Reproductive cycle and ovarian development of the marine ornamental shrimp Stenopus hispidus in captivity

Gregati, Rafael Augusto; Fransozo, Vívian; Greco, Laura S. López; Negreiros-Fransozo, Maria Lúcia

doi:10.1016/j.aquaculture.2010.05.009

Cited by 35 publications

(39 citation statements)

References 48 publications

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“…A daily visual record of the gonadal development (Gregati et al, 2010) and/or of the ovigerous masses was maintained to identify and select females with similar embryonic development in order to obtain the greatest possible number of postlarvae of the same age for the study. A daily visual record of the gonadal development (Gregati et al, 2010) and/or of the ovigerous masses was maintained to identify and select females with similar embryonic development in order to obtain the greatest possible number of postlarvae of the same age for the study.…”

Section: Acquisition Of Postlarvaementioning

confidence: 99%

The effect of background colour and lighting of the aquarium on the body pigmentation of the peppered shrimp Lysmata wurdemanni

2018

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During a 100-day period, the effect of two background colours (white and black) of fish tanks and two light spectrum (red and white) on the growth and pigment expression of juvenile peppermint shrimp Lysmata wurdemanni was evaluated. A completely randomized experimental design was implemented with four treatment groups and a control group (natural illumination). At the end of the study, the survival, weight gain and total carotenoid content in the abdomen and cephalothorax (spectrophotometry) were evaluated, in addition to the expression of the body colour through the analysis of digital images (colour composition RGB). The survival, weight gain (%) and total carotenoid content in the abdomen of the shrimp were similar between treatment groups (p > 0.05); however, the pigment content in the cephalothorax of the shrimp of the black background/red light treatment and the control group were significantly greater (p < 0.05) compared to the carotenoid content of shrimp of the white background/white light treatment. Independently of the total carotenoid content and of the light spectra, the shrimp of the treatments that included black background colour expressed a greater body pigmentation in comparison with those preserved in tanks with white background. These data indicate that the shrimp have a constant concentration of body pigments which they express to a greater or lesser degree depending on the environmental conditions in which they live. This effect of environmental conditions on body pigmentation should be considered during the controlled maintenance and cultivation of the peppermint shrimp. K E Y W O R D Sbody pigmentation, colour composition RGB, environmental conditions, Lysmata wurdemanni, ornamental shrimp

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Section: Acquisition Of Postlarvaementioning

confidence: 99%

The effect of background colour and lighting of the aquarium on the body pigmentation of the peppered shrimp Lysmata wurdemanni

2018

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“…Al igual que en el caso de Stenopus hispidus (Gregati et al, 2010), para C. caementarius se encontró que los cambios de coloración observados a simple vista en el ovario están estrechamente relacionados a modificaciones en tamaño, frecuencia de estados de desarrollo y organización de los ovocitos al interior del mismo (Tabla 1). En base a esto y a la reconocida maduración sincrónica de las células, el estado de maduración de los gametos de C. caementarius puede ser exactamente determinado mediante la observación externa del ovario, lo que facilita el manejo de reproductores en terreno principalmente para experiencias de apareamiento donde la unión de hembras próximas a desovar, junto con machos reproductores activos, es la clave en el éxito de esta actividad.…”

Section: Discussionunclassified

Descripcion histologica y caracterizacion de los estados de madurez gonadal de hembras de Cryphiops caementarius (Molina, 1782) (Decapoda: Palaemonidae)

