Life cycles and host – parasitoid relationships of five species of Leucospis wasps in Argentina (Hymenoptera: Leucospidae)

Life cycles and host – parasitoid relationships of five species of Leucospis wasps in Argentina (Hymenoptera: Leucospidae)

The genus Leucospis Fabricius is comprised of parasitoid wasps relatively uncommon in nature. Their immature stages develop on aculeate Hymenoptera, in particular solitary bees, but hosts are known for only around 25 Leucospis species (about 20% of 115–120 world species), so the true relationship of this family with bees is largely unknown. Here we report on individuals of five species of Leucospis wasps which emerged from nests of different bee and wasp species during distinct sampling periods during a trap-nesting programme, in two contrasting areas: agroecosystems and natural habitats in the Pampean region. Some of these nests were parasitised by L. cayennensis Westwood, L. coxalis Kirby, L. egaia Walker, L. pulchriceps Cameron and L. signifera Bouček. Our results expand the available information of host species for L. cayennensis, L. coxalis, L. egaia and L. pulchriceps and represent the first record of hosts associated with L. signifera. The hosts were only bee species of the genera Centris, Tetrapedia (family Apidae) and Megachile (Megachilidae). These species were more abundant in the natural reserve than in agro-ecosystems, suggesting that anthropogenic activities could negatively affect their populations. Most nests were attacked in one (43.7%) or two (40.7%) cells, but the remaining nests (16.5%) had more (up to seven cells). However, the position of the attacked cells was variable, suggesting that females of Leucospis species oviposit in recently built cells, and that the hatching of larvae is delayed, or that the first larval stage waits until the host larva reaches a sufficient size to attack.

