Regional variation in the life history of the canary drum Umbrina canariensis (Sciaenidae), in South African waters

Hutchings, K; Griffiths, Matthew; Field, J. G.

doi:10.1016/j.fishres.2005.10.011

Cited by 11 publications

(13 citation statements)

References 36 publications

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“…(Bromley, 2003). This is recorded for most marine sciaenids (Lowerre-Barbieri et al, 1996;Hutchings et al, 2006). However, the opposite was recorded for freshwater sciaenids, as observed in this study for P. magdalenae (305 mm and 269 mm for males and females, respectively), and obtained by Castro (1999) and Marciano et al (2005) for P. squamosissimus.…”

Section: Discussionsupporting

confidence: 66%

Reproductive biology of Plagioscion magdalenae (Teleostei: Sciaenidae) (Steindachner, 1878) in the bay of Marajo, Amazon Estuary, Brazil

2010

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Plagioscion magdalenae (pacora) is a commercially important benthopelagic sciaenid and widely distributed in the Amazon River basin. The present study describes the reproductive biology of this species in the bay of Marajo, Amazon Estuary, Brazil. The gonadal development stage, age and size at first sexual maturity (L 50 ), sex ratio, and reproductive strategy were determined. The data were collected bi-monthly from December 2005 to October 2006. A total of 251 specimens were examined, with the total length (TL) ranging between 220 and 590 mm. The weight-length relationship for females, males and grouped sexes was highly significant, showing a positive allometry. The L 50 was of 279 mm for grouped sexes, with 305 mm and 269 mm TL for females and males respectively. The sex ratio for the total number of individuals favored the males (2.02 males: 1 female). Macroscopically, the gonads were classified as immature, maturing, mature and spent. Considering the macro and microscopic evaluation of the gonads, an extended spawning period, mainly in August to February, was observed.Plagioscion magdalenae (pescada-curuca) é um sciaenídeo bentopelágico, de importância comercial, amplamente distribuído na bacia do rio Amazonas. O objetivo deste trabalho foi descrever a biologia reprodutiva dessa espécie na baía do Marajó, estuário Amazônico, Brasil. Neste estudo foi determinado o estádio do desenvolvimento gonadal, tamanho de primeira maturação gonadal (L 50 ), proporção entre sexos, época e o tipo de desova. A coleta foi realizada bimestralmente no período de dezembro de 2005 a outubro de 2006. Foi examinado um total de 251 exemplares, variando entre 220 e 590 mm de comprimento total (CT). A relação peso-comprimento para fêmeas, machos e sexos agrupados foi altamente significativa, com alometria positiva. O L 50 foi de 279 mm considerando sexos agrupados, 305 e 269 mm CT para fêmeas e machos respectivamente. A proporção entre sexos para o total de indivíduos foi favorável aos machos (2,02 machos: 1 fêmea). Macroscopicamente, as gônadas foram classificadas em imatura, em maturação, matura e desovada. Considerando-se as avaliações macro e microscópicas das gônadas, foi registrado um período prolongado de desova, principalmente entre agosto e fevereiro.

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Section: Discussionsupporting

confidence: 66%

Reproductive biology of Plagioscion magdalenae (Teleostei: Sciaenidae) (Steindachner, 1878) in the bay of Marajo, Amazon Estuary, Brazil

2010

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“…A lack of population synchrony in gonadal development can also be observed, with not all the breeders showing the same ovarian maturity stage in a month. this extended breeding season appears to be typical of sciaenids in subtropical waters (druzhinin, 1974), and as does spawning in spring and summer (Wilson and nieland, 1994;lowerre-Barbieri et al, 1996;Francescon and Barbaro, 1999;Fennesy, 2000;macchi et al, 2003;roumillat and Brouwer, 2004;Hutchings et al, 2006;Yamaguchi et al, 2006). results from our histological data contrast with those from tunisian waters that suggested a shorter spawning period, i.e.…”

