Daytime deliveries observed for the ring-tailed lemurs of the berenty reserve, Madagascar

Autor:	Yukio Takahata, Naomi Miyamoto, Naoki Koyama, Megumi Okamoto
Rok vydání:	2001
Předmět:	Daytime biology Ecology Ring tailed lemurs Lemur Nocturnal Lemur catta biology.organism_classification Predation Animal ecology biology.animal Animal Science and Zoology Circadian rhythm Demography
Zdroj:	Primates. 42:267-271
ISSN:	1610-7365 0032-8332
DOI:	10.1007/bf02629642
Popis:	In the Berenty Reserve, Southern Madagascar, of the 16 deliveries recorded for ring-tailed lemurs from 1995 and 1997, 10 cases occurred during daytime hours (07:00 – 16:59). Four mothers lost contact with their troop members during parturition, but were able to rejoin them after about one hour. No attack from the individuals of the neighboring groups or predators on the mothers or their newborn infants was observed, whereas, other females of the mother’s own troop attacked them after delivery in two cases. Such daytime delivery may have originated from the circadian rhythm of the species’ nocturnal ancestors, who might have given birth during the daytime. This pattern may now be a non-adaptive feature, in agreement with the “evolutionary disequilibrium hypothesis (EVDH).”
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::030a7673ceb80a758607279ffe3f3d9f https://doi.org/10.1007/bf02629642 Zobrazit plný text záznamu Full text from SpringerLink