نتایج جستجو برای: uroteuthis duvaucelii
تعداد نتایج: 81 فیلتر نتایج به سال:
A long-term time series of plankton records collected by the continuous plankton recorder (CPR) Survey in the northeast Atlantic indicates an increased occurrence of Cnidaria since 2002. In the years 2007 and 2008, outbreaks of the warm-temperate scyphomedusa, Pelagia noctiluca, appeared in CPR samples between 45° N to 58° N and 1° W to 26° W. Knowing the biology of this species and its occurre...
In many species, males rely on sexual ornaments to attract females. Females, by contrast, rarely produce ornaments. The glow-worm (Lampyris noctiluca) is an exception where wingless females glow to attract males that fly in search of females. However, little is known about the factors that promote the evolution of female ornaments in a sexual selection context. Here, we investigated if the fema...
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هدف از این مطالعه بررسی و مقایسه غلظت عناصر کادمیوم، مس، روی و سلنیوم و روابط بین آنها در بافت های عضله و هپاتوپانکراس ماهی مرکب ببری (sepia pharaonis) و اسکوئید هندی (uroteuthis duvauceli) خلیج فارس بود. جهت انجام این تحقیق تعداد 30 عدد از هر گونه در دی ماه 1388 از آبهای شمالی خلیج فارس جمع آوری شد. هضم شیمیایی نمونه ها به روش اسیدی (4میلی لیتر اسید نیتریک 60% و 1 میلی لیتر اسید پرکلریک70%) صو...
Larvae of the nudibranch Phestilla sibogae are induced to metamorphose by a water-borne chemical cue released by the adult nudibranch's prey, the coral Porites compressa. In competent larvae, the apical sensory organ (ASO) includes five serotonergic parampullary neurons; five ampullary neurons, the ampullae of which are filled with sensory cilia; and a basal neuropil. After sensing the coral cu...
The genetic structure of the holopelagic scyphozoan Pelagia noctiluca was inferred based on the study of 144 adult medusae. The areas of study were five geographic regions in two European seas (Eastern Atlantic and Mediterranean Sea). A 655-bp sequence of mitochondrial cytochrome c oxidase subunit I (COI), and a 645-bp sequence of two nuclear internal transcribed spacers (ITS1 and ITS2) were an...
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