Spontaneous Yawning and its Potential Functions in South American Sea ...
Nov 21, 2019 · We defined a yawn as when a sea lion opened its mouth, while simultaneously inhaling deeply, until its mouth opened to its maximum. At this time, its vibrissae were erect, its lips retracted, and its teeth were partially exposed.
Spontaneous yawning is a widespread behaviour in vertebrates. However, data on marine mammals are scarce. In this study, we tested some hypotheses on the functions of yawning in a captive group...
Spontaneous Yawning and its Potential Functions in South American Sea ...
Nov 21, 2019 · Spontaneous yawning is a widespread behaviour in vertebrates. However, data on marine mammals are scarce. In this study, we tested some hypotheses on the functions of yawning in a captive group of South American sea lions (Otaria flavescens).
The causes and consequences of yawning in animal groups
May 1, 2022 · Yawning also commonly occurs under similar contexts in sea lions (Otaria flavescens) (Palagi, Guillén-Salazar, et al., 2019) and has been linked with sleep or recumbency periods in African elephants, Loxodonta africana (Rossman et al., 2017).
Spontaneous yawning and its potential functions in South American sea ...
Spontaneous yawning is a widespread behaviour in vertebrates. However, data on marine mammals are scarce. In this study, we tested some hypotheses on the functions of yawning in a captive group of South American sea lions (Otaria favescens). According to the Dimorphism Hypothesis, species showing low levels of sexual dimorphism in canine size do not show sex diferences in yawning distribution ...
Yawning is a ubiquitous behaviour present in all classes of vertebrates 1. It is a stereotyped behaviour that once triggered, is uncontainable and unstoppable 2. In air-breathing animal species...
(PDF) Spontaneous Yawning and Its Potential Functions in
Nov 21, 2019 · Spontaneous Yawning and Its Potential Functions in South American Sea Lions (Otaria Flavescens) by Elisabetta Palagi, Federico Guillén-Salazar, Clara
Yawning sequence. At the top, the long inspiration phase and at …
Spontaneous yawning is a widespread behaviour in vertebrates. However, data on marine mammals are scarce. In this study, we tested some hypotheses on the functions of yawning in a captive group...
Sea lions yawn due to anxiety - Phys.org
Jan 17, 2020 · However, a recent study has shown that these animals do not only yawn because they are tired: the yawns of sea lions increase in frequency immediately after situations of social conflict...
In the recently published study, CEU UCH researchers Clara Llamazares and Federico Guillén have been able to point to anxiety as one of the causes of yawning in a heretofore unstudied species,...