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Is the Solitary Bee Monoeca Haemorrhoidalis Trying to Escape

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Is the Solitary Bee Monoeca Haemorrhoidalis Trying to Escape Hide and seek: is the solitary bee Monoeca haemorrhoidalis trying to escape from its cleptoparasite Protosiris gigas (Hymenoptera, Apidae: Tapinotaspidini; Osirini)? Léo Correia da Rocha-Filho, Gabriel A. R. Melo To cite this version: Léo Correia da Rocha-Filho, Gabriel A. R. Melo. Hide and seek: is the solitary bee Monoeca haemor- rhoidalis trying to escape from its cleptoparasite Protosiris gigas (Hymenoptera, Apidae: Tapinotas- pidini; Osirini)?. Apidologie, Springer Verlag, 2017, 48 (2), pp.262-270. 10.1007/s13592-016-0472-4. hal-01591724 HAL Id: hal-01591724 https://hal.archives-ouvertes.fr/hal-01591724 Submitted on 21 Sep 2017 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. Apidologie (2017) 48:262–270 Original article * INRA, DIB and Springer-Verlag France, 2016 DOI: 10.1007/s13592-016-0472-4 Hide and seek: is the solitary bee Monoeca haemorrhoidalis trying to escape from its cleptoparasite Protosiris gigas (Hymenoptera, Apidae: Tapinotaspidini; Osirini)? 1 2 Léo Correia da ROCHA-FILHO , Gabriel A. R. MELO 1Departamento de Biologia, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto-FFCLRP, Universidade de São Paulo-USP, 14040-901, Ribeirão Preto, São Paulo, Brazil 2Laboratório de Biologia Comparada de Hymenoptera, Departamento de Zoologia, Universidade Federal do Paraná, Curitiba, PR 80060-000, Brazil Received 27 January 2016 – Revised 12 August 2016 – Accepted 23 August 2016 Abstract – Cleptoparasites play a key ecological role by reducing their host populations. In order to study the phenological patterns of the natural enemies of the bee Monoeca haemorrhoidalis (Smith), four emergence traps were installed in two nest aggregations during the activity period of this solitary bee species. Four species of natural enemies were sampled in the emergence traps: Tetraolytta gerardi (Pic), Tetraonyx distincticollis Pic (Meloidae), Protosiris gigas Melo (Apidae), and Pseudomethoca spixi (Diller) (Mutillidae). Monoeca haemorrhoidalis showed emergence patterns characterized by bimodal curves with two distinct peaks throughout its activity period in both years. Individuals of P. gigas started to emerge during the first peak of its host, but the emergence curve of this cleptoparasite was followed by a decline in abundance of M. haemorrhoidalis specimens in both years. The abrupt decline in the emergence period of M. haemorrhoidalis could be a temporal strategy against the attack of P. gi ga s since the activity period of this cuckoo bee occurred during the lowest number of emergent host individuals. cleptoparasitism / host-parasite relationship / natural enemy / temporal segregation 1. INTRODUCTION Cleptoparasites exert an environmental pressure on the reproductive biology of their hosts. In some Cleptoparasitism is a phenomenon widely ob- cases, the attack performed by those brood para- served among solitary bee and wasp species (Evans sites is the dominant mortality factor of immature ’ 1966;Batra1984;O’Neill 2001; Michener 2007). bees and wasps species (Bohart et al. 1960; Rozen By definition, a cleptoparasitic female invades a 1984; Rosenheim 1987; Vinson et al. 1987), even provoking local extinction of nest aggregations host nest and deposits her egg in one or more brood (Batra 1966; Simon-Thomas and Simon-Thomas cells and its larvae feed on the provisions stored by 1972;Knerer1973). the host female for her offspring. The host larvae Cleptoparasites employ different mechanisms can be killed by the cleptoparasitic female or by the and strategies to reach brood cells without being parasite larvae, which have specialized sharp man- detected by their hosts. A common behavior that dibles (Wcislo 1987). Cleptoparasites thus avoid has been widely documented is displayed by some the costs of brood care (Wcislo 1987)whichin- females that land near the host nest entrance and clude both nest construction and food collection. wait for the host female to leave her nest (Bohart and Youssef 1972; Rozen and Snelling 1986; Garófalo and Rozen 2001; Alves-dos-Santos et al. Corresponding author: L. Rocha-Filho, 2002;Vinsonetal.2011). Other brood parasitic [email protected] species possess a similar qualitative pattern of odor Manuscript editor: James Nieh compounds from the mandibular glands or Is M. haemorrhoidalis escaping from P. gigas ? 