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Parasitoid species of Physokermes species on Norway spruce in Serbia

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2019
Authors
Simonović, Marija
Dervišević, Marina
Graora, Draga
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Abstract
During the years 2016-2018, the natural enemies of Physokermes species, namely, Physokermes hemicryphus (Dalman) and Ph. piceae (Schrank), were studied in Sebia. Populations of both species of the spruce bud scale were found at a very high level. Five species of predators were reared from Ph. hemicryphus colonies: Anthribus nebulosus Forster (Anthribidae), Exochomus quadripustulatus L., Scymnus abietis Paykull, Harmonia axyridis Pallas (Coccinellidae) and Chrysoperla carnea (Chrysopidae). The same predator species were reared from Ph. piceae colonies. The parasitoid species Aphycoides clavellatus (Dalm.), Microterys lunatus (Dalm.), Pseudorhopus testaceus (Ratzeburg) (Encyrtidae), Coccophagus lycimnia Walker (Aphelinidae) and Aprostocetus sp. (Eulophidae) were reared from both scale colonies while Eurytoma sp. (Eurytomidae), Metaphycus unicolor Hoffer (Encyrtidae) and Pachyneuron muscarum L. (Pteromalidae) were reared only from Ph. hemicryphus colonies. Coccophagus piceae Erdo...s (Aphelinidae) and Metaphycus stagnarum Hoffer (Encyrtidae) were identified as parasitoid associated only with Ph. piceae. The most abudant predator species in both scale colonies, Ph. hemicryphus and Ph. piceae, was A. nebulosus (45,72% and 57,11% respectively), while poliembrionic parasitoid, P. testaceus was the most abundant parasitoid species (42,02% and 28,25% respectively). Shannon-Weaver diversity index and Equitability index were used for analyzing the diversity of natural enemies on each locality. The calculated values of the Shannon-Weaver were as follows, Ph. hemicryphus: 0,3-1,33 and Ph. piceae: 0,37-0,87. Equitability index varied from 0,02 to 0,58 for Ph. hemicryphus natural enemies and from 0,097 to 0,21 Ph. piceae natural enemies, which indicate the unequal distribution of natural enemy species.

Keywords:
coccidae / natural enemies / diversity / Serbia
Source:
Program and abstract book: XVth International Symposium on Scale Insect Studies, Zagreb, Croatia, 17-20 June, 2019, 46-
Publisher:
  • Zagreb : Croatian Plant Protection Society

