Nematodes

(Plant Parasitic Nematodes)

Nematodes (also called ‘roundworms’) are relatively small, multicellular, worm-like animals. They are found in almost every environmental niche imaginable, living free in soil, marine and freshwater habitats while feeding on bacteria, fungi, and nematodes, or as parasites of humans, insects, fish, larger animals and plants.

Plant parasitic nematodes are abundant in many soils and may be feed on roots and other below ground plant tissue as external feeders while living outside a plant or penetrate and enter plant tissue to live and feed internally causing damage to plants. While most species of plant parasitic nematodes feed on below ground plant tissue, a relatively fewer number may inhabit and feed on above ground tissue. Billions of dollars in losses to agricultural crops due to damages caused by plant parasitic nematodes occur worldwide every year. California’s agricultural industry could lose several hundred million dollars annually in crop losses if certain plant parasitic nematodes not known to occur or of limited occurrence in California would become widespread within the State.


PEST RATINGS:

Anguina funesta
Pest Rating: A

Anguina tritici | Wheat Seed gall nematode
Pest Rating: A

Asian Citrus Root-knot Nematodes
Pest Rating:  A

Bursaphelenchus coccophilus
Pest Rating: A

Criconemoides (syn. Criconemella De Grisse and Loof 1965), Taylor 1936
Current Pest Rating: D | Proposed Pest Rating: C                        Comment Period: 9/4/2019 through 10/19/2019

Ditylenchus destructor Thourne, 1945
Pest Rating: A

Ditylenchus dipsaci (Kühn, 1857) Filipjev, 1936
Pest Rating: C

Helicotylenchus spp.
Pest Rating: C

Helicotylenchus multicinctus
Pest Rating:  B

Hemicycliophora arenaria
Pest Rating: B

Heterodera carotae Jones, 1950
Pest Rating: B

Hirschmanniella belli Sher 1968
Current Pest Rating: D | Proposed Pest Rating: C                      Comment Period: 9/4/2019 through 10/19/2019

Hirschmanniella diversa Sher 1968
Current Pest Rating: D | Proposed Pest Rating: C                      Comment Period: 9/4/2019 through 10/19/2019

Longidorus elongatus: Needle nematode
Pest Rating:  B

Meloidogyne enterolobii Yang and Eisenback, 1983.
(A Root knot Nematode)
Pest Rating: A

Meloidogyne floridensis Handoo et al., 2004
Pest Rating: A

Meloidogyne marylandi Jepson and Golden, 1987
Current Pest Rating: Z | Proposed Pest Rating: C                        Comment Period: 9/18/2019 through 11/2/2019

Merlinius spp. (Allen 1955) Siddiqi, 1970
Current Pest Rating: D | Proposed Pest Rating: C                        Comment Period: 9/4/2019 through 10/19/2019

Paratrichodorus minor (Colbran, 1956) Siddiqi, 1974
Current Pest Rating: D | Proposed Pest Rating: C                            Comment Period: 9/4/2019 through 10/19/2019

Paratrichodorus porosus (Allen, 1957) Siddiqi, 1974
Current Pest Rating: D | Proposed Pest Rating: C                            Comment Period: 9/4/2019 through 10/19/2019

Paratrichodorus spp. (Siddiqi 1974) and Trichodorus spp. (Cobb 1913)
Current Pest Rating: D | Proposed Pest Rating: C                              Comment Period: 9/4/2019 through 10/19/2019

Paratylenchus spp. Micoletzky, 1922
Pest Rating: C

Pratylenchus alleni 
Pest Rating:  A

Pratylenchus coffeae
Pest Rating: B

Pratylenchus neglectus
Pest Rating: C

Pratylenchus thornei
Pest Rating: C

Quinisulcius spp. Siddiqi 1971
Current Pest Rating: D | Proposed Pest Rating: C                          Comment Period: 9/4/2019 through 10/19/2019

Radopholus similis (Cobb, 1893) Thorne, 1949
Pest Rating: A

Rotylenchulus reniformis
Pest Rating: A

Scutellonema spp. Cobb, 1913
Pest Rating: C

Tylenchorhynchus spp.
Pest Rating: C

Xiphinema index
Pest Rating: B