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Articles 91 - 108 of 108

Full-Text Articles in Aquaculture and Fisheries

Genetic Analysis Of Rhinichthys Atratulus (Pisces: Cyprinidae) In North Central West Virginia, Alan Harper Tennant Jan 1996

Genetic Analysis Of Rhinichthys Atratulus (Pisces: Cyprinidae) In North Central West Virginia, Alan Harper Tennant

Theses, Dissertations and Capstones

The blacknose dace, Rhinichthys atratulus, is a cyprinid minnow common to shallow streams throughout North America. It has been shown to be sensitive to anthropogenic stress and a study of the genetic nature of R. atratulus populations may yield information about their habitats. In West Virginia, two subspecies of R. atratulus are present, R. a. atratulus and R. a. obtusus, which are separated by the Allegheny divide. In north central West Virginia, R. a. atratulus was observed in the Cheat River drainage, an area previously thought be within the range of R. a. obtusus. Fish of the R. a. atratulus …


Reproductive Biology Of The Grass Pickerel Esox Americanus Vermiculatus Lesueur, From The Green Bottom Wildlife Management Area, Cabell County, West Virginia, Ronald Clifton Tipton Jan 1995

Reproductive Biology Of The Grass Pickerel Esox Americanus Vermiculatus Lesueur, From The Green Bottom Wildlife Management Area, Cabell County, West Virginia, Ronald Clifton Tipton

Theses, Dissertations and Capstones

The grass pickerel, Esox american us vermiculatus LeSueur, is listed as Undetermined on the Vertebrate Species List of Concern in West Virginia. The reason for the West Virginia status is that lentic, vegetated habitats required for spawning by the grass pickerel are limited within the state and are being reduced by agricultural, residential, and industrial developments. Green Bottom Swamp, a naturally occurring wetland of 58 hectares, provides habitat for the grass pickerel. A proposed habitat alteration to add marshland by building dykes prompted this study. Information from this investigation will establish a baseline for reproductive activities of the grass pickerel …


Factors Influencing The Spatial Distribution And Natural History Of Desmognathus Ochrophaeus In West Virginia, Linda D. Ordiway Jan 1994

Factors Influencing The Spatial Distribution And Natural History Of Desmognathus Ochrophaeus In West Virginia, Linda D. Ordiway

Theses, Dissertations and Capstones

Desmognathus ochrophaeus, the mountain dusky salamander, is a medium-sized Desmognathine, which inhabits moist woodlands. It is a slender species with a well rounded, slim and tapering tail (Bishop 1967), and 14 costal grooves (Green and Pauley 1987). The average total length is between 70 mm and 100 mm with the tail accounting for approximately half this length (Conant and Collins, 1991). The visual appearance of this salamander is highly variable (figure 1). Most individuals have a distinct light middorsal band with straight edges and darker sides. The colors of the band may vary from yellow, orange, or red to dark …


Reproductive Biology Of The Bowfin, Amia Calva Linnaeus, From The Green Bottom Wildlife Management Area, Cabell County, West Virginia, Katie Lee Mcginn Daniels Jan 1993

Reproductive Biology Of The Bowfin, Amia Calva Linnaeus, From The Green Bottom Wildlife Management Area, Cabell County, West Virginia, Katie Lee Mcginn Daniels

Theses, Dissertations and Capstones

The bowfin, Amia calva Linnaeus, is the only extant species of the family Amiidae. The Green Bottom Wildlife Management Area (GBWMA) is the home of the only known reproducing bowfin population in the state of West Virginia. The GBWMA (38°35' 35" N, 82°14' 55" W) is located along the Ohio River 26 km northeast of Huntington, West Virginia. The area (ca. 364 ha) contains a valuable wetland habitat (ca. 57 ha) in the southwestern portion of the state. A study of the reproductive biology of the bowfin became important when the u.s. Army Corps of Engineers proposed a habitat modification …


Aspects Of The Ecology Of The Wood Turtle, Clemmys Insculpta (Leconte), In West Virginia, Allan J. Niederberger Jan 1993

Aspects Of The Ecology Of The Wood Turtle, Clemmys Insculpta (Leconte), In West Virginia, Allan J. Niederberger

Theses, Dissertations and Capstones

An ecological study of the wood turtle, Clemmys insculpta (LeConte), was conducted in West Virginia from May 1991 to March 1993. Population structure at the primary study area (WV #1) was estimated to be 46% juvenile (H-8 yrs. old), 26% female and 28% male. Total population estimate for WV #1 was 337 wood turtles, with an aquatic density of 1,980 turtles per Hectare of river and a terrestrial density of 22.5 turtles per ha of terrestrial habitat. Growth measurements and estimates indicate rapid initial growth tapering off at year 8 and gradually declining through year 16. Males grow slightly faster …


