scholarly journals Mating behaviour of Aphidius ervi (Hymenoptera: Braconidae): The role of antennae

2002 ◽  
Vol 99 (4) ◽  
pp. 451-456 ◽  
Author(s):  
Donatella BATTAGLIA ◽  
Nunzio ISIDORO ◽  
Roberto ROMANI ◽  
Ferdinando BIN ◽  
Francesco PENNACHIO
Keyword(s):  
Mating Behaviour ◽  
Aphidius Ervi

Why Mate Choices are not as Reciprocal as we Assume: The Role of Personality, Flirting and Physical Attractiveness

2011 ◽  
Vol 25 (2) ◽  
pp. 120-132 ◽  
Author(s):  
Mitja D. Back ◽  
Lars Penke ◽  
Stefan C. Schmukle ◽  
Karoline Sachse ◽  
Peter Borkenau ◽  
...  
Keyword(s):  
Sex Differences ◽  
Social Relations ◽  
Physical Attractiveness ◽  
Mating Behaviour ◽  
Community Sample ◽  
Real Life ◽  
Mate Value ◽  
Speed Dating ◽  
Interesting Pattern

Based on a social relations perspective on mating, the actual and assumed reciprocity of mate choices was studied in a real–life speed–dating context. A community sample involving 382 singles aged 18–54 years filled out a questionnaire for the measurement of self–perceived mate value, sociosexuality, extraversion, and shyness and participated in free speed–dating sessions. Immediately after each date, choices and assumed choices were recorded. Measures of physical attractiveness and flirting behaviour were obtained by independent observers. Results show that actual mate choices are not reciprocal although people strongly expect their choices to be reciprocated and flirting behaviour is indeed strongly reciprocal. This interesting pattern of results was explained by investigating individual and dyadic effects of flirting, self–perceived mate value and physical attractiveness on mate choices. Results have important implications for understanding mating behaviour, sex differences and the (in)accuracies of mating decisions. Copyright © 2010 John Wiley & Sons, Ltd.

Folloicular dominance and oocyte maturation

Zygote ◽  
1996 ◽  
Vol 4 (04) ◽  
pp. 327-334 ◽  
Author(s):  
B.K. Campbell ◽  
A.S. McNeilly
Keyword(s):  
Exact Sequence ◽  
Oocyte Maturation ◽  
Developmental Process ◽  
Mating Behaviour ◽  
Follicle Growth ◽  
Ovulatory Follicle ◽  
Development Failure ◽  
Further Development ◽  
Essential Prerequisite

The ovulatory follicle has the dual role of releasing a viable oocyte capable of fertilisation and the production of key endocrine signals that result in mating behaviour, the induction of the preovulatory LH surge and ovulation. Further, following ovulation the ovulatory follicle must be capable of forming a viable corpus luteum if pregnancy is to be maintained. Follicle growth is therefore a developmental process during which the follicle progressively acquires a number of properties, each of which is an essential prerequisite for further development. Failure to acquire these properties at the correct time and in an exact sequence will lead to failure of the developmental process and to the deterioration of the follicle through atresia and degeneration of the oocyte.

scholarly journals Nerves innervating copulatory organs show common FMRFamide, FVRIamide, MIP and serotonin immunoreactivity patterns across Dinophilidae (Annelida) indicating their conserved role in copulatory behaviour

2018 ◽  
Author(s):  
Alexandra Kerbl ◽  
Emilie Winther Tolstrup ◽  
Katrine Worsaae
Keyword(s):  
Mating Behaviour ◽  
Copulatory Organ ◽  
Reproductive Organs ◽  
Seminal Vesicles ◽  
Male Mating ◽  
Individual Traits ◽  
Serotonin Immunoreactivity ◽  
Dwarf Males ◽  
Copulatory Behaviour

