Results 21 to 30 of about 33,233 (205)

Deciphering the morphological variation and its ontogenetic dynamics in the Late Devonian conodont Icriodus alternatus [PDF]

open access: yesFossil Record, 2022
Identification of relevant taxonomic and evolutionary units is a recurrent issue in the fossil record, and all the more for ancient fossils devoid of modern equivalents such as conodonts. Extensive morphological variation has often led to the description
Catherine Girard   +4 more
doaj   +3 more sources

Early ontogeny of tetra Markiana nigripinnis (Characiformes: Characidae) [PDF]

open access: yesNeotropical Ichthyology, 2023
The early development of Markiana nigripinnis is described by morphological characters, pigmentation, and morphometry. Larvae were obtained through semi-natural breeding, collected, fixed, and identified according to their development. Eighty individuals
Mateus Babichi Veiga de Souza   +3 more
doaj   +1 more source

Year-Round Spawning, Filial Cannibalism, and Embryonic and Larval Development of the Coral Reef Fish Orchid Dottyback, Pseudochromis fridmani

open access: yesFishes, 2023
Aquaculture of marine ornamental fish could potentially reduce the fishing pressure on wild stocks by the global aquarium trade, but its expansion is often constrained by the limited understanding on the biology and early life history of candidate ...
Jun Yu Chen   +2 more
doaj   +1 more source

The ontogeny of early language discrimination: Beyond rhythm

open access: yesCognition, 2021
Infants can discriminate languages that belong to different rhythmic classes at birth. The ability to perform within-class discrimination emerges around the fifth month of life. The cues that infants use to discriminate between prosodically close languages remain elusive.
Zacharaki, Konstantina   +1 more
openaire   +3 more sources

Effects of praziquantel on common carp embryos and larvae

open access: yesScientific Reports, 2022
This study aimed to assess the toxicity of praziquantel (anthelmintic drug) in different developmental stages of common carp (Cyprinus carpio) based on mortality, early ontogeny, growth, oxidative stress, antioxidant enzymes, histology and behaviour ...
Josef Velisek   +4 more
doaj   +1 more source

Skeletal ontogeny of the caudal complex in Caspian kutum, Rutilus kutum (Kamensky, 1901) (Teleostei: Cyprinidae) during early development [PDF]

open access: yesCaspian Journal of Environmental Sciences, 2019
Study of skeletal ontogeny during early development is crucial in a successful larviculture. In this study, ontogeny of the caudal complex skeleton in Caspian kutum, Rutilus kutum, was studied from hatching up to 50-day post hatching (dph).
P Farhang, S Eagderi
doaj   +1 more source

Early development and growth of sterlet (Acipenser ruthenus) in the Czech Republic

open access: yesActa Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 2011
Growth rate of sterlet larvae and juveniles during 2008 and 2009 was studied under experimental and farming conditions in the Czech Republic. The embryos hatched when reaching a mean total length (TL) of 9.0 mm.
Juraj Rybnikár   +3 more
doaj   +1 more source

The ontogeny of memory persistence and specificity

open access: yesDevelopmental Cognitive Neuroscience, 2019
Interest in the ontogeny of memory blossomed in the twentieth century following the initial observations that memories from infancy and early childhood are rapidly forgotten.
Adam I. Ramsaran   +2 more
doaj   +1 more source

The Early Ontogeny of Social Norms

open access: yesChild Development Perspectives, 2013
Abstract Recent research has produced new insights into the early development of social cognition and social learning. Even very young children learn and understand social activities as governed by conventional norms that (a) are arbitrary and shared by the community, (b) have normative force and apply to all participants, and (c) are
Rakoczy, H.   +1 more
openaire   +3 more sources

Artificial Rearing of Atlantic Salmon Juveniles for Supportive Breeding Programs Induces Long-Term Effects on Gut Microbiota after Stocking

open access: yesMicroorganisms, 2021
In supportive breeding programs for wild salmon populations, stocked parr experience higher mortality rates than wild ones. Among other aspects of phenotype, the gut microbiota of artificially raised parr differs from that of wild parr before stocking ...
Camille Lavoie   +4 more
doaj   +1 more source

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