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Dear MARMAM colleagues,

My co-authors and I would like to share the our recent article (in early
view) in Marine Mammal Science:

*Actis P.S., Danilewicz D., Cremer M. & Bortolotto G.A. 2018. Breathing
synchrony in franciscana (**Pontoporia blainvillei**) and Guiana
dolphins (**Sotalia
guianensis**) in Southern Brazil.** Marine Mammal Science**. DOI:

Abstract: Synchronous breathing may be a useful proxy for studying other,
and perhaps more complex, aspects of cetacean behavior. Here we describe a
study conducted in Babitonga Bay, southern Brazil, where we investigated
the synchrony of breathing in two small populations of franciscana (*Pontoporia
blainvillei*) and Guiana dolphins (*Sotalia guianensis*). The bay is
affected by different sources of anthropogenic disturbances, such as boat
activity and point-source pollution. We assumed breathing synchrony to be
the inverse of the time between breathing surfacing displays of dolphins
within a swimming pair, which we refer to as lag. The relationship between
lag and anthropogenic and animal-related variables was evaluated with
generalized additive models. For franciscana dolphins, breathing synchrony
was only positively related to the proximity between animals. Breathing
synchrony in Guiana dolphins was positively related to both the proximity
between animals and to group size, and varied significantly depending on
the research boat used. Proximal characteristics (i.e., of individuals or
of the group) of these dolphin species seem to be more related to the
synchronization in breathing than are the environmental variables assessed
here. Results presented expand the current knowledge of these two dolphin
species and provide general insights into the breathing synchrony for

The early view article can be accessed here: https://onlinelibrary.wi
Alternatively, PDF requests may be made by emailing actispam...@gmail.com

All the best,
Pamela S. Actis
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*Pamela Soledad Actis *
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