New insights on the external features of egg capsules and embryo development in the squid Loligo vulgaris

作者: Paloma Feyjoo , Miguel Cabanellas-Reboredo , Matías Calvo-Manazza , Beatriz Morales-Nín , Jorge Hernández-Urcera

DOI: 10.1080/00222933.2015.1062932

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摘要: AbstractThe embryonic development of the squid Loligo vulgaris was observed from 183 egg masses collected special devices deployed throughout Cabrera National Park (Baleares Islands, western Mediterranean Sea). Sequence alignment analysis cytochrome oxidase I gene revealed that all embryos belonged to L. vulgaris. In total, 549 capsules were examined. Viable (n = 420) classified into one five maturation stages according primary external features. The length viable varied between 40 and 170 mm, increased with development. non-viable (n = 129) categorized four groups: (Ginger root), II III, empty capsule (IV). percentage (i.e. grades I, III) 92.25%. Empty accounted for 7.75% total capsules. Embryonic a second scale eight stages. Egg stage significan...

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