Results 91 to 100 of about 42,192 (244)

Histological Insights into Testicular Apoptosis Associated with Spermatogenesis in Pre-Pubertal and Adult Meagre (Argyrosomus regius)

Animals
To overcome reproductive dysfunctions, recombinant gonadotropin hormones have been synthesised in different fish species. We were interested in gaining further insight into the effects of recombinant follicle-stimulating hormone (rFsh) in meagre ...
Gianluca Ventriglia, Neil Duncan, Ignacio Giménez, Constantinos C. Mylonas, Chrysovalentinos Pousis, Caterina Varvara, Luisa Valentini, Letizia Passantino, Aldo Corriero, Rosa Zupa   +9 more
doaj   +1 more source

Influência da espermatogênese e dos níveis de testosterona no aspecto reprodutivo de codornas Spermatogenesis and testosterone levels influence on reproductive aspects of Japanese quails

Revista Brasileira de Zootecnia, 2008
Analisaram-se os níveis de testosterona, o peso corporal, os pesos testiculares relativos e absolutos, a espessura da túnica albugínea, a altura do epitélio germinativo, o diâmetro e o número de figuras de meiose dos túbulos seminíferos dos testículos de
Lizandra Amoroso, Silvana Martinez Baraldi Artoni, Vera Maria Barbosa de Moraes, Dilermano Perecin, Vanessa Sobue Franzo, Patrícia Amoroso   +5 more
doaj   +1 more source

cAMP-Signalling Regulates Gametocyte-Infected Erythrocyte Deformability Required for Malaria Parasite Transmission. [PDF]

, 2015
Blocking Plasmodium falciparum transmission to mosquitoes has been designated a strategic objective in the global agenda of malaria elimination. Transmission is ensured by gametocyte-infected erythrocytes (GIE) that sequester in the bone marrow and at ...
A Dawn, A Heiber, A Merckx, A Pantaleo, A Sudo, AE Bianco, Audrey Lorthiois, Bernina Naissant, C Lavazec, C Lavazec, C Syin, Catherine Lavazec, CJ Taylor, D Yokoyama, DA Baker, David A. Baker, DK Muhia, Dominique Soldati-Favre, Donatella Taramelli, E Farfour, E Lasonder, E Ling, Eloise Thompson, F Hawking, F Silvestrini, F Silvestrini, Florence Breil, Florian Dupuy, G Deplaine, Ghania Ramdani, Gordon Langsley, HM Taylor, I Koshino, J Bain, K Leykauf, Kenneth Vernick, KM Tang, L Chen, L McRobert, L Wentzinger, LK Read, M Aingaran, M Boolell, M Hliscs, M Tiburcio, M Tiburcio, ME Smalley, MJ Lopez-Barragan, MK Dearnley, MW Dixon, N Goto, N Mohandas, Odile Mercereau-Puijalon, QL Fivelman, R Aguilar, R Joice, RE Sinden, RE Sinden, RL Coppel, Ross Cummings, RW Moon, S D'Alessandro, S Kunz, S Sanyal, SM Knebel, SP Davies, SP Kim, T Bousema, T Harrison, T Ono, T Seebeck, W Trager, WB Smith 2nd, Yoann Duffier, Yolanda Corbett   +74 more
core   +9 more sources

New insights into the putative XX/XY sex chromosomal system in blue‐eyed red‐fin pleco Hypostomus soniae (Siluriformes, Loricariidae)

Journal of Fish Biology, EarlyView.
Abstract Blue‐eyed red‐fin pleco Hypostomus soniae (family Loricariidae) presented a putative sex system XX/XY in early stage. Aiming to explore the inter‐populational karyotypic variation and proposed emergence of the XX/XY system, we studied 13 H. soniae individuals (6 males, 7 females) from the Tapajós River.
Luan Aércio Melo Maciel, Renata Coelho Rodrigues Noronha, Bruno Rafael Ribeiro de Almeida, Manoella Gemaque Cavalcante, Cleusa Yoshiko Nagamachi, Julio Cesar Pieczarka, Luís Reginaldo R. Rodrigues   +6 more
wiley   +1 more source

