Results 31 to 40 of about 4,359 (190)

Transgenerational Heat Exposure Triggers Unexpected Compensatory Sex Ratio Responses in a Temperature-Sensitive Fish Under Climate Warming. [PDF]

Glob Chang Biol
Rising temperatures can unbalance the number of males and females in species whose sex is influenced by the environment. In a decade‐long experiment with European sea bass, we found that heat during development produces more males, but the thermal history of parents—especially fathers—can unexpectedly push offspring sex ratios back in the opposite ...
Ecker-Eckhofen G, Beato S, da Silva Rodrigues M, Segura-Noguera M, Nóbrega RH, Allal F, Vandeputte M, Piferrer F.   +7 more
europepmc   +2 more sources

Machine learning models accurately predict clades of proteocephalidean tapeworms (Onchoproteocephalidea) based on host and biogeographical data. [PDF]

Cladistics
Abstract Proteocephalids are a cosmopolitan and diverse group of tapeworms (Cestoda) that have colonized vertebrate hosts in freshwater and terrestrial environments. Despite the ubiquity of the group, key macroevolutionary processes that have driven the group's evolution have yet to be identified.
Vieira Alves P, da Silva RJ, Scholz T, de Chambrier A, Luque JL, Duchenko A, Janies D, Jacob Machado D.   +7 more
europepmc   +2 more sources

Molecular parallelism in the evolution of a master sex‐determining role for the anti‐Mullerian hormone receptor 2 gene (amhr2) in Midas cichlids

Molecular Ecology, Volume 32, Issue 6, Page 1398-1410, March 2023., 2023
Abstract The evolution of sex chromosomes and their differentiation from autosomes is a major event during genome evolution that happened many times in several lineages. The repeated evolution and lability of sex‐determination mechanisms in fishes makes this a well‐suited system to test for general patterns in evolution.
Camila L. Nacif, Claudius F. Kratochwil, Andreas F. Kautt, Alexander Nater, Gonzalo Machado‐Schiaffino, Axel Meyer, Frederico Henning   +6 more
wiley   +1 more source

Early Nutritional Programing: Unlocking the Potential of Fish for Sustainable Aquaculture. [PDF]

Aquac Nutr
Nutritional programing, which explores the link between early nutritional conditions and their long‐term effects on animals, is a developing field within fish biology. Suboptimal nutritional status during early life is strongly associated with a higher risk of metabolic consequences later in life, including permanent growth retardation, impaired neural
Kumar S, Banik A, Dubey MK, Srivastava PP, Sandor ZJ.   +4 more
europepmc   +2 more sources

Glycoproteins histochemistry of the gills of Odontesthes bonariensis (Teleostei, Atherinopsidae)

Journal of Fish Biology, 2010
The histochemistry of glycoproteins (GP) in the mucous cells of the gills of the silverside Odontesthes bonariensis was identified with: (1) oxidizable vicinal diols; (2) sialic acid and some of their chain variants, carbon 7 (7C), carbon 8 (8C) or carbon 9 (9C); (3) sialic acid residues without O‐acyl substitution and with O‐acyl substitution at 7C ...
Díaz, Alcira Ofelia, García, A.M., Escalante, Alicia Haydee, Goldemberg, A.L.   +3 more
openaire   +3 more sources

Survival of embryos of pejerrey Odontesthes bonariensis and Odontesthes humensis at different concentration of salinity [PDF]

Biotemas, 2009
Embryos of Odontesthes bonariensis and Odontesthes humensis were submitted to saline concentrations of 0, 5, 10, 20 and 30g.L-1. The control of mortality was made daily between the 8th and 12th days of incubation, at the which time the embryos had ...
Sérgio Renato Noguez Piedras, Juvêncio Luís Osório Fernandes, Isadora Sobral Motoyama, Gabriel Bernardes Martins   +3 more
doaj  

Development of sperm cryopreservation techniques in pejerrey Odontesthes bonariensis

Aquaculture, 2010
Abstract The pejerrey, Odontesthes bonariensis, is being considered for aquaculture due to its high demand and market price. Reproduction and larviculture studies have demonstrated the feasibility of massive fingerling production, and techniques that prolong life and increase gamete viability can assist in the culture development of this species.
Lichtenstein, Gabriel, Elisio, Mariano, Miranda, Leandro Andres   +2 more
openaire   +2 more sources

Germ cell transplantation using sexually competent fish: an approach for rapid propagation of endangered and valuable germlines. [PDF]

PLoS ONE, 2009
The transplantation of germ cells into adult recipient gonads is a tool with wide applications in animal breeding and conservation of valuable and/or endangered species; it also provides a means for basic studies involving germ cell (GC) proliferation ...
Sullip K Majhi, Ricardo S Hattori, Masashi Yokota, Seiichi Watanabe, Carlos A Strüssmann   +4 more
doaj   +1 more source

Guía para la obtención de alevinos de pejerrey Odontesthes bonariensis en condiciones de laboratorio

, 2021
Esta sede del Imarpe viene realizando estudios sobre el cultivo de pejerrey Odontesthes bonariensis en condiciones de laboratorio, hasta la obtención de alevinos. El propósito de la investigación es lograr el desarrollo de nuevos sistemas productivos y
Amaru Chambilla, Glicerio R., Yujra Flores, Ernesto   +1 more
core  

Requirement of the main amino acids for fingerlings pejerrey (Odontesthes bonariensis)

, 2013
The pejerrey Odontesthes bonariensis is a kind of great importance in artisanal fishing in southern Rio Grande do Sul, but on the face of fishing in this region is diminishing fisheries resource.
Cavalheiro, Anna Carolina Miranda
core   +3 more sources