On the role of direct sunlight for egg‐laying behaviour: lessons and ideas from the speckled wood

2021 ◽  
Author(s):  
Simon Braem ◽  
Hans Van Dyck
Keyword(s):  
Egg Laying ◽  
Direct Sunlight ◽  
Egg Laying Behaviour

Analyse Experimentale Du Role De L'Ovitube Dans Le Comportement De Ponte De La Bruche Du Haricot (Acanthoscelides Obtectus Say- Coleoptera, Bruchidae)

Behaviour ◽  
1975 ◽  
Vol 54 (3-4) ◽  
pp. 258-277 ◽  
Author(s):  
Jean Pouzat
Keyword(s):  
Mechanical Stimulus ◽  
Egg Laying ◽  
Acanthoscelides Obtectus ◽  
The One ◽  
The Relationship ◽  
Acanthoscelides Obtectus Say ◽  
Egg Laying Behaviour ◽  
Made In ◽  
Important Stimulus

AbstractA resume is made of the major sequences of egg-laying behaviour, both in nature and on stored seeds, of the bean weevil. An experimental analysis of the role of the ovipositor in the act of egg-laying is then undertaken by simple techniques. It is observed that an important stimulus, with respect to this, is mechanical in nature: resulting from contact between the setae of the ovipositor on the one hand, and the seed and the "ground" on the other. Simply suspending the seed instead of leaving it lie on the cage bottom, suffices to reduce egg-laying and production significantly. Examination of egg-laying, when the substratum furnished is a trellis with suitable sized mesh, shows that an important aspect of the mechanical stimulus is in its concentrical character, i.e., the fact that it is applied to a greater number of setae all around the ovipositor. The result enables us to understand better the behaviour in nature, where there is a boring of the bean pod followed by egg-laying inside that pod through through the hole made. In the course of the paper some connected problems are evoked: - The relationship between egg-laying and production; - The more or less necessary character of the succession of the different sequences in egg-laying behaviour. Existence of intermediary cases, between individuals which can lay eggs only in the pod and those laying in the apparent absence of any stimulus, particularly stimuli connected with the bean; - Links between the phytophage and its host, remarks on the apparently unfavourable peculiarity of laying a great number of eggs in the same place, the possible consequences with respect to population dynamics.

scholarly journals Role of egg-laying behavior, virulence and local adaptation in a parasitoid’s chances of reproducing in a new host

2020 ◽  
Vol 120 ◽  
pp. 103987
Author(s):  
R. Benoist ◽  
S. Paquet ◽  
F. Decourcelle ◽  
J. Guez ◽  
R. Jeannette ◽  
...  
Keyword(s):  
Local Adaptation ◽  
Egg Laying ◽  
New Host

THE ROLE OF NUTRITION AND TEMPERATURE IN THE OVARIAN DEVELOPMENT OF THE WORKER HONEY BEE (APIS MELLIFERA)

1998 ◽  
Vol 130 (6) ◽  
pp. 883-891 ◽  
Author(s):  
Huarong Lin ◽  
Mark L. Winston
Keyword(s):  
Apis Mellifera ◽  
Honey Bee ◽  
Nutritive Value ◽  
Royal Jelly ◽  
Ovarian Development ◽  
Egg Laying ◽  
Brood Chamber ◽  
Laying Workers

AbstractQueenless, caged, newly emerged worker bees (Apis mellifera L.) were fed honey, 22 and 40% pollen in honey, and 22 and 40% royal jelly in honey for 14 days. Workers fed royal jelly, pollen, and honey had large, medium, and small ovaries, respectively. Royal jelly had higher nutritive value for workers’ ovarian development than did pollen, possibly because royal jelly is predigested by nurse bees and easily used by adult and larval bees. These results suggest that nurse bees could mediate workers’ ovarian development in colonies via trophallactic exchange of royal jelly. Six levels of royal jelly in honey, 0, 20, 40, 60, 80, and 100% (royal jelly without honey), were tested for their effects on workers’ ovarian development and mortality for 10 days. High levels of royal jelly increased ovarian development, but also increased worker mortality. All caged bees treated with 100% royal jelly died within 3 days. When workers were incubated at 20, 27, and 34 °C for 10 days, only bees at 34 °C developed ovaries. These findings suggest that nurse bees functioning as units which digest pollen and produce royal jelly may feed some potentially egg-laying workers in a brood chamber with royal jelly when a queen is lost in a colony. Feeding workers a diet of 50% royal jelly in honey and incubating at 34 °C for 10 days is recommended for tests of ovarian development.

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