Identification of local populations of freshwater crab Geothelphusa dehaani (White).
نویسندگان
چکیده
منابع مشابه
Sexual Disruption in the Freshwater Crab (Geothelphusa dehaani).
To clarify the effect of environmental endocrine disruptors on the induction of secondary sexual characteristics in wild animals, we observed 1,527 male and 1,847 female specimens of sexually mature Japanese freshwater crabs, Geothelphusa dehaani, collected at 12 sample points from 10 rivers in Sasebo City, Nagasaki Prefecture, Japan. The results obtained were as follows: Abnormal males, with e...
متن کاملDetection of Paragonimus metacercariae in the Japanese freshwater crab, Geothelphusa dehaani, bought at retail fish markets in Japan.
Metacercariae, the encysted larval stage of flukes capable of infecting the final and/or paratenic hosts, of Paragonimus miyazakii and of both diploid and triploid forms of P. westermani are found in the Japanese freshwater crab, Geothelphusa dehaani, which acts as the second intermediate host in Japan. This crab is known as Sawagani in Japanese and is widely distributed in Japan, from Hokkaido...
متن کاملDescription of a new montane freshwater crab (Crustacea: Potamidae: Geothelphusa) from northern Taiwan.
A new freshwater crab is described from a montane area in northern Taiwan based on morphological characters and molecular evidence. Geothelphusa cilan sp. nov., from the Cilan Forest, situated on the boundary of Hsinchu and Yilan (= Ilan) counties, is close to G. monticola Shy, Ng & Yu, 1994, and G. takuan Shy, Ng & Yu, 1994, but can be distinguished by its male first gonopod (G1) and the ratio...
متن کاملUltrastructure of Haemocytes of the Freshwater Crab
Latha Nadkandi Padmanabhan, Sudha Devi Arath Raghavan*, Chandrashekar Sagar Bhadravathi Kenchappa 4 5 Department of Zoology and Research Centre, Mary Matha Arts and Science College, Mananthavady, Wayanad, Kerala, 6 India 670 645 7 Department of Neuropathology, National Institute of Mental Health and Neurosciences, Bangalore, Karnataka, India 560 8 029 9 10 E-mail: [email protected] 11 12 Ab...
متن کاملساختار کلاسهایی از حلقه های z- موضعی و c- موضعی the structure of some classes of z-local and c-local rings
فرض کنیمr یک حلقه تعویض پذیر ویکدار موضعی باشدو(j(r رایکال جیکوبسن r و(z(r مجموعه مقسوم علیه های صفر حلقه r باشد.گوییم r یک حلقه z- موضعی است هرگاه j(r)^2=. .همچنین برای یک حلقه تعویض پذیر r فرض کنیم c یک عنصر ناصفر از (z( r باشد با این خاصیت که cz( r)=0 گوییم حلقه موضعی r یک حلقه c - موضعی است هرگاه و{0 و z(r)^2={cو z(r)^3=0, نیز xz( r)=0 نتیجه دهد که x عضو {c,0 } است. در این پایان نامه ساخ...
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ژورنال
عنوان ژورنال: NIPPON SUISAN GAKKAISHI
سال: 1985
ISSN: 1349-998X,0021-5392
DOI: 10.2331/suisan.51.175