Geographical distribution, growth and breeding miagration of the eastern Australian king prawn Penaeus plebejus Hess

1975 ◽  
Vol 26 (3) ◽  
pp. 343 ◽  
Author(s):  
NV Ruello
Keyword(s):  
Carapace Length ◽  
East Coast ◽  
Current System ◽  
Adult Population ◽  
East Australian Current ◽  
Estuarine Habitat ◽  
Lord Howe Island ◽  
Length Increment ◽  
The Relationship ◽  
Large Adult

P. plebejus is commonly caught along the east coast of Australia between Bundaberg (25�S.) and Lakes Entrance (38�S.) and a few specimens have been recorded from Lord Howe Island and Tasmania. The results of tagging studies conducted to determine the relationship between juvenile (estuarine) stocks and adults at sea suggest that maturing prawns migrate along the coast to breed in warmer oceanic waters north of their estuarine habitat. The stocks from different estuaries mix at sea and appear to form a single large adult population in south-east Australia. It is postulated that the larvae are carried south from the spawning area by the East Australian Current system, occasionally as far south as Tasmania or east to Lord Howe Island (but not to New Zealand). The longest migration was 930 km (in 260 days) which is a record for an adult crustacean. The highest growth rate observed was a carapace length increment of 19½ mm (from 20½ to 40 mm) in 4 months.

Nuragic Settlement Dynamics

2020 ◽  
Author(s):  
Cezary Namirski
Keyword(s):  
Bronze Age ◽  
Iron Age ◽  
East Coast ◽  
Early Iron Age ◽  
Central Mediterranean ◽  
Settlement Dynamics ◽  
The Relationship ◽  
The Bronze Age

The book is a study of the Bronze Age and Early Iron Age Nuragic settlement dynamics in two selected areas of the east coast Sardinia, placing them in a wider context of Central Mediterranean prehistory. Among the main issues addressed are the relationship between settlement and ritual sites, the use of coastline, and a chronology of settlement.

scholarly journals Is Hip Muscle Strength Associated with Dynamic Knee Valgus in a Healthy Adult Population? A Systematic Review

2021 ◽  
Vol 18 (14) ◽  
pp. 7669
Author(s):  
Ali Mohammed Alzahrani ◽  
Msaad Alzhrani ◽  
Saeed Nasser Alshahrani ◽  
Wael Alghamdi ◽  
Mazen Alqahtani ◽  
...  
Keyword(s):  
Muscle Strength ◽  
Adult Population ◽  
Knee Valgus ◽  
Journal Articles ◽  
Hip Muscle ◽  
Hip Abductor ◽  
Hip Muscles ◽  
Analysis System ◽  
The Relationship ◽  
External Rotator

This study aimed to systematically review research investigating the association between hip muscle strength and dynamic knee valgus (DKV). Four databases (MEDLINE, PubMed, CINAHL, and SPORTDiscus) were searched for journal articles published from inception to October 2020. Seven studies investigating the association between hip muscle strength and DKV using a two-dimensional motion analysis system in healthy adults were included. The relationship between hip abductor muscle strength and DKV was negatively correlated in two studies, positively correlated in two studies, and not correlated in three studies. The DKV was associated with reduced hip extensor muscle strength in two studies and reduced hip external rotator muscle strength in two studies, while no correlation was found in three and five studies for each muscle group, respectively. The relationship between hip muscle strength, including abductors, extensors, and external rotators and DKV is conflicting. Considering the current literature limitations and variable methodological approaches used among studies, the clinical relevance of such findings should be interpreted cautiously. Therefore, future studies are recommended to measure the eccentric strength of hip muscles, resembling muscular movement during landing. Furthermore, high-demand and sufficiently challenging functional tasks revealing lower limb kinematic differences, such as cutting and jumping tasks, are recommended for measuring the DKV.

