scholarly journals Life history of the common pandora, Pagellus erythrinus (Linnaeus, 1758) (Actinopterygii: Sparidae) from southern Portugal

2010 ◽  
Vol 58 (3) ◽  
pp. 233-245 ◽  
Author(s):  
Rui Coelho ◽  
Luis Bentes ◽  
Carla Correia ◽  
Jorge M.S Gonçalves ◽  
Pedro G Lino ◽  
...  
Keyword(s):  
Growth Function ◽  
Adequate Model ◽  
The North ◽  
Pagellus Erythrinus ◽  
Marginal Increment ◽  
History Of ◽  
The Common ◽  
Common Pandora ◽  
One Year ◽  
First Maturity

The common pandora, Pagellus erythrinus, is a commercially important seabream for coastal fisheries in the north and central eastern Atlantic. Age, growth and reproductive aspects of the southern Portuguese population were estimated by analysing 386 specimens ranging in total length (TL) from 12.0 to 44.8 cm. Ages were estimated by counting growth bands on otoliths and verified by marginal increment analysis, with specimens ranging in age from 1 to 21 years. The von Bertalanffy growth function was selected as the most adequate model to fit this species' growth, with the estimated parameters being Linf = 47.14 cm TL, k = 0.084 year-1 and t0 = -4.42 year. The gonads were analyzed macroscopically over a one-year period and the reproductive spawning season found to occur from March to July. The length at first maturity for males occurs at 17.58 cm TL and 1.15 years while females mature at slightly smaller sizes (17.29 cm TL) and younger ages (1.04 years). The results presented in this study are important for comparing this population's parameters with those of other populations of the same species occurring in other areas, as well as for future studies, for assessing eventual changes in population parameters over time.

Age and growth of the Japanese butterfish Psenopsis anomala in the waters off north-eastern Taiwan

2020 ◽  
Vol 100 (3) ◽  
pp. 427-433 ◽  
Author(s):  
Shyh-Bin Wang ◽  
Li-Yu Hung ◽  
Kwang-Ming Liu
Keyword(s):  
Growth Parameters ◽  
Linear Method ◽  
Growth Function ◽  
Age And Growth ◽  
Trawl Fishery ◽  
Age Class ◽  
The North ◽  
North Eastern ◽  
Marginal Increment ◽  
One Year

AbstractThe catch of Japanese butterfish, Psenopsis anomala in Taiwan is greater than those of any other nation; however, the biology, particularly the age and growth, of this economically important fish species is little known. This study describes the age and growth of P. anomala based on 734 specimens (340 females, 363 males, 31 unsexed) caught by trawl fishery in the north-eastern waters off Taiwan from March 2007 to July 2008. The age of specimens was estimated by counting the growth annuli in sagittal otoliths. The periodicity of annulus deposition on otolith was estimated to be one year with opaque zone deposited between July and August based on marginal increment analysis. The maximum age for both sexes was estimated to be ~4. The female portion of the population was dominated by the 3+ age class, while the male portion was dominated by the 2∞ age class. The parameters of the von Bertalanffy growth function with standard error estimated based on the observed length at age using a non-linear method are as follows: L∞ = 25.47 ± 0.65 cm, k = 0.30 ± 0.03 year−1, and t0 = −1.84 ± 0.16 year for females (n = 350), and L∞ = 22.39 ± 0.45 cm, k = 0.46 ± 0.04 year−1, and t0 = −1.38 ± 0.13 year for males (n = 378). The growth performances of P. anomala reported from different geographic regions were compared, and the potential influences of sample size distribution on the estimated growth parameters were further discussed.

The Segregation of Black Students at Oberlin College after Reconstruction

2001 ◽  
Vol 41 (3) ◽  
pp. 344-364 ◽  
Author(s):  
Cally L. Waite
Keyword(s):  
Civil War ◽  
Black Students ◽  
Black Families ◽  
Important Place ◽  
Educational History ◽  
College Curriculum ◽  
The North ◽  
History Of ◽  
Oberlin College ◽  
One Year

