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First paired observations of sexual behavior and calls in wild leopard seals
Little is known about the reproductive biology of the leopard seal ( Hydrurga leptonyx ), a Southern Ocean predator. Here we observed sexual behavior...
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Impacts of astaxanthin-enriched Paracoccus carotinifaciens on growth, immune responses, and reproduction performance of broodstock Nile tilapia during winter season
The growth, immune response, and reproductive performance of broodstock of Nile tilapia ( Oreochromis niloticus ) under winter stress conditions were...
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Mosaic Evolution of Gras** and Genital Traits in Two Sympatric Scorpion Species with Reproductive Interference
Components of the same structure or characters of the same individual might respond differently to natural and sexual selective pressures, showing...
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My studies of primates: Sex, affinity, and competition
In this essay, I summarize my research career, with reference to the early days of the Laboratory of Physical Anthropology (LPA) at Kyoto University...
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Ultrasonic vocalizations in house mice depend upon genetic relatedness of mating partners and correlate with subsequent reproductive success
BackgroundCourtship vocalizations are used by males of many species to attract and influence the behavior of potential mating partners. Our aim here...
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Characterization of the reproductive behaviour of the roan antelope (Hippotragus equinus)
Little information exists on the sexual behaviours of the roan antelope ( Hippotragus equinus ; É. Geoffroy Saint-Hilaire, 1803), a species listed...
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Immature mating as a tactic of polygynous male western widow spiders
In polygynous species, males typically mate with more than one female, and male investment in any one mating should decrease if securing that mating...
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Reproductive Tactics in Baleen Whales
While a variety of reproductive tactics are readily witnessed in odontocetes, such behaviors can be far more elusive in baleen whales and in some...
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A pheromone bouquet controls the reproductive behaviour of the male shore crab, Carcinus maenas
The reproduction of many brachyuran crustaceans involves the formation of mating pairs often around the time of the female moult with attraction of a...
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Autonomous selfing is altered by pollination in delayed-selfing species Gentianopsis paludosa (Gentianaceae)
Delayed selfing, promoted by reduction in herkogamy has been widely reported as a reproductive assurance mechanism. However, the effect of...
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How does access to water at different life-stages affect male investment in reproduction and survival?
Holometabolous insects have four distinct life-stages – eggs, larvae, pupae and adults. Active resource acquisition generally occurs during either or...
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Male body size does not affect the refractory period of females in the West Indian sweet potato weevil Euscepes postfasciatus (Fairmaire) (Coleoptera: Curculionidae) and the seed bug Togo hemipterus (Scott) (Heteroptera: Lygaeidae)
Multiple mating by females increases both the risk and intensity of sperm competition for males. The ability to temporarily or permanently inhibit...
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Intrauterine botulinum toxin A administration promotes endometrial regeneration mediated by IGFBP3-dependent OPN proteolytic cleavage in thin endometrium
Adequate endometrial growth is a critical factor for successful embryo implantation and pregnancy maintenance. We previously reported the efficacy of...
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Sexual Behavior of the Sugarcane Hairy Borer, Hyponeuma taltula (Lepidoptera: Erebidae): Evidence for a Female-Released Sex Pheromone
The sugarcane hairy borer, Hyponeuma taltula (Schaus, 1904), attacks the base of sugarcane and causes the death of the apical bud, a symptom known as...
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Permanent floral closure enhances the reproductive efficiency in Merremia umbellata subsp. orientalis (Hallier f.) Ooststr. (Convolvulaceae)
Although the causes and consequences of floral closure have been studied widely, the ecological advantages of floral closure and its role in plant...
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Love bites: male frogs (Plectrohyla, Hylidae) use teeth scratching to deliver sodefrin precursor-like factors to females during amplexus
BackgroundEfficient transfer of chemical signals is important for successful mating in many animal species. Multiple evolutionary lineages of animals...
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The fertilization process in Lithocarpus dealbatus (Fagaceae) and its implication on the sexual reproduction evolution of Fagales
Main conclusionThe pistillate flowers of Lithocarpus dealbatus show two pollen tube (PT) arresting sites (the style-joining and micropyle) within...
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Identification of quantitative trait loci and associated candidate genes for pregnancy success in Angus–Brahman crossbred heifers
BackgroundIn beef cattle, more than 50% of the energy input to produce a unit of beef is consumed by the female that produced the calf. Development...
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Cuticular hydrocarbon profiles of Aedes aegypti reproductive stages - a potential tool for identifying high epidemiological risk populations
The objective of this work was to determine the cuticular hydrocarbon variation in female and male Aedes aegypti at each of their reproductive...
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Dancing to a different tune: changing reproductive seasonality in an introduced chital deer population
Male and female reproductive behaviour is typically synchronised. In species such as those in the family Cervidae , reproductive timing is often cued...
