Limb disparity and wing shape in pterosaurs
نویسندگان
چکیده
منابع مشابه
Constraints on the wing morphology of pterosaurs.
Animals that fly must be able to do so over a huge range of aerodynamic conditions, determined by weather, wind speed and the nature of their environment. No single parameter can be used to determine-let alone measure-optimum flight performance as it relates to wing shape. Reconstructing the wings of the extinct pterosaurs has therefore proved especially problematic: these Mesozoic flying repti...
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پروانه‌ی کرم گلوگاه انار، Ectomyelois ceratoniae (Zeller) ، به خانواده‌ی Pyralidae و زیر خانواده‌ی Phycitinae تعلق دارد. علیرغم وجود شواهدی دال بر وجود اختلاف شکل و اندازه در جنس‌های نر و ماده‌ی بسیاری از پروانه‌ها و همچنین در اعضای این خانواده، وجود چنین اختلافی تاکنون در گونه‌ی مورد بحث گزارش نشده است. در تحقیق حاضر، دوشکلی جنسی در اندازه و شکل بال پروانه‌ی کرم گلوگاه انار روی چهار میزبان انا...
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There is an increasing amount of archaeological and linguistic evidence that pterosaurs (flying reptiles) were mentioned by several authors of Scripture. This introductory article will deal with some of those biblical words and what I've learned about them from word studies and archaeology. The scientific basis for this study has been established by articles for peer-reviewed scientific publica...
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The eyes of stalk-eyed flies (Diopsidae) are positioned at the end of rigid peduncles (‘stalks’) protruding laterally from the head. Eye-stalk length varies within the family and, in some species, varies between males and females. Larger eye-stalks in males result from sexual selection for longer stalks, a trait that increases male reproductive success. In the present study, we examined whether...
متن کاملSexual conflict in wing size and shape in Drosophila melanogaster.
Intralocus sexual conflict occurs when opposing selection pressures operate on loci expressed in both sexes, constraining the evolution of sexual dimorphism and displacing one or both sexes from their optimum. We eliminated intralocus conflict in Drosophila melanogaster by limiting transmission of all major chromosomes to males, thereby allowing them to win the intersexual tug-of-war. Here, we ...
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ژورنال
عنوان ژورنال: Journal of Evolutionary Biology
سال: 2006
ISSN: 1010-061X,1420-9101
DOI: 10.1111/j.1420-9101.2006.01096.x