65 RED SWAMP CRAYFISH
(PROCAMBARUS CLARKII) IN TOPANGA CREEK: REMOVAL EFFORTS AND ECOSYSTEM EFFECTS
Invertebrates consisted of a variety of groups including micro-crustaceans (copepods, ostracods, and Daphnia), red swamp crayfish
(Procambarus clarki), Corbiculidae (Corbicula fluminea), tapeworms, dipteran larvae and adults, Notonectidae, and odonate nymphs and adults.
Red swamp crayfish
has 2 pairs of sensory antennae, compound eyes, 2 large pincers or claws called chelipeds, 8 jointed walking legs, a segmented body, and tail.
But even this display of bravado is no match for invasive species such as western mosquitofish (Gambusia affinis), red swamp crayfish
(Procambarus clarkii), and sailfin molly (Poecilia latipinna), which have became established in most springs and compete for the same resources needed by native species.
Red swamp crayfish
, a native of the south-eastern United States, have been spotted in the Regent's Canal in central London, raising fears that they could spread across the country along waterways.
Contribution of different food supplements to growth and production of red swamp crayfish
Other aquatic invaders that have been spotted in Oregon include the Chinese Mitten Crab, the Oriental Weatherfish and the Rusty or Red Swamp Crayfish
In channel catfish, rainbow trout and red swamp crayfish
, levels of barium, cadmium, copper, chromium, silver, lead, arsenic, selenium and mercury were so low that some samples had no detectable quantities.
I was so happy to read the article on July 31st, first page about red swamp crayfish
showing up in the area.
These particular neurons convert small motions of tiny hair cells situated on the tail of the red swamp crayfish
into electrical pulses.
Though there are more kinds here, in the West we commercially harvest just two--the signal crayfish (Pacifastacus leniusculus), harvested in the Sacramento Delta and abundant in the wild throughout California, Washington, and Oregon; and the Louisiana red or red swamp crayfish
(Procambarus clarkii) found in Texas (and some California rice fields and irrigation ditches, where it's considered a pest).
Production of the red swamp crayfish
Procambarus clarkii in earthen ponds without planted forage: management practices and economics.