Drone methods provide on-demand, high-resolution techniques for population monitoring, habitat mapping, individual photogrammetry, and more.

Compiling studies about Carnivora diet and evaluating trophic guild formation through network analysis, diet dissimilarity and overlapping, we investigated spatial variation in diet parameters and whether there are diet patterns. Further, we assessed the role of phylogeny in trophic guild structuring. The observed network patterns evidenced the central items in carnivorans' diet. Network analyses showed the existence of five modules that can relate to trophic guilds, and we detected that phylogeny was an important driver of dietary patterns.

South Shetland Antarctic fur seal threat assessment. Schematic summary of potential threats to, and recommended actions for, the conservation of South Shetland Antarctic fur seals. The most urgent recommendations are indicated in bold text.

Techniques for estimating presence and abundance of African lions (Panthera leo).

Classification systems are useful tools for aggregating diseases to study them in more detail. However, the current systems are mainly designed for use in health care and fail to capture many details of zoonotic diseases. The goal of this study was to develop a framework for the classification of zoonotic diseases which can generate data useful to their study, as well as to assist policy-makers and wildlife managers. Using the six wild deer species of the Britain and Ireland as an applied example, we demonstrate the use of this framework by carrying out a scoping review of the literature to examine the worldwide occurrence and prevalence of zoonoses in these species. Altogether, we found 120 zoonotic pathogens occurring in these deer species which were then classified based on our framework. The most prevalent pathogen types were bacterial, followed by virus, protozoa and parasites.

There is some evidence that mammalian males CAN impact the ratio of sons to daughters born (viz offspring sex ratio). The 1:1 ratio is thought to be an evolutionarily stable strategy, but there are exceptions. However, there are still no clear answers to basic questions on why this phenomenon happens and through which mechanisms it could be regulated. Mothers can directly impact the developing embryos in mammals. Fathers deliver only sperm, but despite this, they possess mechanisms that act from the males' meiosis up to the early stages of offspring development in the maternal environment.