Alternative reproductive styles in seabreams (Pisces: Sparidae)

Buxton, CD; Garratt, P.A.

doi:10.1007/bf00751031

Cited by 158 publications

(147 citation statements)

References 44 publications

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“…Average length at capture was different for both sexes, with males having a larger mean size than females, which is in agreement with the results of other authors (Perodou and Nedelec, 1980;Soletchnik, 1983;Lozano et al, 1990 andBalguerías et al, 1993), and once more is probably a consequence of sequential hermaphroditism. As Buxton and Garratt (1990) stated for South African protogynous sparids, the sex reversing individuals have a size intermediate between the two sexes.…”

Section: Discussionmentioning

confidence: 63%

The reproductive biology of <i>Spondyliosoma cantharus</i> (L.) from the SW Coast of Portugal

Gonçalves¹,

Erzini²

2000

Sci. Mar.

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SUMMARY: The study of Spondyliosoma cantharus (L.) reproduction was carried out within the framework of a project on the fisheries resources of the south-west coast of Portugal, and was based on the analysis of the spawning season, gonad maturation, size-at-maturity, fecundity, and hermaphroditism. Spawning took place from February to April, peaking in March. Analysis of the sex ratio by size class and season showed that females were more abundant throughout the year (M/F=0.57) and in the smaller size classes. Overall size at first maturity (L 50 ) was 20.10 cm total length (TL), with a significant difference between males (22.41 cm, TL) and females (19.98 cm, TL). Absolute fecundity (Fa) ranged from 37,506 to 112,074 oocytes, with a mean of 61,396. A power type relationship best described the relationships between absolute fecundity and TL (Fa = 436.27TL1.575 ), and somatic weight (Fa = 2979.7SW 0.585 ). The number of oocytes/g of female somatic weight ranged from 217 to 549, with a mean of 346. The reproductive strategy of this species is characterised by protogynic hermaphroditism, as indicated by the presence of individuals in transition and of testes with vestiges of preceding ovaries associated with the significant differences in the size frequency distributions of the sexes. MATERIALS AND METHODSThis study was based on a monthly sampling program from December 1992 through March 1994, from the landings of the inshore artisanal fishery based in Sagres, Portugal (Fig. 1). The sampled fleet is characterised by small inshore boats with one or two fishermen using a small hook longline (hook size nº13, "Mustad" brand) of approximately 1200-1300 hooks baited with squid (Loligo sp.).A total of 368 S. cantharus were collected randomly from the longline fleet. The samples were immediately transported to the laboratory where the following were recorded for each individual fish: total length (TL; to the nearest lower 0.5 cm); total weight (TW; ± 0.01g); eviscerated weight (EW; ± 0.01g); sex (visual and compound microscope evaluation of general characteristics); state of maturity (determinated by macroscopic evaluation when possible, based on the maturity scales presented in Table 1) and gonad weight (GW; ± 0.01g). The accuracy of macroscopic stages was assessed by histological analysis.The gonadosomatic index (GSI = gonad weight / eviscerated weight) x 100) was calculated. The monthly trend for mean GSI values and the proportion of spawning specimens (maturity stages V for males and VI for females) over a 16 month period were used to determine the spawning season for the SW Coast of Portugal. The spawning season was established as the period during which the highest values of the GSI coincided with the highest percentages of sexually mature individuals. The start of the spawning season was compared with two environmental variables: sea surface temperature (SST) and the number of hours of day light.The sex ratio (ratio of the number of males to females) and sex proportion by length class intervals (0.5 cm) were determ...

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Section: Discussionmentioning

confidence: 63%

The reproductive biology of <i>Spondyliosoma cantharus</i> (L.) from the SW Coast of Portugal

Gonçalves¹,

Erzini²

2000

Sci. Mar.

