Medan CrayFish | CrawFish | Crawdad: August 2011

Monday, August 15, 2011

Louisiana Crawfish

Louisiana crawfish have been commercially available as food source since the late 1800's. The earliest account of a commercial crawfish harvest can be traced back to the year 1880 where crawfisherman netted over 23,000 pounds and bringing in $2100. In the wild, the two species of commercial significance are the red swamp crawfish (Procambarus clarkia) and the white river crawfish (Procambarus zonangulus). Because the species often coexist, it is common to find both in the same catch, and it is nearly impossible for crawfishermen to attract one species over the other in the wild. These wild crawfish are caught primarily in riparian zones, or lands and waters along rivers and slow moving streams

Yabbie Parasite : Crayfish Parasite :Temnocephids / Temnocephalida / Flat Worm

Temnocephids / The Temnocephalida are an order of turbellarian flatworms, Platyhelminthes (flat worms).
Unlike most other turbellarians, all the species in this order are either commensal or parasitic. They can be found living on crustaceans, molluscs, and, in some species, even turtles. The commensal species typically live in the gill or mantle cavities of their hosts, while the parasites live inside the digestive system. Anatomically, temnocephalidans can be distinguished from related groups by the presence of an adhesive disc on the underside for attachment to the host, and of a number of finger-like projections arising from the head.

Crayfish Plague / Crawfish Plague : The Plague Fungus ( Aphanomyces Astaci )

Segment with brown (ventral) markings shows signs of
typical infection from fungus.
Segments either side indicate healthy muscle tissue

Crayfish Plague / Crawfish Plague : The Plague Fungus (Aphanomyces Astaci)

Aphanomyces Astaci commonly referred to as crayfish plague is an oomycete or water mould that infects only crayfish species. It is endemic of North America and is carried by North American crayfish species; signal crayfish Pacifastacus Leniusculus, Procambarus Clarkii and Orconectes Limosus. A. Astaci was introduced into Europe through imports of North American species of crayfish. Native European crayfish populations are not resistant to this oomycete. It has since devastated native crayfish stocks throughout the continent.

Species name: Cherax Albidus
Common Names: Blue Pearl Yabbie / Blue Phase Yabbie / Yabby / The Victorian Blue Yabby / Yabbie Crayfish / Dam Yabby / Blue Claw / Blue Pearl Lobster / Australian Blue Pearl Lobster, Blue Crayfish
Genus : Cherax
Family: Parastacidae
Order: Decapoda
Class: Malacostraca
Max. size: Upto 20 Centimeter
Natural Range : Limited area of Western Victoria and South Australia

Western Yabby / Black Crayfish / Cherax Preissii / Cherax Glaber / Koonacs

Cherax Preissi / Black Yabby / Black Crayfish

Species Name: Cherax Preissi & Cherax Glaber
Common Names: Western Yabby, Black Crayfish, Black Yabby, Blue Black Australian Crayfish, Koonacs
Family: Parastacidae
Order: Decapoda
Class: Malacostraca

Procambarus Alleni / Blue Crawfish

Species name: Procambarus Alleni
Common Names: Electric Blue Crayfish/Crawfish/Crawdads, Florida Crayfish/Crawfish/Crawdads
Family: Cambaridae
Order: Decapoda
Class: Malacostraca
Max. size: Upto 7-8 inches

Water Parameter for Crayfish / Crawfish

Crayfish can be farmed in large freshwater ponds, a practice known as aquaculture, for food. The most commonly farmed species are Red Claw Crayfish (Cherax Quadricarinatus) in Southeast Asia and Australia and Red Crayfish (Procambarus clarkii) in America. Aquaculture fields typically are shallow ponds sometimes filled with swamp weeds and grass. The substrate of the pond is mud, preferably with a high clay content to prevent water from draining away.

Research has shown that red claw are most active in the evening between 6 p.m. and midnight. This should be the best time for daily feeding since the animals are actively foraging during this period. Broodstock nutrition is

Red Claw / Females

Red claw generally reach sexual maturity by the age of 6 to 12 months at which time they range from 2 to 3 ounces in weight. Mature male red claw develop a distinctive red or orange patch on the outside margin of the claws. Individuals of this same size without the reddish claw patch are usually females. The sexes are best identified, however, by examination of the genital openings on the underside of the cephalothorax at the base of the walking legs. Females have a pair of genital pores at the base of the third pair (counting from the head) of walking legs. Males have a pair of small genital papillae (small projections) at the base of the fifth pair of walking legs.

Crayfish Race / Yabby Race / Yabbies Race

Spirits were high as was the bidding at Australia's richest yabbie races on the Western Downs in Queensland over the weekend.

The event saw fashion, fun and frivolity, with some revellers declaring that it could easily have been Melbourne rather than Moonie.

Moonie's third annual yabbie races attracted around 300 people who watched 64 crustaceans compete in eight races.

White Spot Syndrome Virus (WSSV) has been confirmed in Crawfish / Crayfish

Facts on White Spot Syndrome Virus (WSSV)

By LSU AgCenter. White Spot Syndrome Virus (WSSV) has been confirmed for the first time in Louisiana in crawfish / crayfish from a pond in St. Martin Parish.

