Ovarian dynamics in relation to host quality in the Walnut-infesting Fly, Rhagoletis juglandis
نویسندگان
چکیده
منابع مشابه
Ovarian dynamics in relation to host quality in the Walnut-infesting Fly, Rhagoletis juglandis
1. Reproductive behaviour is routinely studied with a view towards characterizing how an animal responds to variation in resource abundance and quality. This characterization is less commonly made with respect to reproductive physiology. 2. In the Walnut-infesting Fly, Rhagoletis juglandis , ovarian development is cued by the presence of the host fruit resource. In this study, I examined how ov...
متن کاملPOPULATION ECOLOGY Host Utilization by the Walnut Fly, Rhagoletis juglandis (Diptera: Tephritidae)
Rhagoletis juglandis Cresson is a specialist that deposits its eggs into the husks of developing walnut fruit. Like other walnut infesting ßies in the R. suavis group, R. juglandis actively superparasitizes its larval hosts. However, little is known regarding the degree to which hosts are reused and the ecological context under which host reuse occurs. This Þeld study examined the pattern of ho...
متن کاملResource presence and operational sex ratio as determinants of copulation duration in the fly Rhagoletis juglandis.
The effects of the interaction between the operational sex ratio (OSR) and a resource (i.e. oviposition site) on mating dynamics have rarely been considered. We examined the effect of the resource presence and its interaction, with the effect of OSR on copulation duration in Rhagoletis juglandis, a tephritid fly species characterized by a resource-defence mating system in which males defend ter...
متن کاملinvestigating cda tendency and critical thinking abilities of iranian translation students in relation to their translation quality
امروزه مسئله ی اساسی در رویکرد های جدید زبانشناسی، ابعاد اجتماعی و ایدئولوژیک زبان تلقی می شود. گروه های مختلف اجتماعی، سیاسی و یا مذهبی از زبان به عنوان ابزاری برای دستیابی به اهداف درون گروهی خود استفاده می کنند (ون دایک، 2003). آنها معولا ایدئولوژی خود را صریحا ابراز نمی کنند بلکه آن را در غالب کلمات و ساختارهای زبانی پنهان نگه می دارند. تشخیص ایدئولوژی های پنهان در گفتمان نیازمند این موضوع ...
Walnut Blight: Genetic Variation in English Walnut in Response to Inoculation with Xanthomonas Campestris Pv. Juglandis
This was the second year of a study which evaluated the genetic variation among English walnut germplasm in response to infection by Xanthomonas campestris pv. juqlandis (Xcj), the bacterium which causes the disease walnut blight. Immature leaves and nuts of 10 walnut accessions representing the breadth of currently available germplasm were inoculated. Leaves were scored for disease severity at...
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ژورنال
عنوان ژورنال: Functional Ecology
سال: 2005
ISSN: 0269-8463,1365-2435
DOI: 10.1111/j.1365-2435.2005.00993.x