scholarly journals Enriching early adult environment affects the copulation behaviour of a tephritid fly

2009 ◽  
Vol 212 (13) ◽  
pp. 2120-2127 ◽  
Author(s):  
F. Diaz-Fleischer ◽  
J. Arredondo ◽  
M. Aluja
Keyword(s):  
Copulation Behaviour

Diversity in cell specific co-expression of four neuropeptide genes involved in control of male copulation behaviour in Lymnaea stagnalis

Neuroscience ◽  
1997 ◽  
Vol 78 (1) ◽  
pp. 289-299 ◽  
Author(s):  
R.P.J de Lange ◽  
F.A van Golen ◽  
J van Minnen
Keyword(s):  
Lymnaea Stagnalis ◽  
Copulation Behaviour

scholarly journals Behavior of triatomines (Hemiptera: Reduviidae) vectors of Chagas' disease: I. Courtship and copulation of Panstrongylus megistus (Burm-1835) in the laboratory

1986 ◽  
Vol 81 (1) ◽  
pp. 1-5 ◽  
Author(s):  
Marli Maria Lima ◽  
Pedro Jurberg ◽  
Josimar Ribeiro de Almeida
Keyword(s):  
Chagas Disease ◽  
Direct Observation ◽  
Behavioral Patterns ◽  
Behavioral Differences ◽  
Panstrongylus Megistus ◽  
Duration Of Copulation ◽  
Copulation Behaviour ◽  
Male Genital

A study of the courship and copulation behaviour of Panstrongylus megistus was carried out in the laboratory. fifty-five newly-fed virgin couples were used. Experiments were performed during the day (9:00 to 12:00 a.m.) and at night (7:00 to 10:00 p.m). Behaviour was recorded by direct observation and was found to consist of the following sequence of behavioral patterns: the male approached the female and jumped on her or mounted her; he took on a dorsolateral position and immobilized the female dorsally and ventrally with his three pairs of legs; the male genital was placed below those of the female; the paramers of the male immobilized the female's genitals; copulation started. The couple joined by the iniciative of the male. The female could be receptive and accept copulation, or nonreceptive and reject the male. Copulation occurred more often on the occasion of the first attempt by the male. Duration of copulation was X = 29.3 ± 9.3 min (CV = 83%). No behavioral differences were observed couples tested during the day or at night.

The recently described parasitoid braconid wasp, Napo townsendi (Hymenoptera: Braconidae: Euphorinae: Dinocampini), forms leks and deters predators in the Ecuadorian cloud forest

2015 ◽  
Vol 35 (03) ◽  
pp. 103-116
Author(s):  
Willard S. Robinson ◽  
Delina E. Dority ◽  
Andy J. Kulikowski ◽  
Scott R. Shaw
Keyword(s):  
Sex Pheromone ◽  
Cloud Forest ◽  
Chemical Defence ◽  
Physical Fighting ◽  
Calling Behaviour ◽  
Salticid Spiders ◽  
Braconid Wasp ◽  
Agonistic Display ◽  
Copulation Behaviour ◽  
Napo Townsendi

In the Ecuadorian cloud forest, males of the parasitoid braconid waspNapo townsendiShaw displayed facultative lekking, appearing both singly and in groups of 2–7 on the leaf tops of various plant species. To attract females, they constantly employed a stereotypical, spread-winged calling behaviour, apparently releasing a sex pheromone combed from the lateral metasomal exocrine glands and applied to the wings and hind legs. Aggregated males used the same posture in conspecific agonistic displays, often leading to physical fighting. While female wasps were attracted to and mated with displaying singletons, they also made a choice among aggregated males. When females approached, males vibrated their wings in a brief courtship and mounted. Details of copulation behaviour, which lasted on an average of 3–4 min, are described. Without apparent physical weaponry, the displaying wasps successfully warded off attacks from an assortment of predatory arthropods, particularly salticid spiders. We present case studies of repeated unsuccessful predation attempts by salticids. Here, we postulate that calling and release of sex pheromone may double as both an intrasexual agonistic display and an aposematic advisory to predators that the wasps employ a chemical defence.

Intraspecific Variation in Courtship and Copulation Frequency: an Effect of Mismatch in Partner Attractiveness?

Behaviour ◽  
1993 ◽  
Vol 127 (3-4) ◽  
pp. 265-277 ◽  
Author(s):  
Marion Petrie ◽  
Fiona M. Hunter
Keyword(s):  
Theoretical Model ◽  
High Frequency ◽  
Mating Behaviour ◽  
Poor Quality ◽  
Pair Formation ◽  
The Poor ◽  
Monogamous Species ◽  
Socially Monogamous ◽  
Copulation Behaviour

AbstractThe aim of this paper is to present a verbal theoretical model that could account for the among pair variability in courtship and copulation behaviour that occurs both during and after pair formation in socially monogamous species. We assume that copulation acts to prevent mate loss, by reducing the availability of an individual to other potential partners. Variation in copulation and courtship frequency then arises as a result of variation in the risk of mate loss. Because of the constraints on free or ideal choice, pairs will form in which it may be possible for one individual to improve upon the quality of its partner. In a mismatched pair it will pay the poorer quality mate to guard the higher quality individual and prevent it from leaving to pair with a better quality mate. The poor quality individual will therefore solicit copulations at a high frequency while it's partner may not always respond. We predict that high levels of courtship and solicitation will relate to a high risk of mate loss and that a lack of response by a partner will relate to the potential opportunities it has to improve on partner quality. Our thesis is that variation in mating behaviour arises as a result of any deviations from assortative mating that may exist in a population.

