Results 81 to 90 of about 13,138 (208)

Reproductive timing and fecundity in the Neotropical lizard Enyalius perditus (Squamata: Leiosauridae)

open access: yesActa Herpetologica, 2017
Enyalius perditus is a semi-arboreal lizard species whose reproduction is poorly known. Here, we combine information obtained from preserved and live specimens to describe the reproductive timing (vitellogenesis, gravidity, and egg-laying) and fecundity (
Serena Migliore   +3 more
doaj   +1 more source

Perkembangan Oosit Induk Osteochilus Hasselti C.v. yang Diberi Hormon Estradiol-17β dan Pakan dengan Kadar Protein Berbeda [PDF]

open access: yes, 2014
The availability of fish seed is very important in fish propagation. Good quality of fish seeds were produced by a good brooder which characterized a large number of egg production at spawning.
Santo, A. P. (Andri)   +2 more
core   +3 more sources

Plant Virus‐Induced Inheritable Apoptosis Drives Reproductive Costs in Female Insect Vectors to Balance Viral Biparental Transmission

open access: yesAdvanced Science, Volume 13, Issue 5, 27 January 2026.
Rice gall dwarf virus (RGDV), transmitted biparentally by leafhopper vector to their offspring, exploits the capsid protein to induce inheritable ovarian apoptosis via insulin‐driven PI3K/AKT/FoxO signaling axis. This mechanism enhances infection but reduces female reproductive fitness, causing inefficient maternal transmission.
Haibo Wu   +6 more
wiley   +1 more source

The F-box protein FBXL-5 governs vitellogenesis and lipid homeostasis in C. elegans

open access: yesFrontiers in Cell and Developmental Biology
The molecular mechanisms that govern the metabolic commitment to reproduction, which often occurs at the expense of somatic reserves, remain poorly understood.
Peter C. Breen   +5 more
doaj   +1 more source

Histology of the oocytes of Lutjanus peru (Nichols and Murphy, 1922) (Pisces: Lutjanidae)

open access: yesCiencias Marinas, 2001
The distinctive characteristics found in each of the development stages of the oocyte in the ovary of Lutjanus peru (Pacific red snapper) are described.
G Lucano-Ramírez   +3 more
doaj   +1 more source

The Overlooked Threat of Global Warming on Elasmobranch Fertility

open access: yesFish and Fisheries, Volume 27, Issue 1, Page 41-55, January 2026.
ABSTRACT Climate change is increasingly recognised as a critical threat to global biodiversity, yet its impacts on reproductive processes remain poorly understood in many marine taxa. Elasmobranchs (sharks, skates and rays) represent a particularly vulnerable group due to their peculiar life histories, low fecundity, and diverse reproductive modes.
Noémie Coulon   +3 more
wiley   +1 more source

Identification of Female Cod (Gadus morhua) from Flemish Cap (Northwest Atlantic) at the Beginning of Ripening [PDF]

open access: yes, 1993
18 páginas, 3 figuras, 6 tablas.-- Scientific Council MeetingOvaries of cod from Flemish Cap were sampled at three different times during the reproductive cycle.
Cerviño, Santiago   +2 more
core  

The Influence of Eicosapentaenoic Acid on Macrobrachium rosenbergii Broodstock: Ovarian Development, Antioxidant Status, and Lipid Metabolism

open access: yesAquaculture Nutrition, Volume 2026, Issue 1, 2026.
Lipids are essential for crustacean reproduction, supporting broodstock growth and ovarian development. However, studies of n‐3 highly unsaturated fatty acids (HUFAs), particularly eicosapentaenoic acid (EPA), on the growth and ovarian development of prawn broodstock remain limited.
Yuxin Sun   +7 more
wiley   +1 more source

Prey resources before spawning influence gonadal investment of female, but not male, white crappie [PDF]

open access: yes, 2007
In this study, an outdoor pool experiment was used to evaluate the effect of prey resources during 4 months before spawning on the gonadal investments of male and female white crappie Pomoxis annularis, a popular freshwater sportfish that exhibits ...
Bunnell, David B.   +2 more
core   +2 more sources

Optimal Dietary Dunaliella salina Supplementation Enhances Growth, Antioxidant Capacity, Immune Response, Stress Tolerance, and Carotenoid‐Based Pigmentation in Juvenile Red Swamp Crayfish (Procambarus clarkii)

open access: yesAquaculture Nutrition, Volume 2026, Issue 1, 2026.
To meet the growing market demand for high‐quality red swamp crayfish (Procambarus clarkii), nutritional strategies are needed to improve both health and visual traits. The microalga Dunaliella salina, renowned for its rich natural β‐carotene content, presents a promising solution.
Chen Qian   +5 more
wiley   +1 more source

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