Proteomic analysis of the zone of degeneration at the mitosis–meiosis transition stage in wild‐caught male catshark (Scyliorhinus canicula), correlated with an unusually high‐water temperature in the English Channel

Journal of Fish Biology, EarlyView.
Abstract In the context of current global change, variations in water temperature are one of the environmental conditions with serious consequences for marine life, including reproductive processes. In the small spotted catshark Scyliorhinus canicula, spermatogenesis occurs in spermatocysts composed of synchronously developing germ cells associated ...
Fabian Jeanne, Stanislas Pilet, Sean Heighton, Benoît Bernay, Pascal Sourdaine   +4 more
wiley   +1 more source

Programmed Genome Elimination Is Evolutionarily Conserved Across Pelophylax Hybrids—As Evidenced by P. grafi Hybridogenetic Reproduction

Biology
Gametogenesis is a fundamental biological process that ensures both genetic recombination and the continuity of successive generations. Interspecific hybrids can reproduce through modified mechanisms, such as hybridogenesis, by transmitting clonal ...
Anna Dudzik, Beata Rozenblut-Kościsty, Dmitrij Dedukh, Pierre-André Crochet, Lukáš Choleva, Monika Przewłocka-Kosmala, Zuzanna Stryczak, Maria Ogielska, Magdalena Chmielewska   +8 more
doaj   +1 more source

Biological aspects and population dynamics of the European pilchard Sardina pilchardus (Walbaum, 1792) in the southeastern Mediterranean waters

Journal of Fish Biology, EarlyView.
Abstract The European pilchard, Sardina pilchardus, is a key small pelagic fish sustaining Mediterranean ecosystems and fisheries. This study represents the first comprehensive biological and population dynamics assessment of the European pilchard by applying the length‐based spawning potential ratio (LB‐SPR) approach to S.
Mohab Badreldin, Reda M. Fahim, Lafi Al Solami, Hatem H. Mahmoud   +3 more
wiley   +1 more source

The full-length BEND2 protein is dispensable for spermatogenesis but required for setting the ovarian reserve in mice

eLife
Infertility affects up to 12% of couples globally, with genetic factors contributing to nearly half of the cases. Advances in genomic technologies have led to the discovery of genes like Bend2, which play a crucial role in gametogenesis.
Yan Huang, Nina Bucevic, Carmen Coves, Natalia Felipe-Medina, Marina Marcet-Ortega, Nikoleta Nikou, Cristina Madrid-Sandín, Maria López-Panadés, Carolina Buza, Neus Ferrer Miralles, Antoni Iborra, Anna Pujol, Alberto M Pendás, Ignasi Roig   +13 more
doaj   +1 more source

Environmental stress and parasitism as drivers of population dynamics of Mesodesma donacium at its northern biogeographic range [PDF]

, 2011
Riascos, J. M., Heilmayer, O., Oliva, M. E., and Laudien, J. 2011. Environmental stress and parasitism as drivers of population dynamics of Mesodesma donacium at its northern biogeographic range. – ICES Journal of Marine Science, 68: 823–833.
Heilmayer, Olaf, Laudien, Jürgen, Oliva, M. E., Riascos, José   +3 more
core   +1 more source

Intra‐annual energy density cycles of spring‐ and fall‐spawning Atlantic herring Clupea harengus reveal different reproductive allocation tactics

Journal of Fish Biology, EarlyView.
Abstract Atlantic herring Clupea harengus are total spawners that exhibit a large degree of reproductive plasticity and have substantial intra‐annual variation in their energetic condition. Recent research suggests that the species may be declining in energetic condition in the northwest Atlantic Ocean from the few historical records, but comparisons ...
Joseph B. Warren, Mark J. Wuenschel, Kenneth Oliveira   +2 more
wiley   +1 more source