Mexican mojarra can dominate non-native convict cichlids even when outnumbered

Molina, Diana P.; Arce, Elsah; Mercado‐Silva, Norman

doi:10.1007/s00265-020-02963-5

Cited by 8 publications

(11 citation statements)

References 90 publications

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“…In this study, however, the native Mexican mojarra performed more aggressive behaviors than nonnative species and was consistently more dominant than the four nonnative cichlid species. The Mexican mojarra had previously demonstrated higher dominance than the nonnative when outnumbered (Molina et al, 2021). Similarly, a cichlid native to Lake Kariba in Africa, Oreochromis mortimeri (Trewavas, 1966) was dominant over a nonnative cichlid, Oreochromis niloticus (Chifamba & Mauru, 2017;Linnaeus, 1758).…”

Section: Discussionmentioning

confidence: 98%

“…The Mexican mojarra is the least abundant cichlid in the Amacuzac River while the most abundant cichlid is the convict cichlid fish (Archundia et al, 2018). However, Mexican mojarra can dominate nonnative convict cichlids even when outnumbered (Molina et al, 2021). Thus, it seems unlikely that the nonnative cichlids' demographic success is due to dominance, but rather may be attributable to shorter life cycles and higher reproductive rates than native species (Witte et al, 1992).…”

Section: Discussionmentioning

confidence: 99%

“…The behavior of the fish was recorded for 80 min with a Full HD digital video camera (4 K Panasonic DMC-GH4). The camera was mounted on a professional tripod, 200 cm away from the front of the tank (Molina et al, 2021). The video recordings obtained were analyzed to quantify aggressive and submissive behaviors (Table 1).…”

Section: Experimental Protocolmentioning

confidence: 99%

“…In one-on-one contests, and even when outnumbered, Mexican mojarra have demonstrated dominance over the nonnative convict cichlid (Archundia & Arce, 2019;Molina et al, 2021). However, the presence of tilapia, spotcheek cichlid, and green terror could alter this hierarchy, potentially making the Mexican mojarra subordinate when all four nonnative cichlids are present.…”

Section: Introductionmentioning

confidence: 99%

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Aggressive interactions and consistency of dominance hierarchies of the native and nonnative cichlid fishes of the Balsas basin

Archundia

Arce

2021

Aggressive Behavior

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Dominance hierarchies are generally established based on the levels of aggressiveness that animals present. Frequently, animals fight to establish a dominance hierarchy and obtain a disputed resource. The Mexican mojarra Cichlasoma istlanum is a native species of the Balsas river basin and coexists there with four nonnative cichlids: tilapia Oreochromis sp., convict cichlid Amatitlania nigrofasciata, spotcheek cichlid Thorichthys maculipinnis, and green terror Andinoacara rivulatus. These five cichlid species compete for spaces for reproduction, feeding, and shelter and frequently engage in aggressive interactions to obtain these resources. We quantified dominance indices to evaluate the hierarchical structure of dominance among these five cichlids and the duration of aggressive behaviors of the Mexican mojarra during experimental contests between the native species and each of the four nonnative species. The Mexican mojarra was consistently dominant over the other four cichlid

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Section: Discussionmentioning

confidence: 98%

Section: Discussionmentioning

confidence: 99%

Section: Experimental Protocolmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Aggressive interactions and consistency of dominance hierarchies of the native and nonnative cichlid fishes of the Balsas basin

Archundia

Arce

2021

Aggressive Behavior

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“…En nuestros resultados, aunque A. nigrofasciata presentó abundancias elevadas con relación a otras especies, esta no fue mayor a la observada para el cíclido nativo. Adicionalmente, en combates experimentales se ha demostrado que A. istlanus es dominante frente a A. nigrofasciata, lo cual podría sugerir que la competencia por interferencia no explica el número de individuos observados en el Río (Archundia & Arce, 2019;Franco & Arce, 2022;Molina et al, 2021). Otros estudios han reportado que estas especies no presentan competencia por alimento al ser la nativa carnívora y la no nativa entomófago-omnívora.…”

Section: Discussionunclassified

Diversidad específica y taxonómica de la ictiofauna del Río Amacuzac, Morelos, México

Cordero-Martínez¹,

Mercado‐Silva²,

Jesús³

et al. 2022

Rev. Biol. Trop.

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Introducción: La diversidad de una comunidad biológica es el resultado de procesos ecológicos e históricos, los cuales, analizados en conjunto, producen una mejor comprensión de las causas que la generan. Objetivo: Actualizamos y analizamos la diversidad específica y taxonómica de la ictiofauna del río Amacuzac, México. Métodos: Durante cinco temporadas de muestreo (2019-2020), recolectamos peces de diez sitios en el río y aplicamos un análisis de conglomerados a las variables del hábitat. Resultados: Recolectamos 7 638 individuos, siete de especies nativas y nueve no nativas, incluyendo Copadichromis borleyi, un nuevo registro para el Amacuzac. La riqueza por sitio osciló entre ocho y 13 especies. Las variables del hábitat definieron cuatro grupos. Las especies más abundantes fueron: Poeciliopsis gracilis, Poecilia maylandi y Amatitlania nigrofasciata. Las especies menos abundantes fueron: Pterygoplichtys pardalis, Ilyodon whitei, Copadichromis borleyi e Ictalurus punctatus. Las especies más relevantes fueron: A. nigrofasciata, Amphilophus istlanus, Andinoacara rivulatus, Notropis boucardi, Oreochormis sp., P. maylandi, P. gracilis y Thorichthys maculipinis. Las especies más restringidas fueron: Atherinella balsana, C. borleyi e I. punctatus. Conclusiones: Las especies en peligro de extinción, A. istlanus y N. boucardi, aun prevalecen en el río. Además, se muestra un aumento en el número de especies no nativas. Analizar la diversidad desde dos perspectivas, aporta una visión más completa de los cambios que se dan en el Río Amacuzac como consecuencia del establecimiento de especies, información que es importante para futuras estrategias de conservación.

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Lead pollution impacts the dynamics and resolution of contests between the native Mexican mojarra and invasive convict cichlid

Inchaurregui,

Olivares-Rubio,

Arce

et al. 2024

Behav Ecol Sociobiol

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Mexican mojarra can dominate non-native convict cichlids even when outnumbered

Cited by 8 publications

References 90 publications

Aggressive interactions and consistency of dominance hierarchies of the native and nonnative cichlid fishes of the Balsas basin

Aggressive interactions and consistency of dominance hierarchies of the native and nonnative cichlid fishes of the Balsas basin

Diversidad específica y taxonómica de la ictiofauna del Río Amacuzac, Morelos, México

Lead pollution impacts the dynamics and resolution of contests between the native Mexican mojarra and invasive convict cichlid

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