Reproductive traits of the freshwater shrimp Caridina fossarum Heller, 1862 (Decapoda, Caridea, Atyidae) in the Ghomp-Atashkedeh spring (Iran)

بررسی خصوصیات ظاهری ماندیبول میگویDecapoda, Atyidae) 1862 )و fossarum Heller Caridina توسط میکروسکوپ الکترونی

A new species of freshwater shrimp of the genus Micratya (Decapoda: Atyidae: Caridea) from Puerto Rico.

The atyid genus Micratya Bouvier, 1913 was previously considered to be monotypic. The area in which the genus is dis-tributed is limited to the islands of the Antilles and Central America, with the type locality of Micratya poeyi being in Cuba. A recent molecular phylogenetic analysis of atyid shrimps from the Caribbean indicated the probable existence of a second species of Micratya from sampl...

Acute toxicity of Roundup herbicide to three life stages of the freshwater shrimp Caridina nilotica (Decapoda: Atyidae)

Glyphosate based herbicides, including Roundup , are frequently used in the chemical control of weeds and invading alien plant species in South Africa. These herbicides ultimately get into water courses directly or indirectly through processes such as drifting, leaching, surface runoff and foliar spray of aquatic nuisance plants. Despite their widespread use, no water quality guideline exists t...

Caridina simoni Bouvier, 1904 (Crustacea: Decapoda: Caridea: Atyoidea: Atyidae) and the synonymy by Johnson, 1963.

Johnson (1963) attempted to review the 'Caridina nilotica complex' established by Bouvier (1925) and as a result considered several distinct freshwater shrimp species from Indo-West Pacific region as junior synonyms of C. simoni Bouvier, 1904. However, Tiwari and Pillai (1971) indicated the need to clarify the taxonomical status of the many synonyms created by Johnson (1963). Therefore, type an...

بررسی امکان تهیه گسترش کروموزومی میگوی آب شیرین Caridina fossarum Heller 1862

این تحقیق جهت تهیه گسترش کروموزومی میگوی آب شیرین(Caridina fossarum) از تخم و لارو آن انجام شد. به علت اندازه کوچک این میگو به جای تزریق از روش غوطه وری استفاده گردید. این مطالعه تا مرحله ی مشاهده ی سلول ها و ترکیده شدن آنها و در نهایت کروماتیدها پیش برده شد. در مورد کار با سلول های تخم، سلولی مشاهده نشد که علت این امر را می توان به غشاء سخت کیتینی اطراف تخم و مرگ و میر احتمالی سلول ها...