Of the three subspecies of Critically Endangered Bornean orangutans, Pongo pygmaeus has smallest population size. One its most important habitats is tropical forest within and around Danau Sentarum National Park (DSNP). Research in late 1990s estimated that ca. 1025 orangutans inhabited DSNP, while 1717 beyond DSNP's boundaries. However, concerns were later raised incorrectly nest decay rates (...

Following the publication of this article, the editors were alerted to concerns over the accuracy and clarity of information reported regarding the source of the samples included in the study. The editors were contacted by representatives of the Borneo Orangutan Society who indicated that the samples included in this study were collected by the society for surveillance purposes as per the requi...

Agrilozodes bellamyi sp. nov. from the Caatinga Biome (type locality: Juazeirinho, Paraíba, Brazil) is described and illustrated. It differs from the other five known species mainly by the moderate longitudinal elevation between the eyes, posterolateral angles of pronotum acute and oblique, mesoepisternum excavated, elytral color pattern and elevation of interestriae 2 and 4. The distribution o...

The courtship behaviour of pygmy newts, Triturus pygmaeus, consists of three phases: orientation, static display (often not clearly differentiated from each other) and spermatophore transfer. The repertoire of male sexual behaviour consists of nine different movements. Exhibition, an alert posture in which the male advances with small jumps around the female, is the most frequent behaviour. The...

The rare findings of specimens in larval or post-larval stages (6 phyllosomas and 7 nistos/early juveniles) belonging to the family Scyllaridae are reported for the waters around Sicily. Some were stranded on different winter occasions near the Strait of Messina (north–eastern Sicily), while others were collected during experimental trawl surveys carried out in the Sicilian Channel, at depths u...

Ecological studies of orangutans have almost exclusively focused on populations living in primary or selectively logged rainforest. The response of orangutans to severe habitat degradation remains therefore poorly understood. Most experts assume that viable populations cannot survive outside undisturbed or slightly disturbed forests. This is a concern because nearly 75% of all orangutans live o...

Geographic variation in some aspects of chimpanzee behavior has been interpreted as evidence for culture. Here we document similar geographic variation in orangutan behaviors. Moreover, as expected under a cultural interpretation, we find a correlation between geographic distance and cultural difference, a correlation between the abundance of opportunities for social learning and the size of th...

....................................................................................................... 4 Introduction ................................................................................................... 5 Studying Primates ........................................................................................... 7 Pongo: Species Profile ............................................