Results 61 to 70 of about 326 (119)

Comparing Aquatic Environmental DNA Collection Methods Across a Diel Cycle in a Lotic System

open access: yesEnvironmental DNA, Volume 8, Issue 2, March/April 2026.
Water samples were collected over 25 h from the Tangipahoa River, Louisiana, using active and passive environmental DNA methods to detect fish assemblages. Active sampling involved collecting water samples at hourly intervals for 25 h, whereas passive sampling deployed a stationary filter for 25 h.
Camden E. Oathout   +3 more
wiley   +1 more source

Variation in the shape and size of the scale of the Tigris bream (Acanthobrama marmid, Heckel, 1843) from the Tigris River, Türkiye attributed to Seasonality, Age and Sex: A geometric morphometric study

open access: yesRevista Científica
In this study, the Tigris bream Acanthobrama marmid individuals (44 females and 31 males) were captured from the Tigris River. The scale size (as centroid size) and shape were analyzed separately using 2–dimensional geometric morphometric methods ...
Serbest Bilici   +4 more
doaj   +1 more source

Length–weight relationships for 14 cypriniform freshwater fish species (Actinopterygii) from the Upper Mississippi River Basin [PDF]

open access: yesActa Ichthyologica et Piscatoria
Here, we use long-term monitoring data from fisheries surveys across six Mississippi River reaches spanning > 750 river miles (>1200 km) to estimate length–weight relationships (LWRs) for 14 cypriniform fishes native to the Upper ...
Justin C. Bagley   +1 more
doaj   +3 more sources

Dorsal and Pelvic Fin Deformities in Egirdira nigra (Teleostei, Leuciscidae), an Endangered and Endemic Species Collected from Eğirdir Lake, Türkiye

open access: yesZoodiversity
Abnormal specimens of Egirdira nigra (Kosswig & Geldiay, 1952) were gathered from Eğirdir Lake, Akkeçili Village, Türkiye, during standard ichthyological investigations in the area from May–September 2021.
L. A. Jawad   +3 more
doaj   +1 more source

A new super narrow-ranged endemic Phoxinus minnow (Leuciscidae) from the Caucasus [PDF]

open access: yesZoosystematics and Evolution
A new species, Phoxinus ayukensis sp. nov., from the Kuban basin (Northwestern Caucasus) is described. This species has an extremely narrow range of approximately 5–7 km in a seasonally almost drying stream within the karstic region.
Oleg N. Artaev   +4 more
doaj   +3 more sources

Piscivorous Vertebrates That May Pose a Risk to the Critically Endangered Mandra Shemaya, Alburnus mandrensis (Drensky, 1943) (Actinopterygii; Leuciscidae)

open access: yesDiversity
In the present study, we provide a checklist of the predators that may impact the population of the critically endangered Mandra shemaya (Alburnus mandrensis Drensky, 1943). This endemic fish only inhabits the basin of Mandra Lake in the Burgas district (
Dimitar Dimitrov   +6 more
doaj   +1 more source

Histological structure of the Altai osman digestive tract, Oreoleuciscus potanini (Cypriniformes: Leuciscidae)

open access: yesActa Biologica Sibirica
This study focuses on the histomorphological analysis of the digestive tract of the omnivorous ecological form of Altai Osman (Oreoleuciscus potanini Kessler, 1879), an endemic carp species of Central Asia that lacks a morphologically distinct stomach ...
Nikita I. Kochetkov   +5 more
doaj   +1 more source

Growth and Reproductive Capacity of the Endemic Fish Species Egirdira nigra (Teleostei: Leuciscidae)

open access: yesTurkish Journal of Bioscience and Collections
Objective: In this study, various characteristics of the Eğirdir minnow, an endemic species of Anatolia that inhabits specific/narrow areas, were determined from 142 individuals sampled between 2021 and 2022.
Fahrettin Küçük   +4 more
doaj   +1 more source

Effects of active protection of the endangered fish lake minnow, Eupallasella (Rhynchocypris) percnurus (Pallas, 1814), on its occurrence in Mazowieckie Voivodeship in Poland

open access: yesFisheries & Aquatic Life
Mazowieckie Voivodeship was the first region in Poland to widely apply fish translocations for the active protection of the lake minnow, Eupallasella (Rhynchocypris) percnurus, a species of the family Leuciscidae at serious risk of extinction.
Sikorska Justyna, Wolnicki Jacek
doaj   +1 more source

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