Consulta: subjectFacets:"Meristic counts"
Registros recuperados: 12
Data/hora: 11/06/2024 11:15:21

Características morfométricas y merísticas del bonito argentino
Provedor de dados: 20
Autores: Hansen, J.E.
Collete and Chao (1975) reviewed the systematic and morphology of the Genus Sarda and relatives ((Tribe Sardini), including into their analysis a few S.sarda from the SW Atlantic. Before that, Demir (1964)dealt with the meristic data of the same species from the Black Sea. This paper in concerned with the featuring of the bonito caught in Argentina, from both a morphometric and a meristic point of view. The study made the differences reported by Collette and Chao (op.cit.)among W and E S.sarda populations to be more conspicuous, because our samples had even lower values han those from the NW.
Tipo: Journal Contribution
Palavras-chave: Meristic counts; Morphometry.
Ano: 1988
URL: http://hdl.handle.net/1834/1966

Morphological identification of two southwest Atlantic loliginid squids: Loligo gahi and Loligo sanpaulensis
Provedor de dados: 20
Autores: Pineda, S.E.; Hernandez, D.R.; Brunetti, N.E.; Jerez, B.
Morphological characters of two loliginid squids, Loligo gahi and Loligo sanpaulensis, in the SW Atlantic region off Argentina were studied to obtain a diagnostic criterion for their identification. Emphasis was placed on the taxonomic characters suitable to identify individuals in the whole size range. Considering the uncertainty associated to the correct identification of juveniles, their taxonomic status was confirmed using electrophoretic studies. Discrimination between species based on morphological characters proved to be more effective than meristic counts. A discriminant function that allows an easy separation of the two species is presented. The function, composed of two indices: fin width mantle length (FW/ML)and gladius width mantle length...
Tipo: Journal Contribution
Palavras-chave: Meristic counts; Morphometry; Electrophoresis; Electrophoresis; Http://aims.fao.org/aos/agrovoc/c_2523.
Ano: 2002
URL: http://hdl.handle.net/1834/1583

Les analyses statistiques multivariées : application sur deux espèces de Soleidea des cotes Tunisiennes
Provedor de dados: 20
Autores: Glid, A.; Mosbah, S.; Ghorbel, M.; Bradai, M.N.
Une analyse statistique multivariée a été entreprise sur la base de 11 caractères métriques et 10 caractères méristiques de 3 échantillons de Soleidae appartenant à 2 espèces différentes en provenance de 3 localités distinctes : S. aegyptiaca de Sfax et de Djerba et S. senegalensis de Bizerte. Cette étude a montré une différence significative de certains caractères entre les deux espèces d’une part et au sein de la même espèce péchée dans 2 localités différentes. Le recours aux fonctions canoniques a permis d’élaborer des équations pouvant classer un échantillon dans l’espèce adéquate et dans la localité de sa capture. Une étude complémentaire intégrant toutes les espèces de cette famille, morphologiquement très semblable, pourrait être une méthodologie de...
Tipo: Journal Contribution
Palavras-chave: Animal morphology; Fishery regulations; Fishing rights; Meristic counts; Multivariate analysis; Statistical analysis; Taxonomy; Variance analysis; Fishery policies.
Ano: 2009
URL: http://hdl.handle.net/1834/4488

Comparación mediante el empleo de los caracteres merísticos y el crecimiento de caballas originarias de varias regiones geográficas (Cataluña, Islas Canarias y Sudamerica)
Provedor de dados: 20
Autores: Perrotta, R.G.
Mackerel from SW Atlantic (22° -39°S) and the coast of Cataluña (42° 30'N) were compared by analizing both morphometric and meristic characters. A multivariate analysis, i.e. principal components was used. The growth curves corresponding to mackerels from different regions (Canarias, North of Chile, Mar del Plata and Rincón in Argentine) were also compared, as well as the mean length at ages 1 and 2 (Mar del Plata- Cataluña, Rincón- Cataluña). Significant differences in the growth were found between two groups. The first group was integrated by three SW Atlantic population (Brasil, Mar del Plata, Rincón), which possible conform a subspecies of Scomber japonicus. The second one was represented by the coastal mackerel off Cataluña.
Tipo: Journal Contribution
Palavras-chave: Morphometry; Meristic counts; Growth; Multivariate analysis; Growth; Multivariate analysis; Http://aims.fao.org/aos/agrovoc/c_3394; Http://aims.fao.org/aos/agrovoc/c_28921.
Ano: 1993
URL: http://hdl.handle.net/1834/2570

