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

2015 ◽  
Vol 78 (2) ◽  
pp. 185-191 ◽  
Author(s):  
Yamato Tsuji ◽  
Mayumi Morimoto
Keyword(s):  
Seed Dispersal ◽  
Temporal Variation ◽  
Macaca Fuscata ◽  
Japanese Macaques ◽  
Seed Shadows ◽  
Seed Characteristics

scholarly journals Interspecific Difference in Seed Dispersal Characteristics between Japanese Macaques (Macaca fuscata) and Sympatric Japanese Martens (Martes melampus)

2020 ◽  
Vol 91 (6) ◽  
pp. 711-720
Author(s):  
Yamato Tsuji ◽  
Risma Yanti ◽  
Atsushi Takizawa ◽  
Toshio Hagiwara
Keyword(s):  
Species Richness ◽  
Seed Dispersal ◽  
Macaca Fuscata ◽  
Mammalian Species ◽  
Japanese Macaques ◽  
Interspecific Difference ◽  
Herbaceous Plant ◽  
Plant Seeds ◽  
Faecal Samples ◽  
Martes Melampus

We compared the characteristics of seeds within faeces between semi-terrestrial Japanese macaques (<i>Macaca fuscata</i>) and sympatric arboreal Japanese martens (<i>Martes melampus</i>) in Shiga Heights, central Japan. We collected faecal samples of the two mammalian species for 1 year (<i>n</i> = 229 for macaques and <i>n</i> = 22 for martens). We then compared the proportion of seed occurrence, life-form composition, number of seeds and species richness within single faecal samples, and the seed intact ratio between the two mammalian species. We detected seeds from 20 and 7 species from macaque and marten faeces, respectively. Macaque faeces contained seeds of multiple strata, while marten faeces contained no herbaceous plant seeds. Seed sizes within faeces showed no interspecific difference. For macaques, seeds were found within faecal samples collected in late spring to late fall, while for martens, seeds were found between summer and winter. The proportion of seed occurrence was greater in summer (both species) and fall (macaques), which implied that the seed dispersal roles of macaques and martens was greater in these seasons. The mean seed number (across species), intact ratio of seeds (high for both species) and seed species richness within single faecal samples of macaques and martens showed no significant differences, but for several species, martens defecated more seeds than macaques and showed higher intact ratio. Our study indicates that sympatric mammals in the temperate regions of Japan contribute differently to seed dispersal in forest ecosystems.

TOLERATED CO-FEEDING IN RELATION TO DEGREE OF KINSHIP IN JAPANESE MACAQUES

Behaviour ◽  
2001 ◽  
Vol 138 (4) ◽  
pp. 487-509 ◽  
Author(s):  
Bernard Chapais ◽  
Patrick Belisle
Keyword(s):  
Macaca Fuscata ◽  
Japanese Macaques ◽  
Preferential Treatment ◽  
Feeding Rates ◽  
Dominance Relationship ◽  
Mothers And Daughters ◽  
Dominant Female ◽  
Different Types ◽  
Access To Food

AbstractWe analyzed co-feeding in relation to degree of kinship in Japanese macaques Macaca fuscata), testing experimentally five categories of matrilineal kin dyads: mother-daughter, grandmother-granddaughter, sisters, aunt-niece and nonkin. In each test, two adult females with a clear dominance relationship had access to a box containing a limited quantity of highly prized food. The dominant female could easily prevent the subordinate from eating so that food was easily monopolizable, hence the use of the expression tolerated co-feeding. Rates of tolerated co-feeding increased steeply with degree of kinship. The aggression levels of dominant females towards subordinate females decreased with increasing degree of kinship and this effect was most apparent between mothers and daughters. The confidence level of subordinate females increased with degree of kinship and this effect became apparent above the aunt-niece kin class. Prior access to food by the subordinate female was a significant means of access to food, mostly beyond the grandmother-granddaughter kin category. The results point to a relatedness threshold for the preferential treatment of kin at r = 0.25 (grandmother-granddaughter and sister dyads), beyond which (r = 0.125: aunt-niece dyads), levels of tolerated co-feeding were comparable to those of nonkin females. The identity of this threshold with that found in previous studies on the same group for two different types of interactions suggests the existence of a generalized relatedness threshold for kin favoritism in Japanese macaques. Assuming that the costs of food defense by the dominant females were negligible and that tolerated co-feeding was altruistic, our results support the role of kin selection in the evolution of altruism in primates beyond the mother-offspring bond.

Estimating activity of Japanese macaques (Macaca fuscata) using accelerometers

2017 ◽  
Vol 79 (10) ◽  
pp. e22694 ◽  
Author(s):  
John C. M. Sha ◽  
Akihisa Kaneko ◽  
Naoko Suda-Hashimoto ◽  
Tianmeng He ◽  
Makiko Take ◽  
...  
Keyword(s):  
Macaca Fuscata ◽  
Japanese Macaques

scholarly journals Japanese Macaques (Macaca fuscata) as Natural Reservoir ofBartonella quintana

2012 ◽  
Vol 21 (12) ◽  
Author(s):  
Shingo Sato ◽  
Hidenori Kabeya ◽  
Aika Yoshino ◽  
Wataru Sekine ◽  
Kazuo Suzuki ◽  
...  
Keyword(s):  
Macaca Fuscata ◽  
Japanese Macaques ◽  
Natural Reservoir
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