Naobi Okayasu
Dados Biográficos
| ID | 4146250 |
|---|---|
| NOME | Naobi Okayasu |
| PRENOMES | Naobi |
| SOBRENOME | Okayasu |
| ASSINATURA | OKAYASU N |
| AFILIAÇÕES | Kyoto University |
| VERIFICADO | Não |
| TOTAL DE OBRAS | 7 |
| TOTAL DE CITAÇÕES | 26 |
| TOTAL COMO AUTOR | 7 |
| TOTAL COMO EDITOR | 0 |
| PRIMEIRO ANO DE PUBLICAÇÃO | 1990 |
| ANO MAIS RECENTE DE PUBLICAÇÃO | 2003 |
| ÍNDICE H | 2 |
A case report of a novel type of stick use by wild chimpanzees
Contrast of Estrus in Accordance with Social Contexts Between Two Troops of Wild Japanese Macaques on Yakushima
I observed estrus in two adjacent troops (A-troop and M-troop) of wild Yakushima macaques during the 1984 mating season. A-troop females showed short and regularly cycling estrus periods, seldom came into estrus simultaneously, and scarcely failed to mate when they were in estrus. In contrast, females of M-troop, which went through troop takeovers during the mating season, demonstrated mate competition and subsequent estrus prolongation. Early in…
Does troop size of wild Japanese macaques influence birth rate and infant mortality in the absence of predators?
Reproduction of wild Japanese macaque females of Yakushima and Kinkazan Islands
Population Dynamics of Wild Bonobos (Pan paniscus) at Wamba
Troop extinction and fusion in wild Japanese macaques of Yakushima Island, Japan
A wild Japanese macaque troop decreased in size because the birth rate dropped and infant mortality increased. In the 1989 mating season, the last male left the troop, and the remaining two females joined a neighboring troop. Thus, the troop ceased to exist as an independent troop. A lower limit to troop size may exist, below which a troop cannot effectively defend its range, forcing the females to join a larger troop. © 1994 Wiley‐Liss, Inc
Vocal Communication and Its Sociological Interpretation of Wild Pygmy Chimpanzees in Wamba, Zaire
This study describes how the vocal repertoire of wild pygmy chimpanzees reflects their social relationships. The data were collected from the El and E2 groups at Wamba, in central Zaire.The pygmy chimpanzee vocal repertoire in Wamba was divided into six categories based on the vocal sounds and social contexts. Note that this repertoire lacks vocalizations emitted during dyadic interactions. Directed vocalizations were emitted by a single individu…
Population Dynamics of Wild Bonobos (Pan paniscus) at Wamba
Contrast of Estrus in Accordance with Social Contexts Between Two Troops of Wild Japanese Macaques on Yakushima
I observed estrus in two adjacent troops (A-troop and M-troop) of wild Yakushima macaques during the 1984 mating season. A-troop females showed short and regularly cycling estrus periods, seldom came into estrus simultaneously, and scarcely failed to mate when they were in estrus. In contrast, females of M-troop, which went through troop takeovers during the mating season, demonstrated mate competition and subsequent estrus prolongation. Early in…
Vocal Communication and Its Sociological Interpretation of Wild Pygmy Chimpanzees in Wamba, Zaire
This study describes how the vocal repertoire of wild pygmy chimpanzees reflects their social relationships. The data were collected from the El and E2 groups at Wamba, in central Zaire.The pygmy chimpanzee vocal repertoire in Wamba was divided into six categories based on the vocal sounds and social contexts. Note that this repertoire lacks vocalizations emitted during dyadic interactions. Directed vocalizations were emitted by a single individu…
Troop extinction and fusion in wild Japanese macaques of Yakushima Island, Japan
A wild Japanese macaque troop decreased in size because the birth rate dropped and infant mortality increased. In the 1989 mating season, the last male left the troop, and the remaining two females joined a neighboring troop. Thus, the troop ceased to exist as an independent troop. A lower limit to troop size may exist, below which a troop cannot effectively defend its range, forcing the females to join a larger troop. © 1994 Wiley‐Liss, Inc
Does troop size of wild Japanese macaques influence birth rate and infant mortality in the absence of predators?
Reproduction of wild Japanese macaque females of Yakushima and Kinkazan Islands
Population Dynamics of Wild Bonobos (Pan paniscus) at Wamba
Contrast of Estrus in Accordance with Social Contexts Between Two Troops of Wild Japanese Macaques on Yakushima
I observed estrus in two adjacent troops (A-troop and M-troop) of wild Yakushima macaques during the 1984 mating season. A-troop females showed short and regularly cycling estrus periods, seldom came into estrus simultaneously, and scarcely failed to mate when they were in estrus. In contrast, females of M-troop, which went through troop takeovers during the mating season, demonstrated mate competition and subsequent estrus prolongation. Early in…
A case report of a novel type of stick use by wild chimpanzees
Primate Behavior and Ecology (7 obras) · Animal Vocal Communication and Behavior (6 obras) · Biology (6 obras) · Zoology (6 obras) · Animal Behavior and Reproduction (5 obras) · Demography (5 obras) · Animal ecology (4 obras) · Ecology (4 obras) · Geography (3 obras) · Population (3 obras)