Early development in the annual fish <i>Cynolebias viarius</i>

Arezo, María José; Pereiro, Luisa; Berois, Nora

doi:10.1111/j.0022-1112.2005.00688.x

Cited by 50 publications

(72 citation statements)

References 35 publications

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“…The presence of a subgerminal cavity during the embryonic period has been reported in longnose gar Lepisosteus osseus [33], Amia calva [34], whitefish Coregonus clupeaformis [35], and stickleback Gasterosteus aculeatus [36], but not in any clupeids. However, the development of a blastocoel has been reported in the Japanese eel Anguilla japonica [37], rainbow trout Onchorhynchus masou [38], and Cynolebias viarius [39], but it is not obvious in American shad [23], and is absent in zebrafish [21]. Although Collazo et al [40] reviewed and compared the gastrulation of teleosts from a phylogenetic viewpoint, to what extent the subgerminal cavity and the blastocoel is present in the teleost lineage has not been reviewed comprehensively.…”

Section: Discussionmentioning

confidence: 99%

Embryonic development and morphology of eggs and newly hatched larvae of Pacific herring Clupea pallasii

et al. 2011

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The embryonic development and morphology of eggs and newly hatched larvae of the Pacific herring Clupea pallasii were described using laboratory-reared specimens originating from the Miyako Bay stock. The eggs were almost spherical in shape, 1.33-1.46 mm (mean: 1.38 mm) in diameter, and had a thick adherent chorion. They had a segmented pale yellow yolk, no oil globule, and a relatively wide perivitelline space. A subgerminal cavity was observed during the gastrula period, whereas the blastocoel did not appear. Mass hatching occurred by 271 h 45 min after fertilization, and the newly hatched larvae were 7.1-7.7 mm (mean: 7.5 mm) in total length with 53-56 myomeres at 9.6°C. The embryonic development of Pacific herring was substantially similar to that of zebrafish Danio rerio, American shad Alosa sapidissima, as well as Atlantic herring Clupea harengus, and generally followed the basic developmental pattern of teleosts. However, Pacific herring larvae hatched at a more developed stage than some other clupeoids, such as Japanese sardine Sardinops melanostictus, and the progressed developmental stage at hatching could be interpreted as an advanced adaptation.

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Section: Discussionmentioning

confidence: 99%

Embryonic development and morphology of eggs and newly hatched larvae of Pacific herring Clupea pallasii

et al. 2011

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“…Milky white eggs, which were considered dead, were removed. These developmental stages were compared with previous studies conducted with other species (Gorshkova et al, 2002;Tachihara and Kawaguchi, 2003;Arezo et al, 2005;Chen, 2005;Dhaneesh et al, 2009). …”

Section: Embryonic Developmentmentioning

confidence: 95%

Breeding, embryonic development and salinity tolerance of Skunk clownfish Amphiprion akallopisos

Dhaneesh

Devi

Kumar

et al. 2012

Journal of King Saud University - Science

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Breeding and rearing some of the clownfishes most commonly used in the aquarium trade actually represent an economical and ecological tool for broadening development. Culture of clownfish species in low-saline water is still in its infancy. Salinity of the culture environment is one of the more relevant parameters affecting fish physiology, modifying food intake and growth performance in many fish species. The objective of this study was to breed skunk clownfish (Amphiprion akallopisos) in aquarium condition, document the embryonic development, determine the upper and lower lethal salinities of juveniles, tolerance of five different salinities (20, 25, 30, 35, and 40 ppt) and their effect on the survival rate of larvae. Higher (53-55 ppt) and lower (3-6 ppt) salinities produced loss of appetite and movement, finally leading to mortality in juveniles. In a ninety six hour experiment, larvae showed 100% survival at the salinities of 30 (control) and 35 ppt and 88% survival in 40 ppt salinity and 76% survivals in 20 and 25 ppt. In conclusion juveniles of A. akallopisos exhibit satisfactory rates of survival and no signs of stress in high (up to 53 ppt) and low saline (up to 6 ppt) waters. These results demonstrate that using such salinities, which can reduce the incidence of diseases and mortality, does not produce significant physiological alterations in this species. In addition, descriptive studies on embryonic development and mass scale larval rearing were also carried out during the present study.

