Ontogeny of the immune system in harlequin ladybird, Harmonia
axyridis

a 2016

Ontogeny of the immune system in harlequin ladybird, Harmonia axyridis

ŘEŘICHA, Michal, Pavel DOBEŠ, Pavel HYRŠL and Michal KNAPP

Basic information

Original name

Ontogeny of the immune system in harlequin ladybird, Harmonia axyridis

Authors

ŘEŘICHA, Michal (203 Czech Republic), Pavel DOBEŠ (203 Czech Republic, guarantor, belonging to the institution), Pavel HYRŠL (203 Czech Republic, belonging to the institution) and Michal KNAPP (203 Czech Republic)

Edition

49th Annual Meeting of the Society for Invertebrate Pathology, 2016

Other information

Language

English

Type of outcome

Konferenční abstrakt

Field of Study

30102 Immunology

Country of publisher

France

Confidentiality degree

není předmětem státního či obchodního tajemství

RIV identification code

RIV/00216224:14310/16:00090537

Organization unit

Faculty of Science

Keywords (in Czech)

imunita; ontogeneze; Harmonia axyridis; slunéčko

Keywords in English

immunity; ontogeny; Harmonia axyridis; harlequin ladybird

Abstract

V originále

The harlequin ladybird, Harmonia axyridis, is considered to be one of the world’s most important invasive insects. It has been spread over substantial part of Europe and North America in last decades and its invasion is potentially detrimental for native ladybird species. The powerful immune system makes harlequin ladybird highly resistant to diseases that affect other ladybird species and is probably one of the main reasons of its successful invasiveness. In this study, we examined the basic immune parameters including concentration of haemocytes and antimicrobial activity in haemolymph during ontogenetic development (from the 2nd larval instar to the 32 days old adults). The concentration of haemocytes in haemolymph of H. axyridis does not change significantly during larval stages and is quite low until the prepupal stage (about 5500 haemocytes per 1 ul of haemolymph). After the metamorphosis the concentration of haemocytes rapidly increases during first eight days of adulthood and then it remains constant (around 30000 haemocytes per 1 ul of haemolymph). Similarly to the haemocyte level, the protein content in haemolymph was significantly influenced by the metamorphosis which caused the temporal decrease in protein concentration between prepupa and newly hatched adults. Subsequently, the protein concentration gradually increased within first 16 days of adulthood. The haemolymph of H. axyridis exhibited very high antimicrobial activity against Escherichia coli which increased from larval stages till adults. Surprisingly, we did not detect any significant differences in measured parameters between sexes of H. axyridis adults.

Citovat

ŘEŘICHA, Michal, Pavel DOBEŠ, Pavel HYRŠL and Michal KNAPP. Ontogeny of the immune system in harlequin ladybird, Harmonia axyridis. In 49th Annual Meeting of the Society for Invertebrate Pathology. 2016.

@proceedings{1351280,
   author = {Řeřicha, Michal and Dobeš, Pavel and Hyršl, Pavel and Knapp, Michal},
   booktitle = {49th Annual Meeting of the Society for Invertebrate Pathology},
   keywords = {immunity; ontogeny; Harmonia axyridis; harlequin ladybird},
   language = {eng},
   title = {Ontogeny of the immune system in harlequin ladybird, Harmonia axyridis},
   year = {2016}
}

TY  - CONF
ID  - 1351280
AU  - Řeřicha, Michal - Dobeš, Pavel - Hyršl, Pavel - Knapp, Michal
PY  - 2016
TI  - Ontogeny of the immune system in harlequin ladybird, Harmonia axyridis
KW  - immunity
KW  - ontogeny
KW  - Harmonia axyridis
KW  - harlequin ladybird
N2  - The harlequin ladybird, Harmonia axyridis, is considered to be one of the world’s most important invasive insects. It has been spread over substantial part of Europe and North America in last decades and its invasion is potentially detrimental for native ladybird species. The powerful immune system makes harlequin ladybird highly resistant to diseases that affect other ladybird species and is probably one of the main reasons of its successful invasiveness. In this study, we examined the basic immune parameters including concentration of haemocytes and antimicrobial activity in haemolymph during ontogenetic development (from the 2nd larval instar to the 32 days old adults). The concentration of haemocytes in haemolymph of H. axyridis does not change significantly during larval stages and is quite low until the prepupal stage (about 5500 haemocytes per 1 ul of haemolymph). After the metamorphosis the concentration of haemocytes rapidly increases during first eight days of adulthood and then it remains constant (around 30000 haemocytes per 1 ul of haemolymph). Similarly to the haemocyte level, the protein content in haemolymph was significantly influenced by the metamorphosis which caused the temporal decrease in protein concentration between prepupa and newly hatched adults. Subsequently, the protein concentration gradually increased within first 16 days of adulthood. The haemolymph of H. axyridis exhibited very high antimicrobial activity against Escherichia coli which increased from larval stages till adults. Surprisingly, we did not detect any significant differences in measured parameters between sexes of H. axyridis adults.
ER  -

ŘEŘICHA, Michal, Pavel DOBEŠ, Pavel HYRŠL and Michal KNAPP. Ontogeny of the immune system in harlequin ladybird, Harmonia axyridis. In \textit{49th Annual Meeting of the Society for Invertebrate Pathology}. 2016.

Detailed Information on Publication Record