This crawfish disease seems to affect mostly the medium to large crawfish / crayfish. Symptoms include sluggish crawfish that don’t move much once they are dumped from the trap. They do not pinch hard and can’t walk. There are no color differences or obvious signs other than weakness and slowness. Some dead crawfish are noticeable in the traps while others are noticeable in the shallow water along the edge of the pond.

Prime Delivery Experience

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A few months ago finally I got Experience to Send Crayfish / Crawfish / Crawdads by plane,
why new posts today huh? hehehe sorry, i'm busy

About Medan

Medan (Indonesian: Kota Medan; pronounced [meˈdan]) is the capital of the North Sumatra province in Indonesia. Located on the northern coast, Medan is the fourth largest city in Indonesia

Growth and Survival Rate of Crayfish / Crawfish / crawdads

This research was held on October 20th – desember 20th 2006, in laboratory Indoor Fishery, Animal Husbandry and Fishery University of Muhammadiyah Malang. The purpose of this reaserch is to know the growth and survival rate crayfish / crawfish (Cherax quadricarinatus) in which expansion on extreme density unit difference spreading and to know is how much is giving and growth of survival rate best of freshwater crayfish (Cherax quadricarinatus) in extreme density unit.

Chitosan from Shrimps, Lobster, Crayfish / Crawfish or Crabs.

Bakso / Meatball

Chitosan is the modification of chitin, which found on the outer skin of Crustacea species such as shrimps, lobster, crayfish/crawfish and crabs.

Methylene blue (CI 52015) is a heterocyclic aromatic chemical compound with the molecular formula C16H18N3SCl. It has many uses in a range of different fields, such as biology and chemistry. At room temperature it appears as a solid, odorless, dark green powder, that yields a blue solution when dissolved in water. The hydrated form has 3 molecules of water per molecule of methylene blue.Methylene blue should not be confused with

Moulting Process

Postmolt (postecdysis)

Postmolt is the stage just following exuviation (shedding of the old exoskeleton). It is the period when the exoskeleton expands due to increased hemolymph volume from water influx. Water influx occurs across the epidermis, gills, and gut. After several hours or days (depending upon total length of the molt cycle), the new exoskeleton hardens and retains its rigidity (Chang, 1992).
Immediately after ecdysis, the only layers present are the epicuticle and exocuticle. Within a few hours the epidermis starts to secrete the endocuticle. Most of the cuticle must be derived from materials stored in the epidermis, as feeding does not begin until the prawn is well into the intermolt stage. This secretion continues until the prawns are in the intermoult condition, when the three layers are fully formed (Dall et al., 1990).

The purpose of this research is to know the effect of calcium addition on foods to frequency of Crayfish / Crawfish (Cherax quadricarinatus) moulting. From this research is expected obtainable of basic information about addition of appropriate calcium on foods, so that can be applied as reference in increase to frequency of Crayfish / Crawfish moulting and accelerate to growth of Crayfish / Crawfish
.

University of Maine Created Golf Ball From Lobster

Golf Ball from University of Maine

There's arguably no other institution in the world more fitting than UMaine to create a golf ball made entirely of biodegradable lobster shells.

Blue Crayfish / Blue Crawfish

Blue Crayfish

Cherax Quadricarinatus (known by several common names, including Australian red claw crayfish, Queensland red claw, redclaw, tropical blue crayfish, yabby and freshwater blueclaw crayfish) is an Australian freshwater crayfish.

Leipziger Allerlei Angerichtet

The cauliflower free from leaves and cut the thick shaft. Rinse with water. Give the cauliflower in a saucepan and cover with water. Strong salt water.

Gumbo Crawfish / Crayfish

Ingredients:
    2 lb Crawfish / Crayfish lg. shelled &
    1/3 c Celery, sliced 1/8 -inch thick
    2 c Okra, fresh & sliced 1/4-inch thick
    2 tb Filé powder

Both women and men can experience a drop in libido starting in their midforties or fifties as hormones decline. Exercise is important because it helps relieve stress hormones, which can interfere with a good libido. You don't want to do too much or not enough — about an hour-long workout four or five times a week is best.

Or you can tap into the mental component of your sex drive by using foods that you think are sexy. Common aphrodisiacs, such as oysters, persimmons, ambrosia, lobster, crawfish, crayfish,

Fins out the giving of Frozen Blood Worm with different percentage to the speed of growth of Crawfish/Crayfish

Blood Worm (Chironomus Sp.)

This research are carried out in July – August 2008, placed in Indoor Fishery laboratory, Animal
Husbandry Faculty – Fishery Muhammadiyah University Malang.
Purpose of this research are to fins out the giving of frozen blood worm (Chironomus sp.) with
different percentage to the speed of growth, FCR and the lifelines of the origin of freshwater
lobster (Cherax quadricarinatus).
Results of this research are hoped giving information to the society or practitioner who involved
in cultivation of crayfish / crawfish, about the use of a blood worm (larva Chironomus sp.) as the