scholarly journals Validation of Annulus Formation in Spotted Sucker Otoliths

2015 ◽  
Vol 6 (1) ◽  
pp. 208-212 ◽  
Author(s):  
P. Andrew Strickland ◽  
Christopher R. Middaugh
Keyword(s):  
United States ◽  
Abundant Species ◽  
Population Characteristics ◽  
Incremental Analysis ◽  
Age Validation ◽  
Age Composition ◽  
Southeast United States ◽  
Annulus Formation ◽  
Apalachicola River ◽  
Weight Regression

Abstract Spotted suckers Minytrema melanops are found in many river systems from the Midwest to the Southeast United States. Though they are a relatively abundant species, otolith age validation methods have not been reported. The objective of this study was to validate annulus formation on the lapillar otolith for spotted suckers. We collected spotted suckers monthly from December 2005 to November 2006 in the Apalachicola River, Florida. Using marginal incremental analysis on whole browned lapillar otoliths, we validated that spotted suckers form one annulus per year between May and June. We also report population characteristics including a length–weight regression. This study validates otolith aging to provide an avenue for accurately assessing the age composition of spotted sucker populations, which will facilitate a better understanding of growth, recruitment, and mortality of the species.

scholarly journals Validation of Annulus Formation in Golden Shiner Otoliths

2020 ◽  
Vol 11 (1) ◽  
pp. 258-262
Author(s):  
P. Andrew Strickland ◽  
Scott M. Bisping ◽  
Hunter R. Hatcher
Keyword(s):  
United States ◽  
Age Estimation ◽  
Southeastern United States ◽  
Common Species ◽  
Incremental Analysis ◽  
Age Validation ◽  
Leon County ◽  
Golden Shiner ◽  
Annulus Formation ◽  
Golden Shiners

Abstract Golden Shiner Notemigonus crysoleucas is found in many lakes and ponds across the southeastern United States. Though it is a common species, otolith age validation methods have not been published. The objective of this study was to confirm annulus formation in lapillar otoliths of Golden Shiners collected monthly from September 2015 through August 2016 in Lake Jackson, Florida (Leon County). We collected at least 12 individuals each month of similar length (168–249 mm; presumably of the same cohort) to document annulus formation throughout the year. We sacrificed a total of 177 individuals from the 2013 year class, and we used their lapillar otoliths for marginal incremental analysis to calculate an index of completion and validate annulus formation. The monthly index of completion was highest from January through March and lowest in May and June, indicating that annuli were deposited once per year and confirming that lapillar otoliths are a valid age estimation structure for Golden Shiners.

Stereo photo series for quantifying natural fuels. Volume XII: Post-hurricane fuels in forests of the Southeast United States.

2009 ◽  
Author(s):  
Robert E. Vihnanek ◽  
Cameron S. Balog ◽  
Clinton S. Wright ◽  
Roger D. Ottmar ◽  
Jeffrey W. Kelly
Keyword(s):  
United States ◽  
Southeast United States

Characterization of non-methane hydrocarbons in the rural southeast United States

1997 ◽  
Vol 31 (23) ◽  
pp. 4017-4038 ◽  
Author(s):  
Lisa M. Hagerman ◽  
Viney P. Aneja ◽  
William A. Lonneman
Keyword(s):  
United States ◽  
Southeast United States

Phenolic compound profile of selected vegetables frequently consumed by African Americans in the southeast United States

2007 ◽  
Vol 103 (4) ◽  
pp. 1395-1402 ◽  
Author(s):  
Zhiliang Huang ◽  
Baowu Wang ◽  
Doris H. Eaves ◽  
James M. Shikany ◽  
Ralphenia D. Pace
Keyword(s):  
United States ◽  
African Americans ◽  
Phenolic Compound ◽  
Southeast United States

A new melanistic variant of the caterpillar hunter Calosoma wilcoxi LeConte, 1848 from Texas, United States of America and a preliminary phylogeny of the genus Calosoma Weber, 1801 (Coleoptera: Carabidae)

2016 ◽  
Vol 149 (1) ◽  
pp. 1-7 ◽  
Author(s):  
Jesse W. Ray ◽  
Matthias Seidel ◽  
Martin Husemann
Keyword(s):  
United States ◽  
United States Of America ◽  
Phylogenetic Analyses ◽  
Ground Beetle ◽  
Abundant Species ◽  
Cytochrome Oxidase Subunit ◽  
New Variant ◽  
Central Texas ◽  
Coi Sequences ◽  
Dark Blue

AbstractTwo aberrant ground beetle (Coleoptera: Carabidae) specimens from the genus Calosoma Weber, 1801 were collected in Waco, Texas, United States of America, in 2012–2013. The specimens, which are morphologically most similar to Calosoma wilcoxi LeConte, 1848, but are dark blue-black instead of the typical metallic green. We employed DNA barcoding and phylogenetic methods to confirm the identities of the aberrant specimens. Preliminary phylogenetic analyses of cytochrome oxidase subunit 1 (COI) sequences of central Texas and southwestern species place the aberrant specimens with 100% confidence as C. wilcoxi. The new variant of C. wilcoxi presumably occurs at low densities. Frequent collecting from 2011 to 2014 resulted in the discovery of only two of the aberrant coloured individuals among hundreds of typical green specimens. These specimens (to our knowledge) represent the first published record of melanistic Calosoma from North America. While the majority of North American species in the genus are naturally black, two of the most widely distributed and abundant species, C. scrutator (Fabricius, 1775) and C. wilcoxi, are typically green. We sequenced the aberrant form as well as all species co-occurring with the new colour morph at the collection locality and used records from GenBank and the Barcode of Life Data System to generate a preliminary phylogeny of the genus, which suggested that some of the currently established subgenera are likely not monophyletic.

scholarly journals Management of Daylily Rust With Different Fungicides and Fungicide Combinations

2017 ◽  
Vol 18 (3) ◽  
pp. 162-165 ◽  
Author(s):  
Robert S. Emmitt ◽  
James W. Buck
Keyword(s):  
United States ◽  
Disease Management ◽  
Disease Severity ◽  
Low Cost ◽  
Single Application ◽  
Southeast United States ◽  
Disease Progress Curve ◽  
Disease Progress ◽  
Progress Curve ◽  
Disease Pressure

Production nurseries and daylily hybridizers in the southeast United States rely on the use of fungicides to manage daylily rust, caused by the fungus Puccinia hemerocallidis. Foliar sprays of pyraclostrobin, flutolanil, tebuconazole, myclobutanil, chlorothalonil, mancozeb, pyraclostrobin + boscalid, flutolanil + tebuconazole, flutolanil + myclobutanil, flutolanil + chlorothalonil, and flutolanil + mancozeb applied on 14-day intervals, and a nontreated control, were evaluated under high disease pressure at three locations in Griffin, GA, in 2015. Tebuconazole or the tebuconazole + flutolanil treatment consistently had the lowest area under the disease progress curve (AUDPC) of the treatments. The addition of flutolanil to chlorothalonil or mancozeb did not improve rust control and no difference in disease severity was observed in any treatment containing contact fungicides on all assessment dates. Single application costs ranged from $10.21 to $95.96 with tebuconazole providing excellent disease management at a relatively low cost per application ($13.90).

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