Revisión taxonómica y análisis de los caracteres morfométricos y merísticos de la sardina fueguina (Sprattus fuegensis)Jenyns, 1842 (Pisces, Clupeidae)
Provedor de dados: 20
Autores: Cousseau, M.B.
This paper is based on the study of 484 specimens collected off three different districts of Santa Cruz (Caleta Olivia, Puerto Deseado and Río Gallegos)and the northern coastal region of Malvinas Islands. The following items have been developed: -a brief description of the clupeoids present in the southern patagonic area where the sardine lives, and a key to their identification; -the updated systematic position of the species and its bibliographical references; -a description of the external morphology; -a statistical analysis of morphometric and meristic character; and geographic distribution and movements. It is possible to presume the existence of two geographically separated groups, one in the coasts off Santa Cruz Province and another around Malvinas...
Tipo: Journal Contribution
Palavras-chave: Stock identification; Meristic counts; Geographical distribution; Sardine fisheries; Geographical distribution; Http://aims.fao.org/aos/agrovoc/c_5083.
Ano: 1982
URL: http://hdl.handle.net/1834/2054

Caractérisation et variation phénotypique et biologique des deux sexes du sandre "Sander lucioperca" (l., 1758) (teleosteen, percidae) dans la retenue de barrage de Nebhana (Tunisie Centrale).
Provedor de dados: 20
Autores: Turki, O.; M'Hetli, M.; Chriki, A.; Kraiem, M.M.
Dans le but de caractériser phénotypiquement et biologiquement la population de sandre (Sander lucioperca (L, 1758)), et de détecter une éventuelle variabilité entre les sexes, une étude des variables méristiques et morphométriques ainsi que la croissance, a concerné 133 mâles et 166 femelles issus de la retenue de barrage de Nebhana. Le choix des variables méristiques et morphométriques a été décelé à partir de travaux bibliographiques montrant un taux important de variabilité chez les poissons marins et d'eau douce. Ainsi 9 caractères méristiques et 23 variables morphométriques ont été retenus. Les résultats ont montré une invariance des caractères méristiques entre les mâles et les femelles. Quant aux rapports morphométriques, les mâles diffèrent des...
Tipo: Journal Contribution
Palavras-chave: Animal morphology; Biological data; Cell differentiation; Comparative studies; Freshwater fish; Growth; Meristic counts; Morphometry; Phenotypes; Phenotypic variations; Population structure; Water reservoirs; Sex; Sex characters; Marine fisheries; Pike perch.
Ano: 2009
URL: http://hdl.handle.net/1834/4748

Análisis de la unidad poblacional de la merluza de cola (Macruronus magellanicus). Estudio de las variaciones morfológicas somáticas y de los otolitos en relación con su distribución geográfica
Provedor de dados: 20
Autores: Jerez, B.; Hernández, D.R.; Giussi, A.R.; Malaspina, A.M.
To determine the existence of different population units of longtail hake (Macruronus magellanicus) of the Argentine Sea, the meristic and morphometric characters of 861 specimens from two different areas were studied measuring 24 body distances with the landmark methods. Besides, the relation among weight, width and thickness of 806 pairs of sagittae otoliths as a function of length and sex of individuals was analyzed. Using the General Linear Model, the Principal Component Analysis and the Multivariate Analysis of Variance the fitted morphometric variables, the meristic characters and their relation to the Area and Sex factors were assessed. The variability observed does not show any conclusive evidence about the existence of more than one stock in the...
Tipo: Journal Contribution
Palavras-chave: Stock identification; Meristic counts; Morphometry; Otoliths.
Ano: 2013
URL: http://hdl.handle.net/1834/5490

