Roaring Behavior of Two Syntopic Howler Species (Alouatta caraya and A. guariba clamitans): Evidence Supports the Mate Defense Hypothesis

Ranging Patterns of Two Syntopic Howler Monkey Species (Alouatta guariba and A. caraya) in Northeastern Argentina

(2010) Ilaria Agostini et al.   INTERNATIONAL JOURNAL OF PRIMATOLOGY

Singing behavior and singing functions of black-crested gibbons (Nomascus concolor jingdongensis) at Mt. Wuliang, central Yunnan, China

(2009) Peng-Fei Fan et al.   AMERICAN JOURNAL OF PRIMATOLOGY

Are howler monkey species ecologically equivalent? Trophic niche overlap in syntopicAlouatta guariba clamitansandAlouatta caraya

(2009) Ilaria Agostini et al.   AMERICAN JOURNAL OF PRIMATOLOGY

Sexual behavior across ovarian cycles in wild black howler monkeys (Alouatta pigra): male mate guarding and female mate choice

(2008) Sarie Van Belle et al.   AMERICAN JOURNAL OF PRIMATOLOGY

Survey of Alouatta caraya, the black-and-gold howler monkey, and Alouatta guariba clamitans, the brown howler monkey, in a contact zone, State of Rio Grande do Sul, Brazil: evidence for hybridization

(2008) Júlio César Bicca-Marques et al.   PRIMATES

Infant hybrids in a newly formed mixed-species group of howler monkeys (Alouatta guariba clamitans and Alouatta caraya) in northeastern Argentina

(2008) Ilaria Agostini et al.   PRIMATES