Jean François Cart

6 Questions 8 Answers 0 Followers

Questions related from Jean François Cart

Is it a crayfish disease ?

Hello, do you have any idea what this white substance is in the pleopods of this crayfish Procambarus virginalis? Is it a disease?

27 September 2023 4,956 1 View

Are these black necroses caused by Fusarium wilt?

Hello, what is the disease that causes black spots and carapace necrosis on leg 5 and the carpopodite of a Pacifascatus leniusculus crayfish? I'm thinking fusariosis. Are the brown lines indicated...

27 September 2023 8,405 0 View

Ephydatia muelleri or fluviatilis ?

Hello, I have found this sponge, It seems to be Ephydatia. Is-it possible to distingue E. muelleri from E. fluviatilis with morphologic critères. Are they keys for freshwater sponges ? Many...

30 January 2020 5,835 4 View

Can someone identify this flatworm, Planaria, from temporary pond ?

I have found this flatworm, under stones, in a temporary pond last winter. The pond is in France at 100 km east of Paris. It is 2 cm long. Regards

17 August 2018 5,650 0 View

Can anybody give a name to this copepoda Lernaeocera ?

Hello, I found this parasite on freshwater Esox lucius. Is it possible to give it a name ?

02 October 2015 8,608 5 View

Identify parasite on Ranatra linearis ?

Hello, can any body help me to identify the red animals on this Ranatra linearis ? The animals are less than 1 mm long.

06 September 2015 6,550 4 View