Epizootia natural causada por Cordyceps unilateralis (Hypocreales, Euascomycetes) em adultos de Camponutus sp. (Hymenoptera, Formicidae) na região de Manaus, Amazonas, Brasil ()

Abstract

(Hymenoptera, Formicidae) na região de Manaus, Amazonas, Brasil (•)Resumo O presente trabalho registra uma epizootia ocorrida na região amazônica em adultos de Camponotus sp causada por Cordyceps unilateralis (Tuslane) Saccardo. G desenvolvimento do fungo no hospedeiro foi descrito . Os mecanismos envolvidos no contágio, o hiperparasitismo e as tentativas de reinfecção foram avaliadas e discutidas . Sugere-se estudos mais detalhados scbre a fisiologia de desenvolvimento do fungo e sobre SEU posslvel efeito como fator de mortalidade em populações de Atta cephalotes Fabr .

Unravelling the diversity behind the Ophiocordyceps unilateralis (Ophiocordycipitaceae) complex: Three new species of zombie-ant fungi from the Brazilian Amazon

“…Such events are pan-tropical with records from Asia, Australasia, Africa and the Americas (Evans 1974;Andrade 1980;, 1984Evans 1988aEvans , 2001Kepler et al 2011;Luangsa-ard et al 2011;Kobmoo et al 2012).…”

New fungal pathogens of the red ant, Myrmica rubra, from the UK and implications for ant invasions in the USA

“…For example, it was claimed that ants are immune to infection (Wheeler 1910;Bequaert 1922); whilst, Allen & Buren (1974: 125) considered that: ''epizootics, such as those that occur in the Lepidoptera, are rarely observed'' -as evidenced by the general paucity of fungal-infected ants in insect pathology collections. Nevertheless, the hypothesis received support from subsequent studies in South America which reported on the regular occurrence of epizootics caused by fungal pathogens of the family Clavicipitaceae (Hypocreales) in Amazonian forest ecosystems (Andrade 1980;Evans 1982;Evans & Samson 1982, 1984Ellison & Evans 1996). Past and present records of mycopathogens of ants have been reviewed recently with the caveat that: ''This is not intended to be a comprehensive treatment of the subject since there is probably still much hidden literature and, doubtless, more fungal genera and species to be discovered'' (Evans 2003: 138).…”

Cordyceps locustiphila (Hypocreales: Cordycipitaceae) infecting the grasshopper pest Tropidacris collaris (Orthoptera: Acridoidea: Romaleidae)

“…A phylogenetic classification based on molecular data separated the species across three families, Cordycipitaceae, Clavicipitaceae and Ophiocordycipitaceae (Sung et al 2007b, Sanjuan et al 2014. Cordyceps-like fungi have the highest species diversity in subtropical and tropical regions (Samson et al 1988) such as tropical areas of Brazil (Andrade 1980, Evans & Samson 1982, Evans et al 2011, Colombia (Kobayasi 1981, Sanjuan et al 2001, 2014, 2015 Ecuador (Kobayasi 1981, Evans & Samson 1982, and Bolivia (Mains 1959). In Argentina, these fungi had been found infecting different insects (Spegazzini 1919, Marchionatto 1945, Mains 1954, 1959, Yasem de Romero 1984, López Lastra 1989, Mueller & Rajchenberg 1991.…”