Zillii, the study of seasonal dynamics showed that Diptera, Ephemeroptera
, Trichoptera, Molluscs, macrophytes fruits and scales were consumed in nearly the same quantities during both seasons.
% EPT: % Ephemeroptera
, Plecoptera and Trichoptera (MANDAVILLE, 2002), where the individual abundances of these orders reflects the water quality, because, in general, most of these organisms are more sensitive to organic pollution;
The diversity of fresh water habitats provide important spawning ground for fish such as Garra barreimiae (Cyprinidae) which is threatened and endemic to the Arabian Peninsula, including seven newly discovered insect species of which four (Order: Ephemeroptera
) have water dependent larval stages.
The presence of pollution sensitive ephemeroptera
was justified by low TDS and high LDO at Rasul Headworks.
2002) were calculated by taking into account the number of sensitive taxa (number of Ephemeroptera
, Odonata and Trichoptera taxa).
El analisis de contenido estomacal del ejemplar estudiado revelo el consumo de macroinvertebrados acuaticos de los ordenes Trichoptera y Ephemeroptera
en sus estadios adultos e inmaduros (larvas y ninfas); esto coincide con lo reportado en otras localidades de la Cordillera de la Costa Central (Voss, 1988).
Para cada estacion se estimo el indice de riqueza total de EPT (Ephemeroptera
, Plecoptera, Trichoptera), segun lo propuesto por CHARA (2003) y el indice BMWP (Biological Monitoring Working Party) modificado por ZUNIGA (2009).
Class Insecta, the only contributor to Phylum Arthropoda, was comprised of 5 orders namely Coleoptera (12 species), Diptera (8 species), Hemiptera (7 species), Odonata (2 species) and Ephemeroptera
Order N individuals N species Coleoptera 319 (275) 112 (92) Hemiptera 160(129) 49 (41) Lepidoptera 154 (101) 31 (28) Hymenoptera 101 (78) 31 (24) Diptera 89 (71) 30 (21) Orthoptera 65 (65) 27 (20) Dictyoptera 54 (53) 21 (17) Trichoptera 45 (39) 18 (17) Ephemeroptera
43 (25) 14 (14) Neuroptera 38 (18) 14 (6) Dermaptera 20 (17) 5 (5) Megaloptera 9 (8) 5 (5) Embioptera 7 (3) 2 (1) Values in parentheses show sample sizes after discarding specimens with ratio X < 2.0.
The reported larvae were Tanytarsus and Chaoborus (Diptera), and naiad of May-fly (Ephemeroptera
) was found abundantly.
Lightly hackled blue quills and gray midges, as well as emerger flies in sizes 18-20, are fooling fish feeding on paraleptophlebia and other tiny ephemeroptera
. Size 14 gray foxes have worked well, too, when the enormous evening clouds of siphlonuri hover over the stream.
Biosystematics of Dannella and related subgenera of Ephemerella (Ephemeroptera