Background: Males of the microscopic annelid family Dinophilidae use their prominent glandomuscular copulatory organ (penis) to enzymatically dissolve the female's epidermis and thereafter inject sperm. In order to test for putative conserved copulatory structures and neural orchestration across three dinophilid species, we reconstructed the reproductive myo- and neuroanatomy and mapped neurotransmitter immunoreactivity patterns of two specific markers with reported roles in invertebrate male mating behaviour (FVRIamide, MIP) and three general neural markers (acetylated α-tubulin, serotonin, FMRFamide). Results: Seminal vesicles (one or two pairs), surrounded by a thin layer of longitudinal and circular muscles and innervated by nerve fibres, are found between testes and copulatory organ in the larger males of Dinophilus vorticoides and Trilobodrilus axi, but are missing in the only 0.05 mm long D. gyrociliatus dwarf males. The midventral copulatory organ is in all species composed of an outer muscular penis sheath and an inner penis cone. Nerves encircle the organ equatorially, either as a ring-shaped circumpenial fibre mass or as dorsal and ventral commissures, which are connected to the ventrolateral nerve cords. All three examined dinophilids show similar serotonin-, FMRFamide-, and FVRIamide-like immunoreactivity patterns in the nerves surrounding the penis, supporting the general involvement of these neurotransmitters in copulatory behaviour in meiofaunal annelids. MIP-like immunoreactivity is restricted to the circumpenial fibre mass in D. gyrociliatus and commissures around the penis in T. axi (but not found in D. vorticoides), indicating its role in controlling the copulatory organ. Conclusions: The overall myo- and neuroanatomy of the reproductive organs is rather similar in the three studied species, suggesting a common ancestry of the unpaired glandomuscular copulatory organ and its innervation in Dinophilidae. This is furthermore supported by the similar immunoreactivity patterns of the tested neurotransmitters around the penis. Smaller differences in the immunoreactivity patterns around the seminal vesicles and spermioducts might account for additional, individual traits. We thus show morphological support for the putatively conserved role of FMRFamide, FVRIamide, MIP and serotonin in dinophilid copulatory behaviour.

scholarly journals When mothers make sons sexy: maternal effects contribute to the increased sexual attractiveness of extra-pair offspring

2011 ◽  
Vol 279 (1731) ◽  
pp. 1233-1240 ◽  
Author(s):  
Barbara Tschirren ◽  
Erik Postma ◽  
Alison N. Rutstein ◽  
Simon C. Griffith
Keyword(s):  
Sexual Selection ◽  
Maternal Effects ◽  
Genetic Basis ◽  
Mating Behaviour ◽  
Maternal Investment ◽  
Genetic Benefits ◽  
The Social ◽  
Pair Mating ◽  
Extra Pair Mating

Quality differences between offspring sired by the social and by an extra-pair partner are usually assumed to have a genetic basis, reflecting genetic benefits of female extra-pair mate choice. In the zebra finch ( Taeniopygia guttata ), we identified a colour ornament that is under sexual selection and appears to have a heritable basis. Hence, by engaging in extra-pair copulations with highly ornamented males, females could, in theory, obtain genes for increased offspring attractiveness. Indeed, sons sired by extra-pair partners had larger ornaments, seemingly supporting the genetic benefit hypothesis. Yet, when comparing ornament size of the social and extra-pair partners, there was no difference. Hence, the observed differences most likely had an environmental basis, mediated, for example, via differential maternal investment of resources into the eggs fertilized by extra-pair and social partners. Such maternal effects may (at least partly) be mediated by egg size, which we found to be associated with mean ornament expression in sons. Our results are consistent with the idea that maternal effects can shape sexual selection by altering the genotype–phenotype relationship for ornamentation. They also caution against automatically attributing greater offspring attractiveness or viability to an extra-pair mate's superior genetic quality, as without controlling for differential maternal investment we may significantly overestimate the role of genetic benefits in the evolution of extra-pair mating behaviour.

Secretory material from antennal organs and its possible role in mating behaviour of Pipunculidae (Diptera)

2006 ◽  
Vol 84 (12) ◽  
pp. 1727-1732 ◽  
Author(s):  
A. Belcari ◽  
M. Kozánek
Keyword(s):  
Physiological Function ◽  
Mating Behaviour ◽  
Antennal Segment ◽  
Courtship Behaviour ◽  
Secretory Material ◽  
The Third ◽  
The Family ◽  
Secretory System

The study of antennal morphology of entomoparasitic flies belonging to the family Pipunculidae (Diptera) revealed the presence of a developed secretory system area on the third antennal segment (flagellum) of pipunculid males. The possible physiological function of this system is discussed. Socketed mechanotactile bristles, two types of basiconical sensilla, one type of grooved sensilla, and a sensory pit form the sensillar system of pipunculid antennae. The morphology of these sensilla and the pattern of their distribution are presented. The discovery of a secretory system in male antennae reveals the possible complex role of antennae in courtship behaviour of pipunculid flies.

Host regulation by the aphid parasitoid Aphidius ervi: the role of teratocytes

2000 ◽  
Vol 97 (1) ◽  
pp. 1-9 ◽  
Author(s):  
Patrizia Falabella ◽  
Ermenegildo Tremblay ◽  
Francesco Pennacchio
Keyword(s):  
Aphidius Ervi ◽  
Aphid Parasitoid ◽  
Host Regulation
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