263 cuticular hydrocarbons to their host species. This precipitation can reach 2500 mm (Maak 2002). chemical camouflage would permit the parasitic Climatological data were obtained from the Instituto females to invade the nests undetected by olfaction Meteorológico SIMEPAR (Sistema Meteorológico do (Tengö and Bergström 1977; Strohm et al. 2008). Paraná), of the Meteorological Station of Pinhais, the A remarkable strategy recently documented by closest station to the study area. Winterhagen (2015) shows that the chrysidid Omalus biaccinctus (Buysson) oviposits on living 2.2. Nest aggregations aphids that will be collected by the host wasp as prey, thus avoiding the risk of confrontations with Two of the four nest sites (B and D) studied by host females by an indirect access to the nests. Rocha-Filho and Melo (2011) were selected for instal- Host species, in turn, have evolved counter- lation of the emergence traps. Both nest areas are locat- strategies to reduce the mortality rates caused by ed in exposed areas along the main trail that crosses the brood parasites. Within the tactics of parasite reserve. Nest site B (25°29′60″ S and 48°59′03″ W) is avoidance employed by host bees and wasps are located in an open area inside the forest, and it covers an spatial and temporal strategies (Rosenheim 1989; area of 100 m2, while nest site D (25°28′44″ Sand Strohm et al. 2001), aggregated nesting 48°58′08″ W) is 138 m2 and at the end of the reserve (Rosenheim 1990), and aggressive behavior main trail. The two study sites are approximately against female parasites (Bohart and Youssef 2500 m apart from each other. Rozen et al. (2006)and 1972; Rocha-Filho et al. 2008). Rocha-Filho and Melo (2011) recorded the presence of In a study on the nesting biology of the solitary the cuckoo bee P. gigas only at nest site D. For addi- bee Monoeca haemorrhoidalis (Smith), Rocha- tional details on the nest site characteristics, see Rocha- Filho & Melo (2011) recorded 27 species of natural Filho and Melo (2011). enemies associated with the nest aggregations. Only four of them—the meloid beetles Tetraolytta 2.3. Emergence traps gerardi (Pic) and Tetraonyx distincticollis Pic, the cuckoo bee Protosiris gigas Melo (Apidae), and the In order to obtain information regarding sex ratio, parasitoid wasp Pseudomethoca spixi (Diller) (cited emergence period, survey of natural enemies, and their as P. melanocephala ) (Mutillidae)—were sampled parasitism rate, emergence traps (Figure 1a) were set up in emergence traps set in two nest aggregations of at the nest sites. These traps consisted of a 50 cm high the host bee. Herein, we aim to investigate the pyramidal frame made of wood poles, with a basal area following questions: Are the seasonality patterns of of 1 m2 and an apical area of 0.03 m2. The frame was the different natural enemies of M. haemorrhoidalis covered with black tulle and capped with an inverted synchronized? In particular, is there synchrony be- plastic container with a central opening surrounded by a tween host and cleptoparasite bee activity periods? well which contained a preservative consisting of 10 mL of 10 % formaldehyde in 1 l of water, which 2. MATERIAL AND METHODS was replaced monthly. This container was surrounded by another to prevent insects escape. 2.1. Study site Two emergence traps were randomly arranged at each nest site giving a total of 4 m2 of sampled area. Fieldwork was carried out at the Área de Proteção The emergence traps were installed in September 2005 Ambiental Mananciais da Serra (MS) (25°29′ S, 48°58′ and September 2006 before the nest activities of W), between 900 and 1400 m above sea level, in eastern M. haemorrhoidalis had started. The position of the Paraná State, southern Brazil. This area is covered with traps in the nest aggregations was changed from 1 year intact Atlantic forest and encompasses 2340 ha (ITCF to the other. Data collection was performed weekly until 1987; Struminski 2001). The climate of this region is 1 week after the end of the activity period of characterized by high rainfall in all months, rainy summers, M. haemorrhoidalis in both years. This species has a and winters marked by occurrence of frosts. The mean univoltine life cycle; adults are active between October annual temperature oscillates between 15 to 19 °C, the and March (Rocha-Filho and Melo 2011). Rocha-Filho relative humidity varies from 80 to 85 %, and annual and Melo (2011) observed that there was an expectation 264 da Rocha-Filho L.C. and Melo G.A.R. Figure 1. a Emergence trap model set in the nest aggregations of Monoeca haemorrhoidalis . Photo : Kelli Ramos. b Percentage of Monoeca haemorrhoidalis specimens and of its natural enemies that emerged in the traps set in areas B and D in the nesting sites, in southern Brazil of approximately 1 month in the activity period of Padre Jesus Santiago Moure of the Zoology Department M. haemorrhoidalis from 1 year to the next. of Universidade Federal do Paraná (DZUP). Considering this result, fieldwork was conducted from 24 September 2005 to 04 March 2006 in the first year 3. RESULTS (year 1), for a total of 162 days, while in the second year the emergence traps were inspected over a total of During the whole period in which the emergence 142 days between 25 September 2006 to 12 February traps were set in the field, five species represented by 2007 (year 2).
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