Differences in Mother-Infant Bond and Social Behavior of African Elephant Calves Living In Situ and Ex Situ.

African zoo elephants live in safe environments with sufficient resources, are protected from threats, and have their health and body conditions cared for. Calves ex situ undergo the same developmental stages as in situ and are raised by the whole family unit. However, due to environmental differences, there might be behavioral modifications between calves in situ and ex situ.

Monitoring Behaviour in African Elephants during Introduction into a New Group: Differences between Related and Unrelated Animals.

The introduction of elephants into new groups is necessary for breeding programmes. However, behavioural studies on the reactions of these animals at first encounters are missing. In the present study, female African elephants living in zoos were observed during unifications with unfamiliar elephants (introduction of two to one females and one to two females; = 6) and reunifications with related elephants (two mother-daughter-pairs; = 4) that were separated for 2 and 12 years, respectively.

Defense in the aeolidoidean genus Phyllodesmium (Gastropoda).

The genus Phyllodesmium (Aeolidoidea, Gastropoda) comprises shell-less marine snails, whose defense strategies are not well investigated yet. Here we report results of the first chemical investigation of P. briareum, as well as a re-investigation of P.