Reynaldo Patino, PhD
Unit Leader - Texas Cooperative Fish and Wildlife Research Unit
Research Interests
Reynaldo has 30+ years of research experience with the biology and management of fishes and amphibians. Topics of current interest include reproductive and developmental biology; impacts of environmental stressors, such as contaminants and climate change, on health and reproductive fitness; and relationships between water quality and aquatic habitat quality, including harmful algal blooms.
Teaching Interests
Reynaldo has taught courses in aquatic and animal ecophysiology and aquaculture.
Professional Experience
Unit Leader, Texas Cooperative Fish and Wildlife Research Unit, 1989-
Education and Certifications
Ph D Oregon State University 1988
MS Oregon State University 1983
BS Tokyo University of Fisheries 1980
Science and Products
Filter Total Items: 51
Desertification, salinization, and biotic homogenization in a dryland river ecosystem
This study determined long-term changes in fish assemblages, river discharge, salinity, and local precipitation, and examined hydrological drivers of biotic homogenization in a dryland river ecosystem, the Trans-Pecos region of the Rio Grande/Rio Bravo del Norte (USA/Mexico). Historical (1977-1989) and current (2010-2011) fish assemblages were analyzed by rarefaction analysis (species richness), n
Authors
S. Miyazono, Reynaldo Patiño, C.M. Taylor
Spatiotemporal associations of reservoir nutrient characteristics and the invasive, harmful alga Prymnesium parvum in West Texas
Golden alga (Prymnesium parvum) is a harmful alga that has caused ecological and economic harm in freshwater and marine systems worldwide. In inland systems of North America, toxic blooms have nearly eliminated fish populations in some systems. Modifying nutrient profiles through alterations to land or water use may be a viable alternative for golden alga control in reservoirs. The main objective
Authors
Matthew M. VanLandeghem, Mukhtar Farooqi, Greg M. Southard, Reynaldo Patiño
Are endocrine and reproductive biomarkers altered in contaminant-exposed wild male Largemouth Bass (Micropterus salmoides) of Lake Mead, Nevada/Arizona, USA?
Male Largemouth Bass were sampled from two locations in Lake Mead (USA), a site influenced by treated municipal wastewater effluent and urban runoff (Las Vegas Bay), and a reference site (Overton Arm). Samples were collected in summer (July '07) and spring (March '08) to assess general health, endocrine and reproductive biomarkers, and compare contaminant body burdens by analyzing 252 organic chem
Authors
Steven L. Goodbred, Reynaldo Patiño, Leticia Torres, Kathy R. Echols, Jill A. Jenkins, Michael R. Rosen, Erik Orsak
Introduction to Special Issue: Disruption of thyroid, sex steroid, and adrenal hormone systems and their crosstalk in aquatic wildlife
No abstract available.
Authors
Reynaldo Patiño, James A. Carr
Health status of Largescale Sucker (Catostomus macrocheilus) collected along an organic contaminant gradient in the lower Columbia River, Oregon and Washington, USA
The health of Largescale Sucker (Catostomus macrocheilus) in the lower Columbia River (USA) was evaluated using morphometric and histopathological approaches, and its association with organic contaminants accumulated in liver was evaluated in males. Fish were sampled from three sites along a contaminant gradient In 2009, body length and mass, condition factor, gonadosomatic index, and hematocrit w
Authors
Leticia Torres, Elena B. Nilsen, Robert A. Grove, Reynaldo Patiño
Retrospective analysis of associations between water quality and toxic blooms of golden alga (Prymnesium parvum) in Texas reservoirs: Implications for understanding dispersal mechanisms and impacts of climate change
Toxic blooms of golden alga (GA, Prymnesium parvum) in Texas typically occur in winter or early spring. In North America, they were first reported in Texas in the 1980s, and a marked range expansion occurred in 2001. Although there is concern about the influence of climate change on the future distribution of GA, factors responsible for past dispersals remain uncertain. To better understand the fa
Authors
Reynaldo Patiño, D. Dawson, Matthew M. VanLandeghem
Golden alga presence and abundance are inversely related to salinity in a high-salinity river ecosystem, Pecos River, USA
Prymnesium parvum (golden alga, GA) is a toxigenic harmful alga native to marine ecosystems that has also affected brackish inland waters. The first toxic bloom of GA in the western hemisphere occurred in the Pecos River, one of the saltiest rivers in North America. Environmental factors (water quality) associated with GA occurrence in this basin, however, have not been examined. Water quality and
Authors
Natascha M.D. Israël, Matthew M. VanLandeghem, Shawn Denny, John Ingle, Reynaldo Patiño
Distribution and habitat associations of juvenile Common Snook in the lower Rio Grande, Texas
Common Snook Centropomus undecimalis were once abundant off the Texas coast, but these populations are now characterized by low abundance and erratic recruitment. Most research concerning Common Snook in North America has been conducted in Florida and very little is known about the specific biology and habitat needs of Common Snook in Texas. The primary objective of this study was to describe the
Authors
Caleb G. Huber, Timothy B. Grabowski, Reynaldo Patiño, Kevin L. Pope
Fishes and amphibians as laboratory model organisms for toxicological research
No abstract available.
