Development of the neotropical catfish<i>Rhamdia quelen</i>(Siluriformes, Heptapteridae) incubated in different temperature regimes

Rodrigues-Galdino, Alana Marielle; Maiolino, Camila Valente; Forgati, Mariana; Donatti, Lucélia; Mikos, Jorge Daniel; Carneiro, Paulo César Falanghe; Rios, Flávia Sant’Anna

doi:10.1017/s096719940999013x

Cited by 31 publications

(20 citation statements)

References 26 publications

(31 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…It is well known that water temperature influences development and growth especially during the rapidly growing larval and juvenile stages (Kamler, 1992, Rodrigues-Galdino et al, 2009). In the upper Paraná River, fish reproduction is most intense when water temperatures are higher (Baumgartner et al, 2008).…”

Section: Discussionmentioning

confidence: 99%

Induced spawning and early ontogeny in hatchery-reared catfish Zungaro jahu (Siluriformes: Pimelodidae)

et al. 2012

View full text Add to dashboard Cite

Hatchery-kept catfish jahus Zungaro jahu (Ihering, 1898) were induced to spawn with carp pituitary extract. The telolecithal eggs were round (1.6 ± 0.1 mm in diameter), demersal, free, and covered with a 0.4 mm-thick jelly coat. The gonadosomatic index of 2.8 was comparable to that of other Pimelodidae. The number of eggs x g of ova-1 was 804 ± 144. Hatching occurred 14.5 h after fertilization, at a temperature of 27.3 ± 0.4º C. The newly-hatched embryos measured 3.9-4.3 mm of total length (TL). At 18 h post-hatching (HPH; 5.3 ± 0.1 mm TL), the retina was pigmented, the mouth opened and dorsoflexion of the notochord had initiated. At 36 HPH (6.4 ± 0.2 mm TL), fusiform chromatophores were vertically arranged in the primordial fin fold and the notochord was dorsoflexed. The yolk sac was almost exhausted by 48 HPH (7.3 ± 0.2 mm TL). At 128 HPH (8.6 ± 0.6 mm TL) the pectoral, dorsal, adipose, caudal, anal, and pelvic fins were readily observable whereas the primordial fin fold was no longer visible. At 224 HPH (16.6 ± 2.5 mm TL), the metamorphosis was completed and the larvae had acquired the juvenile appearance.

show abstract

Section: Discussionmentioning

confidence: 99%

Induced spawning and early ontogeny in hatchery-reared catfish Zungaro jahu (Siluriformes: Pimelodidae)

et al. 2012

View full text Add to dashboard Cite

show abstract

“…• C in the anostomid Leporinus frederici, Sanches et al 2008), and almost all warmwater or tropical fishes with semi-buoyant eggs and strong swelling hatch much sooner than predicted by any of the two aforementioned models (see the Chinese carps in Teletchea et al 2009 and a list of tropical species in Rodrigues-Galdino et al 2009). McDowall (2009 hypothesized that for amphidromous gobies, the shorter the time between fertilization and hatching, the higher the survival for a series of reasons, including shorter exposure to predators, longer transport at the larval stage and greater resistance to starvation as plenty of yolk remains at hatching.…”

Section: Thermal Biology Of Clown Loach Eggsmentioning

confidence: 98%

Biology and culture of the clown loachChromobotia macracanthus(Cypriniformes, Cobitidae) : 2- Importance of water movement and temperature during egg incubation

Slembrouck¹,

Priyadi²,

Permana³

et al. 2012

Aquat. Living Resour.

View full text Add to dashboard Cite

-In comparison to older life stages, the embryonic stages of fishes generally have narrow tolerance ranges for environmental conditions, as regards water quality, temperature and mechanical shocks. The knowledge of these factors is indispensable to appraise the threats brought about by climate or anthropogenic changes upon their resilience, and to define adequate ways of incubating their eggs for an efficient propagation of the species under controlled conditions. Clown loach eggs have a narrow thermal tolerance range in comparison to other tropical and temperate fishes. Hatching occurs at 22−30• C, and non-deformed larvae can only be obtained at 23.8−30.2 • C. Furthermore, the thermal tolerance of any particular progeny was found dependent on the maintenance temperature of the female parent, thereby making the actual tolerance no broader than 4.5• C. The (log-log) relationship between the duration of the incubation period and temperature was characterized by a shallow slope, which is more typical of coldwater fishes, as is a narrow thermal tolerance range. On the other hand, clown loach hatched more rapidly (20 h at 26• C) than predicted by existing models on the basis of water temperature and egg diameter, a feature that is shared by other warmwater fishes producing eggs that undergo a strong swelling process (about three times the ova diameter in clown loach). Clown loach embryos are strongly sensitive to mechanical shocks, but their development is not viable either in protracted steady state conditions, in absence of water movement, as they develop various deformities (e.g. pericardial oedema). This is thought to originate from a hypoxic microenvironment around the embryo, as a consequence of an oxygen gradient developing inside and outside the egg, since the boundary diffusion layer is not refreshed by water movement. This issue is worsened by strong egg swelling and incubation at warm temperature.

