Giraffe males have longer suckling bouts than females

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00027014%3A_____%2F20%3AN0000064" target="_blank" >RIV/00027014:_____/20:N0000064 - isvavai.cz</a>

Alternative codes found

RIV/60460709:41340/20:83823 RIV/61988987:17310/20:A21025IS

Result on the web

<a href="https://vuzv.cz/_privat/20062.pdf" target="_blank" >https://vuzv.cz/_privat/20062.pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1093/jmammal/gyz201" target="_blank" >10.1093/jmammal/gyz201</a>

Result language

angličtina

Original language name

Giraffe males have longer suckling bouts than females

Original language description

In polygynous mammals, females are expected to bias maternal investment in favor of male calves. The mother should invest more in males to enhance their reproductive success in adulthood, or the males require greater investment as they are bigger and stronger than females. In this study, we used nursing duration to compare the difference in the amount of maternal investment provided by females. We compared differences according to sex of the offspring and the influence of calves' identification by sniffing, using captive giraffes (Giraffa camelopardalis) as a model. Since a high intensity of allonursing (nursing of a nonfilial calf) was reported in giraffes, we also focused on the difference between filial and nonfilial calves. We observed 22 nursing females and 47 suckling calves in four zoological gardens in the Czech Republic from 2007 to 2011. Nursing duration was longer for male calves than for female calves and for calves sniffed by the nursing female regardless whether the calves were filial or nonfilial. We conclude that male calves are more demanding for the amount of investment received and they are more successful in this effort than female calves. Since females provided investment in the same way to filial and nonfilial calves, selection for higher demand for investment by male than by female offspring should be important for their future development. Our results also demonstrate the importance of sniffing for the identification of the suckling calf by the female.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10613 - Zoology

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2020

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of Mammalogy

ISSN

0022-2372

e-ISSN

—

Volume of the periodical

101

Issue of the periodical within the volume

2

Country of publishing house

US - UNITED STATES

Number of pages

6

Pages from-to

558-563

UT code for WoS article

000537550900022

EID of the result in the Scopus database

2-s2.0-85088165511