Distribution and key foraging habitat of the Large-footed Myotis Myotis macropus in the highly modified Port Jackson estuary, Sydney, Australia: an overlooked, but vulnerable bat
2017; Royal Zoological Society of New South Wales; Volume: 38; Issue: 4 Linguagem: Inglês
10.7882/az.2017.012
ISSN2204-2105
Autores Tópico(s)Animal Vocal Communication and Behavior
ResumoABSTRACT The Large-footed Myotis Myotis macropus is a threatened echolocating bat that uses a specialised ‘trawling' foraging strategy to hunt for aquatic prey. While the species is well known in freshwater habitats, in 2014 it was recorded for the first time roosting and foraging in a sheltered bay on Sydney Harbour in the Port Jackson estuary. To investigate how widely distributed M. macropus was within the estuary (Parramatta River, Lane Cove River, Middle Harbour, harbour islands, west Harbour and east Harbour), 56 sampling sites were surveyed acoustically. Of these sites, 24 were in harbour bays/coves, 20 were in tributary bays, seven were along tributary channels/creeks, four were on the margins of harbour islands and a single site was located on a freshwater lake. We also investigated relationships between M. macropus activity and environmental variables to identify those that should be targeted for management. Radio-tracking of M. macropus at one known roost was carried out to assess roost fidelit...
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