Energy Storage and Allocation During Reproduction of Pacific Winged Pearl Oyster Pteria sterna at Bahía de la Paz, Baja California Sur, Mexico

Vite-García, Nicolás; Saucedo, Pedro E.

doi:10.2983/0730-8000(2008)27[375:esaadr]2.0.co;2

Cited by 27 publications

(27 citation statements)

References 20 publications

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“…Stocking density (overcrowding) may also play a key role in determining greater expression of maleness. Examples of this have been documented for P. maxima ( Taylor, 1999 ), P. margaritifera ( Thielley et al ., 1993b ;Acosta-Salmón and Southgate, 2005 ) and P. mazatlanica ( Saucedo and Monteforte, 1997 ;Vite-García and Saucedo, 2008 ) under culture conditions. The adaptive value of protandry under such conditions may be related to either the consequent size-independent nature of male reproductive success versus the size-dependent nature of reproductive success in females ( Wright, 1988 ), or the diffi culty for overcrowded, stressed oysters to allocate the energy required to develop oocytes instead of energetically cheaper spermatozoa ( Saucedo et al ., 2002b ).…”

Section: Sex Ratio In Wild and Cultured Oystersmentioning

confidence: 96%

“…Pearl oysters are rhythmical hermaphrodites, having more than one sex reversal during their lifetime. This phenomenon has been observed in P. mazatlanica ( Galtsoff, 1950 ;Saucedo and Monteforte, 1997 ;Saucedo et al ., 2002b ;Vite-García and Saucedo, 2008 ;Figs. 5.6a and 5.6b ), P. maxima ( Wada, 1953 ), P. albina ( Tranter, 1958c ), P. margaritifera ( Tranter, 1958d ;Thielley et al ., 1993b ) and P. fucata ( Ojima and Maeki, 1955 ;Tranter, 1959 ;Chellam, 1987 ;Wada et al ., 1995 ).…”

Section: Sex Differentiation and Sex Reversalmentioning

confidence: 99%

“…So far, VCT cells have only been observed in P. mazatlanica ( Saucedo et al ., 2002b ) while Pteria species (at least Pt. sterna ) probably lack VCT and adipogranular nourishing cells ( Vite-García and Saucedo, 2008 ). Auxiliary cells are specialized intra-gonad cells observed only in female acini and always in intimate contact with developing oocytes to which they attach by desmosome-like gap junctions.…”

Section: Non-germinal Nourishing Cellsmentioning

confidence: 99%

“…2.6). Populations inhabiting the tropical coast of Costa Rica spawn multiple times during the year ( Solano-López et al ., 1997 ), while those from Mexico can spawn once in summer ( Sevilla, 1969 ;Saucedo and Monteforte, 1997 ;Saucedo et al ., 2002a, b ;Gómez-Robles et al ., 2005 ;Vite-García and Saucedo, 2008 ), twice ( García-Cuellar et al ., 2004 ), or even three times a year ( García-Domínguez et al ., 1996 ).…”

Section: Timing Of Reproductive Eventsmentioning

confidence: 99%

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Reproduction, Development and Growth

Saucedo¹,

Southgate²

2008

The Pearl Oyster

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Section: Sex Ratio In Wild and Cultured Oystersmentioning

confidence: 96%

Section: Sex Differentiation and Sex Reversalmentioning

confidence: 99%

Section: Non-germinal Nourishing Cellsmentioning

confidence: 99%

Section: Timing Of Reproductive Eventsmentioning

confidence: 99%

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Reproduction, Development and Growth

Saucedo¹,

Southgate²

2008

The Pearl Oyster

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“…Total proteins, carbohydrates, and lipid analyses were performed in lyophilized samples, and data are referred to as mg g -1 dw. These analyses were done according with the methodology described in Palacios et al (2000) and Vite-García & Saucedo (2008).…”

Section: Biochemical and Fatty Acid Analysesmentioning

confidence: 99%

Growth and survival of Hippocampus erectus (Perry, 1810) juveniles fed on Artemia with different HUFA levels

