Pest

Risso's dolphin

Grampus griseus

Description

Risso's dolphin, scientifically known as Grampus griseus, is a unique marine mammal belonging to the family Delphinidae within the order Cetacea. It is the only member of the genus Grampus, distinct from other dolphin species due to its specific anatomical and behavioral traits.

It is crucial to clarify that this species is not an agricultural pest. Risso's dolphins are entirely marine creatures that reside in deep offshore waters worldwide. They pose no threat to crops, plants, or any terrestrial agricultural operations, as their habitat and diet are restricted to the ocean.

The biology of the species is defined by its preference for cephalopod prey, primarily squid. Physically, they are robust, reaching lengths of up to 4 meters. A defining visual characteristic is the accumulation of light-colored scars on the skin, which form throughout their lives as a result of social interactions and foraging.

The reproductive cycle of the species involves a long gestation period, typically lasting around 12 months. Calving intervals are relatively long, which makes the species sensitive to environmental disturbances. They live in small, loose-knit pods and exhibit complex social behaviors.

From an agronomic perspective, there are no control measures or protection strategies required for this species because it does not interact with agricultural land. The conservation efforts for Risso's dolphin are focused solely on marine habitat protection to ensure the survival of this fascinating cetacean.

Biology

Taxonomy

Latin name
Grampus griseus
Family
Delphinidae

Taxonomy and Latin: EPPO Global Database · code GRMPGR

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