Reproduction And Early Development Of A Hermaphroditic Unionid : Uniomerus Tetralasmus (Say, 1831), Joan E. Burton Jan 1987

Reproduction And Early Development Of A Hermaphroditic Unionid : Uniomerus Tetralasmus (Say, 1831), Joan E. Burton

Theses, Dissertations and Capstones

A population of a midwestern naiad, Uniomerus tetralasmus was discovered in West Virginia in 1984. A survey of this disjunct population was undertaken between May and December 1986. A study of the reproductive and early developmental stages was the primary objective. A description of the morphology, a shell aberration, a study of its ability to estivate, a correlation between sex types in lentic and lotic environments and explanations for its expansion to West Virginia are included as well. When permanent slides were made of the naiad's reproductive organs, the naiad was found to be a functional hermaphrodite. Eggs and sperm …


A Survey Of The Aspidogastrean And Hydracarine Parasites Of Bivalue Molluscs In Western West Virginia, Donald W. Danford Jan 1983

A Survey Of The Aspidogastrean And Hydracarine Parasites Of Bivalue Molluscs In Western West Virginia, Donald W. Danford

Theses, Dissertations and Capstones

Aspidogaster conchicola and Cotylaspis insignis were only two aspidogastrid trematodes recovered in a year long study involving 500 bivalves (22 species) collected from a thirteen county area in western West Virginia. Also collected were three species of aquatic mites identified as: Union­ icola fossulata, Unionicola formosa, and Najadicola ingens. Only ten species of mussels were infested with trematodes: Pleurabema cordatum (100%); Anodonta grandis (70% for A•conchicola, 60% for Q. insignia); Potamilus alata (50%); Tritogonia verrucosa (46%); Strophitus undulatus (6.25%); guadrula guadrula (33%); Amblema plicata (31%); guadrula postulosa (50%); Lampsilis ventricosa (7.11%); Lampsilis radiata luteola (7.12% for A. conchiocola, 10.2% for …


A Distributional And Taxonomic Study Of The Adults Of The Family Hydropsychidae (Trichoptera) In West Virginia, Toni Ann Phillips Jan 1982

A Distributional And Taxonomic Study Of The Adults Of The Family Hydropsychidae (Trichoptera) In West Virginia, Toni Ann Phillips

Theses, Dissertations and Capstones

A survey of the adult Hydropsychiclae revealed 39 species, 14 of which were state records. The adult hydropsychids were collected from various locations throughout West Virginia. The most common species Hydropsychidae were Hydropsyche morosa, H. sparna, Cheumatopsyche analis, C. campyla, and Diplectrona modesta. Most of the species did not appear to be limited to any one particular drainage basin. Several species exhibited a preference for stream order (headwaters, middlereaches, large rivers). Aphropsyche monticola, Parapsyche apicalis, Cheumatopsvche wrighti, C, gyra, and Hydropsyche alhedra preferred the fast-flowing headwater streams in the higher elevations of the state. Macrostemum zebratum, Potomyia flava, Hydropsyche phalerata, …


The Influence Of Habitat Variation On The Morphology And Physiology Of Plethodon Wehrlei (Fowler And Dunn) In West Virginia, Sharon Kay Gross Jan 1982

The Influence Of Habitat Variation On The Morphology And Physiology Of Plethodon Wehrlei (Fowler And Dunn) In West Virginia, Sharon Kay Gross

Theses, Dissertations and Capstones

High elevation, low elevation and cave populations of Plethodon wehrlei (Fowler and Dunn) in West Virginia were compared to determine the influence of habitat variation on morphology and physiology. Discriminant analysis of 14 external morphological characters and 11 skeletal characters revealed a similar morphology for the three populations. Comparisons of critical thermal maxima showed a positive correlation to habitat temperature. Dehydration studies revealed that the high elevation population was more resistant and tolerant to water loss than the cave and low elevation populations.


