Of, pertaining to, or situated near, the belly, or ventral side, of an animal or of one of its parts; hemal; abdominal; as, the ventral fin of a fish; the ventral root of a spinal nerve; -- opposed to dorsal.
the underside or belly of an animal. References Hill, Geoffery E. 1993. House Finch (Carpodacus mexicanus). In The Birds of North America, No. 46 (A. Poole and F. Gill, Eds.) Philadelphia: The Academy of Natural Sciences; Washington D. C.: The American Ornithologists' Union. Peterson, R.T., 1980. A Field Guide to the Birds, 4th edition, Houghton Mifflin, Boston. South Dakota Ornithologists' Union, 1991, The Birds of South Dakota, NSU Press: Aberdeen, SD. Terres, John K., 1980, The Audubon Society Encyclopedia of North American Birds, Alfred A. Knopf: New York.
apodeme (of parameral sheath): Parameral sheath extends anteriorly from enclosing the distphallus into two apodemes, the ventral and dorsal apodemes. The ventral apodeme is either single lobed (e.g. Therevinae) or forked (e.g. most Australiasian nontherevine genera).
under part. References Eddy, Samuel and James C. Underkill. 1974. Northern Fishes. University of Minnesota Press. Minneapolis. Scott, W. B. and E. J. Crossman. 1973. Freshwater fishes of Canada. Fisheries Research Board of Canada. Bulletin 184. Ottawa. Tomelleri, Joseph R. and Mark E. Eberle. 1990. Fishes of the Central United States. University Press of Kansas, Lawrence. Willis, David W. and Robert M. Newmann. 1994. Largemouth bass and panfish management strategies for small impoundments and ponds in South Dakota. Department of Game, Fish and Parks, Wildlife Division, Special Report 94-2, Pierre. Outreach Blue Dog Lake Fish Hatchery, RR 1, Box 22A, Waubay, SD 57523 Gavins Point National Fish Hatchery, U. S. Fish and Wildlife Service, RR 1, Box 293, Yankton, SD 57078. Phone 665-3352.