Authors
Sandeep Mukhi, Leticia Torres, Bibek Sharma, Madhavi Billam, Reynaldo Patiño
Contaminants of legacy and emerging concern in largescale suckers (Catostomus macrocheilus) and the foodweb in the lower Columbia River, Oregon and Washington, USA
We investigated occurrence, transport pathways, and effects of polybrominated diphenyl ether (PBDE) flame retardants and other endocrine disrupting chemicals (EDCs) in aquatic media and the foodweb in the lower Columbia River. In 2009 and 2010, foodweb sampling at three sites along a gradient of contaminant exposure near Skamania (Washington), Columbia City (Oregon) and Longview (Washington) inclu
Authors
Elena B. Nilsen, Steven D. Zaugg, David A. Alvarez, Jennifer L. Morace, Ian R. Waite, Timothy D. Counihan, Jill M. Hardiman, Leticia Torres, Reynaldo Patiño, Matthew G. Mesa, Robert Grove
Regulation of gonadal sex ratios and pubertal development by the thyroid endocrine system in zebrafish (Danio rerio)
We examined associations between thyroid condition, gonadal sex and pubertal development in zebrafish. Seventy-two-hour postfertilization larvae were reared in untreated medium or in the presence of goitrogens (sodium perchlorate, 0.82 mM; methimazole, 0.15 and 0.3 mM) or thyroxine (1 and 10 nM) for 30 days. Thyrocyte height, gonadal sex and gonadal development were histologically determined at 45
Authors
Prakash Sharma, Reynaldo Patiño
Potential for bias in using hybrids between common carp (Cyprinus carpio) and goldfish (Carassius auratus) in endocrine studies: a first report of hybrids in Lake Mead, Nevada, U.S.A
During a 2008 study to assess endocrine and reproductive health of common carp (Cyprinus carpio) in Lake Mead, Nevada (U.S.A.) we identified two fish, one male and one female, as hybrids with goldfish (Carassius auratus) based on morphology, lateral line scale count, and lack of anterior barbels. Gross examination of the female hybrid ovaries indicated presence of vitellogenic ovarian follicles; w
Authors
Steven L. Goodbred, Reynaldo Patiño, Erik Orsak, Prakash Sharma, Shane Ruessler
Science and Products
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Filter Total Items: 51
Desertification, salinization, and biotic homogenization in a dryland river ecosystem
This study determined long-term changes in fish assemblages, river discharge, salinity, and local precipitation, and examined hydrological drivers of biotic homogenization in a dryland river ecosystem, the Trans-Pecos region of the Rio Grande/Rio Bravo del Norte (USA/Mexico). Historical (1977-1989) and current (2010-2011) fish assemblages were analyzed by rarefaction analysis (species richness), nAuthorsS. Miyazono, Reynaldo Patiño, C.M. TaylorSpatiotemporal associations of reservoir nutrient characteristics and the invasive, harmful alga Prymnesium parvum in West Texas
Golden alga (Prymnesium parvum) is a harmful alga that has caused ecological and economic harm in freshwater and marine systems worldwide. In inland systems of North America, toxic blooms have nearly eliminated fish populations in some systems. Modifying nutrient profiles through alterations to land or water use may be a viable alternative for golden alga control in reservoirs. The main objectiveAuthorsMatthew M. VanLandeghem, Mukhtar Farooqi, Greg M. Southard, Reynaldo PatiñoAre endocrine and reproductive biomarkers altered in contaminant-exposed wild male Largemouth Bass (Micropterus salmoides) of Lake Mead, Nevada/Arizona, USA?