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“…Cameras were installed in each tank 5 cm under the water surface and adjusted to rius nufar) (Buxton & Garratt, 1990;Garratt, 1991), roman seabream (Chrysoblephus laticeps) (Buxton, 1990), silver bream (Rhabdosargus sarba) (Leu, 1994) and southern black bream (Acanthopagrus butcheri) (Mylonas et al, 2011). Although there was variation among species a general similarity was observed (see review in Mylonas et al, 2011).…”

Section: Video and Observations Of The Reproductive Behaviourmentioning

confidence: 99%

“…Spawning was usually early morning (dawn) or early evening (dusk) (06:00 and 19:00, respectively). Courtship consisted of males pursuing and nudging females, a tight circling swimming behaviour to form aggregations before spawning, which consisted of a spawning rush usually either to perform pair spawning involving a single pair (a male and a female) or group spawning a single female followed by multiple males (Smith, 1986;Buxton & Garratt, 1990;Garratt, 1991;Leu, 1994;Mylonas et al, 2011).…”

Section: Video and Observations Of The Reproductive Behaviourmentioning

confidence: 99%

“…The following types of behaviours and observations were described from the videos: i) pre-spawning interactions between individuals or in a group, ii) the behaviour directly associated with gamete liberation, iii) fish aggregation patterns and duration, iv) number of fish participating in each spawn (pair or group spawning) and the sex proportion per spawn, v) the frequency, duration and position of fish in tank when spawning and vi) estimation of the average distance (estimated from known distances between reference points in the tank) of the spawning rush. These parameters were selected in accordance to previous work realized on Sparidae species (Smith, 1986;Buxton & Garratt, 1990;Garratt, 1991;Leu, 1994;Mylonas et al, 2011) and in particular terminology defined by Domeier & Colin (1997) was used to describe behaviours and actions. These included the following definitions of types of spawning from Domeier & Colin (1997) …”

Section: Pre-spawning Behaviourmentioning

confidence: 99%

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Mating behaviour and gamete release in gilthead seabream (Sparus aurata, Linnaeus 1758) held in captivity

Ibarra-Zatarain

Duncan

2015

Span. j. agric. res.

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The present study aimed to describe the reproductive behaviour of gilthead seabream (Sparus aurata) in captivity. Twenty-four mature gilthead seabream, divided in two tanks, were utilized for the present study. Reproductive behaviour was recorded using submersibles cameras. A total of 67 spawning events were analysed. The mean duration time that gilthead seabream spent spawning was 54 ± 4 min/day, during which mean number of individual spawning events was 5.6 ± 0.2. The mean volume of eggs produced by both broodstocks was 405 ± 13.4 mL with a fertilization rate of 91.6 ± 0.4%. The reproductive behaviour began with a schooling behaviour and then forming light aggregations. From an aggregation or an encounter while swimming freely a female initiated a spawning rush followed by one or more males to gametes liberation. The spawning rush was brief, 1.6 ± 0.5 sec, over an approximately 1.7 ± 0.2 m distance from the tank bottom to the water surface. Pair spawning, between a single female and male, was the most common (71.6%). Group spawning was less common and involved a single female spawning with two males (22.5%) or three males (4.9%). Spawning rushes involving more than one female were not observed. Gilthead seabream in the present study presented a tendency to pair spawn and eggs collected as a "spawn" were actually the sum of many separate spawning events over a short time period. This is the first description of gilthead seabream spawning and the findings help to understand microsatellite based observations of spawning kinetics. Additional key words: mate selection; pair group mass spawning; rush; aggregation Citation: Ibarra-Zatarain, Z.; Duncan, N. (2015). Mating behaviour and gamete release in gilthead seabream (Sparus aurata,

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“…As a consequence, considerable research effort has focused on aspects of the life history of the more important target species (e.g. Smale 1988, Buxton 1989, Buxton and Garratt 1990, Buxton and Clarke 1991, 1992, Smale and Punt 1991, Griffiths 1996a, Mann and Buxton 1997.…”

mentioning

confidence: 99%

Catch and effort of the shore and skiboat linefisheries along the South African Eastern Cape Coast

Brouwer

Buxton²

2002

South African Journal of Marine Science

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Alternative reproductive styles in seabreams (Pisces: Sparidae)

Cited by 158 publications

References 44 publications

The reproductive biology of <i>Spondyliosoma cantharus</i> (L.) from the SW Coast of Portugal

The reproductive biology of <i>Spondyliosoma cantharus</i> (L.) from the SW Coast of Portugal

Mating behaviour and gamete release in gilthead seabream (Sparus aurata, Linnaeus 1758) held in captivity

Catch and effort of the shore and skiboat linefisheries along the South African Eastern Cape Coast

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