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“…This adaptation requires notable high growing and development rates (Errea & Danulat, 2001). When ponds dry out, adults die and their eggs remain in diapause buried in the substrate, hatching on the next year, with the return of favorable conditions (Wourms, 1972;Arezzo et al, 2005). While tadpoles have the possibility of regulating their metamorphosis time (exit of the temporary pond) based on the environmental conditions, for annual fishes the only option is the fast growth and maturation because its whole cycle passes in ephemeral ponds.…”

Section: Introductionmentioning

confidence: 99%

Diet of four annual killifishes: an intra and interspecific comparison

et al. 2009

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We examined the diet of 4 annual fishes, Austrolebias viarius, Austrolebias cheradophilus, Austrolebias luteoflammulatus and Cynopoecilus melanotaenia inhabiting temporal ponds of southeastern Uruguay, by analysis of stomach contents. Fishes were captured from fifty ephemeral ponds of Castillos Lagoon basin, in the region of the Humedales del Este. We identified 13099 individual prey items extracted from 669 stomachs of the four captured species. In the studied system, annual killifishes represents the most abundant and conspicuous top predators. Killifishes are generalist key predators at the ephemeral ponds of the studied system, consuming mostly aquatic items. Zooplancton represented the bulk of the diet in the four analyzed species, followed by eggs, algae and diatoms. Insects are the next group in prey number, as follows: Diptera larvae (especially Chironomidae and Cullicidae), Ephemeroptera (especially Betidae), and coleopteran larvae (especially Dytiscidae). Acari are also important prey in number. The four fish species differ in diet composition and in diet richness. A general pattern of differences in diet richness among killifish species and demographic groups could be related to variations in body sizes. As top predators annual killifishes are an important component of the temporal pond ecosystems. Understanding the natural history of this species and their communities is necessary in order to conserve them. Nós examinamos a dieta de 4 peixes anuais, Austrolebias viarius, Austrolebias cheradophilus, Austrolebias luteoflammulatuse Cynopoecilus melanotaenia, que habitam poças temporárias do sudeste do Uruguai, através da análise de conteúdo estomacal. Os peixes foram capturados em cinco poças temporárias da bacia da lagoa Castillos, na região de Humedales del Este. Nós identificamos 13099 itens de presas estraídos de 669 estômagos das quatro espécies. No sistema estudado, peixes anuais representam os predadores de topo mais abundantes e conspícuos. Os rivulídeos são predadores generalistas nas poças temporaries estudadas, consumindo principalmente itens aquáticos. Zooplâncton representou o item principal da dieta para as quatro espécies, seguido de ovos, algas e diatomáceas. Insetos compoem o próximo grupo em número de presas, como segue: larvas de Diptera (especialmente Chironomidae e Cullicidae), Ephemeroptera (especialmente Betidae), e larvas de Coleoptera (especialmente Dytiscidae). Ácaros foram também presas importantes em número. As quatro espécies de peixes diferem na composição e riqueza das dietas. O padrão geral de diferenciação da dieta entre espécies e grupos demográficos de rivulídeos pode ser relacionado à variação do tamanho corporal. Como predadores de topo, os rivulídeos anuais são um componente importante dos ecossistemas de poças temporárias. A compreensão da história natural destas espécies e de suas comunidades é necessária a sua conservação.

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Early development in the annual fish Cynolebias viarius

Cited by 50 publications

References 35 publications

Embryonic development and morphology of eggs and newly hatched larvae of Pacific herring Clupea pallasii

Embryonic development and morphology of eggs and newly hatched larvae of Pacific herring Clupea pallasii

Breeding, embryonic development and salinity tolerance of Skunk clownfish Amphiprion akallopisos

Diet of four annual killifishes: an intra and interspecific comparison

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