scholarly journals Mating Behaviour of the Braconid Wasp, Apanteles glomeratus L. (Hymenoptera : Braconidae) : Mating Sequence and the Factor for Correct Orientation of Male to Female

1982 ◽  
Vol 17 (1) ◽  
pp. 32-39 ◽  
Author(s):  
Jun TAGAWA ◽  
Toshitaka HIDAKA
Keyword(s):  
Mating Behaviour ◽  
Correct Orientation ◽  
Apanteles Glomeratus ◽  
Braconid Wasp ◽  
Mating Sequence ◽  
Male To Female

scholarly journals Influence of Age on the Mating Behaviour of the Braconid Wasp, Apanteles glomeratus L.

1985 ◽  
Vol 20 (2) ◽  
pp. 227-230 ◽  
Author(s):  
Jun TAGAWA ◽  
Shuichi ASANO ◽  
Takeshi OHTSUBO ◽  
Minoru KAMOMAE ◽  
Tetsuya GOTOH
Keyword(s):  
Mating Behaviour ◽  
Apanteles Glomeratus ◽  
Braconid Wasp

Courtship and copulation in the terrestrial snail Helix aspersa

1988 ◽  
Vol 66 (6) ◽  
pp. 1446-1453 ◽  
Author(s):  
Shelley A. Adamo ◽  
Ronald Chase
Keyword(s):  
Mating Behaviour ◽  
Helix Pomatia ◽  
Helix Aspersa ◽  
Terrestrial Snail ◽  
Mating Sequence ◽  
Snail Helix Aspersa

Mating behaviour in Helix aspersa has three major components: introductory behaviour, dart shooting, and copulation. Introductory behaviour, which includes reciprocal tactile and oral contacts, lasts an average of 33.7 ± 23.3 (SD) min. Dart shooting, the pushing of a calcareous dart into the mating partner's body, occurs once for each snail per mating sequence. Snails that hit their partners during the first dart-shooting event copulated 14.5 ± 8.7 min after dart shooting, whereas snails that missed their partners took 40.5 ± 37.5 min to copulate. Dart shooting may facilitate mating by increasing behavioural synchrony. Copulation is reciprocal and has a duration of 421.8 ± 56.6 min. Spermatophores are transferred approximately 300 min after simultaneous intromission. There are significant differences in the mating behaviours of Helix aspersa and Helix pomatia.

Reproduction and development of the spider Nephila edulis (Koch) (Araneidae : Araneae)

1978 ◽  
Vol 26 (3) ◽  
pp. 501 ◽  
Author(s):  
AD Austin ◽  
DT Anderson
Keyword(s):  
Development Time ◽  
Mating Behaviour ◽  
Large Female ◽  
Egg Mass ◽  
Sexually Dimorphic ◽  
Germ Band ◽  
The Third ◽  
Mating Sequence ◽  
The Web ◽  
Extremes Of Temperature

The sexually dimorphic Nephila edulis breeds during the autumn (February-May), the large female producing one egg-sac per season, containing an average of 383 eggs. The web of immature females sometimes incorporates a stabilamentum. Mating behaviour can result in the death of the male and is different from the ritualized mating behaviour of N. maculata. The male of N. edulis always begins its mating sequence after a female has caught prey. N. edulis in the study site fed predominantly on leafhoppers, dealing with its prey by a stereotyped attack sequence. The egg-mass of N. edulis is laid in a complex egg-sac of yellow silk. Each 1.14-mm diameter egg is coated with minute, regular particles which may have water-resistant properties. The prehatching development time is long; 29 days at 20�C and 42-87 days in the field. The external embryonic stages are similar to those of other araneomorph spiders. Pigmentation, developed in embryos of N. edulis after the germ band stage, is believed to be associated with the breakdown of yolk. The external changes during the first three posthatching instars are described. The emergence from the egg-sac at the third instar is correlated with the depletion of yolk reserves at this stage. The function of the egg-sac of N. edulis is not related to protection from extremes of temperature or humidity. The function is discussed in relation to protection of the eggs from predators and parasites.

Sexual behaviour and reproductive performance of ewe lambs at and after puberty

1978 ◽  
Vol 90 (1) ◽  
pp. 83-91 ◽  
Author(s):  
T. N. Edey ◽  
R. Kilgour ◽  
Kaye Bremner
Keyword(s):  
Mating System ◽  
Success Rate ◽  
Reproductive Performance ◽  
Sexual Behaviour ◽  
Mating Behaviour ◽  
Late Pregnancy ◽  
Weak Response ◽  
Behavioural Responses ◽  
Ewe Lambs ◽  
Mating Sequence