A Survey Of The Mussels (Pelecypoda: Unionoidia: Unionacea) Of Twelvepole Creek, West Virginia With A Study Of Commensal Algae Found On Selected Mussels, Kevin Joe Smith Jan 1981

A Survey Of The Mussels (Pelecypoda: Unionoidia: Unionacea) Of Twelvepole Creek, West Virginia With A Study Of Commensal Algae Found On Selected Mussels, Kevin Joe Smith

Theses, Dissertations and Capstones

A survey of the Unionacea of Twelvepole Creek, West Virginia was conducted coupled with a qualitative study of commensal algae found on selected mussel species. The naiads and the algae were found to have diverse populations. Naiads collected during the survey were represented by 23 species, 16 genera and 2 families. Corbicula fluminea was found to be confined largely to the main branch of Twelvepole, with no individuals being collected from the East or West Forks and only limited collections near the mouth of Beechfork Creek. Lampsilis radiata luteola and L. ventricosa were found to have the greatest distribution, being …


The Naiads (Mollusca: Unionidae) From Two Prehistoric Sites Along The Ohio River, Mason County, West Virginia, Beverly Dawn Spurlock Jan 1981

The Naiads (Mollusca: Unionidae) From Two Prehistoric Sites Along The Ohio River, Mason County, West Virginia, Beverly Dawn Spurlock

Theses, Dissertations and Capstones

Archeological naiad valves representing 29 species were recovered from two Late Prehistoric Indian villages along the Ohio River, Mason County, West Virginia. Surface collections and limited excavation provided a total of 1,599 identifiable valves and valve fragments. Dif­ferences in species compositions and relative abundances between the two middens were noted. Samples from the Rolf Lee Farm Site (46MS51) contained 28 species while the Lewis-Old Town Farm Site (46MS57) produced only 23 species. Comparisons were made with other nearby prehistoric shell deposits and also with more recent twentieth century collections from this reach of the river. Nine of the archeological species …


Food Habits Of Largemouth Bass, Micropterus Salmoides (Lacepede) And Spotted Bass, Micropterus Punctulatus (Rafinesque), From Beech Fork Reservoir, A New Impoundment In Wayne And Cabell Counties, West Virginia, Michael A. Arcuri Jan 1981

Food Habits Of Largemouth Bass, Micropterus Salmoides (Lacepede) And Spotted Bass, Micropterus Punctulatus (Rafinesque), From Beech Fork Reservoir, A New Impoundment In Wayne And Cabell Counties, West Virginia, Michael A. Arcuri

Theses, Dissertations and Capstones

A study was undertaken to determine the food habits of two game fishes, the largemouth bass Micropterus salmoides (Lacepede) and the spotted bass M. punctulatus (Rafinesque) in Beech Fork Reservoir shortly after its impoundment. A total of 171 largemouth bass and 95 spotted bass were collected from July 1978, through June 1979, and their stomach contents analyzed.

Largemouth bass fed primarily on fishes, particularly young-of-the-year bluegill. Aquatic and terrestrial invertebrates were also important food items, especially during the spring and fall . The dominant aquatic forms were chironomid larvae and pupae while the dominant terrestrial forms were adult dipterans.

Spotted …


A Post-Impoundment Investigation Of The Beech Fork Drainage Basin, Twelvepole Creek, Wayne And Cabell Counties, West Virginia, Donald Borda Jan 1980

A Post-Impoundment Investigation Of The Beech Fork Drainage Basin, Twelvepole Creek, Wayne And Cabell Counties, West Virginia, Donald Borda

Theses, Dissertations and Capstones

Fish populations were collected at six stations by means of electrofishing to determine the composition after impoundment. A total of 748 fishes weighing about 9 pounds (4 kg) were collected. Seven families representing 31 species were collected and categorized as game, forage and rough fishes. Game fishes made up 9.1 percent of the total number and 22.3 percent of the total weight; forage fishes 83.0 percent by number and 29.7 percent by weight. The average standing crop was 15 pounds per acre.

Benthic invertebrates were collected at six stations by means of a bottom dredge. A total of 1535 specimens …


The Life History And Ecology Of Ptilostomis Postica (Walker) (Trichoptera: Phryganeidae) In Greenbottom Swamp, Cabell County, West Virginia, Mary Beth Roush Jan 1979

The Life History And Ecology Of Ptilostomis Postica (Walker) (Trichoptera: Phryganeidae) In Greenbottom Swamp, Cabell County, West Virginia, Mary Beth Roush

Theses, Dissertations and Capstones

The life histoy and ecology of Ptilostomis postica (Walker) from Greenbottom swamp in Cabell County, West Virginia were investigated from December 1977 to December 1978, Length-frequency histograms indicate the life cycle is uriivoltine. Larvae achieved their greatest growth rate (75%) from fall to winter. Case length showed its greatest increase (70.3%) for this same period. There was high correlation between case length and body length in fall (r=0.72) and winter (r=0.87), however, a low correlation (r=0.18) was found in spring. The diet of the larvae changed from carnivorous in fall and winter to omnivorous in spring. Pupation began at the …


Proposed Environmental Impacts Of The Gallipolis Locks And Dam Replacement, Ohio River Mile 279.2, On The Benthic Macroinvertebrates And Fishes Of Flatfoot Creek, Mason County, West Virginia, William L. Cremeans Jr. Jan 1979

Proposed Environmental Impacts Of The Gallipolis Locks And Dam Replacement, Ohio River Mile 279.2, On The Benthic Macroinvertebrates And Fishes Of Flatfoot Creek, Mason County, West Virginia, William L. Cremeans Jr.

