First confirmed case of pseudocopulation in terrestrial orchids of South America: Pollination of Geoblasta pennicillata (Orchidaceae) by Campsomeris bistrimacula (Hymenoptera, Scoliidae)

Ciotek, Liliana; Giorgis, Pablo; Benitez‐Vieyra, Santiago; Cocucci, Andrea A.

doi:10.1016/j.flora.2005.07.012

Cited by 35 publications

(40 citation statements)

References 11 publications

(16 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Gavilea venosa, by contrast, exhibited a totally pollinator-dependent breeding system, which is in agreement with other orchids of the tribe Chloraeinae in southern South America (Clayton & Aizen 1996, Lehnebach & Riveros 2003, Ciotek et al 2006, Humaña et al 2008. Furthermore, G. venosa bears greater floral displays which may be interpreted as a consequence of pollinator-mediated selection.…”

Section: Discussionsupporting

confidence: 81%

See 1 more Smart Citation

Reproductive biology aspects of two species of the genus Gavilea (Orchidaceae, Chloraeinae) in populations from Central Chile

2010

View full text Add to dashboard Cite

The extent to which plants depend on pollinators for outcross pollen transportation is a key issue in plant reproductive ecology. We evaluated the putative breeding system, floral display, and natural pollination in two Southern Cone of South American orchids, Gavilea araucana and G. venosa, by performing four hand pollination trials (agamospermy, autogamy, geitonogamy, and xenogamy tests) and by counting each flower and fruit produced by plants in natural conditions. Fruit set differed significantly depending on the origin of pollen as well as on the presence of a pollen vector. None of these species produced fruits by the agamospermy tests, therefore indicating that they require the presence of pollen on the stigmas for fruit setting. By contrast, only G. araucana was capable of fruit setting following the autogamy test, therefore demostrating that this orchid needs not depend on pollinators for fruit set. Furthermore, G. araucana and G. venosa produced 100% fruits by geitonogamy and by xenogamy, thereby indicating that both plants are totally self-compatible. The mean number of flowers per plant was 2.1 times higher in G. venosa with respect to G. araucana; however, natural fruiting success was 28.8% and 98.9%, respectively. Furthermore, while the increase in fruiting success significantly and positively correlated with an increase in floral display in G. araucana, in G. venosa these variables were unrelated. Certainly, further studies concerning the reproductive strategies in orchids of southern South America are of great importance.Keywords: Autogamy, allogamy, self-compatibility, floral display, fruiting patterns. RESUMENEl alcance al cual las plantas dependen de polinizadores para el transporte de polen para los exocruzamientos es uno de los temas claves en ecología reproductiva de las plantas. Evaluamos el sistema reproductivo potencial, despliegue floral y polinización natural en dos orquídeas del Cono Sur de Sudamérica, Gavilea araucana y G. venosa, efectuando cuatro ensayos de polinización manual (agamospermia, autogamia, geitonogamia y xenogamia) y contando cada flor y fruto producidos por las plantas en condiciones naturales. La producción de frutos difirió significativamente dependiendo del origen del polen así como de la presencia de un vector polínico. Ninguna de las especies produjo frutos en las pruebas de agamospermia indicando, por lo tanto, que ellas requieren de la presencia de polen en los estigmas para producir frutos. Por el contrario, solamente G. araucana fue capaz de producir frutos siguiendo la prueba de autogamia demostrando, por ende, que esta orquídea no necesita depender de polinizadores para producir frutos. Además, G. araucana y G. venosa produjeron un 100% de frutos por geitonogamia y xenogamia, indicando esto, que ambas plantas son autocompatibles. El número promedio de flores por planta fue 2,1 veces mayor en G. venosa con respecto a G. araucana; sin embargo, el éxito en la fructificación natural fue de 28,8% y 98,9%, respectivamente. Además, mientras el incremento e...

show abstract

Section: Discussionsupporting

confidence: 81%

“…Despite some recent researches (Clayton & Aizen 1996, Lehnebach & Riveros 2003, Ciotek et al 2006, Humaña et al 2008, there is still much more to be done.…”

Section: Discussionmentioning

confidence: 99%

Reproductive biology aspects of two species of the genus Gavilea (Orchidaceae, Chloraeinae) in populations from Central Chile

2010

View full text Add to dashboard Cite

show abstract

“…To date, sexual deceit is thought to be exclusive to the family Orchidaceae, where it has evolved independently on multiple occasions and on different continents, with representatives found across Australia (ten genera : Coleman 1928 ;Stoutamire 1975 ;Peakall et al 1987 ;Jones 1988 ;Peakall 1990 ;Bower 1996) , Central and South America (seven genera: Van der Pijl and Dodson 1966 ;Dod 1976 ;Singer 2002 ;Singer et al 2004 ;Blanco and Barbosa 2005;Ciotek et al 2006) , South Africa (genus Disa ; Steiner et al 1994) , and the West Palaearctic (Delforge 2005 ;Schiestl 2005 ;Ayasse 2006 ;Jeraskova et al 2006) . Pollination by sexual deception is thought to be a derived pollination strategy within the family Orchidaceae ( Van der Pij and Dodson 1966 ;Van der Cingel 1995 ;Alcock 2005) .…”

Section: Transitions To Parasitism By Sexual Deception In Orchidsmentioning

confidence: 99%

Deceptive Behavior in Plants. I. Pollination by Sexual Deception in Orchids: A Host–Parasite Perspective

