Results 71 to 80 of about 31,270 (237)

Enquête sur la répartition des virus des salmonidés dans les salmonicultures de la région aquitaine et des régions limitrophes

open access: yesKnowledge and Management of Aquatic Ecosystems, 1988
Dans le Sud-Ouest de la France, 599 prélèvements de truites AEC (Salmo gairdneri) (71 %), de truites fario (Salmo trutta) (14 %), d'ombles de fontaine (Salvelinus fontinalis) (1 %), de saumons atlantiques (Salmo salar) (2 %), et d'espèces diverses (12 %),
NOUGAYREDE P.
doaj   +1 more source

Morphological differences in the skin of marble trout <i>Salmo marmoratus</i> and of brown trout <i>Salmo trutta</i>

open access: yesFolia Histochemica et Cytobiologica, 2012
Despite being genetically very closely related, the marble trout <em>Salmo marmoratus</em> and the brown trout <em>Salmo trutta</em> exhibit marked phenotypic differences, particularly with regard to skin pigmentation ...
Urška Sivka   +2 more
doaj   +1 more source

Effect of salinity on motility and viability of salmonid spermatozoa [PDF]

open access: yesActa Ichthyologica et Piscatoria, 1979
Spermatozoa of trout (Salmo trutta L.), lake trout (S. trutta m. lacustris L.), rainbow trout (S. gairdneri Rich.), and brook trout (Salvelinus fontinalis (Mitch.)) kept at 8-10&deg;C without water in various diluting fluids behaved in all media more
L. Tomasik, A. Sobociński
doaj   +3 more sources

Early maternal experience shapes offspring performance in the wild [PDF]

open access: yes, 2013
Both the environments experienced by a mother as a juvenile and an adult can affect her investment in offspring. However, the implications of these maternal legacies, both juvenile and adult, for offspring fitness in natural populations are unclear.
Armstrong, J.D.   +4 more
core   +1 more source

Do the biological characteristics of trout (Salmo trutta) smolts influence their spring migration timing and maiden marine sojourn duration?

open access: yesJournal of Fish Biology, EarlyView.
Abstract Anadromous salmonids migrate seaward to exploit feeding and growth opportunities in marine habitats, yet how smolt biological characteristics influence their marine migratory behavior remains poorly understood. This study used 9 years of trout (Salmo trutta) population monitoring data from 15,595 tagged age‐0+ parr, 1033 smolts detected ...
Jonathan P. Gillson   +11 more
wiley   +1 more source

Порівняльно-морфологічне дослідження еритроцитів форелі струмкової, лина та сома звичайного

open access: yesНауковий вісник Східноєвропейського національного університету імені Лесі Українки: Серія: Біологічні науки, 2019
Досліджено еритроцити лина (Tinca tinca L.), сома звичайного (Silurus glanis L.) та форелі струмкової (Salmo trutta L.). Наведено відмінності щодо розмірів червонокрівців, їх щільності, ядерно-цитоплазматичного співвідношення й умісту гемоглобіну в крові
Yaroslav Omelkovets’
doaj   +1 more source

Feeding selectivity of brown trout (Salmo trutta) in Loch Ness, Scotland [PDF]

open access: yes, 2000
The aim of this study was to compare statistically the zooplankton assemblage ingested by brown trout (Salmo trutta) in Loch Ness with that of the zooplankton in the water column.
Grey, Jonathan   +2 more
core  

Why do some fish fight more than others? [PDF]

open access: yes, 2012
Reversible changes in how readily animals fight can be explained in terms of adaptive responses to differences in the costs and benefits of fighting. In contrast, long-term differences in aggressiveness raise a number of questions, including why animals ...
Huntingford, F.   +2 more
core   +1 more source

Quantitative insights into the spatio‐temporal variation of Atlantic salmon (Salmo salar) biomass in a river catchment using eDNA metabarcoding

open access: yesJournal of Fish Biology, EarlyView.
Abstract Effective species conservation and management requires comprehensive biomonitoring, enhanced by combining traditional and newer methodologies, such as environmental DNA (eDNA) analyses. A seasonal pulse of spawning adult Atlantic salmon (Salmo salar) was detected by normalised eDNA 12S reads from metabarcoding, which facilitated estimation of ...
William Bernard Perry   +11 more
wiley   +1 more source

Relationship between the environment and the occurrence of invasive pumpkinseed Lepomis gibbosus in lotic and lentic habitats

open access: yesJournal of Fish Biology, EarlyView.
Abstract The pumpkinseed Lepomis gibbosus is a freshwater fish species native to North America. It has been introduced to Europe, where it is recognized as one of the worst aquatic invaders due to its high adaptability and invasive potential. This study aimed to determine the presence of L. gibbosus in small to medium‐sized water bodies, both lotic and
Ivan Špelić   +2 more
wiley   +1 more source

Home - About - Disclaimer - Privacy