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One out of three roadkilled animals goes undetected by science

Animals may escape and die away from the road after the collision, rebound off the road or retain by vehicle. In these cases, it is so extremely difficult to be recorded through typical roadkill...

Identifican nuevos linajes de parásitos sanguíneos exclusivos de aves que habitan en entornos urbanos

Los resultados del estudio han revelado que algunos parásitos del género Plasmodium, responsables de la malaria aviar, son más diversos en la ciudad que en el campo, presentando algunos linajes que...

Invasive blue crabs can travel more than 100 km upstream

Scientists from the Doñana Biological Station – CSIC warns of the capacity of the blue crab to invade river stretches located far from river mouths. This migrating capacity of blue crabs...

Easter rains bring relief to Doñana, but more rainfall is needed this spring

145.3 l/m2 have been collected during March, mostly during Easter, according to ICTS-Doñana data. Rains come late for wintering, but will still be useful for waterfowl breeding. The annual...

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Scrapes as a communication tool in the largest Neotropical felids

Scrapes as a communication tool in the largest Neotropical felids

Details of how, why and in what conditions large felids make scrapes is unknown. Here, the general hypothesis about the use of scrapes for marking proposals, as well as to communicate with other individuals to signalize particular points or areas of interest were examined by studying scrape-marking behaviour of jaguars and pumas. Scrapes were surveyed during dry season in five study areas from Mexico (El Edén and San Ignacio), Belize (Cockscomb) and Brazil (Angatuba and Serra das Almas), which differed in presence and/or abundance of jaguars and pumas. A total of 269 felid scrapes were found along 467 km of paths surveyed, obtaining a finding rate of 0.576 scrapes per km. In trails, scrapes were found in a similar frequency in the centre and edge, whereas in car tracks they were mainly found in the edge. Scrapes were located mainly in the centre in areas only with pumas, in the centre and in the edge in areas with a similar number of jaguars and pumas, and in the edge in area mainly dominated by jaguars. Felids chose sites mainly covered by leaves and located in paths less wide, clean and rarely used. Scrapes seem to be signalizing some specific areas within territories and data suggest that they are made with the proposal of communication between individuals. informacion[at] Palomares et al (2018) Scraping marking behaviour of the largest Neotropical felids. PeerJ 6:e498; DOI 10.7717/peerj.4983