Search Results - "Vahed, Karim"

The life cycle of the Atlantic Beach-Cricket, Pseudomogoplistes vicentae Gorochov, 1996 by Vahed, Karim

“…The Atlantic Beach-Cricket, Pseudomogoplistes vicentae , inhabits shingle beaches, with a range that extends from the UK to the Canary Islands. Little is known…”
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Larger ejaculate volumes are associated with a lower degree of polyandry across bushcricket taxa by Vahed, Karim

“…In numerous insects, including bushcrickets (Tettigoniidae), males are known to transfer substances in the ejaculate that inhibit the receptivity of females to…”
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Habitat requirements of the endangered heath bush-cricket Gampsocleis glabra (Orthoptera, Tettigoniidae) in an isolated population by Grzędzicka, Emilia, Vahed, Karim

“…Steppes and xerothermic grasslands are hotspots of biodiversity, but are threatened by habitat destruction and fragmentation. The heath bush-cricket,…”
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The function of nuptial feeding in insects: a review of empirical studies by VAHED, KARIM

“…Nuptial feeding encompasses any form of nutrient transfer from the male to the female during or directly after courtship and/or copulation. In insects, nuptial…”
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Evolution of Large Testes: Sperm Competition or Male Mating Rate? by Vahed, Karim, Parker, Darren J

“…A positive relationship across species between the extent to which females mate with more than one male and relative testes mass has been demonstrated in a…”
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Emerging issues in the evolution of animal nuptial gifts by Lewis, Sara M., Vahed, Karim, Koene, Joris M., Engqvist, Leif, Bussière, Luc F., Perry, Jennifer C., Gwynne, Darryl, Lehmann, Gerlind U. C.

“…Uniquely positioned at the intersection of sexual selection, nutritional ecology and life-history theory, nuptial gifts are widespread and diverse. Despite…”
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The function of nuptial feeding in insects: a review of empirical studies by VAHED, KARIM

“…ABSTRACT Nuptial feeding encompasses any form of nutrient transfer from the male to the female during or directly after courtship and/or copulation. In…”
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FUNCTIONAL EQUIVALENCE OF GRASPING CERCI AND NUPTIAL FOOD GIFTS IN PROMOTING EJACULATE TRANSFER IN KATYDIDS by Vahed, Karim, Gilbert, James D. J., Weissman, David B., Barrientos-Lozano, Ludivina

“…The function of nuptial gifts has generated longstanding debate. Nuptial gifts consumed during ejaculate transfer may allow males to transfer more ejaculate…”
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Free amino acids as phagostimulants in cricket nuptial gifts: support for the ‘Candymaker’ hypothesis by Warwick, Stuart, Vahed, Karim, Raubenheimer, David, Simpson, Stephen J

“…(Orthoptera: Gryllidae) using high performance liquid chromatography (HPLC). The spermatophylax (dry weight) consisted of approximately 7 per cent free amino…”
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Coercive Copulation in the Alpine Bushcricket Anonconotus alpinus Yersin (Tettigoniidae: Tettigoniinae: Platycleidini) by Vahed, Karim

“…Sexual coercion in the form of forced copulation is widespread in the animal kingdom and has been documented in several insect taxa. In crickets and…”
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intensity of pre- and post-copulatory mate guarding in relation to spermatophore transfer in the cricket Gryllus bimaculatus by Parker, Darren J, Vahed, Karim

“…While post-copulatory mate guarding has been well documented in field crickets (Orthoptera: Gryllidae), the occurrence of pre-copulatory mate guarding in this…”
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All that Glisters is not Gold: Sensory Bias, Sexual Conflict and Nuptial Feeding in Insects and Spiders by Vahed, Karim

“…It is becoming increasingly clear that the evolutionary interests of the sexes are often in conflict when it comes to mating. Sexual encounters involving…”
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Structure of spermatodoses in shield-back bushcrickets (Tettigoniidae, Tettigoniinae) by Vahed, Karim

“…Many aspects of the reproductive anatomy and physiology of tettigoniids have been studied extensively. These include the large, externally visible…”
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Comparative evidence for a cost to males of manipulating females in bushcrickets by Vahed, Karim

“…Recent theoretical and empirical research on sexual conflict has tended to focus on the costs to females of being manipulated by males. The costs to males…”
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Differences across Taxa in Nuptial Gift Size Correlate with Differences in Sperm Number and Ejaculate Volume in Bushcrickets (Orthoptera: Tettigoniidae) by Vahed, Karim, Gilbert, F. S.

“…The spermatophores of bushcrickets consist of two parts: an ampulla which contains the sperm and a spermatophylax which the female eats following mating. There…”
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Paternity analysis of wild‐caught females shows that sperm package size and placement influence fertilization success in the bushcricket Pholidoptera griseoaptera by Parker, Darren James, Zaborowska, Julia, Ritchie, Michael Gordon, Vahed, Karim

“…In species where females store sperm, males may try to influence paternity by the strategic placement of sperm within the female's sperm storage organ. Sperm…”
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Paternity analysis of wild‐caught females shows that sperm package size and placement influence fertilization success in the bushcricket P holidoptera griseoaptera by Parker, Darren James, Zaborowska, Julia, Ritchie, Michael Gordon, Vahed, Karim

“…Abstract In species where females store sperm, males may try to influence paternity by the strategic placement of sperm within the female's sperm storage…”
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Male genital titillators and the intensity of post-copulatory sexual selection across bushcrickets by Lehmann, Gerlind U.C, Gilbert, James DJ, Vahed, Karim, Lehmann, Arne W

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The Olive Ridley Project (ORP): A successful example of how to engage researchers, conservation practitioners and civil society by Stelfox, Martin, Martin-Cereceda, Mercedes, Vahed, Karim, Hudgins, Jillian, Köhnk, Stephanie, Iqbal, Usman, Shameel, Ibrahim, Hancock, Joana M., Sweet, Michael

“…The Olive Ridley Project (ORP) was set up to protect sea turtles and their habitats. The project was formed in 2013, and it became a registered charity in the…”
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CURRENT ISSUES - PERSPECTIVES AND REVIEWS: All that Glisters is not Gold: Sensory Bias, Sexual Conflict and Nuptial Feeding in Insects and Spiders by Vahed, Karim

“…It is becoming increasingly clear that the evolutionary interests of the sexes are often in conflict when it comes to mating. Sexual encounters involving…”
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