Reproductive periodicity of sea cucumber Bohadschia vitiensis (Echinodermata: Holothuroidea) in Hurghada area, Red Sea, Egypt

Omar, Hamdy A.; Razek, Fatma A. Abdel; Rahman, S.H. Abdel; El-Shimy, N. A.

doi:10.1016/j.ejar.2013.06.002

Cited by 17 publications

(9 citation statements)

References 13 publications

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“…Spawning takes place from June to November, with a peak during August and September, coinciding with higher temperatures. This relationship for holothurids has been observed by many authors (Drumm & Loneragan, 2005;Guzmán, Guevara, & Hernández, 2003;Hamel, Himmelman, & Dufresne, 1993;Hamel & Mercier, 1995;Muthiga, Kawaka, & Ndirangu, 2009;Omar, Abdel Razek, Abdel Rahman, & El Shimy, 2013;Ramofafia, Battaglene, Bell, & Byrne, 2000;Ramofafia, Byrne, & Battaglene, 2001).…”

Section: Discussionsupporting

confidence: 73%

Reproductive cycle of the sea cucumber (Isostichopus fuscus) and its relationship with oceanographic variables at its northernmost distribution site

Pañola-Madrigal¹,

Calderón-Aguilera²,

Aguilar-Cruz

et al. 2017

RBT

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The brown sea cucumber Isostichopus fuscus is highly prized and intensively fished, yet no studies of its reproductive cycle at its northernmost distribution site exist. To characterize its reproductive cycle, monthly surveys (Oct 2014-Dec 2016) that included gonad collection were conducted in 118 sites along the eastern coast of Baja California, including islands from Bahía San Luis Gonzaga (29o 49’ 14.18” N, 114 o 3’56.17” W) to the 28th parallel north. A total of 2 808 sea cucumber specimens were measured (mean length ± SD = 21.4 ± 6 cm) and weighed (375.6 ± 249 g). Seven hundred and seventeen organisms were dissected but only 553 gonads were suitable for processing through histological analysis to identify sex and developmental stage. Of these individuals, 224 were female, 162 were male, 157 were undifferentiated and 10 were hermaphrodites, resulting in a sex ratio that was significantly different from 1:1 (χ2 = 36.63, P = 0.03, df = 23). There was no statistical difference (p > 0.05) of either size or weight between males and females, but females were larger than males. The length-weight relationship observed was W = 0.18L2.4, r2 = 0.82, p <0.05 while the size-at-first-maturity was 16 cm. Five gonad stages were identified: 28% undifferentiated, 9% gametogenesis, 15% mature, 19% expulsion and 29% post-expulsion. The Oocyte Theoretical Diameter (OTD) was estimated by measuring the area of 10 291 oocytes, finding 2 307 individuals in oogenesis (mean ± SD of 65.3 ± 19.7 µm), 3 630 in maturity (66.0 ± 17.8 µm), 3 756 in spawning (73.8 ± 14.6 µm) and 868 in post-spawning (49.18 ± 20.7 µm). Modal progression analysis shows that oocytes increase 23% in size from oogenesis to maturity, and decrease 9%in size from maturity to spawning and, on average, oocytes are 72% smaller post-spawning that during spawning. Rev. Biol. Trop. 65(Suppl. 1): S180-S196. Epub 2017 November 01.

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Section: Discussionsupporting

confidence: 73%

Reproductive cycle of the sea cucumber (Isostichopus fuscus) and its relationship with oceanographic variables at its northernmost distribution site

Pañola-Madrigal¹,

Calderón-Aguilera²,

Aguilar-Cruz

et al. 2017

RBT

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“…The sex ratio for H. sanctori and H. tubulosa did not differ from 1:1 known as the general H. ns sex ratio (Despalatović et al, 2004;Dissanayake and Stefansson, 2010;Kazanidis et al, 2010;Omar et al, 2013;Kazanidis et al, 2014;Marquet et al, 2017). However, for H. forskali, the sex ratio was different from the balanced one, which was already reported for this species (Tuwo and Conand, 1992;Santos et al, 2016).…”

Section: First Maturity Size/weight and Sex Ratiomentioning

confidence: 52%

“…Generally the size at first maturity can go from 12 cm such as for Actinopyga echinites (Conand, 1982) to 32.4 cm for Microthele fuscogilva (Conand, 1981), noting that for an important species number the size at first maturity is above 16 cm (Conand, 1981;Dissanayake and Stefansson, 2010;Omar et al, 2013;Natan et al, 2015).…”

Section: First Maturity Size/weight and Sex Ratiomentioning

confidence: 99%

Reproductive activity of three sea cucumber species Holothuria forskali, Holothuria sanctori and Holothuria tubulosa in WSW Alboran Sea, M’diq Bay, Morocco

al.¹

2022

Egypt. J. of Aquatic Biolo. and Fish.

