scholarly journals Aestivation dynamics of bogong moths (Agrotis infusa) in the Australian Alps and predation by wild pigs (Sus scrofa)

2018 ◽  
Vol 24 (2) ◽  
pp. 178 ◽  
Author(s):  
Peter Caley ◽  
Marijke Welvaert

We document predation of aestivating bogong moths (Agrotis infusa) by wild pigs (Sus scrofa) at a location in the Australian Alps. This is the first known record of pigs preying on bogong moths. Wild pigs are recent colonisers of the region, though already the population appears seasonally habituated to foraging on aestivating moths. This is indicative of adaptation of a feral animal undertaking dietary resource switching within what is now a modified ecosystem and food web. The significance of this predation on moth abundance is unclear. Long-term monitoring to compare numbers of moths with historical surveys undertaken before the colonisation by wild pigs will require that they are excluded from aestivation sites. Our surveys in 2014–15 observed bogong moths to arrive about one month earlier compared with a similar survey in 1951–52, though to also depart earlier.

2005 ◽  
Vol 36 (1) ◽  
pp. 27-42 ◽  
Author(s):  
Sophie Rossi ◽  
Marc Artois ◽  
Dominique Pontier ◽  
Catherine Cruci�re ◽  
Jean Hars ◽  
...  

2013 ◽  
Vol 9 (5) ◽  
pp. 20130419 ◽  
Author(s):  
Marlène Gamelon ◽  
Mathieu Douhard ◽  
Eric Baubet ◽  
Olivier Gimenez ◽  
Serge Brandt ◽  
...  

To maximize long-term average reproductive success, individuals can diversify the phenotypes of offspring produced within a reproductive event by displaying the ‘coin-flipping’ tactic. Wild boar (Sus scrofa scrofa) females have been reported to adopt this tactic. However, whether the magnitude of developmental plasticity within a litter depends on stochasticity in food resources has not been yet investigated. From long-term monitoring, we found that juvenile females produced similar-sized fetuses within a litter independent of food availability. By contrast, adult females adjusted their relative allocation to littermates to the amount of food resources, by providing a similar allocation to all littermates in years of poor food resources but producing highly diversified offspring phenotypes within a litter in years of abundant food resources. By minimizing sibling rivalry, such a plastic reproductive tactic allows adult wild boar females to maximize the number of littermates for a given breeding event.


2014 ◽  
Vol 174 (1-2) ◽  
pp. 148-154 ◽  
Author(s):  
Francisco J. Cano-Manuel ◽  
Jorge López-Olvera ◽  
Paulino Fandos ◽  
Ramón C. Soriguer ◽  
Jesús M. Pérez ◽  
...  

Author(s):  
Barbara S. Minsker ◽  
Charles Davis ◽  
David Dougherty ◽  
Gus Williams

Kerntechnik ◽  
2018 ◽  
Vol 83 (6) ◽  
pp. 513-522 ◽  
Author(s):  
U. Hampel ◽  
A. Kratzsch ◽  
R. Rachamin ◽  
M. Wagner ◽  
S. Schmidt ◽  
...  

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