Results 41 to 50 of about 4,193 (178)

High thermal plasticity, low heritability and constant directional selection on breeding phenology in a viviparous ectotherm

Journal of Animal Ecology, EarlyView.
Our findings reveal that breeding phenology of the common lizard is shaped by strong thermal plasticity, body size effects, constant selection for earlier parturition, but low heritability. This suggests that phenological responses to climate change in this species, and likely in other squamates, will predominantly arise through plastic rather than ...
Théo Bodineau, Alexis Rutschmann, Jean‐François Le Galliard, Manuel Massot, Murielle Richard, Jean Clobert, Sandrine Meylan, Pierre de Villemereuil   +7 more
wiley   +1 more source

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

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

Vitellogenesis in Manduca sexta [PDF]

Memórias do Instituto Oswaldo Cruz, 1987
Eggs of Manduca sexta contain four well-characterized protein derived from hemolymph: vitellogenin and lipophorin (very high density lipoproteins); microvitellogenin, a 26,000 dalton female-specific protein lacking lipid and carbohydrate, and insecticyanin, a blue biliprotein composed of four identical 22,000 dalton subunits.
Kawooya, John K., Osir, Ellie O., Law, John H.   +2 more
openaire   +3 more sources

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

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

Weaponry Investment in the Socially Monogamous Snapping Shrimp Alpheus brasileiro (Decapoda: Alpheidae)

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, Caio Santos Nogueira, Régis Augusto Pescinelli, Rogerio Caetano Costa   +3 more
wiley   +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

Compromised DNA replication in gut cells underlies sensitivity to genotoxic stress in the tardigrade Hypsibius exemplaris

The FEBS Journal, EarlyView.
DNA damage in the tardigrade Hypsibius exemplaris elicits distinct cellular outcomes depending on replication status. While non‐replicating cells tolerate genotoxic stress, constitutively replicating cells undergo irreversible replication failure upon DNA damage, leading to loss of tissue homeostasis, fat depletion, sterility, and organismal death ...
Gonzalo Quiroga‐Artigas, Pauline Fontanié, Benjamin Lacroix, Maria Dolores Molina, María Moriel‐Carretero   +4 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