Mathieu Mahamoud-Issa

Adam Mickiewicz University in Poznań | UAM · Behavioural ecology

The city-a modern jungle, where not cellulose and photosynthesis but concrete and combustion reign supreme. The question now being asked by urban planners, governments, and scientists is if it may stay like that and if it can stay like that or if it has to stay like that. Social, economic, cultural, historical, and legal factors are determinants in...

The Yellow-breasted Barbet (Trachyphonus margaritatus) is a group-living and chorusing bird species. However, its vocal repertoire remains poorly described. In this study, we measured the acoustic features of four distinct vocalisations as well as the daily calling activity of barbets at 11 roosting cavity sites. We found that bird’s peak of callin...

In this study, we conducted a parasitological investigation of the quill mite fauna of the subfamily Picobiinae (Acariformes: Prostigmata: Syringophilidae) associated with African barbets (Aves: Piciformes: Lybiidae). We examined twenty-seven host species, representing 57% of the forty-seven known host species in the family Lybiidae, belonging to s...

Biological evolution in the cities.

Cooperative behaviour is a prominent feature among many group-living species and continues to pose challenges to our understanding about the evolution of social relationships and task coordination between members of the same social group. Individuals who are willing to cooperate to achieve a joined action need to communicate their intentions and so...

Many studies have revealed that animal vocalizations, including those from mammals, are individually distinctive. Therefore, acoustic identification of individuals (AIID) has been repeatedly suggested as a non-invasive and labor efficient alternative to mark-recapture identification methods. We present a pipeline of steps for successful AIID in a g...

The Yellow-Breasted Barbet (Trachyphonus margaritatus) uses specific calls to introduce duets and choruses. • Do leaders give more calls than followers do to initiate duets and choruses? • Do mainly the leader individuals rather than followers use wheet and soft calls?

When animal species have a strong phylogeographic structure questions arise on the origin, maintenance and future evolutionary trajectory of that structure. One prediction is that phenotypic differences among populations serve as pre-mating barriers should secondary contact occur. Post-mating barriers may also function and ensure further separation...

For animals that produce sounds, acoustic recordings are an efficient way to sample populations and communities. Using individual signature encoded within the territorial vocalizations, bioacousticians can differentiate individuals based on their vocalizations. The number of males singing in the area of interest could then be accessible from an aco...

Birdsong has been extensively studied in the context of sexual selection, and intersexual vocal com- munication prior to pair formation has been the focus of most interest. With the exception of conspicuous vocal duets of tropical bird species , descrip tions of intra-pair vocal communication are missing for most other bird species. This communicat...