David R. Edds

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Verified

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• PhD
• Roe R. Cross Distinguished Professor at Emporia State University

Fishes in Nepal: ichthyofaunal surveys in seven nature reserves.

Global biodiversity hotspots are often remote, tectonically active areas undergoing climatic fluctuations, such as the Himalaya Mountains and neighboring Qinghai-Tibetan Plateau (QTP). They provide biogeographic templates upon which endemic biodiversity can be mapped to infer diversification scenarios. Yet, this process can be somewhat opaque for t...

Despite the global nature of the aquatic biodiversity crisis, drivers of extirpation vary among regions, making local‐level data collection crucial for adaptive management in understudied regions like the Himalaya Biodiversity Hotspot (HBH). As human population growth, economic development and environment change accelerate across the HBH it is impo...

The upper Jejuí River is a major tributary of the Paraguay River in eastern Paraguay and is the principal drainage for the Mbaracayú Forest Biosphere Reserve. Despite the international significance of the biosphere reserve and detailed documentation of its terrestrial fauna and flora, the fish fauna in its streams remains relatively unknown, with 4...

Lotic ecosystems harbor a disproportionate amount of global biodiversity, but continue to experience extinction rates greater than terrestrial. Alpine rivers and streams are especially threatened due to high rates of warming, glacier melt impacts, landcover change, and impoundment. Lack of monitoring, however, hampers conservation efforts in many r...

The recurrence of similar evolutionary patterns within different habitats often reflects parallel selective pressures acting upon either standing or independently occurring genetic variation to produce a convergence of phenotypes. This interpretation (i.e. parallel divergences within adjacent streams) has been hypothesized for drainage-specific mor...

We report 13 records of note of the Mudpuppy (Necturus maculosus) in eastern Kansas.

The Himalayan uplift, a tectonic event of global importance, seemingly disseminated aquatic biodiversity broadly across Asia. But surprisingly, this hypothesis has yet to be tested. We do so herein by sequencing 1,140 base-pair of mtDNA cytochrome-b for 72 tetraploid Nepalese/Bhutanese Snowtrout ( Schizothorax spp. ), combining those data with 67 G...

Freshwater fishes in the river and lake systems in the Himalayas and Tibetan Plateau are morphologically diverged but the evolutionary relationship of putative subspecies separated in these freshwater systems has not been explored. Snowtrout (Schizothorax spp.) are minnows (Cyprinidae) broadly distributed in Asia. Body shapes of 3 Lake Rara (northw...

We characterized morphological variation among 172 specimens of Badis sp. (Teleostei: Badidae), collected from across Nepal and previously identified as Badis badis, to investigate whether any represented an undescribed species. Size-corrected principal component analysis (PCA), cluster analysis (CA), and discriminant analysis (DA) revealed four si...

Streams and ponds in the Tallgrass Prairie National Preserve (TPNP), Chase County, KS, provide habitat for semiaquatic turtles, but turtle distribution and abundance in these waters is poorly documented. We compiled a list of semiaquatic turtles from unpublished reports of herpetofaunal sampling at TPNP, and sampled lower Fox Creek during summer 20...

We assessed zebra mussel (Dreissena polymorpha) distribution and density in four newly infested manmade reservoirs in the upper Neosho River Basin, Kansas, from March–November 2011. Density was estimated via monthly plankton samples to monitor veligers, visual searches to detect recruited zebra mussels, and colonization substrates to monitor settli...

In rivers of the upper Neosho basin, Kansas, USA, lowhead dams influence the downstream dispersal of zebra mussels (Dreissena polymorpha). We quantified density of planktonic zebra mussel larvae and abundance of recruited individuals at 13 sites in this river-reservoir system to examine potential effects of four lowhead dams on dispersal dynamics o...

Based on its native distribution and temperature constraints, the invasive zebra mussel (Dreissena polymorpha) was not expected to colonize southern portions of the U.S., but it has now spread from the Laurentian Great Lakes to the Gulf of Mexico. Temperature is critical in zebra mussel reproduction, yet no studies have compared gametogenesis in th...

We compared zebra mussel (Dreissena polymorpha) colonization of six commonly used construction materials (PVC, concrete, steel, galvanized steel, pressure-treated wood, aluminum) plus a native unionid mussel shell, and examined effectiveness of the Intersleek® 970 Fluoropolymer Foul Release Coating system applied to the six materials in limiting co...

