A5047989842- Fish Ecology and Management Studies
- Fish Biology and Ecology Studies
- Aquatic Invertebrate Ecology and Behavior
- Hydrology and Sediment Transport Processes
- Marine and fisheries research
- Fish biology, ecology, and behavior
- Water Quality and Resources Studies
- Archaeology and Natural History
- Hydrology and Watershed Management Studies
- Ecology and biodiversity studies
- Species Distribution and Climate Change
- Soil erosion and sediment transport
- Hydraulic flow and structures
- Marine animal studies overview
- Groundwater and Watershed Analysis
- Environmental DNA in Biodiversity Studies
- Marine and environmental studies
- Freshwater macroinvertebrate diversity and ecology
- Rangeland and Wildlife Management
- Animal Vocal Communication and Behavior
- Wildlife Ecology and Conservation
University of New Mexico
2007-2024
Archaeology Southwest
2020-2024
ORCID
2024
Sumitomo Precision Products (Japan)
2024
Abstract This is the third compilation of imperiled (i.e., endangered, threatened, vulnerable) plus extinct freshwater and diadromous fishes North America prepared by American Fisheries Society'S Endangered Species Committee. Since last revision in 1989, imperilment inland has increased substantially. list includes 700 extant taxa representing 133 genera 36 families, a 92% increase over 364 listed 1989. The reflects addition distinct populations, previously non-imperiled fishes, recently...
Reproductive strategy and egg type of Hybognathus amarus, H. placitus, Macrhybopsis aestivalis, Notropis girardi, N. jemezanus, simus pecosensis, stramineus were determined from laboratory experiments conducted between 1991 1995. The first six taxa pelagic-broadcast spawners that produced nonadhesive, semibuoyant eggs, whereas was a broadcast spawner laid demersaladhesive eggs. High-speed cinematography revealed spawning event consisted single male wrapping around the female's midsection...
Flow regulation and fragmentation of the world's rivers threaten integrity freshwater ecosystems have resulted in loss or decline numerous fish species. Pelagic‐spawning fishes (pelagophils) are thought to be particularly susceptible river because their early life stages (ichthyoplankton) drift until becoming free‐swimming, although extent transport is largely unknown. Transport velocity distance were determined for passively drifting particles, which mimicked physical properties...
Summary Freshwater fish commonly exhibit differences in reproductive seasonality within assemblages. However, the extent of variation timing among years is less well understood, particularly relation to environmental variation. Phenological shifts response variation, including climate change, can differ species and thereby change temporal resource partitioning (e.g. use nursery habitat, dietary items, etc.) potentially strength biotic interactions such as competition. To assess interannual...
-The Arkansas River shiner Notropis girardi was introduced into the Pecos River, New Mexico, in 1978 and common collections made 1986-1987. From since drainage, we analyzed patterns of dispersal abundance, compared life history traits with a native population N. from Revuelto Creek, Mexico. dispersed downstream, presumably single introduction, colonizing much mainstream (260 km) by 1981. Since 1981, distribution abundance has expanded slightly. Age structure, growth mortality rates are...
Abstract This study provides the first comprehensive evaluation of age and age–length relationships from an extant population federally endangered Rio Grande Silvery Minnow Hybognathus amarus . The surveyed was three fragmented reaches within about 290 km middle in New Mexico, last protected historical range species. A total 158 Minnows were collected autumn 2009 ( n = 83) spring 2010 75), with sampling designed to fill six 10‐mm size‐class bins that represent size characteristic juvenile...
Abstract Objective Characterizing habitat associations is useful to aid in understanding the requirements of native fishes, particularly those conservation concern. Our study objective was characterize mesoscale only remaining wild population Rio Grande Silvery Minnow Hybognathus amarus (a federally endangered desert river fish), and provide comparisons with mesohabitat availability middle Grande, New Mexico, from 1994 1996. Methods We collected fish monthly at two sites (separated by 160...
Pelagic-broadcast spawning riverine fishes (pelagophils), species that produce eggs and larvae drift laterally downstream with the current, are declining throughout their native ranges in North America. Persistence recolonization of pelagophils require upstream dispersal later life stages; however, observations limited. We performed a mark–recapture study stocked Rio Grande silvery minnow (Hybognathus amarus) Middle Grande, New Mexico, during 2002 to assess this imperiled pelagophil....
