenidos/4129057

Descripción del recurso

Autor(es)
Mar Silva, Valentin; Medina Nava, Martina; Herrerías Diego, Yvonne; Ramírez Herrejón, Juan P.; Domínguez Domínguez, Omar
Tipo
Artículo de Investigación
Área del conocimiento
Biología y Química
Título
Trophic biology of the twospot livebearer, Pseudoxiphophorus bimaculatus, an invasive fish in Teuchitlán River, central Mexico
Fecha
2021-07-02
Resumen
The Teuchitlán River in Mexico is a hotspot of fish diversity, with 3 endemic species. Pseudoxiphophorus bimaculatus has been introduced into the river, but its trophic impact on the system is unknown. We determined the importance of each food item in the diet of P. bimaculatus with a relative importance index, their feeding behavior using an omnivorous index, the trophic position with the TrophLab program, and the niche breadth using the standardized Levin index. We performed Permanova analyses to compare diet between size classes, sites, and seasons. We analyzed 631 P. bimaculatus individuals. The species consumed mainly terrestrial insects, but presented an herbivorous trend in some sites. A generalist trophic behavior was presented in the wet season and a specialistbehavior in the dry season occupying different trophic levels and presenting variable trophic width. This flexible feeding strategy enables P. bimaculatus to exploit resources from different trophic levels. The high consumption (%RII > 50) of terrestrial insects could indicate that P. bimaculatus may transport allochthonous energy into the river. Furthermore, the high invasive potential of the species represents a risk for the freshwater ecosystems of central Mexico, a region that has been recognized as a hotspot for freshwater fish conservation.
Tema
Biodiversity; exotic ichthyofauna; food habits; human disturbance
Idioma
eng
ISSN
ISSN electrónico: 2007-8706; ISSN impreso: 1870-3453

Enlaces