The status of the red mason bee in the orchards of Ankara and Çankırı Provinces, Turkey
Year 2020,
Volume: 44 Issue: 2, 249 - 258, 01.06.2020
Yasemin Güler
Abstract
Research on the red mason bee, Osmia bicornis (L., 1758) (Hymenoptera: Megachilidae), which is an important pollinator particularly for stone fruits, in Turkey is limited to the last decade. After the first report in sweet cherry orchards of Afyonkarahisar, this study aimed to determine the presence and the density of the red mason bee and to collect data on its nesting biology between 2014 and 2016 in the mixed orchards of Ankara and Çankırı Provinces. Although the red mason bee was detected in almost all orchards sampled using the Malaise trap, the nesting activity was recorded in only four orchards in 2014 and 2015. Reeds with an inner diameter of 6-9 mm and a length of 15-25 cm were used as the artificial trap-nests. It was determined that the percentage of the nesting success varies between 6 and 48%. The cocoons that originated from the nests were placed in the incubator to stimulate diapause. Then, the temperature of the incubator was gradually increased to complete the life cycle of the species with starting the bud stage of stone fruits in early spring. Consequently, the emergence rates of the adults from the 135 cocoons collected in 2014 were 36 to 95%. It was not recorded the adult emergence from any of the 143 cocoons obtained from the dissections of the nests in 2015. The sex ratios, both between orchards and from 2014 to 2015 in the same orchard ranged between 1:1.5-1:4 (♀:♂). The results are discussed based on stress conditions such as weather, limited pollen and nectar sources and insecticide application.
Supporting Institution
General Directorate of Agricultural Research, Ministry of Agriculture and Forestry
Project Number
TAGEM-BS-12/01-06/01-28
Thanks
I wish to thank Prof. Ayla Tüzün and Dr. Samet Eray Yalnız (Ankara University, Turkey) for identification of the Ancistrocerus spp. I am also grateful to my colleagues Dr. Aygün Şahin (Boston, Massachusetts) for editing of the English version and her valuable suggestions and Pınar Güzel (Ankara Food Control Laboratory Directorate, Turkey) for identification of flowering plants in the meadowland. The research was financially supported by the General Directorate of Agricultural Research, Ministry of Agriculture and Forestry (TAGEM-BS-12/01-06/01-28).
References
- Aslan, C. E., C. T. Liang, B. Galindo, K. Hill & W. Topete, 2016. The role of honey bees as pollinators in natural areas. Natural Areas Journal, 36 (4): 478-488.
- Banaszak, J. & L. Romasenko, 1998. Megachilid Bees of Europe. Pedagogical University of Bydgoszcz, Poland, 239 pp.
- Benedek, P., 2008. Preliminary studies on propagating natural mason bee (mixed Osmia cornuta and O. rufa) populations in artificial media at the sites for fruit orchard pollination. International Journal of Horticultural Science, 14 (1-2): 95-101.
- Bertrand, C., P. W. Eckerter, L. Ammann, M. H. Entling, E. Gobet, F. Herzog, L. Mestre, W. Tinner & M. Albrecht, 2019. Seasonal shifts and complementary use of pollen sources by two bees, a lacewing and a ladybeetle species in European agricultural landscapes. Journal of Applied Ecology, 56: 2431-2442.
- Boesi, R., C. Polidori, J. Tormos, S. Bevacqua, J. D. Asis & F. Andrietti, 2005. Trap-nesting Ancistrocerus sikhimensis (Hymenoptera: Eumenidae) in Nepal: nest structure and associates (Hymenoptera: Chrysididae; Acarina: Saproglyphidae). Florida Entomologist, 88: 135-140.
- Bosch, J. & M. Blas, 1994. Foraging behavior and pollinating efficiency of Osmia cornuta and Apis mellifera on almond (Hymenoptera, Megachilidae and Apidae). Applied Entomology and Zoology, 29: 1-9.
- Bosch, J. & W. P. Kemp, 2004. Effect of pre-wintering and wintering temperature regimes on weight loss, survival, and emergence time in the mason bee Osmia cornuta (Hymenoptera: Megachilidae). Apidologie, 35 (5): 469-479.
- Budriene, A., E. Budrys & Z. Nevronyte, 2004. Solitary Hymenoptera Aculeata inhabiting trap-nests in Lithuania: nesting cavity choice and niche overlap. Latvijas Entomologs, 41: 19-31.
- Danks, H. V., 1971. Nest mortality factors in stem-nesting aculeate Hymenoptera. Journal of Animal Ecology, 40 (1): 79-82.