Theses, Dissertations and Capstones

The Gallipolis Locks and Dam at Ohio River Mile 279.2 is soon to be modified or replaced. Construction in the area will effect the lower portion of the small drainage basin (14.61 km) of Flatfoot Creek. Depending on the action taken, a large proportion of Flatfoot Creek and/or a tributary of Mud Run will have severe ecological alterations. For this reason, Flatfoot Creek was investigated for water quality, benthic macroinvertebrates, fish populations and the feeding requirements of the fishes.

A physio-chemical analysis was made of Flatfoot creek. With the exception of five parameters, the creek met guidelines set by state …


A Taxonomic And Distributional Study Of The Crayfishes (Decapoda: Cambaridea) Of West Virginia With Diagnostic Keys To Species Of The Genera Cambarus And Orconectes, Steven M. Lawton Jan 1979

A Taxonomic And Distributional Study Of The Crayfishes (Decapoda: Cambaridea) Of West Virginia With Diagnostic Keys To Species Of The Genera Cambarus And Orconectes, Steven M. Lawton

Theses, Dissertations and Capstones

This thesis is the first extensive investigation of West Virginia's crayfishes since Newcombe (1929) surveyed the state's fauna 50 years ago. Records, collections, and specimens were obtained from the 7 drainage areas of the state. Crayfish were collected from early spring through the fall of 1978. Both aquatic species and burrowers were included in the study. Presently, seventeen species and subspecies are known to exist in West Virginia. The genus Cambarus contains 10 of the total species of which three are primary burrowers. Cambarus nerterius, from the cavernous Greenbrier and Pocahontas counties of the Greenbrier River drainage, is the state's …


Comparative Ecological, Morphological, And Behavioral Studies Of The Southern Blacknose Dace, Rhinichthys Atratulus Obtustjs Agassiz, And The Eastern Blacknose Dace, Bhinichtbis Atbatulus Atra'fulus (Hermann), In High And Low Altitude Streams In West Virginia And Virginia, Michael L. Little Jan 1972

Comparative Ecological, Morphological, And Behavioral Studies Of The Southern Blacknose Dace, Rhinichthys Atratulus Obtustjs Agassiz, And The Eastern Blacknose Dace, Bhinichtbis Atbatulus Atra'fulus (Hermann), In High And Low Altitude Streams In West Virginia And Virginia, Michael L. Little

Theses, Dissertations and Capstones

Comparative ecological, aorphological, and behavioral studies of the southern blaeknose dace, Rhiniohthys atratulus obtusus Agassiz, and the eastern blaokaose dace, B.hiniohtpys atratulus atratulus (Heraann), were made in high and low altitude streaas in West Virginia and Virginia. Statistical comparisons of the morphology of a. a.atratulus and R-.a.-obtusus showed no reliable body character that differentiated the two subspecies. Statistical tests indicated an intergrading population in Gandy Creek, a tributary of the Cheat River, in West Virginia. This was further substantiated by collecting males of the atratulus phenotype along with males of the native obtusus phenotype in adjacent sections of Gandy Creek. …


Meteorological Factors Controlling The Emergence Of The Eastern Spadefoot Toad, Scaphiopus Holbrooki Holbrookii Harlan, Larry Judy Jan 1969

Meteorological Factors Controlling The Emergence Of The Eastern Spadefoot Toad, Scaphiopus Holbrooki Holbrookii Harlan, Larry Judy

Theses, Dissertations and Capstones

Scaphiopus holbrooki holbrookii, the Eastern Spadefoot, can exist in an area for many years before it is detected. Its apparent scarcity can be explained by its secretive, fossorial habitat, protective coloration, and nocturnal behavior. Spadefoots are present at the surface locally in small numbers on any one night. They emerge only when conditions are optimum. One authority has suggested that temperature, moisture, and barometric pressure exert control over emergence.

It was the purpose of this research to discover the most important meterorological parameters and investigate how they control the behavior of Scaphiopus.

Initially the response, emergence to breed was distinguished …