post-copulatory
Rival male chemical cues evoke changes in male pre- and post-copulatory investment in a flour beetle
... Males can gather information on the risk and intensity of sperm competition from their social environment. Recent studies have impli- cated chemosensory cues, for instance cuticular hydrocarbons (CHCs) in insects, as a ...
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Molecular evidence of post-copulatory inbreeding avoidance in the field cricket Gryllus bimaculatus
... use post-copulatory inbreeding avoidance rather than simply avoid mating with relatives remains to be ...exercise post-copulatory mate choice, since male harassment may be ...
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Variation in pre and post copulatory sexual selection on male genital size in two species of lygaeid bug
... Lygaeus equestris L. and L. simulans Deckert are two closely related species of lygaeid bug (Heteroptera: Lygaeiodea; Lygaeinae). Both species are behaviourally and morphologi- cally very similar. Males and females mate ...
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Comparative morphological trade offs between pre and post copulatory sexual selection in Giant hissing cockroaches (Tribe: Gromphadorhini)
... G. oblongonota represents a competitive strategy with greater emphasis on weaponry. They are heavily armoured, and weapon development scales isometrically with body size while there is no relationship between testes mass ...
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Microsurgical manipulation reveals pre copulatory function of key genital sclerites
... of post-copulatory sexual selection, the parameres are extruded immediately prior to and during copulation but do not appear to serve any role in anchoring the male and female together during copulation ...
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Reproductive behaviour in the male cricket Gryllus bimaculatus DeGeer I Structure and function of the genitalia
... spermatophore material occurs even if pouch opening is hampered (the pouch cannot be opened in abdomen-opened males since the pouch is pressed onto the cork plate), and the post-copulatory rhythmic movement ...
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Experimental reduction of intromittent organ length reduces male reproductive success in a bug
... Male and female genitalia show extraordinary diversity across the animal king- dom, and there are numerous examples of highly divergent genital morphology among closely related species [1– 4]. It is now widely accepted ...
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Why do African elephants (Loxodonta africana) simulate oestrus? : An analysis of longitudinal data
... to be ovulating, but that coincide with the first occasions that young, nulliparous (never given birth) female relatives come into oestrus [15]. Mature females can be observed to approach and avoid males, run with their ...
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Alternative delivery of male accessory gland products
... The described findings now equip us with predictions about in which types of sperm transfer one can expect to find similar peculiar behaviours. For instance, animals with dissociated sperm transfer do not seem to ...
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Experimental reduction of intromittent organ length reduces male reproductive success in a bug
... Across all three manipulation experiments, the manipu- lation of processus length had no effect on the proportion of males seen mating, or male mating frequency. By remov- ing only the tip of the processus in experiment ...
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The nervous system of Isodiametra pulchra (Acoela) with a discussion on the neuroanatomy of the Xenacoelomorpha and its evolutionary implications
... Abbreviations: 1 dorsal neurite bundle; 2 lateral neurite bundle; 3 ventral neurite bundle; 4 medio-ventral neurite bundle; al anterior lobe; bn bursal nozzle; cop male copulatory organ;[r] ...
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... This paper seeks to explore aspects of both continuity and discontinuity in post-Fascist Italy with a specific focus on the Fascist legacy of social control in both policing and welfare. Thus, we are not concerned ...
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Nocturnal mating behaviour and dynamic male investment of copulatory time in the Southern Blue-Ringed Octopus, Hapalochlaena maculosa (Cephalopoda: Octopodidae)
... male copulatory-termination behaviour in particular was heavily dependent on both his own and the female’s recent mating history, it is possible that the shorter trials may have missed important patterns that ...
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Education from a post-post-foundationalist perspective and for post-post-foundationalist conditions
... the post-post-modern approaches of Olthuis (see previous section) and Turner cum suis reveals that whereas the latter aimed at discovering a radical centre of values in a secular (non-religious, ...
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Morphology of the nervous system of monogonont rotifer Epiphanes senta with a focus on sexual dimorphism between feeding females and dwarf males
... The post-hatching growth of rotifer females is achieved mostly through increase in the size of the cells but not their number [1, 73], thus the feeding females become larger while their neuroanat- omy, ...
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Post-Modern Usability
... It means the best usability people need to acquire knowledge from user experience areas that were neglected during the post-modern era, and the field itself needs to grow as a scienc[r] ...
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Freshwater planarians from artesian springs in Queensland, Australia (Platyhelminthes, Tricladida, Paludicola)
... With respect to other, non-Australian species of Dugesia, the following species share with D. artesi- ana the presence of both a small diaphragm and the absence of a duct between seminal vesicle and dia- phragm: D. ...
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... The overview of the design is presented in Figure 1. This study utilised a randomised controlled study design. Subjects reported to the laboratory on four occasions each separated by seven days, in order to examine the ...
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The design and development of a generic location based social media engine
... These newer frameworks implement dependency injection with a service hand- ler, meaning that the code is much more loosely coupled and any dependencies are automatically injected in from data in configuration files. If ...
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Exposure to post election violence and development of post traumatic stress disorder among children in eldoret sub county, Kenya
... of post traumatic symptoms among children in South Africa have yielded lower rates of risk for full-blown PTSD, such as 8% in a study of children in the Northern Province (Peltzer, 1999) and ...
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