Behavioural and Breeding-Habitat Related Aspects of Sperm Competition in Razorbills

Behaviour ◽  
1992 ◽  
Vol 123 (1-2) ◽  
pp. 1-26 ◽  
Author(s):  
Richard H. Wagner
Keyword(s):  
Sperm Competition ◽  
Breeding Site ◽  
Special Problem ◽  
Egg Laying ◽  
Breeding Habitat ◽  
Fertile Period ◽  
Colonial Species ◽  
Paternity Assurance ◽  
Nesting Sites ◽  
Copulation Behaviour

AbstractI observed razorbill copulation behaviour to examine the ability of males to assure their paternity in the presence of sperm competition. While males in colonial species are generally unable to guard their mates throughout the female's fertile period, male razorbills suffered a special problem in that females actively sought extra-pair copulations (EPCs) and did so in two separate locations, the colony and ledges outside the colony called "mating arenas". Most within-pair and extra-pair copulations were performed in the mating arenas (74% and 82%, respectively). Individuals were consistent in their attendance in one of the two arenas, depending upon the accessibility of the breeding site from the arena, and the attendance of other individuals from the same sub-colony. Individuals were also consistent in their occupation of specific sites within the arenas, and usually attended these sites between years. Attendance in the relatively small arenas brought individuals from the sparser colony into much closer proximity than when they attended their nesting sites. The higher density in the arenas was associated with females receiving EPC attempts three times more frequently upon arrival in the arenas than in the colony. Females resisted most EPC attempts, but a high proportion (50%) of females accepted at least one EPC prior to egg-laying. Mating arena attendance by males was aimed at obtaining EPCs when their mates were absent, and at attempting to assure their paternity when their mates were present. Paternity assurance was accomplished by a) inhibiting their mates from accepting EPCs, b) depriving other males access to the female, and c) copulating with the female frequently. Males did not guard their mates effectively in that they were absent from the mating arenas during a large proportion (34%) of their mates' arrivals. The principal male strategy for gaining paternity assurance was apparently to attempt frequent copulations with their mates. Males achieved cloacal contact (and presumably insemination) with their mates approximately 80 times during the 30 days preceding the laying of the single egg, and the number of days males attended the arenas was positively correlated with the number of

scholarly journals Distinct copulation positions in Drosophila pachea males with symmetric or asymmetric external genitalia

2012 ◽  
Vol 81 (2) ◽  
pp. 87-94 ◽  
Author(s):  
Michael Lang ◽  
Virginie Orgogozo
Keyword(s):  
External Genitalia ◽  
Left Lobe ◽  
Wild Type ◽  
Closely Related Species ◽  
Right Lobe ◽  
Drosophila Pachea ◽  
Female Bodies ◽  
The Right ◽  
Copulation Behaviour ◽  
Size Asymmetry

Left-right asymmetric genitalia have appeared multiple times independently in insects and have been associated with changes in mating positions. However, there is little experimental data on how the evolution of genital asymmetries may have affected the evolution of mating positions or vice versa. As opposed to its closely-related species, Drosophila pachea has a conspicuous asymmetry in its male genitalia external lobes, with the left lobe being 1.49 ± 0.08 (SD) times longer and thinner than the right lobe. In a laboratory stock, we found that 20% of the males possess fully symmetric lobes. To better understand how asymmetric genitalia may affect mating, we compared D. pachea copulation behaviour between these mutant males and wildtype males. We found that D. pachea wild-type males adopt a one-sided mating posture with the male always one-sided 8.55° ± 1.79° (SD) towards the female’s right side. Within 45-min recordings, all wild-type males did mate whereas 39% of symmetric mutants failed to form a stable mating complex and did not mate. In successful copulations, symmetric mutants also adopted a right-sided mating posture but the angle between male and female bodies was significantly more variable compared to wild-type males. Our results suggest that lobe size asymmetry is required for the formation of a stable mating complex and for the positioning of the male according to a precise angle on the female. However, lobe size asymmetry is not required for D. pachea right-sided mating posture.

Mate guarding and copulation behaviour in monogamous and polygynous blue tits: do males follow a best-of-a-bad-job strategy?

1995 ◽  
Vol 36 (1) ◽  
pp. 33-42 ◽  
Author(s):  
Bart Kempenaers ◽  
Geert R. Verheyen ◽  
Andr� A. Dhondt
Keyword(s):  
Mate Guarding ◽  
Copulation Behaviour ◽  
Blue Tits

Copulation behaviour in mammals: evidence that sperm competition is widespread

1989 ◽  
Vol 38 (2) ◽  
pp. 119-131 ◽  
Author(s):  
A. P. MØLLER ◽  
T. R. BIRKHEAD
Keyword(s):  
Sperm Competition ◽  
Copulation Behaviour

scholarly journals The genetic properties of homosexual copulation behaviour in Tribolium castaneum: artificial selection

1994 ◽  
Vol 26 (4) ◽  
pp. 361 ◽  
Author(s):  
L Castro ◽  
MA Toro ◽  
C López-Fanjul
Keyword(s):  
Tribolium Castaneum ◽  
Artificial Selection ◽  
Copulation Behaviour
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