Raymond P. Morgan

Genetic variation in white-tailed deer (Odocoileus virginianus) populations in Western Maryland

Genetic variation and differentiation in 326 white-tailed deer ( Odocoileus virgin-ianus ) from Allegany and Garrett counties, Maryland, were examined by horizontal starch gel electrophoresis. Of 57 loci examined, 18 were polymorphic. Patterns of frequency distribution of alleles at polymorphic loci indicate considerable genetic heterogeneity within deer from western Maryland; differentiation of deer populations was observed over short geographical distances. The genetic character of the deer of western Maryland is thought to be strongly influenced by natural selection, genetic drift, and the hunting regime.

Electrophoretic analysis of Campostoma anomalum, Rhinichthys cataractae and their F1 offspring

Abstract Campostoma anomalum, Rhinichthys cataractae and their F 1 hybrids were examined electrophoretically for 44 enzymatic loci, general muscle, and serum proteins. Of the 44 loci scored, acid phosphatase (ACP-B), alkaline phosphatase (AKP-A), esterase (EST-B), α-glycerophosphate dehydrogenase (GPD-A), malate dehydrogenase (MDH-A) and phosphoglucomutase (PGM-A) showed hybrid inheritance patterns. Serum proteins also demonstrated additive inheritance patterns, comprising 15 serum proteins in the parents and 18 in the F 1 hybrid. Banding patterns for all mixtures of parental species were identical to those observed in the hybrid.

Variation of individual electromorphs in Microtus pennsylvanicus and Peromyscus leucopus

Abstract Blood samples were taken from individual meadow voles ( Microtus pennsylvanicus ) and white-footed mice ( Peromyscus leucopus ) every three weeks. Two serum proteins, albumin and transferrin, were examined using acrylamide electrophoresis and densitometry. In individuals of both species, electrophoretic mobility and banding pattern changed. Such changes have been documented in other proteins, and may reflect changes in the internal or external environment of the individuals. Individual changes in serum proteins may seriously affect their interpretation, when used as genetic markers in population studies.

Serum proteins of selected Falconiformes and Strigiformes

Abstract Blood samples were collected from ten species of raptors during the Fall 1980 migration in the vicinity of Green Bay, Wisconsin. Serum protein electrophoresis was performed on the samples in order to compare taxa based on biochemical information and relate this to current systematics. Results based on the biochemical information are generally consistent with the current systematic positions of these species within their respective orders.

An intergeneric hybrid, Campostoma anomalum × Rhinichthys atratulus, from the Youghiogheny River drainage, West Virginia

Abstract The first record of a natural intergeneric hybrid of Campostoma anomalum × Rhinichthys atratulus is described from the Youghiogheny River drainage. Morphometric and meristic characters of the parents and hybrid were used to calculate a mean hybrid index value of 49.8. Dentition of the hybrid was intermediate as was intestinal coiling. In addition to the hybrid index, C. anomalum, R. atratulus and the hybrid were examined electrophoretically. Of the 32 enzymatic loci resolved, six (ADH-A, EST-B, LDH-A, PGM-A, SDH-B and SOD-C) showed hybrid inheritance patterns identical to the enzyme pattern obtained by mixing tissue extracts composed of the two parental species.

Inheritance patterns of enzymes and serum proteins of mallard-black duck hybrids

Abstract From 1974 to 1976, a breeding program was used to produce hybrids of black ducks and mallards for the evaluation of inheritance patterns of serum proteins and serum, liver and muscle enzymes. In addition to the crosses designed to produce hybrids, a series of matings in 1975 and 1976 were designed to evaluate inheritance patterns of a hybrid with either a black duck or mallard. At the F 1 level, hybrids were easily distinguished using serum proteins. However, once a hybrid was crossed back to either a mallard or black duck, only 12–23% of the progeny were distinguishable from black ducks or mallards using serum proteins and 23–39% using esterases. Muscle, serum and liver enzymes were similar between the two species.

Frequency of mallard-black duck hybrids along the atlantic coast determined by electrophoresis and plumage analysis

Abstract The frequency of mallard and black duck hybrids along the Atlantic flyway was estimated based on serum protein and serum esterase electrophoresis and plumage analysis. Hybrid frequencies for black ducks were low (below 10%) in Nova Scotia - Maine, Ontario and New Jersey and high (above 10%) in Maryland and Massachusetts. Plumage estimates tended to be higher for black ducks in Massachusetts and Maryland than estimates based on the electrophoretic work.