Leopard Predation Thread

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I found one study about gorillas, in it is also part about leopard predation:

https://pdfs.semanticscholar.org/8b15/89dcb59b230c2b1726424a065ecab6e7ca3d.pdf

Name of study:

Interunit, environmental and interspecific influences on silverback-group dynamics in western lowland gorillas (Gorilla gorilla gorilla) 

Michelle Klailova 

A thesis submitted for the degree of Doctor of Philosophy Department of Psychology 

University of Stirling February 2011

Quote: 
"Evidence from previous studies suggests that forest leopards may adapt their hunting behaviour to follow individual preferences for particular prey species [Jenny & Zuberbuhler, 2005; Zuberbuhler & Jenny, 2002].

Although the actual level of risk faced by western lowland gorillas as a result of leopard predation is uncertain, evidence is mounting to suggest that they along with other apes are targeted as leopard prey. In the early 1960s, Schaller [1963] confirmed the deaths of 2-3 adult male mountain gorillas due to leopard attack. During a five year period in Taï National Park, Côte d’Ivoire, Boesch [1991] documented nine separate leopard attacks on chimpanzees. Leopard predation was also strongly suspected in the death of a silverback at Mbeli Bai, Republic of Congo, and of a blackback at the Lossi study site, Democratic Republic of Congo [Robbins et al., 2004]. Fay et al., [1995] and Watson [1999] witnessed leopard attacks on adult gorillas at both gorilla habituation study sites (Bai Hokou/Mongambe) in the Dzanga-Sangha Protected Areas Complex, Central African Republic. Furthermore in 1999the Bai Hokou study group’s main silverback was severely injured in an attack which led to his eventual demise. Although the attacking species could not be verified, attempted leopard predation was suspected due to suspicious claw-like markings on the focal adult male’s back [Cipolletta, 2003; Cipolletta pers. comm.]. Additional records at Bai Hokou show that leopards were detected near gorilla groups on three occasions and that their presence affected group ranging patterns [Goldsmith, 1999; Klailova pers. obsv.]. Finally, although scavenging cannot be ruled out, gorilla and chimpanzee remains in leopard faeces have been recorded at various rainforest sites [Fay et al., 1995; Hart et al., 1996; Henschel et al., 2005, 2008; Ososky, 1998; Tutin & Benirschke, 1991].

The slow life histories of gorillas coupled with a growing inventory of suspected and verified predation incidents, suggest that the leopard could be an important cause of mortality in some ape populations [Robbins et al., 2004]. However, due to the cryptic nature of the forest leopard and challenges of western lowland gorilla habituation, it has not been possible to systematically assess leopard predation risks to gorilla groups."


So there is mentioned 5-6 dead adult male gorillas, one blackback and rest silverbacks. Reply