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 Pablo; Domínguez‐Domínguez, Omar

doi:10.22201/ib.20078706e.2021.92.3533

Cited by 2 publications

(3 citation statements)

References 61 publications

(85 reference statements)

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Section: Biology Of the Twospot Livebearermentioning

confidence: 99%

“…The twospot livebearer can change its diet according to alterations in habitat structure, water quality and biotic integrity (Mar‐Silva et al ., 2021). It is recognized as an omnivore and in some regions as a carnivorous‐insectivore (Carbajal‐Becerra et al ., 2020; Guzmán Santiago & Olvera Soto, 1996; Mar‐Silva et al ., 2021; Mata Salcedo, 2007; Ramírez Santillán, 2022; Trujillo‐Jiménez & Toledo Beto, 2007). There are no differences in the diets of both sexes in terms of seasonality and individual size, but it has been reported that females consume more plant‐based food than males (Trujillo‐Jiménez, 1998).…”

Section: Biology Of the Twospot Livebearermentioning

confidence: 99%

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The invasive twospot livebearer's biology, and its current and potential global distribution

Gomez‐Maldonado,

Calleros,

Salazar‐Rueda

et al. 2023

Journal of Fish Biology

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Poeciliids are widely recognized as successful invaders, possessing traits associated with invasion success. Native to Central America and south‐eastern Mexico, the twospot livebearer (Pseudoxiphophorus bimaculatus) is a species recently recognized as invasive in both Central and northern Mexico. Despite its invasive status, limited research exists on its invasion process and the potential threats it poses to native species. In this study, we conducted a comprehensive review of the current knowledge on the twospot livebearer and mapped its current and potential distribution worldwide. The twospot livebearer shares similar traits with other successful invaders within the same family. Notably, it exhibits high fecundity throughout the year and demonstrates resilience to highly polluted and oxygen‐deprived water conditions. This fish serves as a host for several parasites, including generalists, and has been extensively translocated for commercial purposes. Recently, it has also been used for biocontrol within its native range. Apart from existing outside its native range, the twospot livebearer, under current climate conditions and if transported there, could readily colonize biodiversity hotspots in tropical zones worldwide, including the Caribbean Islands, the Horn of Africa, North of Madagascar Island, south‐eastern Brazil, and others located in southern and eastern Asia. Given that this fish is highly plastic and our Species Distribution Model, we consider that all areas with a habitat suitability >0.2 should prevent its arrival and establishment. Our findings underscore the urgent need to recognize this species as a threat to freshwater native topminnows and prevent its introduction and spread.

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Section: Biology Of the Twospot Livebearermentioning

confidence: 99%

Section: Biology Of the Twospot Livebearermentioning

confidence: 99%

The invasive twospot livebearer's biology, and its current and potential global distribution

Gomez‐Maldonado,

Calleros,

Salazar‐Rueda

et al. 2023

Journal of Fish Biology

View full text Add to dashboard Cite

show abstract

“…The twospot livebearer (Pseudoxiphophorus bimaculatus) is an omnivorous poecilid native to southern Mexico, Nicaragua, Guatemala, Belize and Honduras (Lyons, 2019) that can reach a standard length (SL) of 66 mm (Mar-Silva et al, 2021). The twospot livebearer was recently recognised as an invasive fish species present on the Mexican Central Plateau (MCP) (Gomez-Maldonado et al, 2023).…”

Section: Introductionmentioning

confidence: 99%

Heterospecific sociability and foraging behaviour of an invasive livebearer fish

Salazar‐Rueda,

Gomez‐Maldonado,

Camacho‐Cervantes

2024

Ecology of Freshwater Fish

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Heterospecific sociability could enhance invasion success in social species since social non‐natives usually belong to small founding populations during the early stages of invasion. The twospot livebearer (Pseudoxiphophorus bimaculatus) is native to Central America and southern Mexico and is recently recognised as invasive in the Mexican Central Plateau, where it poses a threat to native species. Here, we evaluated twospot livebearer sociability towards either a conspecific pair or a shoal of four fish with one of four possible compositions, all conspecifics or two conspecifics combined with either two guppies, two porthole livebearers or two twoline skiffias. In a second experiment, foraging time, latency to feed, first fish to begin foraging and aggressive interactions were recorded under the same social conditions used in the sociability experiment, with body size included as a covariate in both experiments. All focal twospot livebearers spent significantly more time with the given shoals rather than with the available space in the aquarium. They showed a higher tendency to associate with small shoals of conspecifics than with pairs. Larger twospot livebearers associated more, regardless of the social condition. Twospot livebearer fed more with porthole livebearers, less with guppies and similarly with twoline skiffias. Latency to forage did not vary significantly between social conditions. Twospot livebearers were involved in more aggressive interactions when with guppies or porthole livebearers than when with native twoline skiffias or conspecifics. Twospot livebearers could gain benefits from associating with natives and conspecifics, but not with other invasive poeciliids. Heterospecific shoaling behaviour with natives may enhance invasion success during early stages when conspecifics are scarce while associating with other invasive poeciliids could lead to increased competition. Further research is needed on heterospecific interactions of non‐natives to better understand their behavioural role in invasion likelihood.

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

Abstract: Trophic biology of the twospot livebearer, Pseudoxiphophorus bimaculatus, an invasive fish in Teuchitlán River, central Mexico Biología trófica del guatapote manchado, Pseudoxiphophorus bimaculatus, un pez invasor en el río Teuchitlán, centro de México

Cited by 2 publications

References 61 publications

The invasive twospot livebearer's biology, and its current and potential global distribution

The invasive twospot livebearer's biology, and its current and potential global distribution

Heterospecific sociability and foraging behaviour of an invasive livebearer fish

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