Results 31 to 40 of about 1,457 (192)

The volume of the sample as a factor of survival of sturgeon spermatozoa after cryopreservation [PDF]

E3S Web of Conferences, 2020
This research was carried out to examine the effect of various volumes (0.5, 0.75, 1.5 and 2 mL) of the frozen sample on cryopreservation of sturgeon sperm and also the possibility of using the method of vitrification of sperm under deep low-temperature ...
Krasilnikova Aleksandra, Ponomareva Elena, Shvedova Svetlana, Magomedov Magomed, Rudoy Dmitry, Olshevskaya Anastasiya   +5 more
doaj   +1 more source

Ultrasonographic sex determination of the flathead grey mullet (Mugil cephalus)

Veterinary Medicine and Science, Volume 9, Issue 2, Page 802-809, March 2023., 2023
Determination of sex in fish without external sexual dimorphism is important. Sex determination of the flathead grey mullet (Mugil cephalus) in the culture system and spawn‐producing and fish reproduction system is very important. In this regard, 30 flathead grey mullets (early in their maturation) from a farm in Gomishan‐Golestan province, Iran were ...
Majid Masoudifard, Alireza Vajhi, Shahrzad Mohammadshahali, Omid Zehtabvar, Mehdi Moghim, Seyed Amin Mirhashemi Rostami   +5 more
wiley   +1 more source

Quantitative monitoring of diverse fish communities on a large scale combining eDNA metabarcoding and qPCR

Molecular Ecology Resources, Volume 23, Issue 2, Page 396-409, February 2023., 2023
Abstract Environmental DNA (eDNA) metabarcoding is an effective method for studying fish communities but allows only an estimation of relative species abundance (density/biomass). Here, we combine metabarcoding with an estimation of the total abundance of eDNA amplified by our universal marker (teleo) using a quantitative (q)PCR approach to infer the ...
Didier Pont, Paul Meulenbroek, Vincenz Bammer, Tony Dejean, Tibor Erős, Pauline Jean, Mirjana Lenhardt, Christoffer Nagel, Ladislav Pekarik, Michael Schabuss, Bernhard C. Stoeckle, Elena Stoica, Horst Zornig, Alexander Weigand, Alice Valentini   +14 more
wiley   +1 more source

Genomic investigation refutes record of most diverged avian hybrid

Ecology and Evolution, Volume 13, Issue 1, January 2023., 2023
In this article, Alfieri and colleagues revisit the identification of a historic avian hybrid, and using modern genetic techniques, correct the identification, while also correcting the record of the most diverged avian hybrid. Abstract The most diverged avian hybrid that has been documented (Numida meleagris × Penelope superciliaris) was reported in ...
James M. Alfieri, Taryn Johnson, Anna Linderholm, Heath Blackmon, Giridhar N. Athrey   +4 more
wiley   +1 more source

Atlantic sturgeon Acipenser oxyrinchus and alien sturgeon species in Polish waters: can biometric analysis assist species discrimination and restoration?

Acta Biologica, 2018
Biometric character analyses were conducted on Atlantic sturgeon Acipenser oxyrinchus, a species included in a re-establishment programme in the Baltic Sea basin.
Sławomir Keszka, Remigiusz Panicz
doaj   +1 more source

Ontogenetic development of pallid sturgeon (Scaphirhynchus albus) and shovelnose sturgeon (Scaphirhynchus platorynchus) from hatch through yolk absorption

Ecology of Freshwater Fish, Volume 32, Issue 1, Page 209-231, January 2023., 2023
Abstract Sturgeons have a complex free‐embryo period extending from hatch to the initiation of exogenous feeding. Although available for some sturgeon species of the genus Acipenser, descriptions of the developmental stages of free embryos of the genus Scaphirhynchus are lacking.
Kimberly A. Chojnacki, Marlene J. Dodson, Amy E. George, James S. Candrl, Aaron J. DeLonay   +4 more
wiley   +1 more source

Evaluation of Freshness of Farmed Two‐Year‐Old Acipenser persicus during Storage in Ice

Journal of Food Quality, Volume 2023, Issue 1, 2023., 2023
Chilled fish is considered a fresh product and helps to ensure the development of world trade. So, the present study aimed to investigate the freshness of two‐year‐old farmed A. persicus by chemical, microbial, sensory, and physical experiments, and determine its shelf life during ice storage.
Mina Seifzadeh, Ali Raoufi, Nadica Maltar Strmečki   +2 more
wiley   +1 more source

Recent advances in sturgeon nutrition. [PDF]

, 2017
Sturgeons are fish species of biological and economical importance, and most of them are endangered, vulnerable or rare because of their large size, late sexual maturity, long period between spawning, and longevity.
Hung, Silas SO
core   +2 more sources

Modern ecological problems of restoration and conservation of the sturgeon population in the Ural River basin

Юг России: экология, развитие, 2023
Aim. The aim of this study was to conduct an analysis of long‐term changes in the number of sturgeon populations and its relationship with the fishing regime and the current state of the Ural River basin, as well as develop measures for the conservation ...
K. M. Akhmedenov, A. A. Chibilev
doaj   +1 more source

Exploring Prey Selectivity and Feeding Habits of Wels Catfish (<i>Silurus glanis</i> L., 1758) in a Deep Anatolian Reservoir: Seasonal, Length, and Age-Dependent Diet Analysis. [PDF]

Aquac Nutr
Feeding habits and dietary preferences of wels catfish (Silurus glanis) were investigated in Sıddıklı Dam Lake through the examination of 200 individuals. The results revealed that the species predominantly exhibited piscivorous feeding characteristics, with Tinca tinca (IRI% = 78.93) identified as the primary food source. The food items in the stomach
Yazici R, Yilmaz M, Yazicioğlu O.
europepmc   +2 more sources