ArticlePloS one2018
Oviparous elasmobranch development inside the egg case in 7 key stages.
Article in PloS one, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.
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Who cites it
16 citing papers in PubMed, 48 citations in OpenAlex.
- The vertebrate yolk sac: evolutionary origins and current advances in in vitro models.Development (Cambridge, England) · 2026Review
- Two's company: Monozygotic twinning in the small-spotted catshark (Scyliorhinus canicula).Journal of fish biology · 2025Article
- Diversity and dynamics of fish ovaries: Insights into reproductive strategies, hormonal regulation, and ovarian development.Histology and histopathology · 2025Review
- Low microbial abundance and community diversity in the egg capsule of the oviparous cloudy catshark (Scyliorhinus torazame) during oviposition.Environmental microbiology reports · 2024Article
- Development of branchial ionocytes in embryonic and larval stages of cloudy catshark, Scyliorhinus torazame.Cell and tissue research · 2024Article
- Loss of noggin1, a classic embryonic inducer gene, in elasmobranchs.Scientific reports · 2024Article
- Impacts of Deoxygenation and Hypoxia on Shark Embryos Anti-Predator Behavior and Oxidative Stress.Biology · 2023Article
- Article
- ThreeFrontiers in cell and developmental biology · 2023Article
- Molecular mechanism of nutrient uptake in developing embryos of oviparous cloudy catshark (Scyliorhinus torazame).PloS one · 2022Article
- First confirmed complete incubation of a flapper skate (Dipturus intermedius) egg in captivity.Journal of fish biology · 2021Article
- Future thermal regimes for epaulette sharks (Hemiscyllium ocellatum): growth and metabolic performance cease to be optimal.Scientific reports · 2021Article
- Ocean warming impairs the predator avoidance behaviour of elasmobranch embryos.Conservation physiology · 2021Article
- The intraspecific diversity of tooth morphology in the large-spotted catshark Scyliorhinus stellaris: insights into the ontogenetic cues driving sexual dimorphism.Journal of anatomy · 2020Article
- The biophysical basis of thermal tolerance in fish eggs.Proceedings. Biological sciences · 2020Article
- Twins! Microsatellite analysis of two embryos within one egg case in oviparous elasmobranchs.PloS one · 2019Article
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Authors and funding
3 authors at 1 institution in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Embryological stages of oviparous elasmobranch during development can be difficult to identify, requiring magnification and/or fixation of an anaesthetized embryo. These restrictions are poorly suited for monitoring the development of living elasmobranchs inside their egg cases. There are two major aims of this study. The first was to observe elasmobranch embryonic development non-invasively and produce a non-invasive developmental key for identifying the life stages for an elasmobranch inside the egg case. To this end, 7 key developmental stages were identified for the greater spotted catshark, Scyliorhinus stellaris, and are provided here with diagrams from multiple perspectives to demonstrate the key features of each stage. The physiological and ecological relevance of each stage are discussed in terms of structure and function for embryonic survival in the harsh intertidal zone. Also discussed is the importance of the egg case membrane and the protective embryonic jelly. The second aim of the study was to understand the applicability of the 7 developmental stages from S. stellaris to other oviparous elasmobranchs. Thus, changes in embryonic body size and egg yolk volume at each stage were measured and compared with those of the closely related, lesser spotted catshark, Scyliorhinus canicula. We find nearly identical growth patterns and yolk consumption patterns in both species across the 7 developmental stages. Thus, although the 7 developmental stages have been constructed in reference to the greater spotted catshark, we suggest that it can be applied to other oviparous elasmobranch species with only minor modification.
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