Home range structure and inter-group competition for land of Japanese macaques in evergreen and deciduous forests

Maruhashi, Tamaki; Saito, Chiemi; Agetsuma, Naoki

doi:10.1007/bf02573078

Cited by 97 publications

(35 citation statements)

References 8 publications

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“…Trees were sparse due to heavy grazing by sympatric sika deer (Cervus nippon) (Maruhashi et al, 1998;Takatsuki, 2009), and each food tree could easily be defined as a discrete food patch (Nakagawa, 1990). For arboreal and ground patches, a tree crown and the ground beneath the crown cover of a tree, respectively, were assumed to be a food patch.…”

Section: Food-patch Definitionmentioning

confidence: 99%

The relationships between feeding-group size and feeding rate vary from positive to negative with characteristics of food items in wild Japanese macaques (Macaca fuscata)

Kazahari

Tsuji

Agetsuma

2013

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To understand the costs and benefits of group-living, it is important to clarify the impacts of other individuals on foraging success.Previous studies on group-living primates have focused on the relationship between feeding-group size and feeding rate in food patches, and have exhibited inconsistent results, showing positive, neutral, or negative relationships. The relationship realized will depend on the balance of positive and negative impacts of co-feeding on feeding rate. The intensity of negative impacts (i.e., feeding competition) may vary with some characteristics of food items such as (1) patch size, (2) within-patch food density, (3) within-patch distribution pattern of food, (4) the abundance and (5) distribution pattern of within-habitat food trees, and (6) the relative energy content among available food items. Thus, the balance of positive and negative impacts of co-feeding, and ultimately the relationship between feeding-group size and feeding rate, is expected to change with characteristics of food items. In this study of wild Japanese macaques (Macaca fuscata), the relationship between feeding-group size and feeding rate, and the above six characteristics of 12 main food items were assessed over six seasons. Positive, neutral, or negative relationships between feeding-group size and feeding rate were detected among these food items.Positive relationships were consistently associated with within-patch food density; higher food density within food patches was likely to lead to positive relationships. Thus, various relationships between feeding-group size and feeding rate should be attributed to these specific characteristics of food items, which alter the degree of feeding competition.

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Section: Food-patch Definitionmentioning

confidence: 99%

The relationships between feeding-group size and feeding rate vary from positive to negative with characteristics of food items in wild Japanese macaques (Macaca fuscata)

Kazahari

Tsuji

Agetsuma

2013

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“…Temperature ranges from a minimum of about 3°C to a maximum of about 32°C, rainfall is between 100 and 400 mm each month but it is higher than 400 6 mm in June, which is the peak of the rainy season (Hill, 1997). No natural predators are present on the island (Maruhashi et al 1998). food categories (i.e.…”

Section: Study Area and Subjectsmentioning

confidence: 99%

Seasonal Effects on Reconciliation in Macaca fuscata yakui

Majolo

Koyama²

2006

Int J Primatol

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Diet composition may have profound effects on the activity budgets, level of food competition, and social behaviour of a species. Similarly, in seasonally breeding species, the mating season represents a period where the competition for mating partners increases, thus affecting amicable social interactions among group members.The aims of this study were thus to analyse the importance of the mating season and of seasonal variations in diet composition and food competition on reconciliation in wild female Japanese macaques (Macaca fuscata yakui) living on Yakushima Island, Japan.Yakushima macaques are appropriate for this topic as they are seasonal breeders and their diet composition significantly changes among the seasons. Although large differences were found between the summer months and the winter and early spring months in activity budgets and the consumption of the main food sources (i.e. fruits, seeds and leaves), the level of food competition and conciliatory tendency remained unaffected. Conversely, conciliatory tendency was significantly lower during the mating season than in the non-mating season. Moreover, conciliatory tendency was lower when one or both female opponents were in oestrous than when they were not. These results indicate that the mating season have profound effects on reconciliation whereas this is not true for seasonal changes in activity budgets and diet composition. The detrimental effects of the mating season on female social relationships and reconciliation may be due to the importance of female competition for access to male partners in multi-male, multi-female societies.

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“…This value was much longer than those of New World monkeys (3.3-6.8 hr, Chapman & Russo [2007]) and prosimians (2.3-7.5 hr, Edwards & Ullrey [1999]), and comparable to those of great apes [Lambert, 1997], though in future we should reconsider how other items consumed at same time influence the seed passage times. The home range area of Japanese macaques can reach several square kilometers [Takasaki, 1981;Tsuji, 2010], within which they range with circuitous movement [Nakagawa, 1989;Maruhashi et al, 1998]. Therefore, detecting a proportional relationship between the passage time and travel distance of the macaques [Otani, 2005] would be difficult.…”

Section: Discussionmentioning

confidence: 99%

“…The daily routes of macaques on Kinkazan Island are circuitous [Maruhashi et al, 1998;Nakagawa, 1989], and we predicted only a weak correlation between travel time and dispersal distance. We established 12 distance categories of 100 m in length (0-100 m to 1,101-1,200 m) depicting the proportions of macaque movements.…”

Section: Ranging Of the Macaquesmentioning

confidence: 98%

Endozoochorous seed dispersal by Japanese macaques (Macaca fuscata): Effects of temporal variation in ranging and seed characteristics on seed shadows

Tsuji

Morimoto

2015

American J Primatol

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Variation in seed shadows generated by frugivores is caused by daily, seasonal, and inter-annual variation in ranging, as well as inter-specific variability in gut passage times according to seed characteristics. We studied the extent to which seed weight, specific gravity, and daily (morning, afternoon, and evening) and inter-annual (2004 vs. 2005) variation in ranging affected seed shadows generated by wild Japanese macaques (Macaca fuscata) in northern Japan. The macaques ingested fleshy fruits of 11 species during the two year study period; Viburnum dilatatum (Caprifoliaceae: heavier seeds with higher specific gravity) and Rosa multiflora (Rosaceae: lighter seeds with lower specific gravity) were eaten frequently in both years. The travel distances of macaques after feeding on V. dilatatum and R. multiflora fruits were estimated by combining feeding locations and ranging patterns measured in the field with gut passage times of model seeds in captive animals. Median travel distances after fruit feeding were 431 (quantile range: 277-654) and 478 m (265-646), respectively, with a maximum of 1,261 m. Neither year nor time of day affected travel distances. The gut passage time of model V. dilatatum seeds was longer than that of model R. multiflora seed, but this did not affect dispersal distances. Seed shadows for both species over 2 years showed unimodal distribution (peak: 101-500 m) and more than 90%, 20%, and 3% of ingested seeds were estimated to be dispersed >100, >500, and >1000 m, respectively, the longest known distances among macaque species. R. multiflora seeds tended to be dispersed further in 2004 than 2005, but V. dilatatum seeds were not, implying that inter-annual variations in ranging pattern due to the distribution and abundance of nut fruiting could affect dispersal distance.

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Home range structure and inter-group competition for land of Japanese macaques in evergreen and deciduous forests

Cited by 97 publications

References 8 publications

The relationships between feeding-group size and feeding rate vary from positive to negative with characteristics of food items in wild Japanese macaques (Macaca fuscata)

The relationships between feeding-group size and feeding rate vary from positive to negative with characteristics of food items in wild Japanese macaques (Macaca fuscata)

Seasonal Effects on Reconciliation in Macaca fuscata yakui

Endozoochorous seed dispersal by Japanese macaques (Macaca fuscata): Effects of temporal variation in ranging and seed characteristics on seed shadows

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