Section: Reproductive Patterncontrasting

confidence: 58%

“…eggs are released in batches over a relatively protracted period (mayer et al, 1990;. most of the commercially important cold and temperate water fishes are batch spawners and all the Sciaenidae studied are group-synchronous or asynchronous batch spawners (Wilson and nieland, 1994;lowerre-Barbieri et al, 1996;Barbaro et al, 2002;macchi et al, 2003;roumillat and Brouwer, 2004;Hutchings et al, 2006;Yamaguchi et al, 2006;dadzie, 2007). Gonads were classified in seven developmental stages based on histological analysis.…”

Section: Reproductive Patternmentioning

confidence: 99%

“…moreover, its moderate longevity (15-21 years, Chauvet, 1991) indicates that the species may be vulnerable to overexploitation (Hutchings et al, 2006). in spite of this there is no minimum legal length for captures of this species in Balearic waters, with the exception of some marine reserves in which the minimum legal size is 34.5 cm tl.…”

Section: Hsi and Energy Statusmentioning

confidence: 99%

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Biología reproductiva de la especie vulnerable <i>Sciaena umbra</i> Linnaeus, 1758 (Pisces: Sciaenidae)

Grau¹,

Linde²,

Grau³

2008

Sci. Mar.

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2 imedeA (CSiC-uiB), instituto mediterráneo de estudios Avanzados, C/ miquel marquès 21, 07190, esporles, Spain.SummArY: reproductive biology of the brown meagre, Sciaena umbra, is described based on 171 specimens caught by trammel nets and spear gun from April 1998 to october 2000. Histological examination and gonadosomatic index suggest that the spawning season of the brown meagre in Balearic waters is from may to August and peaks in may and June. Seven stages of gonadal development were identified: immature, early developing, late developing, running, spent, recovering and resting. the frequency distribution of oocyte diameter reveals that brown meagre is an iteroparous, gonochoristic, seasonal multiple-spawning fish with aynchronous oocyte development. Size at first maturity was 25.4 cm of total length for males and 29.9 cm for females. Sex ratio varied with fish size, with a tendency for greater numbers of females in higher size classes. Weight-length relationships for both sexes, as well as for the total population, were significantly allometric positive. An analysis of the monthly variations of hepatosomatic index (HSi), and le Cren's condition factor showed that HSi is not a good indicator of the lipid reserves of S. umbra. According to our results, current management measures for this species should be re-evaluated.Keywords: Sciaena umbra, teleostean fishes, reproduction, spawning period, histology, mediterranean Sea, Balearic islands.reSumen: Biología reproductiva de la especie vulnerable Sciaena umbra Linnaeus, 1758 (Pisces: Sciaenidae).-Se ha estudiado la biología reproductiva de Sciaena umbra a partir de ejemplares capturados mediante trasmallo y arpón durante el periodo 1998-2000. el examen histológico y el índice gonadosomático sugieren que la época de puesta del corvallo en Baleares comprende los meses de mayo a agosto, presentando un pico de actividad reproductiva de mayo a junio. Se han identificado siete estadios de desarrollo gonadal: inmaduros, en desarrollo inicial, en desarrollo final, en puesta, agotamiento, recuperación y reposo. la frecuencia de distribución del diámetro del ovocito muestra que el corvallo es una especie iterópara, gonocórica, estacional, de múltiples puestas y desarrollo ovocitario asincrónico. la talla de primera madurez fue de 25.4 cm (longitud total) para los machos y de 29.9 cm para las hembras. la proporción de sexos varió en relación a la talla, con tendencia a favor de las hembras al aumentar la talla. la relación talla-peso de ambos sexos y de la población, fue alométrica positiva. el estudio de las variaciones mensuales en el índice hepatosomático (iHS) y el índice de condición de le Cren indicó que el iHS no es un buen indicador de las reservas lipídicas de S. umbra. Según nuestros resultados, las medidas actualmente vigentes para esta especie deberían ser revisadas.