- Eeraerts, M., G. Smagghe & I. Meeus. 2019a. Pollinator diversity, floral resources and semi-natural habitat, instead of honey bees and intensive agriculture, enhance pollination service to sweet cherry. Agriculture, Ecosystems and Environment, 284: 106586.
- Eeraerts, M., R. Vanderhaegen, G. Smagghe & I. Meeus, 2019b. Pollination efficiency and foraging behaviour of honey bees and non-Apis bees to sweet cherry. Agricultural and Forest Entomology, 22 (1): 75-82.
- Garibaldi, L. A., I. Steffan-Dewenter, R. Winfree, M. A. Aizen, R. Bommarco, S. A. Cunningham & A. M. Klein, 2013. Wild pollinators enhance fruit set of crops regardless of honey bee abundance. Science, 339 (6127): 1608-1611.
- Güler, Y., 2012. Sultandağı havzası kiraz bahçelerindeki Osmia (Hymenoptera: Megachilidae) türleri üzerinde yürütülen yapay yuva çalışmaları. Bitki Koruma Bülteni, 52 (4): 325-336.
- Güler, Y. & F. Dikmen, 2013. Potential bee pollinators of sweet cherry in inclement weather conditions. Journal of the Entomological Research Society, 15 (3): 9-19.
- Güler, Y., F. Dikmen, D. Töre & A. M. Aytekin, 2014. Contributions on the current knowledge of the diversity of the Megachilidae (Apoidea: Hymenoptera) fauna in the Mediterranean Region of Turkey. Türkiye Entomoloji Dergisi, 38 (3): 255-278.
- Güler, Y. & A. Özkök, 2016. Encountered pollen in nests two Osmia species (Hym.: Megachilidae) from sweet cherry orchards in Sultandağı town (Afyonkarahisar, Turkey). Hacettepe Journal of Biolology and Chemistry, 44 (1): 15-19.
- Hansted, L., B. W. W. Grout, J. Eilenberg, I. B. Dencker & T. B Toldam-Andersen, 2012. The importance of bee pollination of the sour cherry (Prunus cerasus) cultivar ‘Stevnsbaer’ in Denmark. Journal of Pollination Ecology, 10 (6): 124-129.
- Hansted, L., B. W. W. Grout, T. B. Toldam-Andersen & J. Eilenberg, 2014. An assessment of Osmia rufa (syn. bicornis) as a pollinator of the sour cherry (Prunus cerasus) cv. Stevnsbaer in eastern Denmark. Journal of Apicultural Research, 53 (1): 177-182.
- Hung, K. L. J., J. M. Kingston, M. Albrecht, D. A. Holway & J. R. Kohn, 2018. The worldwide importance of honey bees as pollinators in natural habitats. Proceeding of the Royal Society B, 285: 1-8.
- Ivanov, S. P., 2006. The nesting of Osmia rufa (L.) (Hymenoptera, Megachilidae) in the Crimea: structure and composition of nests. Entomological Review, 86 (5): 524-533.
- Klein, A. M., C. Brittain, S. D. Hendrix, R. Thorp, N. Williams & C. Kremen, 2012. Wild pollination services to California almond rely on semi-natural habitat: Wild pollination services to California almond. Journal of Applied Ecology, 49: 723-732.
- Kremen, C., 2008. “Chapter 2: Crop Pollination Services from Wild Bees, 10-26”. In: Bee Pollination in Agricultural Ecosystems (Eds. R. J. Rosalind & T. L. Pitts-Singer). Oxford University Press, Inc. New York, 248 pp.
- Krunić, M. & L. Stanisavljević, 2006a. Augmentation of managed populations of Osmia cornuta and O. rufa (Hymenoptera: Megachilidae) in Southeastern Europe. European Journal of Entomology, 103 (3): 695-697.
- Krunić, M. & L. Stanisavljević, 2006b. The Biology of European Orchard Bee Osmia cornuta (Latr.) (Hymenoptera: Megachilidae). Izdavač Faculty of Biology University of Belgrade, 137 pp.
- Krunić, M., L. Stanisavljević, M. Pinzauti & A. Felicioli, 2005. The accompanying fauna of Osmia cornuta and Osmia rufa and effective measures of protection. Bulletin of Insectology, 58 (2): 141-152.
- Maeta, Y. & T. Kitamura, 1981. Pollinating efficiency of Osmia cornifrons Radoszkowski in relation to required number of nesting bees for economic fruit production. Honeybee Science, 2 (2): 65-72.