Zebra mussel (Dreissena polymorpha) invasion greatly impacts aquatic systems, with economic and ecological consequences. Monitoring zebra mussel density and reproductive timing are essential for effective detection, management, and control of this invasive species. Veligers, the free-floating planktonic life stage of zebra mussels, are often monito...

https://kansaspress.ku.edu/978-0-7006-1961-0.html

Psilorhynchus pseudecheneis is redescribed based on examination of 120 specimens, 16-103 mm SL. It is distinguished from all congeners by its higher number of unbranched pectoral-fin rays and lateral-line scale rows, lower number of circumpeduncular scale rows, absence of scales from the dorsal midline between occiput and mid-point between occiput...

We created dot maps to indicate the district-wise distributions of 141 fish species collected in Nepal in 1996 and archived at the University of Kansas Natural History Museum and Biodiversity Institute (KU). Collections spanned Himalayan mountains to subtropical lowlands in 3 major river drainages across 32 of Nepal's 75 districts, and fishes from...

Turcinoemacheilus himalaya, new species, is described from the Koshi and Gandaki River basins of Nepal. The new species is distinguished from its hypothesised congener, Turcinoemacheilus kosswigi, from the Euphrates, Tigris and Karoun basins of the Middle East, by the presence of small scales on the posterior half of its body (v. absence of all sca...

I surveyed fishes in seven protected areas in Nepal, with 35 collections from four major river drainages in four national parks, two wildlife reserves, and one conservation area, ranging from Himalaya Mountains to subtropi-cal lowlands and from east to west throughout the country. Herein, I record fishes collected in each of these ar-eas and provid...

An increase in ichthyological activity in Nepal over the past 25 years has raised the number of fish species re-ported for the country. We provide details of the distribution of new records for 10 additional species captured from 25 sites during recent ichthyological exploration throughout Nepal: Puntius terio, Psilorhynchus gracilis, Lepidocephali...

The hypothesis that temperate stream fishes alter habitat use in response to changing water temperature and stream discharge was evaluated over a 1 year period in the Neosho River, Kansas, U.S.A. at two spatial scales. Winter patterns differed from those of all other seasons, with shallower water used less frequently, and low-flow habitat more freq...

Many vertebrate predators consume a wide variety of prey types, depending upon availability and vulnerability. In contrast, striped bass, Morone saxatilis, that have been introduced to Lake Texoma (Oklahoma-Texas, U.S.A.) use a very limited array of fish (mostly clupeids of the genus Dorosoma) as prey. As a large, mobile predator, M. saxatilis shou...

We assessed the effects of lowhead dams on the EPT group (ephemeropterans, plecopterans, and trichopterans) by sampling habitat and macroinvertebiates monthly from November 2000 to October 2001 at eight gravel bars centered around two lowhead dams on the Neosho River, Lyon County, Kansas. Sites included a reference and treatment site upstream and d...

Two new species of sisorid catfish of the genus Pseudecheneis are described from tributaries of the Ganges River in Nepal: Pseudecheneis crassicauda and P. serracula. Pseudecheneis crassicauda can be distinguished from congeners by a unique combination of 38–39 vertebrae, caudal peduncle depth 6.0–6.6% SL, eye diameter 7.5–8.3% HL, length of adipos...

We assessed the effects of lowhead dams on the EPT group (ephemeropterans, plecopterans, and trichopterans) by sampling habitat and macroinvertebrates monthly from November 2000 to October 2001 at eight gravel bars centered around two lowhead dams on the Neosho River, Lyon County, Kansas. Sites included a reference and treatment site upstream and d...

Erethistoides ascita, new species, and E. cavatura, new species, are described from tributaries of the Ganges River in Nepal. Erethistoides ascita is distinguished from congeners in the serrations on the anterior edge of the pectoral spine diverging at the distal quarter (vs. middle) and in having flattened and elongate plaque-like tubercles (vs. r...

We studied spatiotemporal patterns of fish assemblage structure in the Neosho River, Kansas, a system impounded by low-head dams. Spatial variation in the fish assemblage was related to the location of dams that created alternating lotic and lentic stream reaches with differing fish assemblages. At upstream sites close to dams, assemblages were cha...