Variation in size distribution of juvenile pink shrimps Farfantepenaeus brasiliensis and F. paulensis in the estuarine-adjacent ocean area of Cananéia, south-eastern coast of Brazil

2021 ◽  
Vol 101 (1) ◽  
pp. 117-129
Author(s):  
Dalilla da Silva Salvati ◽  
Júlia Fernandes Perroca ◽  
Sabrina Morilhas Simões ◽  
Antonio Leão Castilho ◽  
Rogerio Caetano da Costa
Keyword(s):  
Development Time ◽  
Carapace Length ◽  
Growth Parameters ◽  
Adult Population ◽  
Eastern Coast ◽  
Natural Mortality ◽  
Juvenile Phase ◽  
Juvenile Recruitment ◽  
Estuarine Lagoon ◽  
Closed Season

AbstractThe study characterized the structure of juveniles and sub-adults of Farfantepenaeus brasiliensis and F. paulensis in the Cananéia-Iguape estuarine lagoon system and its adjacent coastal area by evaluating the period of juvenile recruitment, sex ratio, growth, longevity, natural mortality, and development time until the late juvenile phase. Samples were collected from July 2012 to June 2014. Shrimps were identified by species and sex, and measured (carapace length – CL mm); 889 individuals of F. brasiliensis and 848 of F. paulensis were analysed. Females were more abundant than males for both species. The growth parameters of F. brasiliensis were: CL∞ = 45.5 mm, k = 1.8 year−1 for males and CL∞ = 55.2 mm, k = 1.6 year−1 for females; longevity of 2.52 years (males) and 2.88 years (females); and natural mortality of 1.71 (males) and 1.55 (females). For F. paulensis, the following values were observed: CL∞ = 40.7 mm, k = 2.3 year−1 for males and CL∞ = 56.5 mm, k = 1.9 year−1 for females; longevity of 2.04 years (males) and 2.37 years (females); and natural mortality of 2.39 (males) and 2.05 (females). The juvenile recruitment of both species peaked in January 2014. The development time until late juvenile phase was ~7 months (F. brasiliensis) and ~5 months (F. paulensis). Even though the highest abundance of juveniles did not occur in the closed season, fishing is forbidden in the estuarine area and the migration towards the adult population occurred close to or even during the closed season.

scholarly journals The effect of language on performance: do gendered languages fail women in maths?

2021 ◽  
Vol 6 (1) ◽  
Author(s):  
Tamar Kricheli-Katz ◽  
Tali Regev
Keyword(s):  
Language Proficiency ◽  
Gender Inequality ◽  
Gender Gap ◽  
Adult Population ◽  
Ongoing Debate ◽  
The Feminine ◽  
Hebrew Language ◽  
The Relationship ◽  
Large Representative ◽  
And Task

AbstractResearch suggests that gendered languages are associated with gender inequality. However, as languages are embedded in cultures, evidence for causal effects are harder to provide. We contribute to this ongoing debate by exploring the relationship between gendered languages and the gender gap in mathematics achievements. We provide evidence for causality by exploiting the prominent (but not exclusive) practice in gendered languages of using masculine generics to address women. In an experiment on a large representative sample of the Hebrew-speaking adult population in Israel, we show that addressing women in the feminine, compared to addressing them in the masculine, reduces the gender gap in mathematics achievements by a third. These effects are stronger among participants who acquired the Hebrew language early in childhood rather than later in life, suggesting that it is the extent of language proficiency that generates one’s sensitivity to being addressed in the masculine or in the feminine. Moreover, when women are addressed in the masculine, their efforts (in terms of time spent on the maths test) decrease and they report feeling that “science is for men” more than when addressed in the feminine. We supplement the analysis with two experiments that explore the roles of general and task-specific stereotypes in generating these effects.