- Martins, K. T., A. Gonzalez & M. J. Lechowicz, 2015. Pollination services are mediated by bee functional diversity and landscape context. Agriculture, Ecosystems and Environment, 200: 12-20.
- Matsumoto, S. & T. Maejima, 2010. Several new aspects of the foraging behavior of Osmia cornifrons in an apple orchard. Psyche: A Journal of Entomology, 1-6.
- Müller, A., 2018. Palaearctic Osmiine bees, ETH Zürich. (Web page: http://blogs.ethz.ch/osmiini) (Date accessed: April 2019).
- Öckinger, E. & H. G. Smith, 2007. Semi-natural grasslands as population sources for pollinating insects in agricultural landscapes. Journal of Applied Ecology, 44 (1): 50-59.
- Özbek, H., 2008. Türkiye’de ılıman iklim meyve türlerini ziyaret eden böcek türleri. Uludağ Arıcılık Dergisi, 8 (3): 92-103.
- Özbek, H., 2013. Distribution of the tribe Osmiini bees (Hymenoptera: Megachilidae) of Turkey Part II: the genera Haetosmia, Osmia and Protosmia. Atatürk University, Journal of the Agricultural Faculty, 44 (2): 121-143.
- Raw, A., 1974. Pollen preferences of three Osmia species (Hymenoptera). Oikos, 25: 54-60.
Richards, K. W., 2020. Effectiveness of the alfalfa leafcutter bee Megachile rotundata Fab. to pollinate four perennial legumes. Journal of Apicultural Research, 59 (1): 1-8.
- Sampson, B. J., J. H. Cane, G. T. Kirker, S. J. Stringer & J. M. Spiers, 2009. Biology and management potential for three orchard bee species (Hymenoptera: Megachilidae): Osmia ribifloris Cockerell, O. lignaria (Say) and O. chalybea Smith, with emphasis on the former. Acta Horticulturae, 810: 549-555.
- Sekita, N., 2001. Managing Osmia cornifrons to pollinate apples in Aomori Prefecture, Japan. International Society of Horticultural Science, 561: 303-307.
- Spivak, M. & E. Mader, 2010. “The Business of Pollination, 1-14”. In: Managing Alternative Pollinators: A Handbook for Beekeepers, Growers, and Conservationists (Eds. E. Mader, M. Spivak & E. Evans). Natural Resource, Agriculture, and Engineering Service, 162 pp.
- Steckel, J., C. Westphal, M. K. Peters, M. Bellach, C. Rothenwoehrer, S. Erasmi, C. Scherber, T. Tscharntke & I. Steffan-Dewenter, 2014. Landscape composition and configuration differently affect trap-nesting bees, wasps and their antagonists. Biological Conservation, 172: 56-64.
- Steffan-Dewenter, I., 2003. Importance of habitat area and landscape context for species richness of bees and wasps in fragmented orchard meadows. Conservation Biology, 17: 1036-1044.
- Strohm, E., H. Daniels, C. Warmers & C. Stoll, 2002. Nest provisioning and a possible cost of reproduction in the megachilid bee Osmia rufa studied by a new observation method. Ethology Ecology and Evolution, 14: 255-268.
- Tepedino, V. J., 1997. A comparison of the alfalfa leafcutting bee (Megachile rotundata) and the honey bee (Apis mellifera) as pollinators for hybrid carrot seed in field cages. Acta Horticulturae, 437: 457-461.
- TÜİK, 2019. Bitkisel üretim istatistikleri. (Web page: http://www.tuik.gov.tr/jsp/duyuru/upload/vt/vt.htm) (Date accessed: May 2019).
- Vicens, N. & J. Bosch, 2000a. Nest site orientation and relocation of populations of the orchard pollinator Osmia cornuta (Hymenoptera: Megachilidae). Environmental Entomology, 29 (1): 69-75.
- Vicens, N. & J. Bosch, 2000b. Weather-dependent pollinator activity in an apple orchard, with special reference to Osmia cornuta and Apis mellifera (Hymenoptera: Megachilidae and Apidae). Environmental Entomology, 29 (3): 413-420.
- Vicens, N. & J. Bosch, 2000c. Pollinating efficacy of Osmia cornuta and Apis mellifera (Hymenoptera: Megachilidae, Apidae) on 'Red Delicious' apple. Environmental Entomology, 29 (2): 235-240.
