scholarly journals Semiochemicals in Host and Mate Finding Behavior of Macrocentrus grandii Goidanich (Hymenoptera: Braconidae)

1996 ◽  
Vol 79 (2) ◽  
pp. 104 ◽  
Author(s):  
Richard L. Jones
Keyword(s):  
Mate Finding ◽  
Macrocentrus Grandii

Lower Cretaceous origin of long-distance mate finding behaviour in Hymenoptera (Insecta)

2013 ◽  
Vol 11 (1) ◽  
pp. 83-89 ◽  
Author(s):  
Lars Krogmann ◽  
Michael S. Engel ◽  
Günter Bechly ◽  
André Nel
Keyword(s):  
Lower Cretaceous ◽  
Long Distance ◽  
Mate Finding

Nocturnal observations on the emergence and flight behaviour of Helicoverpa armigera (Lepidoptera: Noctuidae) in the post-rainy season in central India

1992 ◽  
Vol 82 (2) ◽  
pp. 243-256 ◽  
Author(s):  
J.R. Riley ◽  
N.J. Armes ◽  
D.R. Reynolds ◽  
A.D. Smith
Keyword(s):  
Helicoverpa Armigera ◽  
Central India ◽  
Pigeon Pea ◽  
Mate Finding ◽  
Flight Behaviour ◽  
Infra Red ◽  
Helicoverpa Armígera ◽  
Migratory Strategies ◽  
Lepidoptera Noctuidae ◽  
Oviposition Sites

AbstractA range of techniques was used to quantify the nocturnal flight behaviour of Helicoverpa armigera (Hübner) in pigeon pea (Cajanus cajan) crops near Hyderabad, in central India. These included visual observations in the field, the use of field cages and a vehicle-mounted net, optical and video imaging in the infra-red, and radar. Moth emergence from the soil was observed to start at dusk and recruitment continued steadily throughout the first half of the night. Little activity was observed in moths on the night of emergence, except for weak flying or crawling to daytime refuges. Flight activity of one-day old moths started about 20 min after sunset, peaked 15 min later and within about an hour of sunset had declined to a low level which persisted for the rest of the night. Flight of reproductively mature moths was most frequent about 1 h after sunset and at this time mainly comprised females searching for oviposition sites and nectar sources. By about 2 h after sunset, flight had decreased markedly, but there was a slight increase in activity in the second half of the night caused by males undertaking mate-finding flights. Under the conditions studied, the majority of H. armigera dispersed below 10 m, and there were no mass ascents to higher altitudes like those observed at outbreak sites of the African armyworm, Spodoptera exempta (Walker) (Lepidoptera: Noctuidae). The contrasting migratory strategies of H. armigera and S. exempta are briefly discussed.

scholarly journals Cell–cell signalling in sexual chemotaxis: a basis for gametic differentiation, mating types and sexes

2015 ◽  
Vol 12 (109) ◽  
pp. 20150342 ◽  
Author(s):  
Zena Hadjivasiliou ◽  
Yoh Iwasa ◽  
Andrew Pomiankowski
Keyword(s):  
Cell Signalling ◽  
Cell Movement ◽  
Decisive Role ◽  
Chemical Diffusion ◽  
Mating Types ◽  
Mate Finding ◽  
Sexual Signalling ◽  
Morphological Differences ◽  
Parameter Values ◽  
Self Stimulation

While sex requires two parents, there is no obvious need for them to be differentiated into distinct mating types or sexes. Yet this is the predominate state of nature. Here, we argue that mating types could play a decisive role because they prevent the apparent inevitability of self-stimulation during sexual signalling. We rigorously assess this hypothesis by developing a model for signaller–detector dynamics based on chemical diffusion, chemotaxis and cell movement. Our model examines the conditions under which chemotaxis improves partner finding. Varying parameter values within ranges typical of protists and their environments, we show that simultaneous secretion and detection of a single chemoattractant can cause a multifold movement impediment and severely hinder mate finding. Mutually exclusive roles result in faster pair formation, even when cells conferring the same roles cannot pair up. This arrangement also allows the separate mating types to optimize their signalling or detecting roles, which is effectively impossible for cells that are both secretors and detectors. Our findings suggest that asymmetric roles in sexual chemotaxis (and possibly other forms of sexual signalling) are crucial, even without morphological differences, and may underlie the evolution of gametic differentiation among both mating types and sexes.

Synergy in information use for mate finding: demonstration in a parasitoid wasp

2010 ◽  
Vol 79 (6) ◽  
pp. 1307-1315 ◽  
Author(s):  
Marie Metzger ◽  
Deborah Fischbein ◽  
Alexandra Auguste ◽  
Xavier Fauvergue ◽  
Carlos Bernstein ◽  
...  
Keyword(s):  
Information Use ◽  
Parasitoid Wasp ◽  
Mate Finding

scholarly journals Mate finding via a trail sex pheromone by a parasitoid wasp.

1995 ◽  
Vol 92 (3) ◽  
pp. 900-904 ◽  
Author(s):  
X. Fauvergue ◽  
K. R. Hopper ◽  
M. F. Antolin
Keyword(s):  
Sex Pheromone ◽  
Parasitoid Wasp ◽  
Mate Finding

Mate Finding in the Parasitic Wasp Cephalonomia tarsalis (Ashmead): More than one way to a Female’s Heart

2009 ◽  
Vol 35 (7) ◽  
pp. 761-768 ◽  
Author(s):  
Jana Collatz ◽  
Till Tolasch ◽  
Johannes L. M. Steidle
Keyword(s):  
Parasitic Wasp ◽  
Mate Finding

5-Hydroxy-tryptamine modulates pheromone-evoked local field potentials in the macroglomerular complex of the sphinx moth Manduca sexta

2000 ◽  
Vol 203 (11) ◽  
pp. 1701-1709 ◽  
Author(s):  
P. Kloppenburg ◽  
T. Heinbockel
Keyword(s):  
Manduca Sexta ◽  
Local Field ◽  
Local Field Potentials ◽  
Projection Neurons ◽  
Sexually Dimorphic ◽  
Intracellular Recordings ◽  
Field Potentials ◽  
Mate Finding ◽  
Afferent Information ◽  
Intact Brain

Extra- and intracellular recordings from an intact brain preparation were used to study the effects of 5-hydroxytryptamine (5-HT or serotonin) on projection neurons in the sexually dimorphic macroglomerular complex (MGC) in the antennal lobe of the male moth Manduca sexta. The MGC is a group of three identified glomeruli specialized for synaptic processing of primary afferent information about the multi-component sex pheromone of the female. We investigated the modulatory effects of 5-HT on pheromone-evoked local field potentials in the MGC. The magnitude and duration of these potentials, which are thought to be generated by a population of pheromone-sensitive projection neurons of the MGC, were increased by 5-HT. Using intracellular recordings from the neurites of individual MGC projection neurons, we found that 5-HT increased the number of action potentials in response to pheromonal stimulation. These findings correlate well with earlier experiments that used other recording techniques. Our results are further evidence that 5-HT modulates a population of pheromone-sensitive MGC projection neurons that relay information about the pheromonal stimulus from the MGC to higher-order centers in the protocerebrum and are therefore pivotal for mate-finding and odor-guided behavior.

Navigation in an odorant-landscape: mate finding and mate choice in a nocturnal moth

2021 ◽  
Author(s):  
Yiftach Golov ◽  
Alexander Liberzon ◽  
Roi Gurka ◽  
Victoria Soroker ◽  
Russell Jurenka ◽  
...  
Keyword(s):  
Mate Choice ◽  
Mate Finding
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