ISBN: 9789534863008

[ Google Scholar ]
Handle
https://hdl.handle.net/21.15107/rcub_rivec_605
URI
http://RIVeC.institut-palanka.rs/handle/123456789/605
Collections
  • Radovi istraživača 2 / Researcher's papers 2
Institution/Community
Institut za povrtarstvo
TY  - CONF
AU  - Simonović, Marija
AU  - Dervišević, Marina
AU  - Graora, Draga
PY  - 2019
UR  - http://RIVeC.institut-palanka.rs/handle/123456789/605
AB  - During the years 2016-2018, the natural enemies of Physokermes species, namely, Physokermes hemicryphus
(Dalman) and Ph. piceae (Schrank), were studied in Sebia. Populations of both species of the spruce bud scale
were found at a very high level. Five species of predators were reared from Ph. hemicryphus colonies: Anthribus
nebulosus Forster (Anthribidae), Exochomus quadripustulatus L., Scymnus abietis Paykull, Harmonia axyridis Pallas
(Coccinellidae) and Chrysoperla carnea (Chrysopidae). The same predator species were reared from Ph. piceae
colonies. The parasitoid species Aphycoides clavellatus (Dalm.), Microterys lunatus (Dalm.), Pseudorhopus testaceus
(Ratzeburg) (Encyrtidae), Coccophagus lycimnia Walker (Aphelinidae) and Aprostocetus sp. (Eulophidae) were
reared from both scale colonies while Eurytoma sp. (Eurytomidae), Metaphycus unicolor Hoffer (Encyrtidae) and
Pachyneuron muscarum L. (Pteromalidae) were reared only from Ph. hemicryphus colonies. Coccophagus piceae
Erdos (Aphelinidae) and Metaphycus stagnarum Hoffer (Encyrtidae) were identified as parasitoid associated only
with Ph. piceae. The most abudant predator species in both scale colonies, Ph. hemicryphus and Ph. piceae, was A.
nebulosus (45,72% and 57,11% respectively), while poliembrionic parasitoid, P. testaceus was the most abundant
parasitoid species (42,02% and 28,25% respectively). Shannon-Weaver diversity index and Equitability index were
used for analyzing the diversity of natural enemies on each locality. The calculated values of the Shannon-Weaver
were as follows, Ph. hemicryphus: 0,3-1,33 and Ph. piceae: 0,37-0,87. Equitability index varied from 0,02 to 0,58 for
Ph. hemicryphus natural enemies and from 0,097 to 0,21 Ph. piceae natural enemies, which indicate the unequal
distribution of natural enemy species.
PB  - Zagreb : Croatian Plant Protection Society
C3  - Program and abstract book: XVth International Symposium on Scale Insect Studies, Zagreb, Croatia, 17-20 June
T1  - Parasitoid species of Physokermes species on Norway spruce in Serbia
SP  - 46
UR  - https://hdl.handle.net/21.15107/rcub_rivec_605
ER  - 
@conference{
author = "Simonović, Marija and Dervišević, Marina and Graora, Draga",
year = "2019",
abstract = "During the years 2016-2018, the natural enemies of Physokermes species, namely, Physokermes hemicryphus
(Dalman) and Ph. piceae (Schrank), were studied in Sebia. Populations of both species of the spruce bud scale
were found at a very high level. Five species of predators were reared from Ph. hemicryphus colonies: Anthribus
nebulosus Forster (Anthribidae), Exochomus quadripustulatus L., Scymnus abietis Paykull, Harmonia axyridis Pallas
(Coccinellidae) and Chrysoperla carnea (Chrysopidae). The same predator species were reared from Ph. piceae
colonies. The parasitoid species Aphycoides clavellatus (Dalm.), Microterys lunatus (Dalm.), Pseudorhopus testaceus
(Ratzeburg) (Encyrtidae), Coccophagus lycimnia Walker (Aphelinidae) and Aprostocetus sp. (Eulophidae) were
reared from both scale colonies while Eurytoma sp. (Eurytomidae), Metaphycus unicolor Hoffer (Encyrtidae) and
Pachyneuron muscarum L. (Pteromalidae) were reared only from Ph. hemicryphus colonies. Coccophagus piceae
Erdos (Aphelinidae) and Metaphycus stagnarum Hoffer (Encyrtidae) were identified as parasitoid associated only
with Ph. piceae. The most abudant predator species in both scale colonies, Ph. hemicryphus and Ph. piceae, was A.
nebulosus (45,72% and 57,11% respectively), while poliembrionic parasitoid, P. testaceus was the most abundant
parasitoid species (42,02% and 28,25% respectively). Shannon-Weaver diversity index and Equitability index were
used for analyzing the diversity of natural enemies on each locality. The calculated values of the Shannon-Weaver
were as follows, Ph. hemicryphus: 0,3-1,33 and Ph. piceae: 0,37-0,87. Equitability index varied from 0,02 to 0,58 for
Ph. hemicryphus natural enemies and from 0,097 to 0,21 Ph. piceae natural enemies, which indicate the unequal
distribution of natural enemy species.",
publisher = "Zagreb : Croatian Plant Protection Society",
journal = "Program and abstract book: XVth International Symposium on Scale Insect Studies, Zagreb, Croatia, 17-20 June",
title = "Parasitoid species of Physokermes species on Norway spruce in Serbia",
pages = "46",
url = "https://hdl.handle.net/21.15107/rcub_rivec_605"
}
Simonović, M., Dervišević, M.,& Graora, D.. (2019). Parasitoid species of Physokermes species on Norway spruce in Serbia. in Program and abstract book: XVth International Symposium on Scale Insect Studies, Zagreb, Croatia, 17-20 June
Zagreb : Croatian Plant Protection Society., 46.
https://hdl.handle.net/21.15107/rcub_rivec_605
Simonović M, Dervišević M, Graora D. Parasitoid species of Physokermes species on Norway spruce in Serbia. in Program and abstract book: XVth International Symposium on Scale Insect Studies, Zagreb, Croatia, 17-20 June. 2019;:46.
https://hdl.handle.net/21.15107/rcub_rivec_605 .
Simonović, Marija, Dervišević, Marina, Graora, Draga, "Parasitoid species of Physokermes species on Norway spruce in Serbia" in Program and abstract book: XVth International Symposium on Scale Insect Studies, Zagreb, Croatia, 17-20 June (2019):46,
https://hdl.handle.net/21.15107/rcub_rivec_605 .

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