Kırmızı duvarcı arısının Ankara ve Çankırı (Türkiye) illerinin meyve bahçelerindeki durumu
Year 2020,
Volume: 44 Issue: 2, 249 - 258, 01.06.2020
Yasemin Güler
Abstract
Özellikle sert çekirdekli meyvelerin önemli bir polinatörü olan Kırmızı duvarcı arısı, Osmia bicornis (L., 1758) (Hymenoptera: Megachilidae) ile ilgili araştırmalar, Türkiye’de son on yıl ile sınırlıdır. Afyonkarahisar’daki kiraz bahçelerinde ilk çalişmanın ardından 2014 ile 2016 yılları arasında Ankara ve Çankırı illerindeki karışık meyve bahçelerinde yürütülen bu çalışma, Kırmızı duvarcı arısının varlığını ve yoğunluğunu belirlemek ile yuvalanma biyolojisi hakkında veri elde etmeyi amaçlamıştır. Kırmızı duvarcı arısı, Malaise tuzak kullanılarak örneklenen hemen tüm bahçelerde belirlenmiş olmasına rağmen, yapay yuvalanma 2014 ve 2015 yıllarında sadece dört bahçede kaydedilmiştir. İç çapı 6-9 mm, uzunluğu 15-25 cm olan kamışlar yapay tuzak yuva olarak kullanılmışlardır. Yuvalanma başarısının %6 ile 48 arasında değiştiği belirlenmiştir. Yuvalardan elde edilen kokonlar diapozu başlatması için inkübatöre yerleştirilmiştir. Daha sonra inkübatörün sıcaklığı, erken ilkbaharda sert çekirdekli meyvelerin tomurcuk kabarması döneminin başlaması ile türün yaşam döngüsünü tamamlaması için kademeli olarak arttırılmıştır. Sonuç olarak, 2014 yılında toplanan 135 kokondan ergin çıkışı oranı %36 ile 95 olmuştur. 2015 yılına ait yuvaların diseksiyonundan elde edilen 143 kokonun hiç birinde ergin çıkışı kaydedilmemiştir. Eşey oranları hem tüm bahçeler arasında hem de aynı bahçenin 2014 ve 2105 yıllarında 1:1.5 ile 1:4 (♀:♂) arasında çeşitlilik göstermiştir. Sonuçlar, iklim, sınırlı polen ve nektar kaynakları ile insektisit uygulaması gibi stres koşullarına dayandırılarak tartışılmıştır.
Project Number
TAGEM-BS-12/01-06/01-28
References
- Aslan, C. E., C. T. Liang, B. Galindo, K. Hill & W. Topete, 2016. The role of honey bees as pollinators in natural areas. Natural Areas Journal, 36 (4): 478-488.
- Banaszak, J. & L. Romasenko, 1998. Megachilid Bees of Europe. Pedagogical University of Bydgoszcz, Poland, 239 pp.
- Benedek, P., 2008. Preliminary studies on propagating natural mason bee (mixed Osmia cornuta and O. rufa) populations in artificial media at the sites for fruit orchard pollination. International Journal of Horticultural Science, 14 (1-2): 95-101.
- Bertrand, C., P. W. Eckerter, L. Ammann, M. H. Entling, E. Gobet, F. Herzog, L. Mestre, W. Tinner & M. Albrecht, 2019. Seasonal shifts and complementary use of pollen sources by two bees, a lacewing and a ladybeetle species in European agricultural landscapes. Journal of Applied Ecology, 56: 2431-2442.
- Boesi, R., C. Polidori, J. Tormos, S. Bevacqua, J. D. Asis & F. Andrietti, 2005. Trap-nesting Ancistrocerus sikhimensis (Hymenoptera: Eumenidae) in Nepal: nest structure and associates (Hymenoptera: Chrysididae; Acarina: Saproglyphidae). Florida Entomologist, 88: 135-140.
- Bosch, J. & M. Blas, 1994. Foraging behavior and pollinating efficiency of Osmia cornuta and Apis mellifera on almond (Hymenoptera, Megachilidae and Apidae). Applied Entomology and Zoology, 29: 1-9.
- Bosch, J. & W. P. Kemp, 2004. Effect of pre-wintering and wintering temperature regimes on weight loss, survival, and emergence time in the mason bee Osmia cornuta (Hymenoptera: Megachilidae). Apidologie, 35 (5): 469-479.
- Budriene, A., E. Budrys & Z. Nevronyte, 2004. Solitary Hymenoptera Aculeata inhabiting trap-nests in Lithuania: nesting cavity choice and niche overlap. Latvijas Entomologs, 41: 19-31.
