Ecology of Lagenorhynchus obscurus
| Main Ref. | Jefferson, T.A., S. Leatherwood and M.A. Webber, 1993 |
|---|---|
| Remarks | Found over the continental shelf and slope. Feeds on southern anchovy and mid-water benthic prey such as squid and lantern fishes (Ref. 1394). Observed to have a common New Zealand octopus Pinnoctopus cordiformis attached to its dorsal area and caudal peduncle at different encounters. One encounter reported a group of dolphins to seem to be playing with the octopus. The dolphins were observed pulling and biting chunks from the octopus’s arms but not from its mantle; it was unclear if the tissue was eaten (Ref. 122722). |
Aquatic zones / Water bodies
| Marine - Neritic | Marine - Oceanic | Brackishwater | Freshwater | |
|---|---|---|---|---|
| Marine zones / Brackish and freshwater bodies |
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Habitat
| Substrate | |
|---|---|
| Substrate Ref. | |
| Special habitats | |
| Special habitats Ref. |
Associations
| Ref. | Jefferson, T.A., S. Leatherwood and M.A. Webber, 1993 |
|---|---|
| Associations | |
| Associated with | |
| Association remarks | |
| Parasitism |
feeding
| Feeding type | mainly animals (troph. 2.8 and up) |
|---|---|
| Feeding type Ref. | Jefferson, T.A., S. Leatherwood and M.A. Webber, 1993 |
| Feeding habit | hunting macrofauna (predator) |
| Feeding habit Ref. | Jefferson, T.A., S. Leatherwood and M.A. Webber, 1993 |
Trophic Level(s)
| Estimation method | original sample | unfished population | Remark | ||
|---|---|---|---|---|---|
| Troph | s.e. | Troph | s.e. | ||
| From diet composition | |||||
| From individual food items | 4.50 | 0.80 | Trophic level estimated from a number of food items using a randomized resampling routine. | ||
| Ref. | |||||