Vereecken

2009

Plant-Environment Interactions

View full text Add to dashboard Cite

Sexually deceptive orchids attract male insects as pollinators by mimicking the reproductive signals emitted by the targeted females. Since this mimicry system involves the imitation of female mating signals of certain insects, and since mating signals, especially sex pheromones, generally act on a species-specific basis, theory holds that each sexually deceptive orchid is usually pollinated by only one or a few male insect species. While these orchids rely exclusively on their specialized pollinators for their own reproduction, the male insects derive no benefit from this interaction. In this chapter, I will argue that incorporating questions relevant to the field of animal-centered host-parasite interactions into investigations on the evolutionary ecology of orchid pollination by deception will provide important insights at both the proximate (or mechanistic) and at the ultimate (or evolutionary) levels.

show abstract

“…Perbedaan mencolok antara keduanya adalah keberadaan bulu lebat pada Campsomeris (Michener 2000). Keberadaan bulu pada Campsomeris menyebabkan serangga ini dapat berperan dalam proses penyerbukan terutama pada tumbuhan dari kelompok anggrek (Ciotek et al 2006), macadamia (Vithanage & Ironside 1986) 11-13 (sedang) 07:00-10:00 8,50 ± 0,79 C (Lebah sedang) Amegilla zonata 11-13 (sedang) 07:00-09:00 4,02 ± 0,31 Trigona (Tetragonula) laeviceps 4-4,6 (kecil) 09:00-15:00 27,23 ± 3,02 D (Lebah kecil) Tabel 3. Klasifikasi guild spesies pengunjung kabocha berdasarkan parameter ukuran tubuh, periode kunjungan, dan handling time dan polen pada bunga sebagai sumber energi dan protein selain dari pemangsaan, aktivitas yang berkontribusi pada proses penyerbukan pada kelompok tumbuhan yang terbatas (Reddy & Reddi 1994).…”

Section: Pembahasanunclassified

Pola kunjungan serangga liar dan efek penambahan koloni Trigona (Tetragonula) laeviceps Smith pada penyerbukan kabocha (Cucurbita maxima)

et al. 2017

View full text Add to dashboard Cite

ABSTRAKSerangga penyerbuk liar maupun terdomestikasi memainkan peran penting dalam proses penyerbukan pada berbagai tanaman bernilai ekonomi terutama tanaman monoceious seperti dari kelompok Cucurbitaceae. Tujuan dari penelitian ini adalah mendapatkan informasi mengenai peran dari serangga penyerbuk liar dan aplikasi koloni Trigona (Tetragonula) laeviceps Smith terhadap produksi dan kualitas buah kabocha (Cucurbita maxima) sebagai model tanaman pada lahan pertanian tradisional. Pengamatan dilakukan pada pukul 07:00-15:00 selama periode pebungaan dalam kurun waktu tiga minggu. Pengamatan dilakukan pada tiga plot perlakuan: open pollination + T. laeviceps (OPT), open pollination (OP), dan hand pollination (HP). Efek dari polinator ditinjau melalui tiga parameter, yaitu pola kunjungan, plant reproductive success, dan kualitas buah. Pola kunjungan diukur berdasarkan frekuensi dan lama kunjungan serangga, plant reproductive success diukur dari fruit set dan jumlah biji, sedangkan kualitas buah diukur berdasarkan diameter dan berat buah serta produksi buah/tanaman. Hasil penelitian menunjukkan mayoritas polinator liar aktif pada pagi hari, sedangkan T. laeviceps lebih aktif mulai siang yang diduga disebabkan oleh pengaruh variasi toleransi terhadap suhu pada tiap spesies. Terdapat perbedaan signifikan pada fruit set antara perlakuan OPT (80%), OP (65%), dan HP (38,3%) (F 2,35 = 19,907, P = 0,000). Jumlah biji dan kualitas buah yang dihasilkan pada perlakuan OPT dan OP lebih tinggi dibandingkan dengan perlakuan HP, sedangkan jumlah buah pada OPT jauh lebih tinggi dibandingkan dengan lainnya. Rendahnya kesuksesan penyerbukan pada plot HP menunjukkan ketepatan waktu penting bagi penyerbukan kabocha. Berdasarkan hasil ini maka penyerbukan oleh lebah pada tanaman kabocha sulit digantikan oleh manusia dan variasi kunjungan yang dimiliki oleh T. laeviceps berdampak positif pada produksi buah kabocha.Kata kunci: kesuksesan reproduksi, produksi buah, serangga penyerbuk, tanaman produksi ABSTRACTInsects hold important role in pollination of many crops. However, studies on pollination in Indonesia could be considered rare. This study focussed on obtaining the basic information of wild pollinators and the effect Trigona (Tetragonula) laeviceps Smith innundation release to the

show abstract

First confirmed case of pseudocopulation in terrestrial orchids of South America: Pollination of Geoblasta pennicillata (Orchidaceae) by Campsomeris bistrimacula (Hymenoptera, Scoliidae)

Cited by 35 publications

References 11 publications

Reproductive biology aspects of two species of the genus Gavilea (Orchidaceae, Chloraeinae) in populations from Central Chile

Reproductive biology aspects of two species of the genus Gavilea (Orchidaceae, Chloraeinae) in populations from Central Chile

Deceptive Behavior in Plants. I. Pollination by Sexual Deception in Orchids: A Host–Parasite Perspective

Pola kunjungan serangga liar dan efek penambahan koloni Trigona (Tetragonula) laeviceps Smith pada penyerbukan kabocha (Cucurbita maxima)

Contact Info

Product

Resources

About