SUMMARYObservations were made on mating behaviour and reproductive performance during the puberal period in 61 well-grown Perendale (Cheviot × Romney) ewe lambs. In four animals, the first oestrus (as indicated by raddle marks) was not accompanied by ovulation, and three other lambs, though marked by the rams, were not inseminated.The behavioural responses to a ram, of ewe lambs experiencing oestrus for the first and second times, showed many signs of inadequacy by comparison with those of mature ewes. Individual ewe lambs and mature ewes in oestrus were exposed to a ram in a pen for 3 h, and their responses were ranked on a scale of 1 (full adult response) to 5 (weak response). Of mature ewes 95% scored 1, compared with only 27% of ewe lambs. Across the lambs 59% scored 3 or more, indicating failure of some aspects of the courtship sequences which are required to sustain and reinforce the ram's interest. In a paddock-mating system many lambs showed a strong tendency to disassociate themselves from the rams after each courtship and mating sequence. Consequently there was little evidence of harem formation. Fifty-six per cent of services came in the first 2 h of oestrus, only 14% after the 6th hour and none after the 11th hour.Duration of the first oestrus in lambs was 18·4 h compared with 29·3 h in mature ewes. Mating the 61 ewe lambs over the first three cycles after puberty resulted in 38 of them being pregnant with 46 foetuses at autopsy in mid to late pregnancy. The success rate did not differ between cycles.

scholarly journals Observations on mating in Mediterranean Sepiola and Sepietta species and review of mating behaviour in Sepiolinae (Cephalopoda: Sepiolidae)

2021 ◽  
Vol 140 (1) ◽  
Author(s):  
Giambattista Bello ◽  
Adrianne Deickert
Keyword(s):  
Mediterranean Sea ◽  
Mating Behaviour ◽  
Mantle Cavity ◽  
Western Mediterranean ◽  
The Other ◽  
Bursa Copulatrix ◽  
Western Mediterranean Sea ◽  
Skin Coloration ◽  
Male Skin ◽  
Male To Female

AbstractMating was observed and described in captive individuals of Sepiola affinis, Sepiola intermedia and Sepietta obscura (Cephalopoda: Sepiolidae) collected in the Catalan Sea, western Mediterranean Sea. This is the first report of a mating event in S. intermedia; it is also the first detailed description of the mating behaviour for the other two species. The published literature on mating in Sepiolinae, which includes both cursory reports and in-depth descriptions of mating events, was thoroughly reviewed. In all, copulation has been examined in eight species belonging to four different genera, namely, Eumandya, Euprymna, Sepietta and Sepiola, starting from 1894 to the present. Common traits of the mating behaviour were detected among the studied sepioline species, so that a general five stages succession of actions is established to portray the mating progress in Sepiolinae: (A) female hovers by, male attention (it is discussed whether actual copulation is preceded by any courtship); (B) male approaches female from below; (C) male grasps female at the neck by its third arms, inserts its first arms in the female’s mantle cavity (the hectocotylised left arm is thus aligned with the bursa copulatrix), holds the female’s mantle by its second arms and positions itself and mate in the “parallel position”; (D) copulation and transfer of spermatophores from male to female (this stage may last from 3 min to 3 h); (E) mating dissolution. Mating occurs preferentially during the dark hours; it is described as violent and the female tries to escape the forceful grasp by the male; the male skin coloration turns darker. The similarity of the mating behaviour in all examined sepioline species is an evidence of both its evolution in harmony with their copulatory organs (hectocotylus and bursa copulatrix) and, seemingly, its common derivation to the whole Sepiolinae clade.

scholarly journals Courtship and mating behaviour of the Mediterranean corn borer, Sesamia nonagrioides (Lepidoptera: Noctuidae)

2003 ◽  
Vol 1 (1) ◽  
pp. 43 ◽  
Author(s):  
C. López ◽  
M. Eizaguirre ◽  
R. Albajes
Keyword(s):  
Population Control ◽  
Mating Behaviour ◽  
Field Tests ◽  
Sesamia Nonagrioides ◽  
Corn Borer ◽  
Mating Rate ◽  
Calling Behaviour ◽  
North Eastern ◽  
Pheromone Composition ◽  
Mating Sequence

The behavioural sequence of courtship and mating of Sesamia nonagrioides Lefèbvre males and females in laboratorycages is described. The attractant capacity of both sexes was studied by tethering males or females. The courtshipand mating sequence of tethered females was the same as untethered ones, but tethered males were absolutely inactive.Age (1 day versus 2 days) did not affect the mating rate. Differences in calling time onset and first calling agewere found between north-eastern Spanish and Greek populations. The role of hair pencils in courtship flight is discussed,rejecting that they stimulate calling behaviour of females or that they attract females. The influence of adultpopulation density was studied in laboratory and field tests, and was found to have no effect on the mating rate in thecontrols. However, moth density influenced mating rates where mating disruption treatments were applied. Several consequences for investigations into pheromone composition and its use in monitoring and population control are reported in the discussion.

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