Biometrijske osobine šnjura pučinara, Trachurus mediterraneus, (Osteichthyes: Carangidae) u srednjem Jadranu

The relationship between morphometric measurements (15) and meristic characters (8) were examined in 237 specimens of Mediterranean horse mackerel (105 females, 101 males and 31 immature specimens) caught in the central Adriatic Sea. The goal of this paper was to investigate: whether there are morphological differences between males and females; the existence of homogenous or heterogeneous morphology stock; changes in morphometric characters with an increase in body length. Morphological differences between males and females were not marked. Modal values specific for Trachurus species morphologic characters, such as number of lateral line scales, maximum height of scales in anterior and posterior part of lateral line, point at which dorsal accessory lateral line is terminated and values of other biometric properties indicated a possible homogeneous morphology stock of T. mediterraneus in the central Adriatic Sea. Changes in some morphometric characters obtained in conjunction with an increase in body length showed that smaller specimens have longer head, anal and ventral fin than adult specimens. On the other hand, with an increase in total length, the fish have larger preorbital and postorbital distance, smaller eye and maximum height of scales in the lateral line than smaller fishes. The negative correlation recorded for the maximum and minimum body depth indicates that the body becomes progressively elongated. The meristic characters of Mediterranean horse mackerel from different Mediterranean and NE Atlantic areas are mostly in agreement with the data in our study.Na 237 primjeraka šnjura pučinara (105 ženki, 101 mužjak i 31 spolno nezrelih jedinki) ulovljenih u srednjem Jadranu analizirana su morfometrijska (15) i meristička obilježja (8). Cilj ove studije bio je istražiti morfološke razlike između mužjaka i ženki, postojanje morfološki homogenog ili heterogenog stoka i promjene morfometrijskih osobina tijekom rasta ribe. Morfološke razlike između mužjaka i ženki nisu izražene. Modalne vrijednosti specifičnih morfoloških obilježja, kao što su broj ljusaka u bočnoj pruzi, najveća visina ljusaka u prednjem i stražnjem dijelu bočne pruge i točka gdje završava dodatna leđna bočna pruga te vrijednosti ostalih biometrijskih osobina ukazuju da u Jadranu vjerojatno obitava morfološki homogena populacija ove vrste. Uočene su promjene morfometrijskih odnosa u vezi s porastom tjelesne dužine. Manji primjerci imaju veću dužinu glave, podrepnu i trbušne peraje nego veći primjerci. S druge strane veće ribe imaju veću predočnu i zaočnu udaljenost, manju veličinu oka i manju visinu ljusaka u bočnoj pruzi u odnosu na manje ribe. Negativna korelacija zabilježena kod najmanje i najveće visine tijela pokazuje da se tijelo ribe progresivno izdužuje. Merističke osobine šnjura pučinara s različitih područja Mediterana i sjeveroistočnog Atlantika uglavnom se podudaraju s podacima dobivenim u ovom radu

Morphometric and meristic characteristics of poor cod, Trisopterus minutus (L. 1758), from the eastern central Adriatic Sea

Background and Purpose: Poor cod, Trisopterus minutus (Linnaeus, 1758) is a gadoid fish, which inhabits the Mediterranean and eastern Atlantic. The aim of present work was to investigate the morphological properties of poor cod in the eastern central Adriatic Sea by analyzing classical morphometric and meristic characteristics, and thereby investigating: a) whether there are morphological differences between males and females; b) the existence of possible homogenous or heterogeneous stock morphology; and c) the changes in morphometric characteristics with increase in body length.Material and methods: Samples of 410 poor cod specimens (209 females, 201 males) were collected by bottom-trawl between 2014 and 2016 from five localities in the eastern central Adriatic Sea. In order to analyze biometry of the species; fifteen morphometric and eight meristic characteristics were measured.Results and Conclusions: Total length of all specimens ranged from 8.8 to 27.1 cm. Morphological differences between males and females was not marked. Biometric analysis of the morphometric and meristic characteristics indicated a homogenous morphology stock of Trisopterus minutus in the Adriatic Sea. Changes in some morphometric characteristics obtained in conjunction with an increase in body length showed that smaller specimens have a longer head, eye diameter, ventral fins and second anal fins than adult specimens. The negative correlation recorded for the maximum and minimum body depth indicated that the body elongated with poor cod growth. Comparison of the meristic characteristics that were published earlier show some differences between the poor cod populations inhabiting the Adriatic, Black Sea and eastern Atlantic.</p

