Results 21 to 30 of about 9,140 (253)
Reproductive characteristics of northern pike, Esox lucius (Actinopterygii: Esociformes: Esocidae), in the Anzali Wetland, southwest Caspian Sea [PDF]
Acta Ichthyologica et Piscatoria, 2016 Background. Temporal variability in fish reproductive features is influenced by environmental and spatial variations. Given the wide distribution of northern pike, Esox lucius Linnaeus, 1758, in the northern hemisphere, important reproductive features ...
M. Moslemi-Aqdam +5 more
doaj +3 more sources
Understanding drivers of wild oyster population persistence
Scientific Reports, 2021 Persistence of wild Pacific oyster, Magallana gigas, also known as Crassostrea gigas, has been increasingly reported across Northern European waters in recent years.
Mickael Teixeira Alves +2 more
doaj +1 more source
Neotropical Ichthyology, 2017 The reproductive potential of red porgy in coastal waters of Buenos Aires Province (Argentina) and Uruguay (34º-39ºS) was studied by means of a macroscopic and histological analysis of the gonads.
María I. Militelli +4 more
doaj +1 more source
Integrated Environmental Assessment and Management, EarlyView., 2023 Abstract In the Lake Koocanusa‐Kootenai River system (Montana, USA and British Columbia, Canada), selenium (Se) contamination has become an international concern and is suspected to contribute to the observed burbot (Lota lota) population collapse. Due to our limited ability to sample burbot in Lake Koocanusa for monitoring studies, we used a reference
Stephanie D. Graves +6 more
wiley +1 more source
A General Overview on Some Aspects of Fish Reproduction
Aceh International Journal of Science and Technology, 2014 - Reproduction is one of the important physiological systems that are crucial in the life cycle of living organisms including fish. The main objective of the reproduction is to maintain the existence of the species and therefore fish have a strategies ...
Zainal A. Muchlisin
doaj +1 more source
Scientia Marina, 2001 Spawning frequency and batch fecundity were estimated for Brazilian flathead, Percophis brasiliensis, in Argentine coastal waters. Samples of this species were collected during the spawning period in November 1998 and 1999. Spawning frequency, determined
M. I. Militelli, G. J. Macchi
doaj +1 more source
Individual Spawning Duration of Captive Atlantic Bluefin Tuna (Thunnus thynnus) Revealed by Mitochondrial DNA Analysis of Eggs. [PDF]
PLoS ONE, 2015 This study presents the first results on Atlantic bluefin tuna (Thunnus thynnus) individual spawning duration and its short-term temporal behavior. The study was based on direct measurements resulting from mtDNA analysis of the offspring of spawners held
Ana Gordoa, Nuria Sanz, Jordi Viñas
doaj +1 more source
Spawning Drivers and Frequency of Endangered Atlantic Sturgeon in the York River System
Transactions of the American Fisheries Society, 2020 AbstractDespite over 100 years of commercial exploitation for their eggs, there is limited information about the spawning behavior of Atlantic Sturgeon Acipenser oxyrinchus oxyrinchus. Spawning return intervals for males and females have been estimated in the most general of time spans, and researchers have established only in the last 25 years that ...
Christian H. Hager +2 more
openaire +2 more sources
Flavin Catalysts in Organic Synthesis
Angewandte Chemie, EarlyView.Flavins and their congeners are potent catalysts for organic synthesis inspired by enzymatic transformations. In addition to catalysis in the flavin ground state via covalent intermediates, the excited singlet and triplet states unlock applications including photooxidation, photoreduction, and energy transfer via sensitization.
Jan Freudenberg, Golo Storch
wiley +2 more sources
Annual Fecundity of European Anchovy: A Case Study in the North Aegean Sea (Eastern Mediterranean)
FishesEgg production estimates are key indicators of stock reproductive potential. In indeterminate spawners, annual fecundity cannot be estimated prior to the spawning season and, instead, requires quantification of batch fecundity and spawning frequency ...
Eudoxia Schismenou +2 more
doaj +1 more source