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Feeding habits of Stellifer rastrifer (Perciformes, Sciaenidae) at Guaratuba mangrove, Parana, Brazil
Chaves, Paulo de Tarso C.;Vendel, Ana Lúcia;
Brazilian Archives of Biology and Technology , 1998, DOI: 10.1590/S1516-89131998000400006
Abstract: feeding habits of stellifer rastrifer (perciformes, sciaenidae) at guaratuba mangrove, parana, brazil, were studied from february 1996 to february 1997. it was observed that its diet was based on invertebrates, mainly decapoda non-brachyura and polychaeta. in a smaller proportion there were plants, copepoda, gammaridea and mollusca. the level of contribution of each food item changed according to the season and the individual size. such plasticity in feeding behaviour was similar to that described to some fish populations from other estuaries, and could be an indicator of the high level of instability presented by this kind of ecosystem.
Aspectos bioecológicos de Stellifer rastrifer (Perciformes: Sciaenidae) na Baía de Santos, SP
Giannini, Roberto;Paiva Filho, Alfredo Martins;
Boletim do Instituto Oceanográfico , 1990, DOI: 10.1590/S0373-55241990000100007
Abstract: as many as 7,260 specimens of the sciaenid stellifer rastriferwqtg collected through a monthly beach seine and bottom trawl survey in the complex bay-estuary of santos and s?o vicente, between march 1985 and may 1986. the occurrence, abundance, length frequency, influence of environmental factors, length-weight relationship, growth, recruitment and mortality were analysed..?, rastrifer occurred year-round and was more abundant and frequent in fall at west side of medium and inner stracta. young of the year was first caught from january to may in deeper water areas and later they were found in shallow areas low with salinity and high temperature. the low catches found in spring may be related to a massive emigration to open sea (summer spawning). s. rastrifer showed higher values for growth coefficient and for total mortality and exploitation rates.
Aspectos bioecológicos de Stellifer rastrifer (Perciformes: Sciaenidae) na Baía de Santos, SP
Giannini, Roberto;Paiva Filho, Alfredo Martins;
Brazilian Journal of Oceanography , 1990, DOI: 10.1590/S1679-87591990000100007
Abstract: as many as 7,260 specimens of the sciaenid stellifer rastriferwqtg collected through a monthly beach seine and bottom trawl survey in the complex bay-estuary of santos and s?o vicente, between march 1985 and may 1986. the occurrence, abundance, length frequency, influence of environmental factors, length-weight relationship, growth, recruitment and mortality were analysed..?, rastrifer occurred year-round and was more abundant and frequent in fall at west side of medium and inner stracta. young of the year was first caught from january to may in deeper water areas and later they were found in shallow areas low with salinity and high temperature. the low catches found in spring may be related to a massive emigration to open sea (summer spawning). s. rastrifer showed higher values for growth coefficient and for total mortality and exploitation rates.
Reproductive biology and spatio-temporal distribution of Stellifer rastrifer, Stellifer naso and Macrodon ancylodon (Sciaenidae) in the Caeté estuary, northern Brazil
Camargo, Mauricio;Isaac, Victoria;
Brazilian Journal of Oceanography , 2005, DOI: 10.1590/S1679-87592005000100002
Abstract: this study analyses the spatial and temporal distribution of the dominant sciaenids in the caeté estuary on the northern coast of brazil. samples were taken by otter trawls in four areas of the caeté estuary between october 1996 and august 1997 six bimonthly. stellifer rastrifer, stellifer naso and macrododon ancylodon presented the highest biomass out of eleven species of sciaenidae caught. minimum and mean length at first maturity were calculated and the main spawning periods determined. changes in the spatio-temporal distribution of the three species were related to seasonal changes in estuarine salinity and spawning pulses. larvae and juveniles of s. rastrifer, s. naso and m. ancylodon were found in the inner estuary while larger specimens were more abundant in the outer estuary with higher salinities. m. ancylodon spawned from october to february and rested from april to august whereas s. rastrifer and s. naso spawned throughout the year, though with two peaks, in october-december and june.
