Common stingray

Systematic position: The common stingray (lat. Dasyatis pastinaca) belongs to the order Myliobatiformes and the family Dasyatidae. It is a marine cartilaginous fish that inhabits sandy and muddy bottoms of coastal areas. It is not an agricultural pest and does not affect terrestrial or aquatic vegetation.

Biology and life cycle: The species exhibits aplacental viviparity. Reproduction involves internal fertilization, and the embryos develop within the uterus, sustained by histotroph. Newborns are miniature versions of adults and immediately inhabit the bottom substrate for camouflage and feeding.

Character of damage: Stingrays are strictly carnivorous predators that feed on bottom-dwelling invertebrates. They have no impact on plant growth, development, or structural integrity. Any reports labeling them as "plant pests" are biologically incorrect and do not reflect the ecological reality of this species.

Harmfulness: As a marine predator, the stingray does not cause damage to plants. In agricultural terms, it is considered neutral. Its influence is limited to the marine food chain, where it helps regulate populations of small crustaceans, mollusks, and small fish inhabiting the seabed.

Protection measures: Since the common stingray is not an agricultural pest, there are no management or control programs for it. In the context of shellfish aquaculture, physical barriers such as exclusion netting are the only recommended method to protect commercial stocks from natural predation by bottom-feeders.