Induction of spawning by temperature and serotonin in the hermaphroditic tropical scallop, Pecten ziczac

Velez, Antonino; Alifa, Elizabeth; Azuaje, Orlando

doi:10.1016/0044-8486(90)90095-5

Cited by 34 publications

(4 citation statements)

References 12 publications

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“…The reproduction of molluscan bivalves has been closely studied in the past decades to support management decisions (Byrne 1998, Beasley et al 2000, Hold et al 2013, pest control (Ram et al 1996), and to enhance aquaculture farming (Joaquim et al 2008). Past studies mostly attempted to establish methods for spawn induction (Gibbons & Castagna 1984, V elez et al 1990, Mies & Sumida 2012, Navneel & Azam 2013, to characterize gamete release and spawning behavior (Jameson 1976, Marteil 1976, Andr e & Lindegarth 1995, to evidence seasonality in reproductive competence (e.g., Marteil 1960, Grant & Tyler 1983, Beasley et al 2000, Pouvreau et al 2000, and to identify potential high reproductive areas (Williams & Babcok 2010, Hold et al 2013.…”

Section: Introductionmentioning

confidence: 99%

Identifying Robust Proxies of Gonad Maturation for the Protandrous HermaphroditeTridacna maxima(Röding, 1798, Bivalvia) from Individual to Population Scale

Menoud

Wynsberge

Moullac

et al. 2016

Journal of Shellfish Research

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Monitoring gonad maturation for protandrous and functional hermaphrodite species such as the giant clam Tridacna maxima is difficult due to the juxtaposition and relative proportion of male and female tissues in the gonad [gonadal sex ratio (GSR)].Here, the relevance of the widely used gonadosomatic index (GSI) as proxy of giant clam gonad maturation is tested with a large dataset (n ¼ 265). Gonadosomatic index is compared with other indices, namely the proportion of the male part harboring spermatozoids, the proportion of empty oocyte follicles, the mean oocyte diameter, and the oocyte elongation. At gonad scale, high index variability highlighted partial spawning. At individual scale, male and female maturation proxies were contrasted, showing either asynchronous emissions of male and female gametes or contrasted spermatogenesis and oogenesis duration. The GSI was mostly driven by the number and diameter of oocytes and therefore it is recommended here as primary proxy for female maturity. Except for the oocyte elongation, all indices were affected by the GSR, which ruled out drawing conclusions at population scale. These results highlight the need for maturation stage proxies that are optimized for functional hermaphrodite species.

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Section: Introductionmentioning

confidence: 99%

Identifying Robust Proxies of Gonad Maturation for the Protandrous HermaphroditeTridacna maxima(Röding, 1798, Bivalvia) from Individual to Population Scale

Menoud

Wynsberge

Moullac

et al. 2016

Journal of Shellfish Research

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“…En diferentes trabajos se ha determinado la dosis de la serotonina a emplear, porque la respuesta depende de la especie (Martínez et al, 1996). Este es el caso de los pectínidos Euvola ziczac (Vélez et al, 1990), A. ventricosus (Lora-Vilchis et al, 1997, 2003Monsalvo-Spencer et al, 1997), A. Figura 3. Crecimiento de larvas hasta el estadio plantígrado de la almeja voladora Euvola vogdesi a 20, 23 y 25°C en cultivo realizado en 1992.…”

Section: Discussionunclassified

“…Figura 4. Crecimiento de larvas hasta el estadio plantígrado de la almeja voladora Euvola vogdesi a 24 ± 1°C en los años 1992, 1999 y 2001. purpuratus y A. irradians (Gibbons & Castagna, 1984;Vélez et al, 1990;Martínez et al, 1996). En la almeja catarina como en la almeja voladora, la inyección intragonadal de 0,3 mL de serotonina a concentración 0,25 mM es 100% efectiva para liberar espermatozoides, en tanto que la liberación de ovocitos ocurre como efecto secundario; posterior a esta liberación de ovocitos se vuelven a liberar espermatozoides.…”

Section: Discussionunclassified

Larval and juvenile culture of Vogde’s scallop Euvola vogdesi (Pteroida: Pectinidae)

Monsalvo-Spencer

Reynoso-Granados

Robles-Villegas

et al. 2017

Lat. Am. J. Aquat. Res.

