| Image |
Descriptor |
Description |
Photographer |
| 1929044 |
Adult(s) |
|
Richard Chan |
| 5174020 |
Adult(s) |
biological control agent for Salvinia minima |
Katherine Parys |
| 5305062 |
Adult(s) |
|
Joseph LaForest |
| 5305063 |
Adult(s) |
on salvinia after treatment with herbicide |
Joseph LaForest |
| 5305066 |
Adult(s) |
on salvinia after treatment with herbicide |
Joseph LaForest |
| 5305068 |
Adult(s) |
on salvinia after treatment with herbicide |
Joseph LaForest |
| 5305070 |
Adult(s) |
|
Joseph LaForest |
| 5305071 |
Adult(s) |
|
Joseph LaForest |
| 5305072 |
Adult(s) |
|
Joseph LaForest |
| 5305077 |
Adult(s) |
|
Joseph LaForest |
| 5305078 |
Adult(s) |
|
Joseph LaForest |
| 1317057 |
Adult(s) |
This one-tenth-inch-long South American weevil, Cyrtobagous salviniae, is highly effective in reducing giant salvinia infestations to acceptable levels. |
Scott Bauer |
| 1355042 |
Biological Control |
Giant salvinia damaged by Cyrtobagous salviniae, a weevil whose larvae are extremely effective biocontrol agents against this water weed. |
Peggy Greb |
| 1317056 |
Biological Control |
Technician Eileen Porkorny (left) and Student Conservation Association member Laurie Bauer collect giant salvinia used for rearing the weevil Cyrtobagous Salviniae. |
Scott Bauer |
| 1929043 |
Biological Control |
Werombi creek in temperate Australia, near Sydney, three years after the weevil was released |
Mic Julien |
| 1929041 |
Control |
Over 90% of salvinia on Lake Moondarra was destroyed within 14 months by the salvinia weevil |
Peter Room |
| 1929042 |
Damage |
Werombi creek in temperate Australia, near Sydney, before the use of biological control |
Mic Julien |
| 1929040 |
Damage |
Lake Moondarra, Australia covered before the use of biological control |
Peter Room |
| 1355043 |
Larva(e) |
Close-up of a Cyrtobagous salviniae weevil larva. These 1/10th-inch long insects feed voraciously on buds and rhizomes of giant salvinia. |
Peggy Greb |