The genetic population structure of the Pecos gambusia was assessed with protein lectrophoresis to determine the best way to preserve the genetic diversity of the species. This small, federally protected live‐bearing fish is endemic to the Chihuahuan Desert region of New Mexico and Texas, where it occupies four isolated spring systems in the Pecos...

Blue catfish Ictalurus furcatus and channel catfish Ictalurus punctatus, two large-bodied piscivore-omnivores in Lake Texoma, Texas-Oklahoma, U.S.A., showed very high overlap in food use, but substantial differences in use of habitat during the year. Both species primarily ate fishes, aquatic insects, vegetation and detritus, terrestrial insects, s...

During summers 1999 and 2000, we surveyed 40 sites in the Marais des Cygnes River (n=15), Fall River (n=13), and Elk River (n=12) in eastern Kansas, upstream from three reservoirs, to examine effects of reservoir inundation on upstream mussel assemblages. We recorded present and historically-occurring species plus 10 habitat variables at each site....

A re-evaluation of the status of fishes in Kansas suggests that 54 of the 116 native species should be assigned special conservation status due to substantial declines in distribution or abundance and/or their rarity in the state. Nine species are recommended for retention in their existing status of endangered, threatened, or species in need of co...

We compared freshwater mussel assemblages (Bivalvia: Unionidae) in a developing oxbow (old channel) and a newly-cut (new) channel of the Neosho River, Kansas, during 2001. We sampled mussels at approximately 1.5 km intervals, totaling 19 sites in the old channel and seven in the new, by groping substrate from bank to bank in a zigzag fashion along...

Many studies have assessed the effects of large dams on fishes and macroinvertebrates, but few have examined the effects of lowhead dams. We sampled fishes, macroinvertebrates, habitat, and physicochemistry monthly from November 2000 to October 2001 at eight gravel bar sites centered around two lowhead dams on the Neosho River, Kansas. Sites includ...

We sampled fishes monthly from November 2000 to October 2001 at four gravel bar sites along a 34-km stretch of the upper Neosho River in Lyon County, Kansas. We assessed the potential for interspecific competition among stream fishes, with focus on the federally threatened Neosho madtom, Noturus placidus, by using Pearson's correlation analysis wit...

Although the effects of effluent from many paper production processes have been studied extensively, the effects of hot-soda process effluent have not been investigated. To determine the impacts of this process on a riverine ecosystem in Nepal, we sampled fishes, macroinvertebrates, and physicochemical/microhabitat parameters of the Narayani River...

The three endemic species of Schizothorax from Lake Rara, Nepal comprise a putative cyprinid species flock. Mitochondrial DNA sequences were compared for specimens of the endemic species S.raraensis, S.macrophthalmus, and S.nepalensis, and specimens of S. richardsonii and S. progastus from the Karnali River, Koshi River, and Kali Gandaki River drai...

The Neosho madtom, Noturus placidus, is a small catfish listed by the U. S. Fish and Wildlife Service as threatened. Little is known of its breeding biology and behavior because high turbidity and flow during its spawning season prevent direct observation in the field, and captive propagation has met with limited success. We held Neosho madtoms in...

To test effects of long and short day-length on behavior of the Neosho madtom (Noturus placidus), we held six pairs of fish in separate tanks under 16 hr (L): 8 hr (D) (long-day) and six pairs under 12 hr (L): 12 hr (D) (short-day) photoperiods. An ethogram was created and behavior was electronically and continuously recorded. Two-minute intervals...

Freshwater mussels are declining rapidly in many parts of their range throughout North America, primarily as a result of anthropogenic alterations of their habitat, including damming of rivers. To assess the effects of lowhead dams on freshwater mussel assemblages in the Neosho River, Kansas, we sampled mussels by groping along transects and search...

The Neosho madtom (Noturus placidus) is listed as threatened by the federal government and the state of Kansas, and as endangered by the states of;Missouri and Oklahoma. Understanding the biology of the Neosho madtom is critical for its recovery. We investigated length-frequency distribution and sex structure and compared habitat use by adult and y...

We examined patterns of spatial heterogeneity in the Spring River basin fish community along with environmental correlates to assess the relative importance of geo-graphic distances and habitat differences among sites in explaining community structure. Spatial patterns of the fish community and environmental correlates, as indicated by results of M...

