Emery, 1898 (Formicidae, Hymenoptera): a cryptic globally introduced species.

The discovery in the Netherlands in a shipping container of the ant Emery, 1898, a species similar to the invasive pharaoh ant (Linnaeus, 1758), led to a quest to better define the distribution of this species, which was initially obscure due to uncertain specimen identifications. Here it is shown that , like , is found worldwide, almost certainly as a result of introductions. Including quarantine interceptions, this species is recorded from seven global biogeographic regions, but its established outdoor distribution is currently limited to the tropics and subtropics.

Male long-tailed macaques (Macaca fascicularis) understand the target of facial threat.

The cognitive demands of group living have resulted in the development of social competences in a wide range of animal species. Primates are well aware of the complex social structure within their group and infer information about social status by observing interactions of others. A capacity used to infer this information, Visual Perspective Taking (VPT), is present in apes and in monkeys.

Behavioral changes in response to sound exposure and no spatial avoidance of noisy conditions in captive zebrafish.

Auditory sensitivity in fish serves various important functions, but also makes fish susceptible to noise pollution. Human-generated sounds may affect behavioral patterns of fish, both in natural conditions and in captivity. Fish are often kept for consumption in aquaculture, on display in zoos and hobby aquaria, and for medical sciences in research facilities, but little is known about the impact of ambient sounds in fish tanks.