Can chemical signals, responsible for mutualistic partner encounter, promote the specific exploitation of nursery pollination mutualisms? - The case of figs and fig wasps

2009 ◽  
Vol 131 (1) ◽  
pp. 46-57 ◽  
Author(s):  
Magali Proffit ◽  
Chun Chen ◽  
Catherine Soler ◽  
Jean-Marie Bessière ◽  
Bertrand Schatz ◽  
...  
Keyword(s):  
Chemical Signals ◽  
Fig Wasps ◽  
Nursery Pollination

A Mechanism for Reversibly Pausing a Self-Immolation Cascade in Response to pH Changes

2019 ◽  
Author(s):  
Derrick Roberts ◽  
Ben S. Pilgrim ◽  
Tristan Dell ◽  
Molly Stevens
Keyword(s):  
Local Environment ◽  
Chemical Signals ◽  
Ph Sensitive ◽  
First Report ◽  
Ph Changes ◽  
Self Immolation

We describe the first report of a self-immolation cascade that can be reversibly paused and reactivated in response to pH changes. This system employs a triazole-based self-immolative linker, which expresses a pH-sensitive intermediate during its elimination sequence. This allows the system to respond to pH cues within its local environment, thus establishing a new way to gate self-immolative release using fluctuating or transient chemical signals.<br>

Identifying cryptic species in pollinating-fig wasps by PCR-RFLP on mtDNACOIgene

2010 ◽  
Vol 18 (4) ◽  
pp. 414
Author(s):  
Long Yiyi ◽  
Yang Liyuan ◽  
Liao Wanjin
Keyword(s):  
Cryptic Species ◽  
Fig Wasps ◽  
Pcr Rflp

A Novel Method for the Analysis of Volatile Organic Compounds (VOCs) from Red Flour Beetle Tribolium castaneum (H.) using Headspace-SPME Technology

2020 ◽  
Vol 16 (4) ◽  
pp. 404-412 ◽  
Author(s):  
Ihab Alnajim ◽  
Manjree Agarwal ◽  
Tao Liu ◽  
YongLin Ren
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Tribolium Castaneum ◽  
Solid Phase ◽  
Chemical Signals ◽  
Red Flour Beetle ◽  
Specific Chemical ◽  
Flour Beetle ◽  
Volatile Organic ◽  
Spme Fibre

Background: The red flour beetle, Tribolium castaneum (Herbst) (Coleoptera: Tenebrionidae) is one of the world’s most serious stored grain insect pests. A method of early and rapid identification of red flour beetle in stored products is urgently required to improve control options. Specific chemical signals identified as Volatile Organic Compounds (VOCs) that are released by the beetle can serve as biomarkers. Methods: The Headspace Solid Phase Microextraction (HS-SPME) technique and the analytical conditions with GC and GCMS were optimised and validated for the determination of VOCs released from T. castaneum. Results: The 50/30 μm DVB/CAR/PDMS SPME fibre was selected for extraction of VOCs from T. castaneum. The efficiency of extraction of VOCs was significantly affected by the extraction time, temperature, insect density and type of SPME fibre. Twenty-three VOCs were extracted from insects in 4 mL flask at 35 ± 1°C for four hours of extraction and separated and identified with gas chromatography-mass spectroscopy. The major VOCs or chemical signals from T. castaneum were 1-pentadecene, p-Benzoquinone, 2-methyl- and p-Benzoquinone, 2-ethyl. Conclusion: This study showed that HS-SPME GC technology is a robust and cost-effective method for extraction and identification of the unique VOCs produced by T. castaneum. Therefore, this technology could lead to a new approach in the timely detection of T. castaneum and its subsequent treatment.

scholarly journals Deilagaon, a New Genus of Indo-Malayan and Papuan Fig Wasps (Hymenoptera, Chalcidoidea, Agaonidae)

1977 ◽  
Vol 46 (2) ◽  
pp. 291-298 ◽  
Author(s):  
J.T. Wiebes
Keyword(s):  
New Species ◽  
Type Species ◽  
New Genus ◽  
New Guinea ◽  
The Philippines ◽  
Type Locality ◽  
Fig Wasps ◽  
Bismarck Archipelago

Introduction of the new genus Deilagaon with descriptions of new species chrysolepidis (type-species) from the Philippines (type-locality Luzon, ex Ficus chrysolepis Miq.), Celebes, New Guinea (ex F. novoguineensis Corner), Bismarck Archipelago, Solomon Isis.; and annulatae from Thailand, Malaya (ex F.depressa Bl.), Sumatra, Borneo (type-locality N. Borneo, ex F. annulata Bl.), Philippines. Included is also Ceratosolen megarhopalus Grandi (1923) from Thailand, Malaya, Sumatra, Java, Borneo, Philippines (Balabac Isl.).

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