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Our work describes embryonic, larval, and juvenile development of Euvola vogdesi and shows results of experimental larval culture of this species. Broodstock in the conditioning system reached total maturity of the gonad at 42 ± 5 days. Breeders were induced to spawning with thermal shock methods (18- 28°C/20 min) and with intragonadal serotonin injection (0.3 mL to 0.25 mM). The experiments of temperature effect on larval growth (20, 23, and 25°C) showed that the highest growth in shell length was achieved at 25°C. Larval growth achieved in 1992, 1999, and 2001 showed significant differences. After 9 years of technical improvements to optimize larval production, we have been able to decrease culture time from 25 to 11 days from fertilization to the plantigrade stage. After metamorphosis, postlarvae developed ornamentation in the disoconch, acquiring the species typical morphology. Juveniles from 3.5-4.0 mm in length had a survival of 3- 5%, at 55 ± 5 days in pre-fattening. Juveniles of 6-7 mm in length showed the characteristic valves of adults after 20-25 days of fattening.

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“…Salinity mainly affects the stability of the osmotic pressure in ovum (Taylor & Seneviratna 2005). For the shellfish with in vitro fertilization, generally, the sperm is inactive in spermary or semen, and the sperm only can be activated when it is in a proper external water environment (Stephen & Shetty 1981;Velez, Alifa & Azuaje 1990;O'Connor & Heasman 1995;Khan 2006;Wang et al 2011).The activity of the sperm is mainly embodied in the oscillation of flagellum, and energy consumption is necessary for the oscillation of flagellum. For the solution with extremely high or low concentration, energy consumption is also necessary for regulation of osmotic pressure (Ruan, Feng & Yang 2004).…”

Section: Salinity (Ppt)mentioning

confidence: 99%

Reproductive success under the joint influences of temperature and salinity in noble scallop, Chlamys nobilis (Reeve)

Lü

et al. 2015

Aquac Res

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In this study, the joint effects of two important environmental factors, temperature and salinity, on the per cent fertilization (FR) and per cent hatching (HR) of noble scallop, Chlamys nobilis, was evaluated using the central composite design and the response surface methodology. The results showed that the linear effects of temperature on FR and HR were significant (P < 0.01), and the linear effects of salinity were non-significant (P > 0.05); the interactions between temperature and salinity were not significant (P > 0.05); the quadratic effects of temperature and salinity on the two responses were significant (P < 0.01); temperature was more important in influencing the reproductive success. The model equations of FR and HR towards temperature and salinity were established, with R 2 more than 98%, indicating that the models had excellent ability for goodness of fit and projection. Through simultaneously optimizing the two models derived, we found out that the optimum factor combination was 25.7°C/ 29 ppt and the greatest reproductive success was 89.93% for FR and 72.42% for HR. The desirability value of 97.30% showed the reliability of these optima. Our results provide some valuable guidelines for refining the reproductive efficiency of C. nobilis.

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Induction of spawning by temperature and serotonin in the hermaphroditic tropical scallop, Pecten ziczac

Cited by 34 publications

References 12 publications

Identifying Robust Proxies of Gonad Maturation for the Protandrous HermaphroditeTridacna maxima(Röding, 1798, Bivalvia) from Individual to Population Scale

Identifying Robust Proxies of Gonad Maturation for the Protandrous HermaphroditeTridacna maxima(Röding, 1798, Bivalvia) from Individual to Population Scale

Larval and juvenile culture of Vogde’s scallop Euvola vogdesi (Pteroida: Pectinidae)

Reproductive success under the joint influences of temperature and salinity in noble scallop, Chlamys nobilis (Reeve)

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