Results 31 to 40 of about 4,036 (162)

Ovarian follicular cycle of Tropidurus hispidus and Tropidurus semitaeniatus (Squamata: Tropiduridae) in a semiarid region of Brazil

Zoologia (Curitiba), 2015
The reproductive cycle of Squamata reptiles is often associated with environmental conditions, such as rainfall. In this respect, seasonal variations may affect the morphology of the ovarian follicles, which are associated with vitellogenesis.
Hellen S. Santos, Jamile M.S. Santos, Maria H.T. Matos, Naisandra B. Silva, Eliza M.X. Freire, Leonardo B. Ribeiro   +5 more
doaj   +1 more source

Juvenile hormone‐mediated accelerated post‐flight recovery of ovarian development in Loxostege sticticalis (Lepidoptera: Crambidae)

New Plant Protection, EarlyView.
Flight in female beet webworms (Loxostege sticticalis) promotes an increase in feeding, thereby enhancing abdominal energy reserves. Following flight, the flight muscles undergo accelerated histolysis, and the energy substances undergoing histolysis are redirected to the ovaries. These two processes collectively promote ovarian development.
Yu Gao, Yunxia Cheng, Wenyi Song, Lei Zhang, Dianjie Xie, Xingfu Jiang   +5 more
wiley   +1 more source

Nuclear Receptors in Mosquito Vitellogenesis [PDF]

American Zoologist, 1999
Synopsis. Vitellogenesis in insects involves the coordinated activity of the fat body, which produces large amounts of yolk protein precursors (YP), and oocytes, which specifically accumulate these proteins. The expression of YP genes is achieved through strict sex-, tissue-, and hormone-specific control in the female fat body.
ALEXANDER S. RAIKHEL, KEN MIURA, WILLIAM A. SEGRAVES   +2 more
openaire   +1 more source

From flower buds to bolls: how cotton reproductive structures shape boll weevil development, reproduction and survival

Pest Management Science, EarlyView.
Female boll weevils feeding on flower buds promote reproduction regardless of their immature diet, whereas boll feeding increases lipid reserves and lifespan, revealing a nutrition‐driven trade‐off that sustains survival and reproduction in tropical boll weevil populations.
Roberta Ramos Coelho, Guilherme Gomes Rolim, Franklin Magliano da Cunha, Valéria Wanderley‐Teixeira, José Dijair Antonino, Jorge Braz Torres   +5 more
wiley   +1 more source

Inhibitory Role of the Mud Crab Short Neuropeptide F in Vitellogenesis and Oocyte Maturation via Autocrine/Paracrine Signaling

Frontiers in Endocrinology, 2018
Neuropeptides, in addition to their classical role in the nervous system, act on intraovarian factors to regulate reproductive functions in vertebrates. However, this function of neuropeptides has not been characterized in crustaceans. Short neuropeptide
Chenchang Bao, Yanan Yang, Huiyang Huang, Haihui Ye, Haihui Ye   +4 more
doaj   +1 more source

Full-Length Transcriptome Sequencing and Comparative Transcriptomic Analysis Provide Insights Into the Ovarian Maturation of Exopalaemon carinicauda

Frontiers in Marine Science, 2022
The ridgetail white shrimp Exopalaemon carinicauda has the potential to be used as a useful experimental organism in the field of crustacean research due to its transparent body, large egg, and short reproductive cycle. However, little is known about the
Jiajia Wang, Jiajia Wang, Jitao Li, Jitao Li, Qianqian Ge, Wenyang Li, Jian Li, Jian Li   +7 more
doaj   +1 more source

A multi‐trait evaluation of patterns and fitness consequences of breeding phenology plasticity with nocturnal warming and food restriction in a lizard

Functional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Faced with climate warming, ectothermic species shift their breeding phenology, which is in part attributed to an acceleration of gestation or incubation in warmer environments.
Théo Bodineau, Pierre de Villemereuil, Baptiste Lemaire, Simon Agostini, Beatriz Decencière, Matéo Millet, Sandrine Meylan, Jean‐François Le Galliard   +7 more
wiley   +1 more source

Effect of dietary cholesterol on ovarian development of Chinese mitten crabs (Eriocheir sinensis)

Frontiers in Marine Science, 2022
This study was conducted to evaluate the effect of cholesterol (CHO) on ovarian development of Eriocheir sinensis through a feeding trial. Crabs (average weight 43.35 ± 0.05 g) were randomly fed with one of three diets: 0% CHO, 0.4% CHO and 1.6% CHO for ...
Huixing Guo, Mangmang Wang, Xi Wang, Kang Xiao, Yangyang Huang, Haokun Hua, Wei Xiong, Wenbin Liu, Kenneth Prudence Abasubong, Wei Qiang, Cheng Chi, Guangzhen Jiang   +11 more
doaj   +1 more source

Calcitonin‐like diuretic hormone influences reproduction in adult female Rhodnius prolixus

Insect Science, EarlyView.
Highlights • CT/DH‐like immunoreactivity is present in female reproductive tissues • CT/DH receptor transcripts are expressed in the fat body and ovaries • RNAi knockdown of CT/DH receptors reduces egg number and hatching rate • Rhopr‐CT/DH increases RhoprVg1 and RhoprVgR expression in ovaries in vitro • Rhopr‐CT/DH stimulates oviduct contractions in a
Areej N. Al‐Dailami, Ian Orchard, Angela B. Lange   +2 more
wiley   +1 more source

LsFAMeT and LsJHAMT coordinate JH biosynthesis to regulate fecundity in Laodelphax striatellus

Insect Science, EarlyView.
The small brown planthopper (SBPH), Laodelphax striatellus, can trigger large‐scale outbreaks when encountering suitable habitats during migration due to their strong reproductive ability. This study investigated the role of juvenile hormone (JH) in regulating SBPH reproduction.
Yan Guo, Bing‐Bing Shi, Xue‐Qi Zhang, Qiong Yang   +3 more
wiley   +1 more source