An Empirical Examination of the Anomie Theory of Drug Use

1983 ◽  
Vol 13 (1) ◽  
pp. 49-62 ◽  
Author(s):  
R. Thomas Dull
Keyword(s):  
Drug Use ◽  
Sex Education ◽  
Adult Population ◽  
Adequate Explanation ◽  
Empirical Examination ◽  
Anomie Theory ◽  
Dependent Variables ◽  
Independent Variable ◽  
Level Of Significance ◽  
The Relationship

The purpose of the present study was to investigate the relationship between anomie theory, as measured by Srole's Anomie Scale, and the respondents self-admitted drug use (alcohol, marijuana, tobacco, amphetamines, and barbiturates). An analysis of self-reported drug use data was conducted of a general Texas adult population. This analysis included a series of bivariate cross comparison correlations between the independent variable (anomie) and the dependent drug variables. The relationship between the independent and dependent variables were further examined by calculating the correlation and level of significance within selected categories of several demographic (age, race, sex, education, income, and marital status) control variables. The results indicated that anomie was significantly correlated with several of the drug variables. However, these associations were extremely weak and of little explanatory value. It was concluded that, within the framework of this analysis, anomie theory fails to provide an adequate explanation for the use of drugs.

scholarly journals Shear Strength Characterization of Bauxite Deposits in Kuantan, East Coast Malaysia

2019 ◽  
Vol 8 (3S3) ◽  
pp. 404-407
Keyword(s):  
Shear Strength ◽  
Moisture Content ◽  
East Coast ◽  
Field Performance ◽  
Friction Angle ◽  
Parent Rock ◽  
Index Tests ◽  
Strength Characterization ◽  
The Relationship

Engineering characterization which are useful for "temperate" zone soils usually fail to predict the field performance of bauxitic soils, because the index tests upon which the characterization are based are not always reproducible for bauxitic soils. Fifteen (15) bauxitic soil of undisturbed and disturbed samples from 3 distinct sites in Kuantan, all derived from basalt parent rock but representing various stages of weathering were subjected to engineering and mineralogic tests. Values for cohesion and friction angles are evaluated. Soils from Semambu has the highest moisture content of 33.27%, the cohesion value is however lower compared to Bukit Goh which has moisture content of 21.74%. Study are further done to discover the relationship with cohesion and friction angles. Thus, by measuring the cohesion and friction angle can evaluate the performance of bauxite shear strength.

scholarly journals POPULASI DAN SERANGAN LIRIOMYZA SATIVAE (BLANCHARD) (DIPTERA: AGROMYZIDAE), SERTA POTENSI PARASITOIDNYA PADA PERTANAMAN KETIMUN

2005 ◽  
Vol 5 (2) ◽  
pp. 73-81
Author(s):  
Siti Herlinda ◽  
Leny Puspa Rosalina ◽  
Yulia Pujiastuti ◽  
Erizal Sodikin ◽  
Aunu Rauf
Keyword(s):  
Regression Coefficient ◽  
Adult Population ◽  
Larval Abundance ◽  
Liriomyza Sativae ◽  
Leaf Mining ◽  
The Relationship

Population and damage by Liriomyza sativa (Blanchard) (Diptera : Agromyzidae) and its parasitoid potential on cucumber fields. The objectives of this research were to figure out adult population of L. sativae and the damage caused by the larvae on cucumber leaves, to analyze the relationship between adult population and the number of leaf mining tunnel caused by L. sativae larvae, and to analyze the relationship betweeen the larval abundance and its parasitoids. The highest adult population (7.60 adults per trap) of L. sativae was found on 5 weeks after planting (WAP) and the lowest (3.20 adults per trap) was on 2 WAP. The highest damage intensity was found on 3 weeks after planting, amounted to 36.89% while the lowest was found on 6 weeks after planting, amounted to 12.12%. The regression coefficient showed that each adult of L. sativae caused one leaf mining tunnel. The  higher  the  number of L. sativae  larvae, the  more  the  mining tunnels occured (R = 80.8%). The higher the number of L. sativae larvae in cucumber leaves, the more the larvae parasitized (R = 86.8%). Parasitoids found were Diglyphus sp. (Hymenoptera : Eulophidae) and Neochrysocharis sp. (Hymenoptera : Eulophidae). The highest apparent parasitism was found on 5 weeks after planting, amounted to 41.9%.

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