Najnoviji podatci o maksimalnoj zabilježenoj starosti i dužini pirke Serranus scriba (Linnaeus, 1758) u Mediteranu

The present study was undertaken not only to register the new recently noticed maximum age and total length of Serranus scriba (Linnaeus, 1758), contributing to the knowledge of this species in the Mediterranean and Adriatic Sea inclusively. A painted comber specimen of 323 mm of total length and age 16 years was caught during August 2008 in the Lavdra Channel (middle-eastern Adriatic Sea).Jedinka pirke Serranus scriba (Linnaeus, 1758) je ulovljena uz sjeverozapadnu obalu otoka Mala Lavadra (istočni dio srednjeg Jadrana). Totalna dužina tijela kao i starost ulovljene pirke je najveća zabilježena do sada na području njenog rasprostranjenja i iznosila je 323 mm odnosno 16 godina

Um modelo dinâmico multivariado para volatilidades e correlações com aplicação em seleção de portfólio de ativos financeiros

Este trabalho tem como objetivo modelar a distribuição conjunta condicional de um portfólio com alta dimensão transversal composto por 71 séries de retornos diários de ações listadas na bolsa brasileira (B3), no período de 2014-2019. A finalidade é estimar a matriz de covariância dos retornos que proporcione uma alocação ótima dos ativos, com melhor desempenho do que a estratégia de mínima variância tradicional que faz uso da matriz de covariância amostral. A modelagem é feita usando o modelo proposto por Opschoor et al. (2020) de cópulas fatoriais com cargas dinâmicas que evoluem com um mecanismo baseado no score da distribuição conjunta condicional, esse modelo apresenta forma fechada para verossimilhança. Os resultados mostram que o turnover do portfólio usando a matriz de covariância estimada pelo modelo foi maior do que usando a matriz de covariância amostral.This work aims to model the conditional joint distribution of a portfolio with a high cross-sectional dimension composed of 71 series of daily returns of the Brazilian stock exchange (B3), over the period 2014–2019. The purpose is to estimate the covariance matrix of returns that provides an optimal allocation of assets with better performance than the traditional minimum variance strategy that uses the sample covariance matrix. We used the model proposed by Opschoor et al. (2020) of factor copula with score-driven dynamic factor loadings, the likelihood of this model presents closed form. The results show that the portfolio turnover using the covariance matrix estimated by the model was greater than using the sample covariance matrix

Species composition, seasonal fluctuations, and residency of inshore fish assemblages in the Pantan estuary of the eastern middle Adriatic

A total of 9434 fishes, mainly juveniles, belonging to 15 families and 42 species were caught at six stations in the Pantan estuary in the eastern mid Adriatic. Using a 50 m beach seine, 1493 specimens of 25 species were caught in summer, 2594 specimens of 26 species in autumn, 3626 of 24 species in winter, and 1721 of 30 species in spring. Seven species comprised 87.8% of the total: Atherina boyeri (33.2%), Pomatoschistus marmoratus (28.1%), Liza aurata (8.3%), Liza ramada (7.1%), Aphanius fasciatus (5.5%), Diplodus annularis (2.9%) and Mugil cephalus (2.6%). An ANOSIM2 test for unreplicated 2-way layouts revealed significant differences in species assemblages among the sites (ρav = 0.385, P = 0.007). Stations with similar hydrographic conditions had similar species richness and assemblages. Statistically significant differences were not noted between seasons (ρav = 0.221, P = 0.057) although some seasonal differences, especially between summer and winter, were observed on nMDS plots. The most important ecological category was planktivorous fishes (39.4%), followed by benthic mesocarnivorous fishes (33.9%), and particulate organic matter feeders (21.3%). Twenty-two species were permanent estuary residents, 14 opportunists, and six transients. This study demonstrates that the Pantan estuary is an important fish nursery habitat that, although small, has great spatial fish diversity and therefore deserves special protection

Proposta de uma nova ficha anestésica para implantação no hospital universitário Polydoro Ernani de São Thiago: HU/UFSC

Trabalho de Conclusão de Curso - Universidade Federal de Santa Catarina. Curso de Medicina. Dapartamento de Clínica Cirúrgica

Parque urbano em Pelotas: possibilidade de requalificação urbana

TCC (graduação) - Universidade Federal de Santa Catarina. Centro Tecnológico. ArquiteturaTCC sem resumo

Parque da Orla do Canal Santa Bárbara: elemento de integração dos Sistemas urbanos

TCC (graduação) - Universidade Federal de Santa Catarina. Centro Tecnológico. ArquiteturaTCC sem resumo