show abstract

“…Para isso há necessidade de conhecer a amplitude térmica tolerável para a incubação dos ovos da espécie investigada, assim como, detalhadamente, a cronologia do desenvolvimento embrionário em cada valor de temperatura. Ovos de jundiá incubados a 24ºC eclodiram 26 horas pós-fertilização (hpf), enquanto aqueles incubados a 21ºC, apenas depois de 43 hpf (RODRIGUES-GALDINO et al, 2009). Nesse caso houve uma ampliação de 65% do tempo necessário para concluir o desenvolvimento embrionário do jundiá desde a fertilização até a eclosão.…”

Section: Discussionunclassified

Tetraploidia em Rhamdia quelen (Quoy e Gaimard, 1824) por choque térmico duplo (quente e frio)

Garcia

Júnior

Yasuy³

et al. 2017

Bol. Inst. Pesca

View full text Add to dashboard Cite

The efficiency of double thermal shock to induce tetraploidy in Rhamdia quelen (jundiá) at different post-fertilization periods was assessed. Each test was performed with 20 mL of eggs (10, 15, 20, 25, 30 and 35 mpf -minutes post-fertilization) exposed to hot thermal shock (39±0.2ºC) for 3 min, followed by cold thermal shock (1.0±0.1ºC) for 30 min. A control group was also employed. Fertilization and hatching rates were evaluated 12 and 30 hours post-fertilization (hpf), respectively. After 60 hpf, twenty-five larvae from each experimental unit were fixed to verify the ploidy by flow cytometry. Control fertilization rate was 87.83% and reached 23. 4%, 28.5%, 30.4%, 20.0%, 30.3%, 36.7% respectively for 10, 15, 20, 25, 30, 35 mpf. Tetraploids were detected only at 15 mpf and 20 mpf. This is the first research of tetraploidy in jundiá obtained by hot and cold shocks, making possible the improvement of this technique.Key words: jundiá; tetraploidy; thermal shock; poliploidy.. RESUMOAvaliou-se a eficiência do choque térmico duplo para induzir tetraploidia em jundiá Rhamdia quelen em diferentes tempos pós-fertilização. Vinte mililitros de ovos (10, 15, 20, 25, 30 e 35 mpf -minutos pós-fertilização) foram tratados com choque térmico quente (39±0,2ºC) durante 3 min seguido de choque térmico frio (1,0±0,1ºC) durante 30 min. Um grupo controle foi utilizado. As taxas de fertilização e de eclosão foram medidas 12 hpf (horas pós-fertilização) e 30 hpf, respectivamente. Decorridas 60 hpf, 25 larvas de cada unidade experimental foram fixadas para verificação da ploidia, por citometria de fluxo. A taxas de fertilização foram de 87,83% para o controle e de 23,4%; 28,5%; 30,4%; 20,0%; 30,3% e 36,7%, para os grupos tratados com choque térmico aos 10, 15, 20, 25, 30, 35 mpf, respectivamente. Encontraram-se tetraploides apenas nos grupos de ovos tratados aos 15 mpf e 20 mpf. Este é o primeiro trabalho de indução de tetraploidia em jundiá por choques térmicos quente e frio, o qual possibilitou o aperfeiçoamento dessa técnica.Palavras-chave: jundiá; tetraploide; choque de temperatura; poliploidia.

show abstract

Development of the neotropical catfishRhamdia quelen(Siluriformes, Heptapteridae) incubated in different temperature regimes

Cited by 31 publications

References 26 publications

Induced spawning and early ontogeny in hatchery-reared catfish Zungaro jahu (Siluriformes: Pimelodidae)

Induced spawning and early ontogeny in hatchery-reared catfish Zungaro jahu (Siluriformes: Pimelodidae)

Biology and culture of the clown loachChromobotia macracanthus(Cypriniformes, Cobitidae) : 2- Importance of water movement and temperature during egg incubation

Tetraploidia em Rhamdia quelen (Quoy e Gaimard, 1824) por choque térmico duplo (quente e frio)

Contact Info

Product

Resources

About