Genetic differentiation of Macrodon ancylodon (Sciaenidae, Perciformes) populations in Atlantic coastal waters of South America as revealed by mtDNA analysis
Santos, Sim?ni;Schneider, Horacio;Sampaio, Iracilda;
Genetics and Molecular Biology , 2003, DOI: 10.1590/S1415-47572003000200008
Abstract: the king weakfish (pescada-gó in portuguese - macrodon ancylodon (sciaenidae), a demersal (bottom-feeding) species found in south america atlantic coastal waters from the gulf of paria in venezuela to baia blanca in argentina, is an economically important species because of its abundance and wide acceptance by consumers. because of its wide distribution this fish may be subject to geographic isolation and this may have resulted in distinct populations along its coastal range. considering that this species represents an important economic resource, confirmation of whether m. ancylodon is a single species or there are different genetic stocks spread over its wide distribution would be an important contribution to conservation policies and population management of the king weakfish. to investigate differences between king weakfish populations we used the cytochrome b and 16s rrna genes to characterize m. ancylodon specimens caught throughout its south american range from venezuela to argentina. our results clearly distinguished two genetically different groups which show nucleotide divergence and genetic structuring patterns that strongly suggest they may be different species, disagreeing with the widely accepted traditional taxonomy that accepts only one species of macrodon in the western atlantic.
Genetic differentiation of Macrodon ancylodon (Sciaenidae, Perciformes) populations in Atlantic coastal waters of South America as revealed by mtDNA analysis  [cached]
Santos Sim?ni,Schneider Horacio,Sampaio Iracilda
Genetics and Molecular Biology , 2003,
Abstract: The king weakfish (pescada-gó in Portuguese - Macrodon ancylodon (Sciaenidae), a demersal (bottom-feeding) species found in South America Atlantic coastal waters from the Gulf of Paria in Venezuela to Baia Blanca in Argentina, is an economically important species because of its abundance and wide acceptance by consumers. Because of its wide distribution this fish may be subject to geographic isolation and this may have resulted in distinct populations along its coastal range. Considering that this species represents an important economic resource, confirmation of whether M. ancylodon is a single species or there are different genetic stocks spread over its wide distribution would be an important contribution to conservation policies and population management of the king weakfish. To investigate differences between king weakfish populations we used the cytochrome b and 16S rRNA genes to characterize M. ancylodon specimens caught throughout its South American range from Venezuela to Argentina. Our results clearly distinguished two genetically different groups which show nucleotide divergence and genetic structuring patterns that strongly suggest they may be different species, disagreeing with the widely accepted traditional taxonomy that accepts only one species of Macrodon in the western Atlantic.
Kudoa sciaenae (Myxozoa: Multivalvulidae) cysts distribution in the somatic muscles of Stellifer minor (Tschudi, 1844) (Pisces: Sciaenidae)
Oliva, Marcelo;Luque, Jose Luis;Teran, Luz;Llican, Leonardo;
Memórias do Instituto Oswaldo Cruz , 1992, DOI: 10.1590/S0074-02761992000100006
Abstract: the distribution of kudoa sciaenae cysts (myxozoa), in terms of intensity and prevalence, in the somatic muscles of the sciaenid stellifer minor, shows an apparent preference for the anterior body region, including the head. the observed preference seems to be a consequence of the differential distribution of muscle mass, in the defined area, because when density (cyst/g dry muscle), is considered, all the somatic areas, but not cephalic area, do no show significant differences in terms of mean intensity and prevalence.
Food categories reconstruction and feeding consumption estimates for the Sciaenid Macrodon ancylodon (Bloch & Schneider), and the congeneric fishes Stellifer rastrifer (Jordan) and Stellifer naso (Jordan) (Pisces, Perciformes) in the Caeté Estuary, Northern Coast of Brazil
Camargo, Mauricio;Isaac, Victoria;
Revista Brasileira de Zoologia , 2004, DOI: 10.1590/S0101-81752004000100015
Abstract: a quantitative method to estimate fish feeding consumption and energy intake from different food categories through the reconstruction of ingested preys based on hard not digestible body structures is presented. in order to establish the equations of the functional relationships between preys weight and body structures, stomachs of 1.086 specimens of macrodon ancylodon (bloch & schneider, 1801), stellifer rastrifer (jordan, 1889), and stellifer naso (jordan, 1889) fish species were dissected. consequently, preys reconstruction enabled a quantitative evaluation of food categories consumption. results indicate a marked difference in diet composition and energy requirements according to fish species ontogenetic development.
