Gaviiformes


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Related to Gaviiformes: Gruiformes, Podicipediformes

Gaviiformes

[‚gā·vē·ə′fȯr‚mēz]
(vertebrate zoology)
The loons, a monofamilial order of diving birds characterized by webbed feet, compressed, bladelike tarsi, and a heavy, pointed bill.
References in periodicals archive ?
(36,37) Between 1980 and 2000, the Geographic National Health Center recorded 335 group mortality events involving 8877 birds belonging to 103 avian species, mainly Falconiformes, Anseriformes, (38) Strigiformes, Passeriformes, and Gaviiformes. (39) The primary toxic effect of organophosphate and carbamate pesticides on animals is the phosphorylation of the enzyme acetylcholinesterase and of other esterases at the nerve synapse 40 Phosphorylation inactivates the enzymes and prevents regulation of the level of the neurotransmitter acetylcholine at the synapse, resulting in excessive stimulation of the target organs.
Band 1: Erforshungsgeschichte, Gaviiformes, Podicipediformes, Procellariiformes.
Aquatic birds (Sphenisciformes, Gaviiformes, Podicipediformes, Procellariiformes, Pelecaniformes, and Charadriiformes).
Eastern Siberia Taxonomic order Lena Khromskaya Indigirka River Delta (1) Bay (2) River Delta (3) Gaviiformes 2 2 2 Anseriformes 13 6 10 Falconiformes 4 2 2 Galliformes 2 0 1 Gruiformes 0 0 0 Charadriiformes 24 13 22 Strigiformes 1 1 2 Passeriformes 8 4 6 Total species 54 28 45 Shannon-Wiener H 65.0 63.4 63.1 (8)