Shaking the myth: Body mass, aggression, steroid hormones, and
social dominance in wild house mouse

J 2015

Shaking the myth: Body mass, aggression, steroid hormones, and social dominance in wild house mouse

HIADLOVSKA, Z., O. MIKULA, Miloš MACHOLÁN, P. HAMPLOVA, B. Voslajerova BIMOVA et. al.

Basic information

Original name

Shaking the myth: Body mass, aggression, steroid hormones, and social dominance in wild house mouse

Authors

HIADLOVSKA, Z. (203 Czech Republic), O. MIKULA (203 Czech Republic), Miloš MACHOLÁN (203 Czech Republic, belonging to the institution), P. HAMPLOVA (203 Czech Republic), B. Voslajerova BIMOVA (203 Czech Republic) and K. DANISZOVA (203 Czech Republic)

Edition

GENERAL AND COMPARATIVE ENDOCRINOLOGY, 2015, 0016-6480

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10600 1.6 Biological sciences

Country of publisher

United States of America

Confidentiality degree

není předmětem státního či obchodního tajemství

Impact factor

Impact factor: 2.667

RIV identification code

RIV/00216224:14310/15:00094015

Organization unit

Faculty of Science

DOI

http://dx.doi.org/10.1016/j.ygcen.2015.09.033

UT WoS

000366438300003

Keywords in English

Aggression; Corticosterone; Dominance; House mouse; Ontogeny; Testosterone

Abstract

V originále

In social mammals, the position of a male in the group's hierarchy strongly affects his reproductive success. Since a high social rank is often gained through competition with other males, selection should favour bigger males over smaller ones. We may therefore predict faster growth and/or delayed sexual maturity in dominant males. Likewise, dominants should have higher levels of testosterone, hormone important in many aspects of male dominance. Less obvious is the relationship between dominance and levels of corticosterone but generally higher concentrations are expected in subordinate individuals. We studied body growth, sexual maturation and endocrinal changes in males of two house mouse subspecies, raised in fraternal pairs. Since Mus musculus domesticus is the subspecies which dominates mutual encounters with Mus musculus musculus we predicted higher growth rate, delayed puberty and aggression, and higher testosterone and corticosterone levels in domesticus males compared to musculus. In all comparisons, no differences were found between dominant and subordinate musculus brothers. On the other hand, in M. m. domesticus, dominant males revealed a different growth trajectory and lower corticosterone levels than subordinate males but not delayed puberty and higher testosterone concentrations, thus contradicting our predictions. In inter-subspecific comparisons, musculus males matured earlier but became aggressive at the same time as domesticus males. The musculus testosterone ontogeny suggests that social positions in this subspecies remain unfixed for an extended period and that the increasing levels probably reflect prolonged hierarchy contests. It appears that the ontogeny of behaviour and physiological traits diverge cryptically between the two subspecies. (C) 2015 Elsevier Inc. All rights reserved. Keywords

Citovat

HIADLOVSKA, Z., O. MIKULA, Miloš MACHOLÁN, P. HAMPLOVA, B. Voslajerova BIMOVA and K. DANISZOVA. Shaking the myth: Body mass, aggression, steroid hormones, and social dominance in wild house mouse. GENERAL AND COMPARATIVE ENDOCRINOLOGY. 2015, vol. 223, November, p. 16-26. ISSN 0016-6480. Available from: https://dx.doi.org/10.1016/j.ygcen.2015.09.033.

@article{1376702,
   author = {Hiadlovska, Z. and Mikula, O. and Macholán, Miloš and Hamplova, P. and Bimova, B. Voslajerova and Daniszova, K.},
   article_number = {November},
   doi = {http://dx.doi.org/10.1016/j.ygcen.2015.09.033},
   keywords = {Aggression; Corticosterone; Dominance; House mouse; Ontogeny; Testosterone},
   language = {eng},
   issn = {0016-6480},
   journal = {GENERAL AND COMPARATIVE ENDOCRINOLOGY},
   title = {Shaking the myth: Body mass, aggression, steroid hormones, and social dominance in wild house mouse},
   volume = {223},
   year = {2015}
}

TY  - JOUR
ID  - 1376702
AU  - Hiadlovska, Z. - Mikula, O. - Macholán, Miloš - Hamplova, P. - Bimova, B. Voslajerova - Daniszova, K.
PY  - 2015
TI  - Shaking the myth: Body mass, aggression, steroid hormones, and social dominance in wild house mouse
JF  - GENERAL AND COMPARATIVE ENDOCRINOLOGY
VL  - 223
IS  - November
SP  - 16-26
EP  - 16-26
SN  - 00166480
KW  - Aggression
KW  - Corticosterone
KW  - Dominance
KW  - House mouse
KW  - Ontogeny
KW  - Testosterone
N2  - In social mammals, the position of a male in the group's hierarchy strongly affects his reproductive success. Since a high social rank is often gained through competition with other males, selection should favour bigger males over smaller ones. We may therefore predict faster growth and/or delayed sexual maturity in dominant males. Likewise, dominants should have higher levels of testosterone, hormone important in many aspects of male dominance. Less obvious is the relationship between dominance and levels of corticosterone but generally higher concentrations are expected in subordinate individuals. We studied body growth, sexual maturation and endocrinal changes in males of two house mouse subspecies, raised in fraternal pairs. Since Mus musculus domesticus is the subspecies which dominates mutual encounters with Mus musculus musculus we predicted higher growth rate, delayed puberty and aggression, and higher testosterone and corticosterone levels in domesticus males compared to musculus. In all comparisons, no differences were found between dominant and subordinate musculus brothers. On the other hand, in M. m. domesticus, dominant males revealed a different growth trajectory and lower corticosterone levels than subordinate males but not delayed puberty and higher testosterone concentrations, thus contradicting our predictions. In inter-subspecific comparisons, musculus males matured earlier but became aggressive at the same time as domesticus males. The musculus testosterone ontogeny suggests that social positions in this subspecies remain unfixed for an extended period and that the increasing levels probably reflect prolonged hierarchy contests. It appears that the ontogeny of behaviour and physiological traits diverge cryptically between the two subspecies. (C) 2015 Elsevier Inc. All rights reserved. Keywords
ER  -

HIADLOVSKA, Z., O. MIKULA, Miloš MACHOLÁN, P. HAMPLOVA, B. Voslajerova BIMOVA and K. DANISZOVA. Shaking the myth: Body mass, aggression, steroid hormones, and social dominance in wild house mouse. \textit{GENERAL AND COMPARATIVE ENDOCRINOLOGY}. 2015, vol.~223, November, p.~16-26. ISSN~0016-6480. Available from: https://dx.doi.org/10.1016/j.ygcen.2015.09.033.

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