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“…Longitud cm Peso gr. Nuestros resultados representan una primera información sobre el proceso de gametogénesis en Cucumaria californica, para un conocimiento del período de maduración y variación de los órganos reproductores específicamente para hembras, considerando que la mayoría de los estudios concuerdan con el hecho de que el desarrollo gonádico y la reproducción de los holotúridos coincide con la temperatura, abundancia de alimento así como el fotoperiodo como lo demuestran Drumm & Loneragan, 2005;Fajardo-León, et al, 2008;Morgan & Neal, 2012, Omar, et al, 2013.…”

Section: Especieunclassified

Alguns aspectos da oogênese do pepino do mar Cucumaria californica (Semper, 1868) (Echinodermata: Holothuroidea) do Pacífico mexicano / Some aspects to oogenesis from sea cucumber Cucumaria californica (Semper, 1868) (Echinodermata: Holothuroidea) of the mexican Pacific

Chong¹,

Solís-Marín²,

Laguarda-Figueras³

2022

Braz. J. Anim. Environ. Res.

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En este estudio se describe algunos aspectos de la gametogénesis (ovogénesis) del pepino de mar Cucumaria califórnica Semper 1868, especie común de las costas del Pacífico mexicano. El presente estudio tiene como finalidad caracterizar algunos aspectos del ciclo gonádico durante la ovogénesis del pepino de mar Cucumaria californica (Semper, 1868), especie ampliamente distribuida en costas del Pacífico mexicano. Los ejemplares analizados fueron recolectados en aguas someras de las costas de Jalisco, Isla Cocinas, Chamela. Se procesaron 30 ejemplares seleccionando exclusivamente hembras que presentaran estadios en ovogénesis; según literatura la presencia de ovocitos maduros indica que la actividad gonádica se incrementa durante los meses de verano (julio-agosto), la estación en que se realizaron dichas recolectas en nuestra especie de estudio se presentó a finales de otoño (noviembre), bajo esas circunstancias el presente estudio nos lleva a definir parcialmente el ciclo reproductivo visto desde el punto de vista en ovogénesis; describiendo ciclos parciales del índice gonádico caracterizando con ello una escala citológica, checando la maduración gonádica entre hembras de diferentes tallas, no se halló diferencias estadísticamente significativas en cuanto a longitud y peso entre hembras y machos, aun cuando las hembras fueron ligeramente más grandes, examinando principalmente ovocitos primarios, secundarios con algunos pre-vitelos; detectados por medio de exámenes histológicos, revelando tallas promedio entre los 25.03 y 36 µm. Algunos autores manifiestan que factores ambientales controlan la gametogénesis mientras que el desove parece ser desencadenado principalmente por la temperatura y salinidad del agua, así como la disponibilidad de alimento durante el ciclo reproductivo, tales observaciones indican que se puede identificar la variación en la talla de los ovocitos durante el desarrollo gonádico, en el presente estudio se presentan algunos aspectos de la ovogénesis del pepino de mar Cucumaria califórnica con la finalidad de contar con datos específicos como herramienta de estudio en pos de la conservación como recurso económico.

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Reproductive periodicity of sea cucumber Bohadschia vitiensis (Echinodermata: Holothuroidea) in Hurghada area, Red Sea, Egypt

Cited by 17 publications

References 13 publications

Reproductive cycle of the sea cucumber (Isostichopus fuscus) and its relationship with oceanographic variables at its northernmost distribution site

Reproductive cycle of the sea cucumber (Isostichopus fuscus) and its relationship with oceanographic variables at its northernmost distribution site

Reproductive activity of three sea cucumber species Holothuria forskali, Holothuria sanctori and Holothuria tubulosa in WSW Alboran Sea, M’diq Bay, Morocco

Alguns aspectos da oogênese do pepino do mar Cucumaria californica (Semper, 1868) (Echinodermata: Holothuroidea) do Pacífico mexicano / Some aspects to oogenesis from sea cucumber Cucumaria californica (Semper, 1868) (Echinodermata: Holothuroidea) of the mexican Pacific

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