Synopsis of biological data on the red porgy, Pagrus pagrus (Linnaeus) /

Manooch, Charles S.; Hassler, William W.

doi:10.5962/bhl.title.63258

Cited by 32 publications

(43 citation statements)

References 3 publications

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“…S. emarginatum, a southern African endemic sparid, is another exception, (Beckley, 1989), although this is probably a case of a gonochoristic species (Penrith, 1972). Nevertheless there are more sparid species with the same hermaphroditic reproduction strategy, such as Pagellus erythrinus (D'Ancona, 1949;Larrañeta, 1964;Girardin and Quignard, 1985) and Pagrus pagrus (Manooch III and Hassler, 1978;Alekseev, 1982Alekseev, , 1983.…”

Section: Discussionmentioning

confidence: 99%

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: 99%

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

Gonçalves¹,

Erzini²

2000

Sci. Mar.

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“…The red porgy is an Atlantic and Mediterranean species (Manooch & Hassler 1978). A few specimens measuring from 11 to 50 cm total length and 705 g mean weight occurred in 6 hauls at depths < 185 m and bottom temperatures from 15 to 17 "C. It migrates to southern Brazil in winter together with cold waters on the mid-shelf (Yesaki & Barcellos 1974, Haimovici 1991.…”

Section: Species Compositionmentioning

confidence: 99%

Demersal bony fish of the outer shelf and upper slope of the southern Brazil Subtropical Convergence Ecosystem

Haimovici¹,

Martins²,

Figueiredo³

et al. 1994

Mar. Ecol. Prog. Ser.

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ABSTRACT. Ninety-three species of bony fishes were caught in 4 seasonal bottom-trawl surveys carried out between July 1986 and May 1987 on the outer shelf and upper slope (124 to 587 m depth) along the southern Brazilian coast (30°40' to 34"30' S). On the outer shelf (< 179 m), the demersalpelagic species Trichiurus lepturus, Trachurus lathami, Cynoscion guatucupa, Scomber japonicus, and Thyrsitops lepidopoides predominated and also to a lesser degree the demersal benthonic Umbrina canosai and Mullus argentinae. Antiyonia capros and Priacanthus arenatus were found associated with the relic coral hard bottoms of the shelf break (180 to 249 m). Further offshore, the demersal-pelagic species Ariomma bondi and Zenopsis conchifera and the demersal benthonic species Polyprion americanus and Helicolenus lahillei were abundant, both associated with rocky bottoms. The macrourids Coelorinchus marinii and Malacocephalus occidentalis characterized deep-water hauls p 4 5 0 m). Frequent and widespread, but less abundant in the catch, were Polymixia lowei, Urophycis mystacea and Merluccius hubbsi. Mean total catch (kg h-') decreased 6-fold and the number of species by more than half along the depth range, with a sharp step at 350 m. Both catch and number of species were slightly higher in the winter cruises. Most species occurred in both winter and summer-autumn cruises, but, with increasing depth, the relative abundance of species that occur year-round decreased, whereas fishes that occur mostly in winter increased. The catch of demersal-pelagic fish decreased sharply below 350 m and differed little among seasons; catches of demersal-benthonic fish were more evenly distributed across the depth range and were larger in winter and spring. The high number of species on the shelf break may be attributable to the higher variety of soft and consolidated substrates and the overlapping of different water masses along the water column. The north-south shift of the western boundary of the Subtropical Convergence appears to be mainly responsible for the seasonal changes in abundance of the species.

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“…This species is widely distributed in the Eastern Atlantic from the British Isles south to the coastal zone of Angola, and also in the Mediterranean and the Adriatic Sea. In the Western Atlantic, P. pagrus is distributed from the coast of New York, USA, to southern Argentina (MANOOCH; HASSLER, 1978;MENEZES;FIGUEIREDO, 1980).…”

Section: Introductionmentioning

confidence: 99%

Parasite community of Pagrus pagrus(Sparidae) from Rio de Janeiro, Brazil: evidence of temporal stability

Soares

Vieira

Luque

2014

Rev. Bras. Parasitol. Vet.

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One hundred specimens of Pagrus pagrus were necropsied for parasitological study between January and February 2012. These data were compared with data from 90 specimens that had been examined in the year 2000. The fish were collected from Cabo Frio (21-23 ° S, 41-45 ° W), in the state of Rio de Janeiro, Brazil. In the current study a total of 19 parasite species were collected. Sixteen of these were collected in the samples of both 2012 and 2000, thus totaling 25 parasite species in the two studies. All the results were similar to those of the previous study with regard to: dominance of anisakid nematode larvae; correlation between abundance of parasites and host body size; absence of correlations between the size of parasite infrapopulations and host sex; and scarcity of interspecific associations. The only difference between the studies was in the abundance values for Anisakidae, which could be correlated with the seasonal factor of the collection period, which was concentrated in the summer. This is also the period of the South Atlantic Central Water (SACW) phenomenon, during which there is greater host reproductive activity. Therefore, significant stability of the metazoan community structure of P. pagrus was shown.Keywords: Pagrus pagrus, parasites, community structure, marine fish, temporal stability. ResumoCem exemplares de Pagrus pagrus foram necropsiados entre janeiro e fevereiro de 2012 para estudos parasitológicos. Esses dados foram comparados com dados de 90 espécimes examinados no ano 2000. Os peixes foram coletados em Cabo Frio (21-23 ° S, 41-45 ° W), no Estado do Rio de Janeiro, Brasil. No presente estudo, foram coletados um total de 19 espécies de parasitos, 16 delas foram coletadas em comum nas amostras de 2012 e 2000, dando um total de 25 espécies de parasitos. Todos os resultados foram semelhantes aos do estudo anterior em: dominância das larvas de anisaquídeos; correlação entre a abundância de parasitos e comprimento total do corpo dos hospedeiros; ausência de correlações entre o tamanho das infrapopulações parasitárias e sexo do hospedeiro e a escassez de associações interespecíficas. A única diferença entre os estudos reside nos valores da abundância de nematóides anisaquídeos, o que poderia ser correlacionado com o fator sazonal do período de coleta que foi concentrada no verão, período que coincide com o fenômeno da Água Central do Atlântico Sul (ACAS), no qual o hospedeiro apresenta maior atividade reprodutiva. Portanto, uma significativa estabilidade da estrutura da comunidade de parasitos de P. pagrus foi evidenciada.Palavras-chave: Pagrus pagrus, parasitas, estrutura da comunidade, peixe marinho, estabilidade temporal.

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Synopsis of biological data on the red porgy, Pagrus pagrus (Linnaeus) /

Cited by 32 publications

References 3 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

Demersal bony fish of the outer shelf and upper slope of the southern Brazil Subtropical Convergence Ecosystem

Parasite community of Pagrus pagrus(Sparidae) from Rio de Janeiro, Brazil: evidence of temporal stability

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