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“…eggs are released in batches over a relatively protracted period (Mayer et al 1990, Murua and. All of the other Sciaenidae that have been studied to date show the same type of ovarian development (Wilson and Nieland 1994, Lowerre-Barbieri et al 1996, Barbaro et al 2002, Macchi et al 2003, Roumillat and Brouwer 2004, Hutchings et al 2006, Yamaguchi et al 2006, Dadzie 2007, Grau et al 2009, Lim et al 2010. However, meagre ovarian development has been qualified as group-synchronous by Duncan et al 2012, although histological examinations were not applied.…”

Section: Discussionmentioning

confidence: 99%

Reproductive strategy and fecundity of meagre <i>Argyrosomus regius</i> Asso, 1801 (Pisces: Sciaenidae): implications for restocking programs

Gil¹,

Grau²,

Basilone³

et al. 2013

Sci. Mar.

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SUMMARY: Because the meagre (Argyrosomus regius) is not currently found around the Balearic Islands (western Mediterranean), the Balearic government is carrying out a restocking programme to recover its population. The success of this programme is critically dependent on improved knowledge of the meagre's life cycle, and particularly its reproductive biology. Data on key reproductive parameters based on both reared and wild specimens are reported here. Histological examinations and gonadosomatic indices from 342 reared specimens demonstrated that 1) the potential reproductive season ranged from April to June and peaked in May, and 2) length at maturity (L 50 ) was 49.3 cm for males and 57.2 cm for females, age at maturity (A 50 ) was 2.7 years for males and 3.5 years for females, and weight at maturity (W 50 ) was 1396 g for males and 1892 g for females. Histological examinations of 37 wild fish from Cádiz (SW Spain) demonstrated that the meagre has determinate fecundity. The annual potential fecundity of reared females ranged from 0.9 to 4.2 million oocytes, which is exponentially dependent upon female size.Keywords: Argyrosomus regius, length at maturity, age at maturity, reproductive season, potential fecundity, Mediterranean Sea.RESUMEN: EstratEgia rEproductiva y fEcundidad En corvinas Argyrosomus regius asso, 1801 (piscEs: sciaEnidaE): implicacionEs En programas dE rEpoblación. -La corvina (Argyrosomus regius) actualmente no se encuentra en las Islas Baleares (Mediterráneo Occidental) y, por tanto, se están realizando esfuerzos para recuperar su población a través de un programa de repoblación que se está llevando a cabo por el Gobierno Balear. El éxito del programa de recuperación depende fundamentalmente de la mejora de los conocimientos del ciclo de vida de la corvina, y en particular de su biología reproductiva. Este estudio presenta datos sobre los principales parámetros reproductivos de la especie, basándose tanto en ejemplares criados en cautividad como salvajes. Los exámenes histológicos e índices gonadosomáticos de 342 especímenes criados en cautividad demostraron lo siguiente: 1) la potencial época de puesta se extendió de abril a junio y alcanzó su punto máximo en mayo, y 2) la talla de madurez (L 50 ) fue de 49.3 cm para los machos y 57.2 cm para las hembras, la edad de madurez (A 50 ) fue de 2.7 años para los machos y 3.5 años para las hembras, y el peso de madurez (W 50 ) fue de 1396 g para los machos y 1892 g para las hembras. Los exámenes histológicos de 37 peces salvajes procedentes de Cádiz (SO de España) demostraron que la corvina tiene fecundidad determinada. La fecundidad potencial anual de las hembras criadas en cautividad, la cual está exponencialmente relacionada con el tamaño de la hembra, osciló entre 0.9 y 4.2 millones de ovocitos.Palabras clave: Argyrosomus regius, talla de madurez, edad de madurez, época reproductiva, fecundidad potencial, mar Mediterráneo.

show abstract

Regional variation in the life history of the canary drum Umbrina canariensis (Sciaenidae), in South African waters

Cited by 11 publications

References 36 publications

Reproductive biology of Plagioscion magdalenae (Teleostei: Sciaenidae) (Steindachner, 1878) in the bay of Marajo, Amazon Estuary, Brazil

Reproductive biology of Plagioscion magdalenae (Teleostei: Sciaenidae) (Steindachner, 1878) in the bay of Marajo, Amazon Estuary, Brazil

Biología reproductiva de la especie vulnerable <i>Sciaena umbra</i> Linnaeus, 1758 (Pisces: Sciaenidae)

Reproductive strategy and fecundity of meagre <i>Argyrosomus regius</i> Asso, 1801 (Pisces: Sciaenidae): implications for restocking programs

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