Effects of Salinity on the Reproductive and Lifespan Traits of Artemia Parthenogenetic Lineages with Different Ploidy Levels [PDF]
BiologyAlthough previous studies have investigated the reproductive (performance and mode) and lifespan traits of parthenogenetic Artemia, ploidy level has not been considered.
Alireza Asem +6 more
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Combined effects of temperature, photoperiod, and salinity on reproduction of the brine shrimp Artemia sinica (Crustacea: Anostraca) [PDF]
PeerJ, 2023 Background Artemia sinica is a brine shrimp species distributed in hypersaline salt lakes in northern China and Siberia and a successful invasive species in some coastal salterns. Although it is a commercially harvested and cultured species, knowledge of
Jing-Yu Yang, Shi-Chun Sun
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Correlation of Morphology and Metabolism of Reproductive Traits in the Genus <i>Phrynocephalus</i> Around the Qinghai-Tibetan Plateau. [PDF]
Ecol EvolWe explored the correlation of maternal morphology, metabolism, and reproductive traits in 10 Phrynocephalus lizards around the Qinghai‐Tibetan Plateau. We found that oviparous and viviparous lizards did not differ in their reproductive traits. Phrynocephalus lizards with greater snout‐vent length and higher standard metabolic rates tended to produce ...
Tao X, Xie F, Zhu L, Wu Q.
europepmc +2 more sources
Two's company: Monozygotic twinning in the small-spotted catshark (Scyliorhinus canicula). [PDF]
J Fish BiolAbstract Developmental abnormalities in elasmobranchs (sharks and rays) are rarely documented, with reported cases primarily involving fin or cranial deformities. Monozygotic twinning, the formation of identical twins from a single zygote, is particularly rare in these species and has been observed overwhelmingly in viviparous elasmobranchs.
Gajić AA +6 more
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Higher locomotor costs of pregnancy in viviparous compared to oviparous common lizards (Zootoca vivipara) [PDF]
Ecology and EvolutionPregnancy is a physiological cost of reproduction for animals that rely on fleeing to avoid predators. Costs of reproduction are predicted to differ between alternative reproductive strategies or modes, such as egg‐laying (oviparity) or live‐bearing ...
Robert Hussain +2 more
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The first non-mammalian synapsid embryo from the Triassic of South Africa. [PDF]
PLoS ONEOviparity was likely the plesiomorphic reproductive condition for non-mammalian Synapsida, the stem-mammal group. Yet, despite nearly two centuries of research, no definitive fossil eggs of late Palaeozoic or early Mesozoic synapsids have been discovered.
Julien Benoit +2 more
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The adaptability of facultative parthenogenesis and ‘multiple embryos per eggcase’ as alternative reproductive strategies in Chondrichthyes [PDF]
Royal Society Open ScienceChondrichthyans (sharks, rays and chimaera) are a fascinating case study through which to examine reproductive biology. While most vertebrate lineages have converged upon either placental viviparity or oviparity, chondrichthyans exhibit unparalleled ...
Joel Harrison Gayford
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Colonization pattern and thermal needs of immature phases of Sarcophaga argyrostoma (Diptera: Sarcophagidae): Significance for estimating postmortem interval [PDF]
HeliyonMembers of Sarcophagidae are necrophagous and are commonly found on decaying carcasses; and their developmental forms are important indicators for the approximation of lowest postmortem interval (PMImin).
Saba Hediyeloo +3 more
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Morphology of the unique egg cases of hornsharks (Heterodontiformes: Heterodontidae). [PDF]
J Fish BiolAbstract Many of the egg cases of oviparous chondrichthyans remain unknown and undescribed in the literature. Egg cases can be a useful taxonomic character for species distinction and can be a valuable indicator of a species distribution in the field.
O'Neill HL, Tokunaga K, White WT.
europepmc +2 more sources
Sexual Size Dimorphism in Rays and Skates (Elasmobranchii: Batoidea). [PDF]
Ecol EvolInterspecific trends in sexual size dimorphism are superficially similar in batoids to sharks, but are underlain by different modes of evolution. Selection for substantial SSD in batoids seems to be weaker than in sharks. This may be due to differences in the strength of fecundity selection.
Gayford JH +4 more
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