Sleep-related behaviors in zoo-housed giraffes (Giraffa camelopardalis reticulata): Basic characteristics and effects of season and parturition

Authors: N. Takagi, M. Saito, H. Ito, M. Tanaka, Y. Yamanashi

Publication/Journal: Zoo Biology

Keywords: behavior, giraffe, paradoxical sleep, parturition, season, sleep

2019

Stimuli from feed for sham dustbathing in caged laying hens

Authors: Yuko Moroki, Toshio Tanaka

Publication/Journal: Applied Animal Behaviour Science

Keywords: feed stimuli, laying hens, sham dustbathing, welfare

2016

A new voluntary blood collection method for the Andean bear (Tremarctos ornatus) and Asiatic black bear (Ursus thibetanus)

Authors: Yusuke Otaki, Nobuhide Kido, Tomoko Omiya, Kaori Ono, Miya Ueda, Akinori Azumano, Sohei Tanaka

Publication/Journal: Zoo Biology

Keywords: blood collection, facility, operant conditioning training, positive reinforcement, venipuncture, zoo

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

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

Relationship between gonadal steroid hormones and vulvar bleeding in southern tamandua, Tamandua tetradactyla

Authors: Satoshi Kusuda, Tomoko Endoh, Hiroyuki Tanaka, Itsuki Adachi, Osamu Doi, Junpei Kimura

Publication/Journal: Zoo Biology

Keywords: anteater, estradiol, estrous cycle, pregnancy, progesterone

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

Comparison of behavior, physical condition and performance of laying hens in four molting methods

Authors: Tsuyoshi Shimmura, Yusuke Eguchi, Katsuji Uetake, Toshio Tanaka

Publication/Journal: Animal Science Journal

Keywords: behavior, behaviour, induced molting, laying hens, non-feed withdrawal, welfare

2008