Vite-García

Simões

Arjona

et al. 2014

lajar

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ABSTRACT. Survival during first months after birth is one of the bottlenecks for consolidating the seahorse farming industry. In this work, Artemia metanauplii enriched with two highly unsaturated fatty acids (HUFA) rich commercial emulsions with different docosahexaenoic acid (DHA) levels (63% and 14% of total lipids), a vegetable oil with no DHA, and non-enriched Artemia as control, were used to feed 5-day-old juvenile Hippocampus erectus for 60 days. Enriched Artemia had similar levels of DHA (13% and 9%), despite great differences of DHA in the emulsions, with traces of DHA in non-enriched and vegetable oil enriched Artemia. More than 20% of DHA was found in 24 h starved juveniles fed both DHA-enriched treatments, similar to values in newly born juveniles, but those fed vegetable oil enriched Artemia or non-enriched Artemia had 5% of DHA. Total lipid and protein levels were similar in juveniles from the four treatments. The n-3/n-6 ratio was almost four-fold higher in seahorses fed DHA-enriched treatments compared to juveniles fed the nonenriched treatments. Survival of seahorses only partially reflected the DHA levels: it was lower in the vegetable oil treatment, similar in the seahorses fed Artemia with higher DHA and in the control treatment, and higher in seahorses fed the HUFA-enriched Artemia with lower DHA levels, although growth was similar in the two DHA-enriched Artemia treatments. Juvenile H. erectus seahorses perform better when they have at least 20% of DHA in their tissues, and these levels can be attained with no more than 14% of DHA in emulsions, eliminating the need for more expensive emulsions with higher DHA levels. Keywords: Hippocampus erectus, seahorse, DHA, growth, fatty acids, survival, aquaculture.Crecimiento y sobrevivencia de juveniles de Hippocampus erectus (Perry, 1810) alimentados con Artemia con diferentes niveles de HUFA RESUMEN. La sobrevivencia durante los primeros meses de vida es uno de los cuellos de botella para la consolidación de la industria del cultivo del caballito de mar (Hippocampus erectus). En este trabajo se utilizaron metanauplios enriquecidos con dos emulsiones comerciales, con diferentes niveles de ácido docosahexaenóico (DHA) (63% y 14%), con aceite vegetal sin DHA, y metanauplios sin enriquecimiento como control, para alimentar caballitos de mar de 5 días de vida durante 60 días. La Artemia enriquecida tuvo niveles similares de DHA (13% y 9%), a pesar de las grandes diferencias en las emulsiones, con trazas de DHA en la Artemia no enriquecida y la enriquecida con aceite vegetal. Se obtuvo más de 20% de DHA en juveniles, muestreados con 24 h de ayuno, de los tratamientos con enriquecimiento de DHA, con valores similares a los de caballitos recién nacidos, pero los caballitos que se alimentaron con Artemia enriquecida con aceite vegetal y con Artemia no enriquecida tuvieron 5% de DHA. Los lípidos y proteínas totales fueron similares en los caballitos de los cuatros tratamientos. La razón n-3/n-6 fue casi cuatro veces mayor en caballitos alimentados con los t...

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Growth and gonad development of the tropical black-lip pearl oyster, Pinctada margaritifera (L.), in the Gambier archipelago (French Polynesia)

et al. 2011

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The growth and reproductive cycle of cultured black-lipped pearl oysters, Pinctada margaritifera (L.), were studied in the Gambier Islands (134°52 0 W, 23°07 0 S) from September 2002 to August 2003. Temperatures were recorded throughout the year, revealing seasonal temperature variations between 22.3 and 27.8°C. The mean annual chlorophyll a value, as computed from satellite data, was 0.188 ± 0.075 lg L -1 . To study growth and reproduction, 720 two-year-old individuals were ear hung on long-lines suspended at a depth of 7 m. Samples were taken twice a month to obtain the following measurements: shell height; wet weight of flesh and total oyster; dry weight of adductor muscle, mantle and visceral mass; and glycogen content. Gonad development was also studied by histology on parallel samples. Growth was relatively fast during the first 6 months of the study: average shell height increased from 89.

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Energy Storage and Allocation During Reproduction of Pacific Winged Pearl Oyster Pteria sterna at Bahía de la Paz, Baja California Sur, Mexico

Cited by 27 publications

References 20 publications

Reproduction, Development and Growth

Reproduction, Development and Growth

Growth and survival of Hippocampus erectus (Perry, 1810) juveniles fed on Artemia with different HUFA levels

Growth and gonad development of the tropical black-lip pearl oyster, Pinctada margaritifera (L.), in the Gambier archipelago (French Polynesia)

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