Male Largemouth Bass were sampled from two locations in Lake Mead (USA), a site influenced by treated municipal wastewater effluent and urban runoff (Las Vegas Bay), and a reference site (Overton Arm). Samples were collected in summer (July '07) and spring (March '08) to assess general health, endocrine and reproductive biomarkers, and compare contaminant body burdens by analyzing 252 organic chemAuthorsSteven L. Goodbred, Reynaldo Patiño, Leticia Torres, Kathy R. Echols, Jill A. Jenkins, Michael R. Rosen, Erik OrsakIntroduction to Special Issue: Disruption of thyroid, sex steroid, and adrenal hormone systems and their crosstalk in aquatic wildlife
No abstract available.AuthorsReynaldo Patiño, James A. CarrHealth status of Largescale Sucker (Catostomus macrocheilus) collected along an organic contaminant gradient in the lower Columbia River, Oregon and Washington, USA
The health of Largescale Sucker (Catostomus macrocheilus) in the lower Columbia River (USA) was evaluated using morphometric and histopathological approaches, and its association with organic contaminants accumulated in liver was evaluated in males. Fish were sampled from three sites along a contaminant gradient In 2009, body length and mass, condition factor, gonadosomatic index, and hematocrit wAuthorsLeticia Torres, Elena B. Nilsen, Robert A. Grove, Reynaldo PatiñoRetrospective analysis of associations between water quality and toxic blooms of golden alga (Prymnesium parvum) in Texas reservoirs: Implications for understanding dispersal mechanisms and impacts of climate change
Toxic blooms of golden alga (GA, Prymnesium parvum) in Texas typically occur in winter or early spring. In North America, they were first reported in Texas in the 1980s, and a marked range expansion occurred in 2001. Although there is concern about the influence of climate change on the future distribution of GA, factors responsible for past dispersals remain uncertain. To better understand the faAuthorsReynaldo Patiño, D. Dawson, Matthew M. VanLandeghemGolden alga presence and abundance are inversely related to salinity in a high-salinity river ecosystem, Pecos River, USA
Prymnesium parvum (golden alga, GA) is a toxigenic harmful alga native to marine ecosystems that has also affected brackish inland waters. The first toxic bloom of GA in the western hemisphere occurred in the Pecos River, one of the saltiest rivers in North America. Environmental factors (water quality) associated with GA occurrence in this basin, however, have not been examined. Water quality andAuthorsNatascha M.D. Israël, Matthew M. VanLandeghem, Shawn Denny, John Ingle, Reynaldo PatiñoDistribution and habitat associations of juvenile Common Snook in the lower Rio Grande, Texas
Common Snook Centropomus undecimalis were once abundant off the Texas coast, but these populations are now characterized by low abundance and erratic recruitment. Most research concerning Common Snook in North America has been conducted in Florida and very little is known about the specific biology and habitat needs of Common Snook in Texas. The primary objective of this study was to describe theAuthorsCaleb G. Huber, Timothy B. Grabowski, Reynaldo Patiño, Kevin L. PopeFishes and amphibians as laboratory model organisms for toxicological research
No abstract available.AuthorsSandeep Mukhi, Leticia Torres, Bibek Sharma, Madhavi Billam, Reynaldo PatiñoContaminants of legacy and emerging concern in largescale suckers (Catostomus macrocheilus) and the foodweb in the lower Columbia River, Oregon and Washington, USA
We investigated occurrence, transport pathways, and effects of polybrominated diphenyl ether (PBDE) flame retardants and other endocrine disrupting chemicals (EDCs) in aquatic media and the foodweb in the lower Columbia River. In 2009 and 2010, foodweb sampling at three sites along a gradient of contaminant exposure near Skamania (Washington), Columbia City (Oregon) and Longview (Washington) incluAuthorsElena B. Nilsen, Steven D. Zaugg, David A. Alvarez, Jennifer L. Morace, Ian R. Waite, Timothy D. Counihan, Jill M. Hardiman, Leticia Torres, Reynaldo Patiño, Matthew G. Mesa, Robert GroveRegulation of gonadal sex ratios and pubertal development by the thyroid endocrine system in zebrafish (Danio rerio)
We examined associations between thyroid condition, gonadal sex and pubertal development in zebrafish. Seventy-two-hour postfertilization larvae were reared in untreated medium or in the presence of goitrogens (sodium perchlorate, 0.82 mM; methimazole, 0.15 and 0.3 mM) or thyroxine (1 and 10 nM) for 30 days. Thyrocyte height, gonadal sex and gonadal development were histologically determined at 45AuthorsPrakash Sharma, Reynaldo PatiñoPotential for bias in using hybrids between common carp (Cyprinus carpio) and goldfish (Carassius auratus) in endocrine studies: a first report of hybrids in Lake Mead, Nevada, U.S.A
During a 2008 study to assess endocrine and reproductive health of common carp (Cyprinus carpio) in Lake Mead, Nevada (U.S.A.) we identified two fish, one male and one female, as hybrids with goldfish (Carassius auratus) based on morphology, lateral line scale count, and lack of anterior barbels. Gross examination of the female hybrid ovaries indicated presence of vitellogenic ovarian follicles; wAuthorsSteven L. Goodbred, Reynaldo Patiño, Erik Orsak, Prakash Sharma, Shane Ruessler - News