Results 41 to 50 of about 4,036 (162)
Diversity, 2021 The major component of the animal egg yolk is the lipoglycoprotein vitellin, derived from its precursor vitellogenin (VTG), which is produced species-specifically in decapod crustaceans in the hepatopancreas and/or in the ovary of reproductive females ...
Chiara Manfrin +5 more
doaj +1 more source
Acta Zoologica, EarlyView.ABSTRACT Weapons are morphological structures used by animals in various contexts, especially in intra‐specific contests and visual displays. In snapping shrimps of the genus Alpheus, particularly the monogamous species Alpheus brasileiro, both sexes bear enlarged chelipeds, potentially conferring advantages in mate competition or territorial defence ...
Leonardo Moreira +3 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 +3 more
doaj +1 more source
Fisheries Management and Ecology, EarlyView.ABSTRACT Greenland halibut (Reinhardtius hippoglossoides) is a deep‐water flatfish which lives at temperatures of 1°C–4°C and produces large eggs (> 3 mm). The combination of low temperatures and large eggs has resulted in an unusual ovary development cycle, with vitellogenesis taking more than 1 year.
James Kennedy +3 more
wiley +1 more source
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 +5 more
doaj +1 more source
Endocrine Regulation of Maturation and Sex Change in Groupers
Cells, 2022 Groupers are widely distributed in tropical and subtropical areas worldwide, are key species to coastal ecosystems, and valuable fishery targets. To facilitate artificial seed production technology for grouper aquaculture, the mechanisms of reproduction ...
Kiyoshi Soyano +6 more
doaj +1 more source
Journal of Fish Biology, EarlyView.Abstract Yellowstone cutthroat trout Oncorhynchus virginalis bouvieri in Yellowstone Lake are the focus of intensive conservation efforts due to the threat of predation by invasive lake trout Salvelinus namaycush. Suppression gillnetting has reduced the abundance of predatory lake trout, and the Yellowstone cutthroat trout population is recovering ...
Michelle A. Briggs +3 more
wiley +1 more source
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 +3 more
doaj +1 more source
PLoS ONE, 2020 The life cycle of European eel (Anguilla anguilla), a catadromous species, is complex and enigmatic. In nature, during the silvering process prior to their long spawning migration, reproductive development is arrested, and they cease feeding.
Francesca Bertolini +4 more
doaj +1 more source
Frontiers in Endocrinology, 2020 Vitellogenesis in crustaceans is an energy-consuming process. Though the underlying mechanisms of ovarian maturation in decapod Crustacea are still unclear, evidence indicates the process to be regulated by antagonistically-acting inhibitory and ...
Vidya Jayasankar +2 more
doaj +1 more source