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Main Authors: Torretta, Juan Pablo, Molina, Gonzalo A. R., Aquino, Daniel A.
Format: Texto biblioteca
Language:eng
Subjects:APIDAE, BIOLOGY, CENTRIS, MEGACHILE, MEGACHILIDAE, PARASITOID BEHAVIOUR, TETRAPEDIA,
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spelling KOHA-OAI-AGRO:479012022-08-01T12:47:38Zhttp://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=47901http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=AAGLife cycles and host – parasitoid relationships of five species of Leucospis wasps in Argentina (Hymenoptera: Leucospidae)Torretta, Juan PabloMolina, Gonzalo A. R.Aquino, Daniel A.textengapplication/pdfThe genus Leucospis Fabricius is comprised of parasitoid wasps relatively uncommon in nature. Their immature stages develop on aculeate Hymenoptera, in particular solitary bees, but hosts are known for only around 25 Leucospis species (about 20% of 115–120 world species), so the true relationship of this family with bees is largely unknown. Here we report on individuals of five species of Leucospis wasps which emerged from nests of different bee and wasp species during distinct sampling periods during a trap-nesting programme, in two contrasting areas: agroecosystems and natural habitats in the Pampean region. Some of these nests were parasitised by L. cayennensis Westwood, L. coxalis Kirby, L. egaia Walker, L. pulchriceps Cameron and L. signifera Bouček. Our results expand the available information of host species for L. cayennensis, L. coxalis, L. egaia and L. pulchriceps and represent the first record of hosts associated with L. signifera. The hosts were only bee species of the genera Centris, Tetrapedia (family Apidae) and Megachile (Megachilidae). These species were more abundant in the natural reserve than in agro-ecosystems, suggesting that anthropogenic activities could negatively affect their populations. Most nests were attacked in one (43.7%) or two (40.7%) cells, but the remaining nests (16.5%) had more (up to seven cells). However, the position of the attacked cells was variable, suggesting that females of Leucospis species oviposit in recently built cells, and that the hatching of larvae is delayed, or that the first larval stage waits until the host larva reaches a sufficient size to attack.The genus Leucospis Fabricius is comprised of parasitoid wasps relatively uncommon in nature. Their immature stages develop on aculeate Hymenoptera, in particular solitary bees, but hosts are known for only around 25 Leucospis species (about 20% of 115–120 world species), so the true relationship of this family with bees is largely unknown. Here we report on individuals of five species of Leucospis wasps which emerged from nests of different bee and wasp species during distinct sampling periods during a trap-nesting programme, in two contrasting areas: agroecosystems and natural habitats in the Pampean region. Some of these nests were parasitised by L. cayennensis Westwood, L. coxalis Kirby, L. egaia Walker, L. pulchriceps Cameron and L. signifera Bouček. Our results expand the available information of host species for L. cayennensis, L. coxalis, L. egaia and L. pulchriceps and represent the first record of hosts associated with L. signifera. The hosts were only bee species of the genera Centris, Tetrapedia (family Apidae) and Megachile (Megachilidae). These species were more abundant in the natural reserve than in agro-ecosystems, suggesting that anthropogenic activities could negatively affect their populations. Most nests were attacked in one (43.7%) or two (40.7%) cells, but the remaining nests (16.5%) had more (up to seven cells). However, the position of the attacked cells was variable, suggesting that females of Leucospis species oviposit in recently built cells, and that the hatching of larvae is delayed, or that the first larval stage waits until the host larva reaches a sufficient size to attack.APIDAEBIOLOGYCENTRISMEGACHILEMEGACHILIDAEPARASITOID BEHAVIOURTETRAPEDIAJournal of natural history
institution UBA FA
collection Koha
country Argentina
countrycode AR
component Bibliográfico
access En linea
En linea
databasecode cat-ceiba
tag biblioteca
region America del Sur
libraryname Biblioteca Central FAUBA
language eng
topic APIDAE
BIOLOGY
CENTRIS
MEGACHILE
MEGACHILIDAE
PARASITOID BEHAVIOUR
TETRAPEDIA
APIDAE
BIOLOGY
CENTRIS
MEGACHILE
MEGACHILIDAE
PARASITOID BEHAVIOUR
TETRAPEDIA
spellingShingle APIDAE
BIOLOGY
CENTRIS
MEGACHILE
MEGACHILIDAE
PARASITOID BEHAVIOUR
TETRAPEDIA
APIDAE
BIOLOGY
CENTRIS
MEGACHILE
MEGACHILIDAE
PARASITOID BEHAVIOUR
TETRAPEDIA
Torretta, Juan Pablo
Molina, Gonzalo A. R.
Aquino, Daniel A.
Life cycles and host – parasitoid relationships of five species of Leucospis wasps in Argentina (Hymenoptera: Leucospidae)
description The genus Leucospis Fabricius is comprised of parasitoid wasps relatively uncommon in nature. Their immature stages develop on aculeate Hymenoptera, in particular solitary bees, but hosts are known for only around 25 Leucospis species (about 20% of 115–120 world species), so the true relationship of this family with bees is largely unknown. Here we report on individuals of five species of Leucospis wasps which emerged from nests of different bee and wasp species during distinct sampling periods during a trap-nesting programme, in two contrasting areas: agroecosystems and natural habitats in the Pampean region. Some of these nests were parasitised by L. cayennensis Westwood, L. coxalis Kirby, L. egaia Walker, L. pulchriceps Cameron and L. signifera Bouček. Our results expand the available information of host species for L. cayennensis, L. coxalis, L. egaia and L. pulchriceps and represent the first record of hosts associated with L. signifera. The hosts were only bee species of the genera Centris, Tetrapedia (family Apidae) and Megachile (Megachilidae). These species were more abundant in the natural reserve than in agro-ecosystems, suggesting that anthropogenic activities could negatively affect their populations. Most nests were attacked in one (43.7%) or two (40.7%) cells, but the remaining nests (16.5%) had more (up to seven cells). However, the position of the attacked cells was variable, suggesting that females of Leucospis species oviposit in recently built cells, and that the hatching of larvae is delayed, or that the first larval stage waits until the host larva reaches a sufficient size to attack.
format Texto
topic_facet APIDAE
BIOLOGY
CENTRIS
MEGACHILE
MEGACHILIDAE
PARASITOID BEHAVIOUR
TETRAPEDIA
author Torretta, Juan Pablo
Molina, Gonzalo A. R.
Aquino, Daniel A.
author_facet Torretta, Juan Pablo
Molina, Gonzalo A. R.
Aquino, Daniel A.
author_sort Torretta, Juan Pablo
title Life cycles and host – parasitoid relationships of five species of Leucospis wasps in Argentina (Hymenoptera: Leucospidae)
title_short Life cycles and host – parasitoid relationships of five species of Leucospis wasps in Argentina (Hymenoptera: Leucospidae)
title_full Life cycles and host – parasitoid relationships of five species of Leucospis wasps in Argentina (Hymenoptera: Leucospidae)
title_fullStr Life cycles and host – parasitoid relationships of five species of Leucospis wasps in Argentina (Hymenoptera: Leucospidae)
title_full_unstemmed Life cycles and host – parasitoid relationships of five species of Leucospis wasps in Argentina (Hymenoptera: Leucospidae)
title_sort life cycles and host – parasitoid relationships of five species of leucospis wasps in argentina (hymenoptera: leucospidae)
url http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=47901
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