Precision of age estimates derived from scales and pectoral fin rays of blue sucker

  title={Precision of age estimates derived from scales and pectoral fin rays of blue sucker},
  author={Steven R. Labay and Jason G. Kral and Sam Stukel},
  journal={Fisheries Management and Ecology},
Evaluating the response of fish populations to environmental influences requires precise age estimation. Pectoral fin rays and scales were compared to determine which is more precise for estimating age of blue sucker, Cycleptus elongatus (Lesueur), from the Missouri River, USA. Mean coefficient of variation was significantly lower for fin rays both among three novice readers (rays 19.9%; scales 23.1%) and among three reads by a single experienced reader (rays 11.8%; scales 18.6%). Additionally… 

Comparison of the Precision of Age Estimates Generated from Fin Rays, Scales, and Otoliths of Blue Sucker

The use of pectoral-fin rays as a non-lethal method to obtain age estimates for Blue Suckers can provide reliable and reproducible results, similar to those that would be expected from using otoliths.

population in Lake Ladik, Samsun, Turkey.

Ages estimated from scales, vertebrae, opercles, utricular (lapillus) and lagenar (asteriscus) otoliths of 260 rudd (Scardinius erythrophthalmus L., 1758) specimens captured from Lake Ladik in

Movement, Habitat Use, and Population Dynamics of Blue Sucker in the Southern Great Plains

Freshwater migratory fishes are among the most imperiled taxa in the world. However, mobile life histories make the study and conservation of migratory fishes challenging. The undefined scope of

Archaeological data suggest broader early historic distribution for blue sucker (Cycleptus elongatus, Actinopterygii, Catostomidae) in New Mexico

Abstract Zooarchaeological data are increasingly important for establishing late Holocene conservation baselines for species of concern. The blue sucker (Cycleptus elongatus) is experiencing range

Habitat use and population characteristics of potentially spawning shovelnose sturgeon Scaphirhynchus platorynchus (Rafinesque, 1820), blue sucker (Cycleptus elongatus (Lesueur, 1817), and associated species in the lower Wisconsin River, USA

Growth in length was negligible for tagged and recaptured presumably spawning shovelnose sturgeon and low for blue sucker, suggesting that nearly all growth may have occurred prior to maturity and that fish may have matured at a wide range of sizes.

Ladik Gölü (Samsun, Türkiye)'ndeki kizilkanat baliği (Scardinius erythrophthalmus L., 1758) populasyonunda en güvenilir yaş tayini yönteminin belirlenmesi The determination of the most reliable ageing method for the rudd (Scardinius erythrophthalmus L., 1758) population in Lake Ladik, Samsun, Turkey

Ages estimated from scales, vertebrae, opercles, utricular (lapillus) and lagenar (asteriscus) otoliths of 260 rudd (Scardinius erythrophthalmus L., 1758) specimens captured from Lake Ladik in



Comparison of White Sucker Age Estimates from Scales, Pectoral Fin Rays, and Otoliths

Abstract The ages of 229 white suckers Catostomus commersonii from six drainages in the upper Missouri River basin were estimated from scales, pectoral fin ray sections, and lapilli otolith sections

Comparison of Age and Growth Estimates for River Carpsuckers Using Scales and Dorsal Fin Ray Sections

An alternative body structure may reduce variability in aging this species and provide more accurate estimates of the growth history and age structure of river carpsucker populations.

An Evaluation of the Precision of Fin Ray, Otolith, and Scale Age Determinations for Brook Trout

Bias was generally minimal; however, the age estimates derived from scales tended to be lower than those derived from otoliths within older (age > 2) cohorts, and age estimates were within 1 year of each other for 95% of the comparisons.

Precision and Relative Accuracy of Striped Bass Age Estimates from Otoliths, Scales, and Anal Fin Rays and Spines

Age estimates from scales, spines, and rays were usually within 1 year of the otolith age estimate for striped bass shorter than 900 mm TL, however, for stripedbass longer than 900mm TL, estimates from spines and scales were lower than estimates from otoliths by averages of 1.6 and 3.0 years, respectively.

Precision of Five Structures for Estimating Age of Common Carp

Otoliths (asteriscus) have been validated as an accurate structure for estimating age of common carp Cyprinus carpio but age estimation precision of four alternative structures relative to otolith age is analyzed.

Biological Notes on Blue Suckers in the Mississippi River

The total length-weight relationship for 153 blue suckers collected from areas of swift current in Pool 20, Mississippi River, was log10W = −6.69 + 3.59(log10L), and the largest blue sucker collected was age X (scales) or XIII (fin rays) and 817 mm long.

Precision of Scales and Pectoral Fin Rays for Estimating Age of Highfin Carpsucker, Quillback Carpsucker, and River Carpsucker

Exact agreement between readers and between-reader precision of age estimates of scales and pectoral fin rays for highfin carpsuckers, quillback carpsucking, and 135 river carpsucker were higher than scales and CV was lower for fin rays.

Precision of Hard Structures Used to Estimate Age of Riverine Catostomids and Cyprinids in the Upper Colorado River Basin

Between-reader precision and agreement of otolith age estimates with estimates from scales, fin rays, cleithra, and opercular bones are evaluated for native bluehead suckers and nonnative white suckers in the upper Colorado River basin in Wyoming.

Use of Fin‐Ray Sections to Age Walleye Pollock, Pacific Cod, and Albacore, and the Importance of this Method

Thin sections of fin rays were used to estimate the age of walleye pollock, Pacific cod, and albacore to help estimate the accuracy of age determinations in the absence of a validation procedure that is applicable to all age-groups in a population.

Lake Erie Yellow Perch Age Estimation Based on Three Structures: Precision, Processing Times, and Management Implications

Compared the precision associated with yellow perch age estimates from scales, sagittal otoliths, and anal spine sections, and the time required to process and estimate age from each structure, less-experienced readers tended to underestimate ages ofyellow perch.