Seasonal variations in size and morphology of Acanthocyclops robustus (Copepoda Cyclopoida)
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چکیده
منابع مشابه
Short Note Size Variations in the Morphological Structures of Thermocyclops Decipiens (kiefer 1929) (copepoda Cyclopoida) from South-southeast Brazilian Rivers
Size variation in the morphological structures of microcrustaceans has been frequently reported for temperate environments (Einsle, 1988; Ricarddi and Mariotto, 2000). According to Dole-Olivier et al. (2005) these variations can be adaptative responses to different environmental factors, such as predation, competition, temperature and density. Most of these conclusions are based on studies of c...
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ویژگی های زمین شیمیایی، کانی شناسی، و میکرومورفولوژیکی خاک ها و سنگ مادر مربوطه در منطقه بین بخش های جنوبی زاگرس و خلیج فارس تا دریای عمان(استان هرمزگان، ایران) مورد بررسی قرار گرفت. هدف های این مطالعه شناسایی تغییرات در خصوصیات فیزیکی، شیمیایی، و ترکیب کانی شناسی خاک، مطالعه میکرومورفولوژی و تکامل خاک، و بررسی توزیع عنصر خاک بر اساس هوازدگی، پروسه های خاک و زمین شناسی جهت توصیف اثرات مواد مادر...
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although there are studies on pragmatic assessment, to date, literature has been almost silent about native and non-native english raters’ criteria for the assessment of efl learners’ pragmatic performance. focusing on this topic, this study pursued four purposes. the first one was to find criteria for rating the speech acts of apology and refusal in l2 by native and non-native english teachers...
15 صفحه اولSetal Developmental Patterns of Thoracopods of the Cyclopidae (copepoda: Cyclopoida) and Their Use in Phylogenetic Inference
Thoracopod developmenl was analyzed for 25 species from 18 genera among the Cyclopidae. One species from each of 7 genera of presumed older cyclopoids. 5 poeciloslomaloid genera. 3 harpacticoid genera, 5 calanoid genera, and a siphonoslomatoid were studied to help establish ancestral patterns of thoracopod development. Ancestral character states were inferred from the presence of identical stat...
متن کاملDormancy, dispersal and the survival of cyclopoid copepods (Cyclopoida, Copepoda) in a lowland floodplain
1. The survival of cyclopoid copepods was investigated in a floodplain for 2 years where flooding occurred during the cold season. The cyclopoid community was studied in three waterbodies with distinct hydroperiods: a permanent pond connected to the flooded area during inundation, a temporary pool that is part of the flooded area and an isolated temporary pool. 2. Field studies, including data ...
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ژورنال
عنوان ژورنال: Journal of Plankton Research
سال: 1996
ISSN: 0142-7873,1464-3774
DOI: 10.1093/plankt/18.6.907