V.—A new crab of the genus Sesarma from Basra
نویسندگان
چکیده
منابع مشابه
Observations on Egg Hatching in the Estuarine Crab Sesarma haematocheir
A female of the terrestrial crab Sesarma haematoeheir incubates 30,000-50,000 eggs on her abdomen. After 1 month of embryonic development, zoeae larvae are released into estuarine waters within 3-5 sec by means ofvigorous fanning motions of the abdomen. Hatching (breakage of the outer egg membrane) occurs on land just before larval release. The release behavior itself does not cause rupture of ...
متن کاملThe early life history of Sesarma fossarum, an endemic freshwater crab from Jamaica
The freshwater crab Sesarma fossarum (Decapoda, Brachyura, Sesarmidae) was only recently described as a new species. As in most other endemic Jamaican crabs that have radiated in limnic and terrestrial environments, its early life history has been largely unknown. In an experimental laboratory study this species was reared through embryonic, larval, and early juvenile development, and ontogenet...
متن کاملthe effect of traffic density on the accident externality from driving the case study of tehran
در این پژوهش به بررسی اثر افزایش ترافیک بر روی تعداد تصادفات پرداخته شده است. به این منظور 30 تقاطع در شهر تهران بطور تصادفی انتخاب گردید و تعداد تصادفات ماهیانه در این تقاطعات در طول سالهای 89-90 از سازمان کنترل ترافیک شهر تهران استخراج گردید و با استفاده از مدل داده های تابلویی و نرم افزار eviews مدل خطی و درجه دوم تخمین زده شد و در نهایت این نتیجه حاصل شد که تقاطعات پر ترافیک تر تعداد تصادفا...
15 صفحه اولMetamorphosis in a semiterrestrial crab, Sesarma curacaoense: intra- and interspecific settlement cues from adult odors
The larvae of many marine invertebrate species are able to delay their settlement and metamorphosis in the absence of characteristic cues from the adult habitat. This phenomenon was experimentally studied in the megalopa stage of Sesarma curacaoense de Man, 1892, a semiterrestrial grapsid crab that lives in the shallow coastal mangrove habitats in the Caribbean region. Duration of the developme...
متن کاملParamoguai kavieng, a new genus and species of camptandriid crab from Papua New Guinea (Crustacea: Brachyura).
Paramoguai kavieng is recognised as a new genus and species of camptandriid crab, recently discovered in Papua New Guinea. The new genus closely resembles Moguai Tan & Ng, 1999, from the western Pacific, sharing similar carapace and pereopod structure, but is distinguished chiefly by the fusion of the maxilliped 3 ischiomerus, features of the epistome and front, and position of the anterolatera...
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ژورنال
عنوان ژورنال: Annals and Magazine of Natural History
سال: 1920
ISSN: 0374-5481
DOI: 10.1080/00222932008632342