We used the technique of Randomly Amplified Polymorphic DNA (RAPD) to produce DNA fingerprints of white perch (Morone americana) and yellow bass (Morone mississippiensis), which recently have invaded and are sympatric in Browning Oxbow, Kansas/Missouri. Total DNA isolated from liver of 20 specimens of each species resulted in similar RAPD amplifica...

We conducted a biotelemetry study to assess spring movements and locate spawning areas of sauger (Stizostedion canadense) in a small (2800 ha.) Kansas reservoir lacking large river inflow. Twenty adult sauger were implanted with ultrasonic tags and tracked in Melvern Lake from February to June 1993. Movements, calculated as minimum displacement fro...

The Global Positioning System (GPS) is a superior surveying technology that quickly provides highly accurate, reproducible spatial data, even in remote reference-free areas. In this article we review fundamentals, limitations, and strengths of the technology. The GPS is a satellite-based navigation system that relies on radio signals having intrins...

We examined freshwater mussel assemblages at 99 sites from 1993 to 1995 in the Arkansas River system of southeastern Kansas and southwestern Missouri. Emphasis was placed on assessing the distribution, relative abundance, and habitat use of five unionid candidates for future federal listing (species of concern): Lampsilis rafinesqueana Frierson, 19...

We sampled a series of contiguous riffles and pools throughout one year to examine spatial and temporal variation in stream fish assemblages on a short, mitigated reach of the Cottonwood River, Kansas. One of three riffles sampled was an artificial riffle constructed as habitat restoration in an area previously dredged of gravel. Canonical correspo...

During the spring and summer of 1991 we investigated the distribution of the alligator snapping turtle (Macroclemys temminckii) in Kansas by surveying 12 historical sites and 72 other possible sites of occurrence in southeastern Kansas rivers and streams. Although we captured 1002 turtles of eight different species, no alligator snapping turtles we...

An artificial riffle was constructed in an area previously dredged of gravel in the Cottonwood River, Kansas, to restore habitat for the Neosho madtom Noturus placidus, classified as “threatened” by the federal government. Relative abundances of fishes on the artificial riffle were similar to those of fishes on two natural riffles, and the assembla...

Reproductive traits of the Neosho madtom, Noturus placidus, were studied in the Neosho River in east-central Kansas, and in static and flow aquaria from May through July 1992. Artificial substrata were placed in riffle and pool areas of the Neosho River, and in simulated riffle and pool environments in our laboratory. On 13 July, a clutch of 63 egg...

We sampled a series of riffles and pools on the Cottonwood River, Kansas, for one year to determine seasonal densities, habitat use, and the extent of inter-riffle movements of the Neosho madtom (Noturus placidus), a federally threatened catfish. The species exhibited limited seasonal variability in habitat use and appeared to be a year-round riffl...

Three species of map turtles, genus Graptemys, were trapped in rivers, streams, and lakes of southeastern and south-central Kansas, and 32 environmental variables were measured at each trap site to compare overlap in habitat use among species. Graptemys ouachitensis and G. pseudogeographica were collected in rivers with abundant basking sites. Howe...

This study investigates spatial and temporal patterns of fish assemblage composition in Nepal's Gandaki River, which exhibits extremes of altitude and environmental conditions. Samples (n = 156) were made at 81 sites from the river's headwaters at 3100 m altitude north of the Himalaya Mountains to its lowland mainstream 50 m above sea level on the...

We used starch gel electrophoresis to assay 24–28 presumptive gene loci in captive and natural populations of three species of endangered fishes held at the Dexter (New Mexico) National Fish Hatchery. The species included two cyprinodontids, the Leon Springs pupfish Cyprinodon bovinus and Comanche Springs pupfish C. elegans, and a poeciliid, the Pe...

A large, multiyear (1981–1986) gillnetting data set was used to assess patterns of seasonal habitat use by striped bass Morone saxatilis in Lake Texoma, Oklahoma–Texas. Large (>2.27 kg), medium (1.36–2.27 kg), and small (< 1.36 kg but not including age-0 individuals) fish exhibited different patterns of seasonal abundance in a study area about 40 k...

Products of 28-30 presumptive gene loci were used to describe variation in four pupfishes from New Mexico and/or Texas. Means of genic heterozygosity (H) and polymorphism (P) were very low in Cyprinodon tularosa and C. pecosensis (H̄ = .017-.027; P̄ = .04-0.7). In C. bovinus and C. elegans the values for those indices of variability were higher (H̄...