Results 41 to 50 of about 1,828 (138)

Egg retention and intrauterine embryonic development in Sceloporus aeneus (Reptilia: Phrynosomatidae): implications for the evolution of viviparity

Revista Mexicana de Biodiversidad, 2012
Egg retention (ER) and intrauterine embryonic development (IED) have been considered intermediate steps in the evolution from oviparity to viviparity. Sceloporus aeneus is an oviparous lizard that is closely related to the viviparous species (Sceloporus ...
Rodolfo García-Collazo, Maricela Villagrán-Santa Cruz, Eduardo Morales-Guillaumin, Rubi Nelsi Meza-Lázaro, Fausto R. Méndez-de la Cruz   +4 more
doaj   +1 more source

Low microbial abundance and community diversity in the egg capsule of the oviparous cloudy catshark (Scyliorhinus torazame) during oviposition. [PDF]

Environ Microbiol Rep
This research reveals that embryos of the oviparous cloudy catshark (Scyliorhinus torazame) acquire pathogen resistance by Stage 30. The intracapsular environment of freshly laid eggs exhibits low microbial abundance and diversity. This clean environment persists until the early opening of the capsule, suggesting its critical role in protecting ...
Takagi W, Masuda A, Shimoyama K, Tokunaga K, Hyodo S, Sato-Takabe Y.   +5 more
europepmc   +2 more sources

Liochlorophis, L. vernalis [PDF]

, 2003
Number of Pages: 13Integrative BiologyGeological ...
Walley, Harlan D.
core   +1 more source

Decoding Dual Regulatory Layers: Integrating Differential Expression and Alternative Splicing Dynamics in the Evolution of Laryngeal Echolocation Across Chiropteran Lineages

Integrative Zoology, EarlyView.
We integrated short‐read and long‐read RNA‐seq data from cochlear tissues of echolocating and non‐echolocating bats to disentangle transcriptional and post‐transcriptional regulation. Echolocating bats showed neural‐function enrichment among differentially expressed genes, while alternatively spliced genes were linked to epigenetic regulation. Overlaps
Jianyu Wu, Daoyuan Hu, Min Chen, Xiuguang Mao   +3 more
wiley   +1 more source

Effect of different feeds and water salinities on the cyst production of brine shrimp, Artemia sp. [PDF]

, 2002
Effect of different feeds and salinities on cyst production in Artemia sp. was studied. Among the 12 different feeds used, ragi powder suspension showed the best growth and cyst production.
Joshi, V.P., Vartak, V.R.
core  

Developmental expression of Ap‐Vas proteins in aphids and flies reveals their evolutionary roles in insects

Insect Molecular Biology, EarlyView.
Duplication of vas genes is universally observed in aphids, and phylogenetic analysis indicates that this event predates the divergence of Aphididae and Phylloxeridae. Ap‐vas1 is germline‐specific, whereas Ap‐vas2–4 exhibit somatic expression, indicating functional divergence during aphid embryogenesis.
Gee‐Way Lin, Szu‐Chieh Wang, Charles E. Cook, Ming‐Der Lin, Chun‐che Chang   +4 more
wiley   +1 more source

Clinal Variation in Reproductive Modes and Offspring Body Condition Across a Contact Zone of a Bimodal Viviparous Salamander

Ecology and Evolution, Volume 16, Issue 3, March 2026.
We examined clinal gradients in reproductive modes and associated offspring body condition across a hybrid zone between two bimodal viviparous subspecies of Salamandra salamandra. We found a clear cline in reproductive modes, with pure modes at the extremes and mixed modes in central populations.
Clara Figueiredo‐Vázquez, Lucía Alarcón‐Ríos, Guillermo Velo‐Antón   +2 more
wiley   +1 more source

Early life sensory ability—ventilatory responses of thornback ray embryos (Raja clavata) to predator-type electric fields [PDF]

, 2015
Predator avoidance is fundamental for survival and it can be particularly challenging for prey animals if physical movement away from a predatory threat is restricted. Many sharks and rays begin life within an egg capsule that is attached to the sea bed.
Ballard, Bedore, Bigelow, Bodznick, Clark, Cousseau, Cox, Dulvy, Dulvy, Evans, Foulley, Freitas, Gannon, Giguère, Gill, Herskin, Hoff, Kempster, Kimber, Leonard, Long, Lucifora, Luer, Martin, Moore, Oulton, Peters, Post, Richards, Semeniuk, Semeniuk, Sih, Sisneros, Thomason, Tricas, Venables, Warkentin, Warkentin   +37 more
core   +1 more source

Highly localised morphological diversity in the mayfly Cloeon tasmaniae Tillyard (Ephemeroptera; Baetidae), and a new synonomy with C. paradieniense Suter

Austral Entomology, Volume 65, Issue 1, February 2026.
Abstract Ambiguity over the features that differentiate two nominal species of baetid mayflies, Cloeon paradieniense Suter and C. tasmaniae Tillyard, in southeast Australia led to a detailed analysis of the morphology and meristics of specimens from Victoria, South Australia and, in particular, Tasmania, where both species have been reported.
Ronald E. Thresher, Phillip J. Suter
wiley   +1 more source

The Overlooked Threat of Global Warming on Elasmobranch Fertility

Fish 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, Eric Feunteun, Alexandre Carpentier, Anne Lizé   +3 more
wiley   +1 more source