- Danks, H. V., 1971. Nest mortality factors in stem-nesting aculeate Hymenoptera. Journal of Animal Ecology, 40 (1): 79-82.
- Eeraerts, M., G. Smagghe & I. Meeus. 2019a. Pollinator diversity, floral resources and semi-natural habitat, instead of honey bees and intensive agriculture, enhance pollination service to sweet cherry. Agriculture, Ecosystems and Environment, 284: 106586.
- Eeraerts, M., R. Vanderhaegen, G. Smagghe & I. Meeus, 2019b. Pollination efficiency and foraging behaviour of honey bees and non-Apis bees to sweet cherry. Agricultural and Forest Entomology, 22 (1): 75-82.
- Garibaldi, L. A., I. Steffan-Dewenter, R. Winfree, M. A. Aizen, R. Bommarco, S. A. Cunningham & A. M. Klein, 2013. Wild pollinators enhance fruit set of crops regardless of honey bee abundance. Science, 339 (6127): 1608-1611.
- Güler, Y., 2012. Sultandağı havzası kiraz bahçelerindeki Osmia (Hymenoptera: Megachilidae) türleri üzerinde yürütülen yapay yuva çalışmaları. Bitki Koruma Bülteni, 52 (4): 325-336.
- Güler, Y. & F. Dikmen, 2013. Potential bee pollinators of sweet cherry in inclement weather conditions. Journal of the Entomological Research Society, 15 (3): 9-19.
- Güler, Y., F. Dikmen, D. Töre & A. M. Aytekin, 2014. Contributions on the current knowledge of the diversity of the Megachilidae (Apoidea: Hymenoptera) fauna in the Mediterranean Region of Turkey. Türkiye Entomoloji Dergisi, 38 (3): 255-278.
- Güler, Y. & A. Özkök, 2016. Encountered pollen in nests two Osmia species (Hym.: Megachilidae) from sweet cherry orchards in Sultandağı town (Afyonkarahisar, Turkey). Hacettepe Journal of Biolology and Chemistry, 44 (1): 15-19.
- Hansted, L., B. W. W. Grout, J. Eilenberg, I. B. Dencker & T. B Toldam-Andersen, 2012. The importance of bee pollination of the sour cherry (Prunus cerasus) cultivar ‘Stevnsbaer’ in Denmark. Journal of Pollination Ecology, 10 (6): 124-129.
- Hansted, L., B. W. W. Grout, T. B. Toldam-Andersen & J. Eilenberg, 2014. An assessment of Osmia rufa (syn. bicornis) as a pollinator of the sour cherry (Prunus cerasus) cv. Stevnsbaer in eastern Denmark. Journal of Apicultural Research, 53 (1): 177-182.
- Hung, K. L. J., J. M. Kingston, M. Albrecht, D. A. Holway & J. R. Kohn, 2018. The worldwide importance of honey bees as pollinators in natural habitats. Proceeding of the Royal Society B, 285: 1-8.
- Ivanov, S. P., 2006. The nesting of Osmia rufa (L.) (Hymenoptera, Megachilidae) in the Crimea: structure and composition of nests. Entomological Review, 86 (5): 524-533.
- Klein, A. M., C. Brittain, S. D. Hendrix, R. Thorp, N. Williams & C. Kremen, 2012. Wild pollination services to California almond rely on semi-natural habitat: Wild pollination services to California almond. Journal of Applied Ecology, 49: 723-732.
- Kremen, C., 2008. “Chapter 2: Crop Pollination Services from Wild Bees, 10-26”. In: Bee Pollination in Agricultural Ecosystems (Eds. R. J. Rosalind & T. L. Pitts-Singer). Oxford University Press, Inc. New York, 248 pp.
- Krunić, M. & L. Stanisavljević, 2006a. Augmentation of managed populations of Osmia cornuta and O. rufa (Hymenoptera: Megachilidae) in Southeastern Europe. European Journal of Entomology, 103 (3): 695-697.
- Krunić, M. & L. Stanisavljević, 2006b. The Biology of European Orchard Bee Osmia cornuta (Latr.) (Hymenoptera: Megachilidae). Izdavač Faculty of Biology University of Belgrade, 137 pp.
- Krunić, M., L. Stanisavljević, M. Pinzauti & A. Felicioli, 2005. The accompanying fauna of Osmia cornuta and Osmia rufa and effective measures of protection. Bulletin of Insectology, 58 (2): 141-152.