ABSTRACT Six Rio Grande basin cyprinid taxa compose a reproductive guild that spawns during increases in stream flow and broadcasts semibuoyant (drifting) eggs the current. Spawning by members is naturally initiated elevated flows spring snow-melt or summer rainstorms, but reservoir releases now also result spawning. Location development of material mimics physical properties would enable quantification displacement drifting assessment additive impacts flow, instream barriers, habitat...
growth, and provide further support for a winter breeding season in northwestern Louisiana. Dundee Rossman (1989) reported that the probable time of hatching sirens Louisiana is midwinter. Courtship activity preceding may explain higher fall captures here. I thank L. M. Hardy assistance encouragement throughout study. S. P. Ly ch provided with statistical anal ses, A. C. Raymond prepared Fig. 1.
Understanding fundamental life history and ecological attributes of declining endemic fishes is essential for developing effective strategies their conservation recovery. In the Great Plains desert rivers North America, numerous imperiled leuciscids belong to a unique reproductive ecotype with drifting eggs larvae (pelagophils). Herein, we synthesize three decades research on embryology early Rio Grande Silvery Minnow Hybognathus amarus, federally endangered member this ecotype, explore how...
Several fish species in lotic systems are pelagic broadcast spawners that produce nonadhesive, semibuoyant eggs drift downstream. This reproductive strategy and egg type appear to be common Plains stream cyprinids the west-central United States. Although it is relatively easy capture eggs, inability provide species-specific identification of this life stage has hindered studies on ecology history these fishes. While nets have been used collect process separating products from other organic...
Systematic larval fish surveys increase the probability of detecting rare species and provide ecological insights for more common that can be difficult to infer from older life-stages. To characterize reproductive success extant assemblage in western Grand Canyon portion Colorado River, we conducted systematic 2014 2015. The effort identified endangered razorback sucker (Xyrauchen texanus) as initiating spawning February with a continuation through July. We collected recently hatched...
Abstract In the San Juan River, recruitment of early ontogenetic stages federally endangered Razorback Sucker Xyrauchen texanus to subadult or adult is rare. Opercular deformities have been detected in larval and juvenile Suckers River were investigated as an impediment recovery species. Larval (age‐0) native catostomids taken from 1998 2012 examined for presence opercular deformities. The frequency severity compared with Bluehead Catostomus discobolus Flannelmouth latipinnis...
Abstract Differences in spawning ecology and early life history may influence the recruitment success of three sympatric catostomids Colorado River basin: Bluehead Sucker Catostomus discobolus , Flannelmouth C. latipinnis federally endangered Razorback Xyrauchen texanus . In San Juan River, all species annually produce larvae, but only suckers regularly recruit to juvenile phase older. Otolith microstructure analysis can determine age, growth rates, periodicity elucidate possible reasons for...
The short larval ontogenetic phase has a large impact on success or failure of fish populations due to naturally high mortality rates. Yet, for the federally endangered fishes Colorado Pikeminnow Ptychocheilus lucius and Razorback Sucker Xyrauchen texanus, information about this sensitive life stage is limited. We determined species-specific age–length functions, spawning periodicity, environmental factors related growth onset by these species in San Juan River basin. Daily ages were from...
Abstract Water diversions worldwide may entrain or impinge fish and have population‐level impacts, but barriers like screens can reduce such threats. Traditional are ineffective in the San Juan River, USA, due to high sediment debris loads, so Hogback Diversion Canal, NM, employs a novel weir wall design entrainment of sub‐adult adult fishes. We evaluated effectiveness reducing larval using combination experimental overnight trials. Larval densities were compared between irrigation canal...
Abstract The Rio Grande Silvery Minnow Hybognathus amarus is a small-bodied minnow emblematic of reproductive guild endemic to rivers the North American Great Plains. This species has been lost from over 90% its historical range. was federally listed as endangered in 1994 and intensive conservation efforts past three decades have averted extinction wild. article synthesizes life history species, causes decline existing threats, prospects for recovery considering ongoing efforts. Restoring...