Factors affecting captive female giraffe stress response: Male presence, small enclosure, and low temperature

Authors: Miho Saito, Masayuki Matsunaga, Hiroki Fukuizumi, Masayuki Nakamichi, Kodzue Kinoshita

Publication/Journal: Zoo Biology

Keywords: agonistic interaction, conflict management, noninvasive hormone monitoring, social housing condition, social rank

2023

Giraffes like it hot? Research on giraffe drinking behaviour in response to warm water supply in a cold environment

Authors: Kota Okabe, Hiroki Fukuizumi, Ayumi Kawamura, Masayuki Matsunaga, Chihiro Kase, Katsuji Uetake

Publication/Journal: Journal of Zoo and Aquarium Research

Keywords: animal welfare, environmental enrichment, hydration

2022

Daytime mother–calf relationships in reticulated giraffes (Giraffa cameloparadalis reticulate) at the Kyoto City Zoo

Authors: Masayuki Nakamichi, Chisa Murata, Ryo Eto, Naoko Takagi, Kazunori Yamada

Publication/Journal: Zoo Biology

Keywords: captive giraffes, development, mother–calf relationships, proximity, suckling, weaning

2015

Personality Assessment and Its Association With Genetic Factors in Captive Asian and African Elephants

Authors: Saki Yasui, Akitsugu Konno, Masayuki Tanaka, Gen'ichi Idani, Arne Ludwig, Dietmar Lieckfeldt, Miho Inoue-Murayama

Publication/Journal: Zoo Biology

Keywords: behavioral traits, polymorphism, questionnaire

2013

Secretory Pattern of Inhibin During Estrous Cycle and Pregnancy in African (Loxodonta africana) and Asian (Elephas maximus) Elephants

Authors: Yuki Yamamoto, Natsuki Yuto, Tatsuya Yamamoto, Saroch Kaewmanee, Osamu Shiina, Yasushi Mouri, Etsuo Narushima, Masayuki Katayanagi, Keisuke Sugimura, Kentaro Nagaoka, Gen Watanabe, Kazuyoshi Taya

Publication/Journal: Zoo Biology

Keywords: corpus luteum, estrous cycle, female elephant, inhibin, pregnancy

2012

Physical intuitions about support relations in monkeys (Macaca fuscata) and apes (Pan troglodytes)

Authors: Chizuko Murai, Masayuki Tanaka, Masamichi Sakagami

Publication/Journal: Journal of Comparative Psychology

Keywords: intuition, intuitions about support, macaca fuscata, pan troglodytes, physical intuitions, primates, support relations

2011

The influence of kin relationship and reciprocal context on chimpanzees’ other-regarding preferences

Authors: Shinya Yamamoto, Masayuki Tanaka

Publication/Journal: Animal Behaviour

Keywords: altruism, chimpanzee, mother-offspring relationship, nepotism, other-regarding preference, pan troglodytes, prosociality, proximate mechanism, reciprocity

2010

Do Chimpanzees (Pan troglodytes) Spontaneously Take Turns in a Reciprocal Cooperation Task?

Authors: Shinya Yamamoto, Masayuki Tanaka

Publication/Journal: Journal of Comparative Psychology

Keywords: chimpanzee (pan troglodytes), punishment, reciprocal altruism, solicitation, turn-taking

2009

Assessing the Effects of New Primate Exhibits on Zoo Visitors’ Attitudes and Perceptions by Using Three Different Assessment Methods

Authors: Masayuki Nakamichi

Publication/Journal: Anthrozoos: A Multidisciplinary Journal of The Interactions of People & Animals

Keywords: animal preference rank, exhibits, nonhuman primates, viewing time, zoo visitors

2007