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Saddle‐back tamarin (Saguinus fuscicollis) reproductive strategies: Evidence from a thirteen‐year study of a marked population
We monitored a population of four to seven groups of individually marked saddle‐back tamarins (Saguinus fuscicollis; Callitrichidae) at the Cocha Cashu Biological Station in Peru's Manu National ParkExpand
Facultative polyandry and the role of infant-carrying in wild saddle-back tamarins (Saguinus fuscicollis)
  • A. Goldizen
  • Biology
  • Behavioral Ecology and Sociobiology
  • 2004
The data from this study population tentatively support the hypothesis that adults should mate monogramously only if they have nonreproductive helpers to help rear infants, and the proposed benefits of polyandry to males and females differ quantitatively, but in both cases benefits stem from the help that males provide in rearing young. Expand
Fission–fusion dynamics in wild giraffes may be driven by kinship, spatial overlap and individual social preferences
Investigation of association patterns of wild giraffes in Etosha National Park, Namibia found that female-female pairs, but not male-male pairs, showed both preferred and avoided relationships, andCorrelations between matrices of pairwise associations, spatial overlap and relatedness showed thatfemale-female associations were strongly correlated with amounts of spatial overlap. Expand
Dynamic Horizontal Cultural Transmission of Humpback Whale Song at the Ocean Basin Scale
A striking pattern of horizontal transmission is presented: multiple song types spread rapidly and repeatedly in a unidirectional manner, like cultural ripples, eastward through the populations in the western and central South Pacific over an 11-year period. Expand
How useful is expert opinion for predicting the distribution of a species within and beyond the region of expertise? A case study using brush-tailed rock-wallabies Petrogale penicillata
1. Species' distribution modelling relies on adequate data sets to build reliable statistical models with high predictive ability. However, the money spent collecting empirical data might be betterExpand
Boldness, trappability and sampling bias in wild lizards
It is suggested that studies that trap animals for laboratory assessments of personality may consistently underrepresent the extent of personality trait variation in the populations that they sample, and recommend that future studies either develop methods for testing personality in the field that control for obvious confounding variables or make every effort to ensure minimum bias when sampling animals for use in a laboratory setting. Expand
It is suggested that tamarin births at Cocha Cashu are timed such that lactation and weaning occur when food is abundant, because during the period of low food availability, there would be insufficient food to meet the demands of lactationand to serve as easily obtainable weaning foods. Expand
Songs of male humpback whales, Megaptera novaeangliae, are involved in intersexual interactions
It is suggested that males joining singers are prospecting for females rather than engaging in male social ordering and that singing may incur the cost of attracting competing males. Expand
Evidence that disease-induced population decline changes genetic structure and alters dispersal patterns in the Tasmanian devil
The results show that disease can result in genetic and demographic changes in host populations over few generations and short time scales and that dispersal is male-biased in devils and that disperseal distances follow a typical leptokurtic distribution. Expand
Agamas exhibit behavioral syndromes: bolder males bask and feed more but may suffer higher predation
It is suggested that males of this species show a significant behavioral syndrome that may lead to fitness trade-offs, and individual agama behavior was significantly consistent through time. Expand