The complete mitochondrial genome of the small yellow croaker and partitioned Bayesian analysis of Sciaenidae fish phylogeny
Cheng, Yuanzhi;Wang, Rixin;Sun, Yuena;Xu, Tianjun;
Genetics and Molecular Biology , 2012, DOI: 10.1590/S1415-47572012005000006
Abstract: to understand the phylogenetic position of larimichthys polyactis within the family sciaenidae and the phylogeny of this family, the organization of the mitochondrial genome of small yellow croaker was determined herein. the complete, 16,470 bp long, mitochondrial genome contains 37 mitochondrial genes (13 protein-coding, 2 ribosomal rna and 22 transfer rna genes), as well as a control region (cr), as in other bony fishes. comparative analysis of initiation/termination codon usage in mitochondrial protein-coding genes of percoidei species, indicated that coi in sciaenidae entails an atg/aga codon usage different from other percoidei fishes, where absence of a typical conserved domain or motif in the control regions is common. partitioned bayesian analysis of 618 bp of coi sequences data were used to infer the phylogenetic relationships within the family sciaenidae. an improvement in harmonic mean -lnl was observed when specific models and parameter estimates were assumed for partitions of the total data. the phylogenetic analyses did not support the monophyly of otolithes, argyrosomus, and argyrosominae. l. polyactis was found to be most closely related to collichthys niveatus, whereby, according to molecular systematics studies, the relationships within the subfamily pseudosciaenidae should be reconsidered.
Metazoos parásitos de la mojarrilla Stellifer minor (Tschudi) (Osteichthyes, Sciaenidae) capturados por pesquería artesanal en Chorrillos, Lima, Perú
Iannacone, José;
Revista Brasileira de Zoologia , 2004, DOI: 10.1590/S0101-81752004000400015
Abstract: a research on some community components of parasitefauna of 105 specimens of stellifer minor (tschudi, 1844) collected from chorrillos fishmarket, lima, peru, between may and october 1998 and necropsied to study parasite communities was conducted. of the fishes collected, 71 were males and 34 females. fishes showed a standard length between 10.20 and 20.50 cm (mean = 15.50 ± 1.65). metazoan parasites were collected and counted employing conventional techniques. 3483 specimens in total during all the survey, with a mean abundance of 33.17 (3-122) were collected. the mean parasite species richness was 1.9 (1-4). one host was not parasited. twenty hosts (19.04%) showed infection with one parasite species, and seventy-seven (73.33%) and seven (6.66%) had multiple infection, two and three parasite species, respectively. five parasites: rhamnocercus oliveri luque & iannacone, 1991 and r. stelliferi luque & iannacone, 1991 (monogenea) (prevalence = 98.09%; mean intensity = 28.85; mean abundance = 28.58), clavellotis dilatata (kroyer, 1863) (copepoda) (prevalence = 2.85%; mean intensity = 1; mean abundance = 0.02), helicometra fasciata (rudolphi, 1819) (digenea) (prevalence = 79.04%; mean intensity = 5.66; mean abundance = 4.47) and procamallanus (spirocamallanus) pereirai annereaux, 1946 (nematoda) (prevalence = 4.76%; mean intensity = 1.6; mean abundance = 0.07) were found. effect of the sex on mean intensity and abundance of infection of rhamnocercus monaco, wood & mizelle, 1954 and also effect of sex with mean abundance of infection with h. fasciata were found. the mean diversity in the infracommunities of s. minor was (h') = 0.11 and simpson index (c) = 0.98. finally, the results of community assemblages with the parasite communities registered on s. minor ten years ago in the same locality of study were compared.
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