Estudio de la variabilidad morfométrica y de la estructura genética de la pescailla de red Cynoscion guatucupa en el Atlántico suroccidental
Provedor de dados: 20
Autores: Sabadin, D.
El conocer la escala espacial y temporal de la variación fenotípica y genética en las especies marinas es fundamental para el entendimiento de los procesos ecológicos y evolutivos que influyen sobre la biodiversidad, proveyendo un marco explicativo para la conservación de las poblaciones de peces. La pescadilla de red (Cynoscion guatucupa, Actinopterygii, Sciaenidae), es un pez demersal, que tiene en Sudamérica una amplia distribución latitudinal, abarcando desde las costas de Río de Janeiro (Brasil) hasta las costas de la provincia de Chubut (Argentina). Habita zonas costeras y parte de la plataforma continental, en aguas marinas y estuarinas, y es la segunda, en importancia comercial de las especies costeras. La finalidad de este trabajo es efectuar un...
Tipo: Theses and Dissertations
Palavras-chave: Morphometry; Genetics; Meristic counts; Genetics; Http://aims.fao.org/aos/agrovoc/c_3222.
Ano: 2009
URL: http://hdl.handle.net/1834/3586

Sobre la denominación específica del surel del sector bonaerense (Pisces, Fam. Carangidae).
Provedor de dados: 20
Autores: Pacheco Tack, R.; Cousseau, M.B.
The aim of this paper is to discuss the validity of the taxonomic status formerly assigned to the rough scad inhabiting shelf waters off Buenos Aires Province, Argentina. Until recently the species had been considered, mainly by Argentine authors, as Trachurus picturatus australis, on the basis of a description by Nani (1950). Other authors, however, consider that the only valid species for the West Atlantic is Trachurus lathami. In general terms, there references are based on rather scarce material for this region. In this paper, we compare meristic and morphometric data from 160 specimens collected off Mar del Plata. Statistical analysis of the characteristics lead us to conclude that the valid scientific name of the Argentine rough scad is Trachurus...
Tipo: Journal Contribution
Palavras-chave: Morphometry; Meristic counts; Taxonomy; Taxonomy; Http://aims.fao.org/aos/agrovoc/c_7631.
Ano: 1994
URL: http://hdl.handle.net/1834/1934

Descripción de larvas y juveniles de Pleuronectiformes en el Mar Argentino
Provedor de dados: 20
Autores: Derisio, C.M.
En el Atlántico Suroccidental, el orden Pleuronectiformes se halla representado por más de 20 especies que se distribuyen principalmente entre los 34° y 47° S. El objetivo de este trabajo fue describir las características morfológicas de los estadios larvalcs de Etropus longimanus y Symphurus trewavasae, y de los juveniles de algunas especies de la familia Paralichthyidae (Paralichthys orbignyanus, P. isosceles, Xystreurys rasile y E. longimanus) y Cynoglossidae (S. jenynsi y S. trewavasae) presentes en el Mar Argentino, aportando herramientas diagnósticas que permitan diferenciar las especies de juveniles entre sí y los diferentes estadios larvales en una mIsma espeCIe.Los ejemplares estudiados provInieron de campañas de investigación desarrol1ádas por el...
Tipo: Theses and Dissertations
Palavras-chave: Meristic counts; Morphometry; Animal morphology; Animal morphology; Http://aims.fao.org/aos/agrovoc/c_421.
Ano: 2004
URL: http://hdl.handle.net/1834/3868

Estudio comparativo de caracteres merísticos y morfométricos de la anchoíta (Engraulis anchoita)
Provedor de dados: 20
Autores: Ratti, M.M.
The argentine anchovy (E.anchoita)shows a distributional area between 35° and 47°30' on the continental shelf off Argentina. This paper deals with some meristic and morphometric characters in order to test their power in separating different stocks. Those largely scattered distributions of morphologic features, which had been already pointed out other authors, make difficult to separate different stocks of this species on this basis.
Tipo: Journal Contribution
Palavras-chave: Meristic counts; Stock identification.
Ano: 1986
URL: http://hdl.handle.net/1834/2026

Identificación de larvas y juveniles de Patagonotothen ramsayi y Patagonotothen tessellata (Pisces, Nototheniidae)
Provedor de dados: 20
Autores: Poliglieddu, M.L.; Saccullo, H.
Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales
Tipo: Theses and Dissertations
Palavras-chave: Fish larvae; Juveniles; Meristic counts; Morphometry; Fish larvae; Juveniles; Http://aims.fao.org/aos/agrovoc/c_2924; Http://aims.fao.org/aos/agrovoc/c_25393.
Ano: 1997
URL: http://hdl.handle.net/1834/3127