One or two pups-optimal reproduction strategies of common
noctule females

J 2022

One or two pups-optimal reproduction strategies of common noctule females

ZUKALOVA, Katerina; Veronika SEIDLOVA; Vladimir PIACEK; Monika NEMCOVA; Michal PRIBYL et. al.

Basic information

Original name

One or two pups-optimal reproduction strategies of common noctule females

Authors

ZUKALOVA, Katerina (guarantor); Veronika SEIDLOVA; Vladimir PIACEK; Monika NEMCOVA; Michal PRIBYL; Jiri PIKULA and Jan ZUKAL (203 Czech Republic, belonging to the institution)

Edition

BMC Zoology, London, BioMed Central, 2022, 2056-3132

Other information

Language

English

Type of outcome

Article in a journal

Field of Study

10613 Zoology

Country of publisher

United Kingdom of Great Britain and Northern Ireland

Confidentiality degree

is not subject to a state or trade secret

References:

URL

Impact factor

Impact factor: 1.600

RIV identification code

RIV/00216224:14310/22:00127748

Organization unit

Faculty of Science

DOI

http://dx.doi.org/10.1186/s40850-022-00119-8

UT WoS

000777394700001

EID Scopus

2-s2.0-85127534592

Keywords in English

Gestation; Progesterone; Body weight; Embryo resorption; Chiroptera

Abstract

In the original language

Background The success of animal reproduction is impacted by a trade-off between energetic costs and mortality associated with immediate vs. future reproductive attempts. The reproductive strategies of European insectivorous bats differ from common mammalian standards due to the use of delayed fertilisation. Phenology of bat reproduction, including length of pregnancy, which may vary in the same species at different latitudes, between years at the same site or between individuals within a colony, is influenced by ecological conditions. To assess factors influencing the course of pregnancy, we evaluated levels of blood progesterone in 20 female common noctule bats Nyctalus noctula. The bats were individually tagged and randomly divided into two groups with different hibernation ending points (i.e. a control group vs. a treatment group with one-week longer hibernation). Following emergence from hibernation, the bats were kept in a wooden box at a stable temperature of 22 degrees C. Results The majority of females gave birth to a single neonate (65%), but one female aborted her pups 2 days before the first successful births of other females. Based on development of progesterone concentration, we were able to define a number of different reproduction strategies, i.e. females with single offspring or twins, and females with supposed resorption of one embryo (embryonic mortality after implantation of the developing fertilised egg). Progesterone levels were much higher in females with two embryos during the first part of gestation and after birth. Progesterone levels were at their highest mid-gestation, with no difference between females carrying one or two foetuses. Length of gestation differed significantly between the two groups, with the longer hibernation (treatment) group having a roughly two-day shorter gestation period. Conclusions Female N. noctula are able to manipulate their litter size to balance immediate and future reproduction success. The estimated gestation length of approx. 49-days appears to be standard for N. noctula, with females optimising their thermoregulatory behaviour to keep the length of gestation as close to the standard as possible.

Cite

ZUKALOVA, Katerina; Veronika SEIDLOVA; Vladimir PIACEK; Monika NEMCOVA; Michal PRIBYL; Jiri PIKULA and Jan ZUKAL. One or two pups-optimal reproduction strategies of common noctule females. BMC Zoology. London: BioMed Central, 2022, vol. 7, No 1, p. 1-10. ISSN 2056-3132. Available from: https://dx.doi.org/10.1186/s40850-022-00119-8.

@article{2243992,
   author = {Zukalova, Katerina and Seidlova, Veronika and Piacek, Vladimir and Nemcova, Monika and Pribyl, Michal and Pikula, Jiri and Zukal, Jan},
   article_location = {London},
   article_number = {1},
   doi = {http://dx.doi.org/10.1186/s40850-022-00119-8},
   keywords = {Gestation; Progesterone; Body weight; Embryo resorption; Chiroptera},
   language = {eng},
   issn = {2056-3132},
   journal = {BMC Zoology},
   title = {One or two pups-optimal reproduction strategies of common noctule females},
   url = {https://doi.org/10.1186/s40850-022-00119-8},
   volume = {7},
   year = {2022}
}

TY  - JOUR
ID  - 2243992
AU  - Zukalova, Katerina - Seidlova, Veronika - Piacek, Vladimir - Nemcova, Monika - Pribyl, Michal - Pikula, Jiri - Zukal, Jan
PY  - 2022
TI  - One or two pups-optimal reproduction strategies of common noctule females
JF  - BMC Zoology
VL  - 7
IS  - 1
SP  - 1-10
EP  - 1-10
PB  - BioMed Central
SN  - 20563132
KW  - Gestation
KW  - Progesterone
KW  - Body weight
KW  - Embryo resorption
KW  - Chiroptera
UR  - https://doi.org/10.1186/s40850-022-00119-8
N2  - Background The success of animal reproduction is impacted by a trade-off between energetic costs and mortality associated with immediate vs. future reproductive attempts. The reproductive strategies of European insectivorous bats differ from common mammalian standards due to the use of delayed fertilisation. Phenology of bat reproduction, including length of pregnancy, which may vary in the same species at different latitudes, between years at the same site or between individuals within a colony, is influenced by ecological conditions. To assess factors influencing the course of pregnancy, we evaluated levels of blood progesterone in 20 female common noctule bats Nyctalus noctula. The bats were individually tagged and randomly divided into two groups with different hibernation ending points (i.e. a control group vs. a treatment group with one-week longer hibernation). Following emergence from hibernation, the bats were kept in a wooden box at a stable temperature of 22 degrees C. Results The majority of females gave birth to a single neonate (65%), but one female aborted her pups 2 days before the first successful births of other females. Based on development of progesterone concentration, we were able to define a number of different reproduction strategies, i.e. females with single offspring or twins, and females with supposed resorption of one embryo (embryonic mortality after implantation of the developing fertilised egg). Progesterone levels were much higher in females with two embryos during the first part of gestation and after birth. Progesterone levels were at their highest mid-gestation, with no difference between females carrying one or two foetuses. Length of gestation differed significantly between the two groups, with the longer hibernation (treatment) group having a roughly two-day shorter gestation period. Conclusions Female N. noctula are able to manipulate their litter size to balance immediate and future reproduction success. The estimated gestation length of approx. 49-days appears to be standard for N. noctula, with females optimising their thermoregulatory behaviour to keep the length of gestation as close to the standard as possible.
ER  -

ZUKALOVA, Katerina; Veronika SEIDLOVA; Vladimir PIACEK; Monika NEMCOVA; Michal PRIBYL; Jiri PIKULA and Jan ZUKAL. One or two pups-optimal reproduction strategies of common noctule females. \textit{BMC Zoology}. London: BioMed Central, 2022, vol.~7, No~1, p.~1-10. ISSN~2056-3132. Available from: https://dx.doi.org/10.1186/s40850-022-00119-8.

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