Occurrence of metacercariae of Austrodiplostomum compactum (Lutz, 1928) (Trematoda, Diplostomidae) in Pimelodus platicirris in the Ilha Solteira Reservoir, São Paulo, Brazil (original) (raw)
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ТремаТоды водно-БолоТных пТиц Карелии (по маТериалам 319-й соЮзной гельминТологичесКой эКспедиции 1958-1962 годов) г. а. Яковлева, д. и. лебедева, е. п. иешко Институт биологии Карельского научного центра РАН Приведен список трематод (Trematoda), представленный 34 видами, обнаруженными у 119 экз. водно-болотных птиц, добытых в ходе 319-й Союзной гельминтологической экспедиции 1958-1962 гг. в летне-осенний период на территории Карелии. Наиболее высокое разнообразие имеют представители сем. Diplostomidae (10 видов) и Echinostomatidae (7 видов). 16 видов впервые зарегистрированы на территории Карелии и 7-новые для Европейского Севера России. Наибольшее количество видов трематод обнаружено у клуши (13) и кряквы (8). К л ю ч е в ы е с л о в а: фауна, трематоды, водно-болотные птицы, 319-я Союзная гельминтологическая экспедиция, Карелия.
A. salinus inhabits the Crimean lakes under the salinity from 5 to 210 ‰. The earlier experiments have shown that the upper salinity limit of the species is 70 ‰. Authors explain this discrepancy of field and experimental data that at salinities above 100 ‰ copepods consume exoosmolytes, mainly from food. A. salinus is an osmokonformer, to survive under osmotic stress it utilizes mechanisms of cell level - accumulates the osmolytes. We found A. salinus under high salinities, where Dunaliella salina blooming observed. D. salina intensifies the synthesis of osmolytes under high salinities; they can be up to 80 % of the dry weight of the cells. Probably A. salinus gets enough osmolytes by consuming Dunaliella to live under salinities above 70 ‰. / Arctodiaptomus salinus обитает в водоёмах Крыма при солёности от 5 до 210 ‰. Увеличение солёности негативно влияет на численность вида, а температуры – на размер рачков. Наши эксперименты показали, что рачки способны выживать до солёности 90 ...