- Maeta, Y. & T. Kitamura, 1981. Pollinating efficiency of Osmia cornifrons Radoszkowski in relation to required number of nesting bees for economic fruit production. Honeybee Science, 2 (2): 65-72.
- Martins, K. T., A. Gonzalez & M. J. Lechowicz, 2015. Pollination services are mediated by bee functional diversity and landscape context. Agriculture, Ecosystems and Environment, 200: 12-20.
- Matsumoto, S. & T. Maejima, 2010. Several new aspects of the foraging behavior of Osmia cornifrons in an apple orchard. Psyche: A Journal of Entomology, 1-6.
- Müller, A., 2018. Palaearctic Osmiine bees, ETH Zürich. (Web page: http://blogs.ethz.ch/osmiini) (Date accessed: April 2019).
- Öckinger, E. & H. G. Smith, 2007. Semi-natural grasslands as population sources for pollinating insects in agricultural landscapes. Journal of Applied Ecology, 44 (1): 50-59.
- Özbek, H., 2008. Türkiye’de ılıman iklim meyve türlerini ziyaret eden böcek türleri. Uludağ Arıcılık Dergisi, 8 (3): 92-103.
- Özbek, H., 2013. Distribution of the tribe Osmiini bees (Hymenoptera: Megachilidae) of Turkey Part II: the genera Haetosmia, Osmia and Protosmia. Atatürk University, Journal of the Agricultural Faculty, 44 (2): 121-143.
- Raw, A., 1974. Pollen preferences of three Osmia species (Hymenoptera). Oikos, 25: 54-60.
Richards, K. W., 2020. Effectiveness of the alfalfa leafcutter bee Megachile rotundata Fab. to pollinate four perennial legumes. Journal of Apicultural Research, 59 (1): 1-8.
- Sampson, B. J., J. H. Cane, G. T. Kirker, S. J. Stringer & J. M. Spiers, 2009. Biology and management potential for three orchard bee species (Hymenoptera: Megachilidae): Osmia ribifloris Cockerell, O. lignaria (Say) and O. chalybea Smith, with emphasis on the former. Acta Horticulturae, 810: 549-555.
- Sekita, N., 2001. Managing Osmia cornifrons to pollinate apples in Aomori Prefecture, Japan. International Society of Horticultural Science, 561: 303-307.
- Spivak, M. & E. Mader, 2010. “The Business of Pollination, 1-14”. In: Managing Alternative Pollinators: A Handbook for Beekeepers, Growers, and Conservationists (Eds. E. Mader, M. Spivak & E. Evans). Natural Resource, Agriculture, and Engineering Service, 162 pp.
- Steckel, J., C. Westphal, M. K. Peters, M. Bellach, C. Rothenwoehrer, S. Erasmi, C. Scherber, T. Tscharntke & I. Steffan-Dewenter, 2014. Landscape composition and configuration differently affect trap-nesting bees, wasps and their antagonists. Biological Conservation, 172: 56-64.
- Steffan-Dewenter, I., 2003. Importance of habitat area and landscape context for species richness of bees and wasps in fragmented orchard meadows. Conservation Biology, 17: 1036-1044.
- Strohm, E., H. Daniels, C. Warmers & C. Stoll, 2002. Nest provisioning and a possible cost of reproduction in the megachilid bee Osmia rufa studied by a new observation method. Ethology Ecology and Evolution, 14: 255-268.
- Tepedino, V. J., 1997. A comparison of the alfalfa leafcutting bee (Megachile rotundata) and the honey bee (Apis mellifera) as pollinators for hybrid carrot seed in field cages. Acta Horticulturae, 437: 457-461.
- TÜİK, 2019. Bitkisel üretim istatistikleri. (Web page: http://www.tuik.gov.tr/jsp/duyuru/upload/vt/vt.htm) (Date accessed: May 2019).
- Vicens, N. & J. Bosch, 2000a. Nest site orientation and relocation of populations of the orchard pollinator Osmia cornuta (Hymenoptera: Megachilidae). Environmental Entomology, 29 (1): 69-75.
- Vicens, N. & J. Bosch, 2000b. Weather-dependent pollinator activity in an apple orchard, with special reference to Osmia cornuta and Apis mellifera (Hymenoptera: Megachilidae and Apidae). Environmental Entomology, 29 (3): 413-420.
- Vicens, N. & J. Bosch, 2000c. Pollinating efficacy of Osmia cornuta and Apis mellifera (Hymenoptera: Megachilidae, Apidae) on 'Red Delicious' apple. Environmental Entomology, 29 (2): 235-240.