نتایج جستجو برای: cherax quadricarinatus

تعداد نتایج: 323  

Journal: :Peptides 2005
Francisco Martínez-Pérez Samuel Zinker Guadalupe Aguilar Jesús Valdés Hugo Aréchiga

The RPCH and beta-actin cDNAs from the crayfish Cherax quadricarinatus were amplified, cloned and sequenced. The primary structure sequences of these cDNAs were compared to other members of the AKH/RPCH family. Fluctuations in the amount of the C. quadricarinatus RPCH and beta-actin mRNAs, as cDNAs, were quantified every 3h by RT-PCR. Single cosinor analysis supports the notion of beta-actin an...

1997
Amir Sagi Gideon Hulata

The effect of unilateral eyestalk ablation on reproduction, molting and quality of offspring was investigated in Cherax quadricarinatus females during the reproductive-arrest period (winter). At the end of the Autumn, females that had spawned for the first time had relatively uniform, early vitellogenic ovaries, while most females that had spawned previously had ovaries containing two distinctl...

2017
Ana L. Nunes Tsungai A. Zengeya Andries C. Hoffman G. John Measey Olaf L.F. Weyl

BACKGROUND The Australian redclaw crayfish (Cherax quadricarinatus, von Martens), is native to Australasia, but has been widely translocated around the world due to aquaculture and aquarium trade. Mostly as a result of escape from aquaculture facilities, this species has established extralimital populations in Australia and alien populations in Europe, Asia, Central America and Africa. In South...

2016
Tuan Viet Nguyen Scott F. Cummins Abigail Elizur Tomer Ventura

The Australian redclaw crayfish (Cherax quadricarinatus) has recently received attention as an emerging candidate for sustainable aquaculture production in Australia and worldwide. More importantly, C. quadricarinatus serves as a good model organism for the commercially important group of decapod crustaceans as it is distributed worldwide, easy to maintain in the laboratory and its reproductive...

2015
Jesse C. Leland Daniel J. Bucher Jason Coughran Heather M. Patterson

Recent studies have reported that crustacean age determination is possible. We applied a direct ageing method (i.e. transverse cross sectioning of gastric ossicles) to a subtropical freshwater crayfish (Cherax quadricarinatus) sourced from an aquaculture population. Growth mark periodicity and the potential for chronological depositions were investigated by staining C. quadricarinatus with calc...

Journal: :Acta Aquatica 2021

This study was aimed to examine the different natural feeds on maturnity of freshwater crayfish. The conducted November 20th - January 21th 2021 in UPTD BBI Lukup Badak, Takengon, Aceh Tengah. Test fish used is seed cherax quadricarinatus measuring 52-75 g. Methods this Completely Randomized Design (CRD) with 4 treatments and 3 replications. were P1 (Tubifex), P2 (505 tubifex, 255 carrots, 25% ...

Journal: :Revista de biologia tropical 2012
Lilian E Ferré Daniel A Medesani C Fernando García Matías Grodzielski Enrique M Rodríguez

The freshwater crayfish Cherax quadricarinatus is a tropical species of great interest for aquaculture. Vitellogenin (Vg), a lipoprotein precursor of the vitellum accumulated in spawned eggs, can be synthesized in the ovary and/or hepatopancreas of most crustaceans, being the hemolymph the way for transporting Vg throughout the reproductive cycle. Concentration of Vg in hemolymph, ovary and hep...

Journal: :Diseases of aquatic organisms 2000
B F Edgerton R Webb I G Anderson E C Kulpa

The redclaw freshwater crayfish Cherax quadricarinatus has a reputation for being hardy and resistant to handling stress. However, in recent years, possibly since 1996, C. quadricarinatus farmers in northern Queensland have noted a decrease in stress resistance in their stock. A presumptive reovirus in the hepatopancreas, and a putative parvovirus in the gills, were associated with chronic mort...

2000
Galit Yehezkel Reuben Chayoth Uri Abdu Isam Khalaila Amir Sagi

The high-density lipoproteins LPI and LPII were isolated from the hemolymph of the crayfish Cherax quadricarinatus by gradient ultracentrifugation and high-performance liquid chromatography (HPLC). Both lipoproteins contained a carotenoid moiety. LPI is comprised of a single polypeptide with an approximate molecular mass of 96 kDa. LPII was composed of two similar native components, LPIIa and L...

2015
Jenny Tynyakov Shmuel Bentov Shai Abehsera Isam Khalaila Rivka Manor Lihie Katzir Abilevich Simy Weil Eliahu D. Aflalo Amir Sagi Irene Söderhäll

The molar tooth of the crayfish Cherax quadricarinatus is part of the mandible, and is covered by a layer of apatite (calcium phosphate). This tooth sheds and is regenerated during each molting cycle together with the rest of the exoskeleton. We discovered that molar calcification occurs at the pre-molt stage, unlike calcification of the rest of the new exoskeleton. We further identified a nove...

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