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Context dependent life-history shift in Macrodinychus sellnicki mites attacking a native ant host in Colombia

Pérez Lachaud, Gabriela | Klompen, Hans [autor/a] | Poteaux, Chantal [autor/a] | Santamaría, Carlos [autor/a] | Armbrecht, Inge [autor/a] | Beugnon, Guy [autor/a] | Lachaud, Jean Paul [autor/a].
Tipo de material: Artículo en línea Artículo en línea Tema(s): Nylanderia fulva | Ectatomma | Hormigas | Parasitismo | Macrodinychus sellnicki | Ácaros | HuéspedesTema(s) en inglés: Nylanderia fulva | Ectatomma | Ants | Parasitism | Macrodinychus sellnicki | Mites | HostsDescriptor(es) geográficos: Valle del Cauca (Colombia) Nota de acceso: Acceso en línea sin restricciones En: Scientific Reports. volumen 9, número 8394 (June 2019), páginas 431-434. --ISSN: 2045-2322Número de sistema: 41490Resumen:
Inglés

Ant parasitoidism has been reported in seven of the 26 recognized species of the mite genus Macrodinychus (Machrodynichidae). Macrodynichus sellnicki, previously reported as a parasitoid of the invasive ant Nylanderia fulva in Colombia, is now reported, in the same region, as attacking a native host, Ectatomma sp. 2 (E. ruidum complex). The mite develops within the protective silk cocoon of an Ectatomma pupa and waits for the emergence of the young ant before leaving the cocoon, unmolested. Overall nest prevalence was relatively high (34.6% of the 52 nests containing cocoons) but pupae prevalence was low (4.0%, n=1401 cocoons). Mite life-history (parasite or parasitoid) was context dependent, shifting according to the intensity of the attack on a same host. Contrary to the strictly parasitoidic association of M. sellnicki with N. fulva, single mite attacks against E. ruidum did not result in host killing and solitary M. sellnicki (78.6% of the cases) behaved as parasites. However, in 21.4% of the attacks (0.9% of all available host pupae) more than one mite was involved and behaved as parasitoids, draining the host of its internal fuids and killing it. This is the frst association of a macrodinychid mite with a species of the subfamily Ectatomminae, and the frst ant associated mite for which such a context dependent life-style shift is described.

Recurso en línea: https://www.nature.com/articles/s41598-019-44791-2
Lista(s) en las que aparece este ítem: Gabriela Pérez Lachaud
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Acceso en línea sin restricciones

Ant parasitoidism has been reported in seven of the 26 recognized species of the mite genus Macrodinychus (Machrodynichidae). Macrodynichus sellnicki, previously reported as a parasitoid of the invasive ant Nylanderia fulva in Colombia, is now reported, in the same region, as attacking a native host, Ectatomma sp. 2 (E. ruidum complex). The mite develops within the protective silk cocoon of an Ectatomma pupa and waits for the emergence of the young ant before leaving the cocoon, unmolested. Overall nest prevalence was relatively high (34.6% of the 52 nests containing cocoons) but pupae prevalence was low (4.0%, n=1401 cocoons). Mite life-history (parasite or parasitoid) was context dependent, shifting according to the intensity of the attack on a same host. Contrary to the strictly parasitoidic association of M. sellnicki with N. fulva, single mite attacks against E. ruidum did not result in host killing and solitary M. sellnicki (78.6% of the cases) behaved as parasites. However, in 21.4% of the attacks (0.9% of all available host pupae) more than one mite was involved and behaved as parasitoids, draining the host of its internal fuids and killing it. This is the frst association of a macrodinychid mite with a species of the subfamily Ectatomminae, and the frst ant associated mite for which such a context dependent life-style shift is described. eng

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