Results 61 to 70 of about 6,694 (212)

Histological characterisation of gonadal sex differentiation in Malabar red snapper (Lutjanus malabaricus) for aquaculture advancement

Journal of Fish Biology, EarlyView.
Abstract The Malabar red snapper (Lutjanus malabaricus) is a high‐value tropical marine species receiving growing attention for aquaculture development in Singapore and Southeast Asia. At present, seed production relies primarily on uncontrolled mass spawning in sea cages, a practice that lacks consistency, biosecurity and control of genetic ...
Bing Liang, Dean R. Jerry, Joyce Koh, Purushothaman Kathiresan, Celestine Terence, Xueyan Shen, Grace Loo, Shubha Vij, Jose A. Domingos   +8 more
wiley   +1 more source

Vitellogenin Receptor as a Target for Tick Control: A Mini-Review

Frontiers in Physiology, 2019
While much effort has been put into understanding vitellogenesis in insects and other organisms, much less is known of this process in ticks. There are several steps that facilitate yolk formation in developing oocytes of which the vitellogenin receptor (
Robert D. Mitchell, Daniel E. Sonenshine, Daniel E. Sonenshine, Adalberto A. Pérez de León   +3 more
doaj   +1 more source

Chronic thermal stress affects growth, liver morphology and molecular responses but allows recovery at optimal temperature in juvenile zebrafish (Danio rerio)

Journal of Fish Biology, EarlyView.
Abstract Climate‐driven aquatic heatwaves pose an increasing threat to fish populations by inducing prolonged thermal stress. However, the resilience of teleosts to chronic heat exposure and their capacity for recovery remains poorly understood. This study investigated the effects of chronic high‐temperature exposure on juvenile zebrafish (Danio rerio).
Monique Adzijovski, Aaron G. Schultz, Jemma Bergfeld, Luis O. B. Afonso   +3 more
wiley   +1 more source

Vitellogenesis and senescence in Caenorhabditis elegans [PDF]

, 2019
Advancing age comes with an increasing risk of developing multiple diseases. For example, a prominent pathology in ageing C. elegans hermaphrodites is the ectopic deposition of yolk in the pseudocoelom.
Sornda, Thanet
core  

A framework for using tissue chemistry and biochronologies to reconstruct fish habitat use and growth

Ecological Solutions and Evidence, Volume 7, Issue 3, July–September 2026.
Caption to use for Graphical Abstract (if caption not provided with separate file): A novel and accessible framework for using chemical tracers in fish tissues for addressing ecological questions, with a primary focus on habitat use and movement reconstruction.
Peter Betts, Tor F. Næsje, Eoin J. O'Gorman, Rachel A. Paterson, Astrid M. Tonstad, Coralie Moccetti, Anna M. Sturrock   +6 more
wiley   +1 more source

Ultrastructural aspects of vitellogenesis in Archegozetes longisetosus Aoki, 1965 (Acari, Oribatida, Trhypochthoniidae)

Soil Organisms, 2010
We studied the process of vitellogenesis in the oribatid mite Archegozetes longisetosus using light and electron microscopy. Both vitellogenesis and the formation of the first egg shell occur within the meroi of the ovary, starting after detachment from
Paavo Bergmann, Michael Laumann, Michael Heethoff   +2 more
doaj  

The archaeal class Nitrososphaeria is a key component of the reproductive microbiome in sponges during gametogenesis

mBio
Sponge-associated microbes play fundamental roles in regulating their hosts’ physiology, yet their contribution to sexual reproduction has been largely overlooked.
Marta Turon, Vasiliki Koutsouveli, María Conejero, Sergi Taboada, Aida Verdes, José María Lorente-Sorolla, Cristina Díez-Vives, Ana Riesgo   +7 more
doaj   +1 more source

Characterization of a native whitefly vitellogenin gene cDNA and its expression pattern compared with two invasive whitefly cryptic species

Journal of Integrative Agriculture, 2016
The whitefly Bemisia tabaci is a species complex, of which two invasive species, called MEAM1 and MED whiteflies, have invaded many parts of the world in the past 30 years and replaced native whitefly populations in many regions of invasions including ...
Jian-yang GUO, Yu-ping DU, Fang-hao WAN, Gong-yin YE   +3 more
doaj   +1 more source

Functional ultrastructure and cytochemistry of vitellogenesis and mature vitellocytes of the digenean Cainocreadium labracis (Dujardin, 1845), parasite of Dicentrarchus labrax (L., 1758) [PDF]

, 2020
Vitellogenesis and vitellocytes of Cainocreadium labracis were studied by transmission electron microscopy (TEM) and TEM cytochemistry. Four developmental stages were distinguished during vitellogenesis: (I) stem cell of high nucleo-cytoplasmic ratio ...
Miquel Colomé, Jordi, Swiderski, Zdzislaw, Mackiewicz, John S., Kacem, Hichem   +3 more
core   +1 more source

Transcriptomic Analysis of the Kuruma Prawn Marsupenaeus japonicus Reveals Possible Peripheral Regulation of the Ovary

Frontiers in Endocrinology, 2020
Crustacean reproduction has been hypothesized to be under complex endocrinological regulation by peptide hormones. To further improve our understanding of the mechanisms underlying this complex regulation, knowledge is needed regarding the hormones not ...
Naoaki Tsutsui, Naoaki Tsutsui, Yasuhisa Kobayashi, Yasuhisa Kobayashi, Kouichi Izumikawa, Tatsuya Sakamoto   +5 more
doaj   +1 more source