Reproductive biology of Argyrosomus regius (Asso, 1801) inhabiting the south eastern Mediterranean Sea, Egypt

Shabana, Nevine M. Abou; Rahman, Soliman H. Abd El; Absawy, Mohamed A. Al; Assem, Samira S.

doi:10.1016/j.ejar.2012.12.002

Cited by 26 publications

(25 citation statements)

References 21 publications

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“…The present study did not observe any reduction in fecundity or number of hatched larvae with repeated single injections. The capacity to respond to repeated inductions without any decrease in fecundity and hatching appears to give further confirmation that the meagre has the characteristics of a batch spawner (Abou Shabana et al, 2012;Duncan et al, 2012;Schiavone et al, 2012;Gil et al, 2013).…”

Section: Discussionmentioning

confidence: 71%

“…A single GnRHa injection gave a few large spawns and no smaller spawns and Duncan et al (2012) suggested that the differences in spawning pattern between injection and implant were related to the type of ovarian development and spawning strategy. Meagre ovaries have been observed to have all oocyte stages present at one time (Abou Shabana et al, 2012;Duncan et al, 2012;Schiavone et al, 2012;Gil et al, 2013) and ovarian development was described as both group-synchronous (Abou Shabana et al, 2012;Duncan et al, 2012;Schiavone et al, 2012) and asynchronous (Gil et al, 2013); however, all four studies agreed that meagre ovarian development was characteristic of a batch or group-synchronous spawner. In agreement with these batch spawning characteristics, the wild meagre were induced to spawn for a second time (Duncan et al, 2012).…”

Section: Dose-dependent Effect Of a Single Gnrha Injection On The Spamentioning

confidence: 92%

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Dose-dependent effect of a single GnRHa injection on the spawning of meagre (Argyrosomus regius) broodstock reared in captivity

Fernández‐Palacios

Schuchardt

Roo

et al. 2014

Span. j. agric. res.

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Section: Discussionmentioning

confidence: 71%

Section: Dose-dependent Effect Of a Single Gnrha Injection On The Spamentioning

confidence: 92%

Dose-dependent effect of a single GnRHa injection on the spawning of meagre (Argyrosomus regius) broodstock reared in captivity

Fernández‐Palacios

Schuchardt

Roo

et al. 2014

Span. j. agric. res.

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“…This is the case of meagre and other large-sized sciaenids, in which anatomical scales with four levels (Hermas 1995), five levels (Tixerant 1974), six levels (Abou Shabana et al 2012), seven levels (Griffiths 1996) and eight levels (Farmer 2008, Gil et al 2013) have been previously used in describing the male reproductive cycle. In such species, the few studies that used histology sections to assess reproductive parameters did not detail the histological results (e.g.…”

Section: Discussionmentioning

confidence: 99%

“…González-Quirós et al 2011, Prista et al 2011, Abou Shabana et al 2012, Morales-Nin et al 2012, Schiavone et al 2012, Gil et al 2013. Among these are descriptions of the meagre life cycle in the Gulf of Cádiz (González-Quirós et al 2011, Morales-Nin et al 2012, two studies of meagre reproduction in aquaculture facilities (Schiavone et al 2012, Gil et al 2013, and one study that analyses the reproduction of males of wild meagre but with a very limited sample size (Abou Shabana et al 2012).…”

Section: Introductionmentioning

confidence: 99%

Reproductive phase determination in male meagre (<em>Argyrosomus regius</em>, Sciaenidae): testis development and histologic corroboration of a gross anatomical scale

Prista¹,

Gordo²,

Costa³

et al. 2014

Sci. Mar.