Moreno

Méndez

Meruane

et al. 2012

lajar

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RESUMEN.La extracción indiscriminada y alteraciones del medio natural, han puesto en peligro de extinción al único Palaemónido dulceacuícola de interés comercial, presente en aguas continentales chilenas. Aun cuando esta situación, ha despertado el interés en estudios que permitan su reproducción controlada en cautiverio, actualmente es escaso el conocimiento acerca de aspectos reproductivos básicos de esta especie. Dada su importancia, este trabajo describe y caracteriza el proceso completo de maduración gonadal en hembras de Cryphiops caementarius, en base a cambios en la morfología externa e interna del ovario. Hembras adultas extraídas del río Limarí, fueron disectadas y sus ovarios removidos y preparados para análisis histológicos. Tejido fibromuscular divide el tejido gonadal de cada lóbulo en sacos ováricos de forma semicónica (conos de maduración), al interior del los cuales se encuentran ovocitos en diferentes estados de desarrollo de acuerdo a observaciones microscópicas de tamaño, morfología y tinción con H-E, las células reproductoras femeninas se clasificaron en seis tipos, ovogonias (Ov), ovocitos previtelogénicos tempranos (O1), ovocitos previtelogénicos tardíos (O2), ovocitos vitelogénicos tempranos (O3), ovocitos vitelogénicos tardíos (O4) y ovocitos Maduros (OM). El ciclo de madurez gonadal se dividió en cinco estados según la cantidad y tipo de ovocitos presentes. Los estados 0 y I, corresponden a desovado y previtelogénesis. Los estados II y III a vitelogénesis temprana y vitelogénesis intermedia, mientras el estado IV corresponde a madurez avanzada. La presencia de ovogonias y ovocitos previtelogénicos junto a ovocitos completamente maduros en el estado de madurez avanzada, refleja la capacidad de esta especie de realizar ciclos consecutivos de madurez en intervalos cortos de tiempo. Palabras claves: Palaemonidae, Cryphiops caementarius, ciclo ovárico, madurez gonadal, ovocitos, Chile. Histological description and characterization of the ovarian cycle ofCryphiops caementarius (Molina, 1782) (Decapoda: Palaemonidae) ABSTRACT. Its indiscriminate extraction and alterations of its natural environment, has put in danger of extinction the only commercial freshwater Palemonid present in Chilean inland waters. Even though this situation has awakened interest in studies which allow its controlled reproduction in captivity, currently little is known regarding basic reproductive aspects of this species. Given its relevance, this work describes and characterizes the whole ovarian cycle of Cryphiops caementarius, based on changes in external and internal ovarian morphology. Adult C. caementarius females, obtained from Limarí River, were dissected and its ovaries removed and prepared for histological examinations. Fibromuscular tissue divides the ovarian tissue of each lobe into cone-shaped ovarian pouches (Maturation cones), each one containing various steps of oocytes according to the stages of ovarian development. Based on light microscopic observations of cells' sizes, morphology, and staining with H-...

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“…During reproduction, a daily visual record was kept of the progress of gonadal development (Gregati, Fransozo, Lopez-Greco, & Negreiros-Fransozo, 2010) and/or of ovigerous masses. During reproduction, a daily visual record was kept of the progress of gonadal development (Gregati, Fransozo, Lopez-Greco, & Negreiros-Fransozo, 2010) and/or of ovigerous masses.…”

Section: Production Of Postlarvaementioning

confidence: 99%

Protein and lipid requirement for the growth and reproduction of the peppermint shrimp Lysmata wurdemanni

2019

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The effect of dietary protein and lipid level on growth and reproductive efficiency of the pepermint shrimp Lysmata wurdemanni was evaluated over a 90‐day period. The percentage of protein and lipid (%P/L) in the experimental diets varied as follows: 34/7, 34/8, 34/9, 37/7, 37/8, 37/9, 40/7, 40/8 and 40/9, and a commercial diet was used as control (35/7‐Silver Cup®). Fifteen shrimps per treatment and three replicates were used. The number of moults, survival, and growth, number of ovigerous females as well as protein and carbon content of fertilized eggs were evaluated. The shrimps fed experimental diets 37/7 and 40/9 exhibited a survival of 100%, whilst the survival of shrimp fed diet 40/7 was 73%, without significant differences being observed among the treatment groups. The weight gained (g) by shrimps fed diets 37/9 and 40/8 was significantly greater than the control group. The greatest percentage of ovigerous females was observed in those fed 34/7 and 37/9 diets, and the lowest in the control group. The greatest content of protein/carbon in the eggs was found in females fed the 40/8 diet. The results indicated that a P/L relationship of 34/7% promote efficient growth; however, during the reproductive phase it is necessary to increase the P/L to 40/8% to improve the quality and viability of the eggs.

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Reproductive cycle and ovarian development of the marine ornamental shrimp Stenopus hispidus in captivity

Cited by 35 publications

References 48 publications

The effect of background colour and lighting of the aquarium on the body pigmentation of the peppered shrimp Lysmata wurdemanni

The effect of background colour and lighting of the aquarium on the body pigmentation of the peppered shrimp Lysmata wurdemanni

Descripcion histologica y caracterizacion de los estados de madurez gonadal de hembras de Cryphiops caementarius (Molina, 1782) (Decapoda: Palaemonidae)

Protein and lipid requirement for the growth and reproduction of the peppermint shrimp Lysmata wurdemanni

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