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Summary:Reproductive stage determination of male gonads has received sparse attention in fish biology literature with few studies detailing the building of gross anatomical-and histologic scales. The meagre (Argyrosomus regius) is one of the world's largest sciaenids and supports a significant regional fishery in European and North African waters whose reproductive patterns are yet to be fully investigated. In the present study, we derive a macroscopic grading system for meagre testis using semi-quantitative graphs that feature the testis variability along the species size range and time of the year. We then describe the histological stages and reproductive phases of male testes and determine the extent to which they corroborate the anatomical scale. Our results indicate that gross anatomical analyses are accurate in assessments of the meagre spawning season but may not precisely distinguish the testes of well-mature fish and first spawning virgins. Furthermore, we show that milt expression varies widely with size and misclassifies as immature many smaller fish in spawning-capable condition. We discuss these findings in terms of their contribution to the understanding of testes development and the uncertainties involved in determining the size-at-maturity of male fish using gross anatomical scales.Keywords: histology; testes; reproduction; males; validation; Argyrosomus regius.Determinación de la fase reproductiva en los machos de la corvina (Argyrosomus regius, Sciaenidae): desarrollo de los testículos y corroboración de una escala anatómica Resumen: La determinación de la etapa reproductiva de las gónadas masculinas ha recibido escasa atención en la literatura con poca información disponible sobre la construcción de escalas macroscópicas e histológicas. La corvina (Argyrosomus regius) es uno de los más grandes esciaénidos mundiales y registra pesquerías regionales significativas en las aguas europeas y del norte de África pero sus patrones reproductivos han sido poco investigados. En el presente estudio, se deriva un sistema de clasificación macroscópica para los testículos de la corvina utilizando gráficos semi-cuantitativos que contemplan la variabilidad de los testículos respecto al tamaño de los ejemplares a lo largo del año. A continuación se describen las etapas histológicas y fases reproductivas de los machos y se corrobora la escala macroscópica. Nuestros resultados indican que los análisis macroscópicos son exactos en las evaluaciones de la estación de puesta pero pueden no ser capaces de distinguir con precisión los testículos de peces bien maduros y en la primera madurez. Además, se muestra que la expresión de esperma varía con el tamaño del pez lo que puede dar lugar a clasificar erróneamente como inmaduros peces jóvenes que se encuentran en condiciones de puesta. Estos resultados se discuten en términos de su contribución a la comprensión actual del desarrollo de los testículos y de las incertidumbres que rodean el uso habitual de las escalas macroscópicas en la valoración de la talla de madurez d...

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“…Tingkat kematangan gonad ditentukan secara makroskopis (Tabel 1). Gonad ditimbang dengan menggunakan timbangan digital berketelitian 0,0001 g. Bobot gonad dengan bobot tubuh ikan akan dibandingkan untuk menghitung indeks kematangan gonad dengan menggunakan rumus sebagai berikut (Effendie, 1979 Untuk mendapatkan ukuran pertama kali matang gonad dianalisis berdasarkan panjang total yang ditentukan dengan metode pendekatan berdasarkan ukuran morfometrik (Shabana et al, 2012).…”

Section: Bahandanmetodeunclassified

BIOLOGI REPRODUKSI IKAN LIDAH, (Cynoglossus cynoglossus, Hamilton 1822) PISCES: CYNOGLOSSIDAE DI TELUK PABEAN, JAWA BARAT

Gustiarisanie

Rahardjo

Ernawati

2017

BAWAL Widya Riset Perikanan Tangkap

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ABSTRAKIkan Cynoglossus cynoglossus termasuk dalam famili Cynoglossidae yang hidupnya menetap di dasar perairan. Di Teluk Pabean, ikan ini dimanfaatkan oleh masyarakat untuk dikonsumsi sendiri dan untuk dijual. Tujuan penelitian ini adalah untuk mengetahui aspek biologi reproduksi ikan C. cynoglossus yang mencakup ukuran ikan pertama kali matang gonad, musim dan tipe pemijahan. Penelitian dilakukan pada Januari-Desember 2015 di perairan Teluk Pabean, Kabupaten Indramayu. Pengambilan contoh dilakukan setiap bulan sekali dengan menggunakan alat tangkap sero. Diperoleh jenis ikan 613 ekor terdiri dari 290 ekor ikan jantan dan 323 ekor betina. Distribusi ukuran panjang total berkisar Antara 46-117 mm (jantan), 61-126 mm (betina) dengan bobot tubuh berkisar antara 0,57-8,75 g (jantan), dan 2,81-16,72 g (betina). Ukuran ikan betina pertama kali matang gonad pada panjang total 105,5 mm. Ikan ini termasuk pemijah bertahap dengan jumlah telur berkisar antara 2.657-39.647 butir.

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Reproductive biology of Argyrosomus regius (Asso, 1801) inhabiting the south eastern Mediterranean Sea, Egypt

Cited by 26 publications

References 21 publications

Dose-dependent effect of a single GnRHa injection on the spawning of meagre (Argyrosomus regius) broodstock reared in captivity

Dose-dependent effect of a single GnRHa injection on the spawning of meagre (Argyrosomus regius) broodstock reared in captivity

Reproductive phase determination in male meagre (<em>Argyrosomus regius</em>, Sciaenidae): testis development and histologic corroboration of a gross anatomical scale

BIOLOGI REPRODUKSI IKAN LIDAH, (Cynoglossus cynoglossus, Hamilton 1822) PISCES: CYNOGLOSSIDAE DI TELUK PABEAN, JAWA BARAT

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