The community of Oberlin, Ohio, located in the northeast corner of the state, holds an important place in the history of the education of Black Americans. In 1834, one year after its founding, the trustees of Oberlin College agreed to admit students, “irrespective of color.” They were the only college, at that time, to adopt such a policy. Oberlin's history as the first college to admit Black students and its subsequent abolitionist activities are crucial to the discussion of Black educational history. Opportunities for education before the Civil War were not common for most of the American population, but for Blacks, these opportunities were close to nonexistent. In the South, it was illegal for Blacks to learn to read or write. In the North, there was limited access to public schooling for Black families. In addition, during the early nineteenth century there were no Black colleges for students to attend. Although Bowdoin College boasted the first Black graduate in 1827, few other colleges before the Civil War opened their doors to Black students. Therefore, the opportunity that Oberlin offered to Black students was extraordinarily important. The decision to admit Black students to the college, and offer them the same access to the college curriculum as their white classmates, challenged the commonly perceived notion of Blacks as childlike, inferior, and incapable of learning.

Fistula between the common iliac artery and the left ureter

1992 ◽  
Vol 59 (1_suppl) ◽  
pp. 243-245
Author(s):  
F. Acanfora ◽  
P.G. Conti ◽  
D. Genesi ◽  
G. Morteo ◽  
F. Sereno ◽  
...  
Keyword(s):  
Iliac Artery ◽  
Urothelial Cancer ◽  
Common Iliac Artery ◽  
Conservative Surgery ◽  
Left Ureter ◽  
Percutaneous Dilatation ◽  
History Of ◽  
The Common ◽  
One Year

We report the history of a patient with ureteroileocutaneous-stomy who developed stenosis of both ureteroileal anastomoses after one year from cystectomy for urothelial cancer. The strictures were managed by percutaneous dilatation with an angioplasty baioon catheter. The double J catheters were left in place across the stenosis for three months, then the left stent was removed. Afterwards the patient presented a fistula between the common iliac artery and the left ureter, and he underwent conservative surgery. We discuss the possible etiopathogenesis and the management of this rare pathology.

scholarly journals Growth and reproduction of the deep-water rose shrimp, Parapenaeus longirostris (Lucas, 1846) (Decapoda, Penaeidae), in the Southern Tyrrhenian Sea

Crustaceana ◽  
2014 ◽  
Vol 87 (10) ◽  
pp. 1168-1184 ◽  
Author(s):  
Marco Arculeo ◽  
Marco Arculeo ◽  
Sabrina Lo Brutto ◽  
Marco Arculeo ◽  
Sabrina Lo Brutto ◽  
...  
Keyword(s):  
Deep Water ◽  
Growth Function ◽  
Western Coast ◽  
Tyrrhenian Sea ◽  
The North ◽  
Von Bertalanffy Growth Function ◽  
Parapenaeus Longirostris ◽  
Southern Tyrrhenian Sea ◽  
First Maturity ◽  
Two Peaks

From June 2006 to May 2007, monthly samples ofParapenaeus longirostris(Lucas, 1846) were collected on land from the landings of two different, although contiguous, fishing grounds exploited by the bottom trawl fisheries of the two fishing harbours of Terrasini and Porticello, located on the north-western coast of Sicily. Carapace length (CL) of the female and male deep-water rose shrimp in Terrasini ranged from 9 to 32 mm and 13 to 26 mm, respectively, whereas in Porticello the length ranged from 8 to 31 mm and 13 to 26 mm, respectively. The Von Bertalanffy Growth Function parameters for Terrasini females and males were CL∞ = 38.5 mm, year−1and CL∞ = 32.5 mm, year−1, respectively. For Porticello females and males, the parameters were CL∞ = 40 mm, year−1and CL∞ = 30 mm, year−1, respectively. Analysis of maturity stages indicates that the deep-water rose shrimp is an asynchronous batch of almost continuous spawners, although one to two peaks of activity can be detected. In both fishing areas, the reproductive phase peaked twice, once in January and again from August to September. The sizes at first maturity (CL50%) were 27.8 and 26.6 mm CL for Terrasini and Porticello, respectively.

Age and growth of the whale shark (Rhincodon typus) in the north-western Pacific

2014 ◽  
Vol 65 (12) ◽  
pp. 1145 ◽  
Author(s):  
Hua Hsun Hsu ◽  
Shoou Jeng Joung ◽  
Robert E. Hueter ◽  
Kwang Ming Liu
Keyword(s):  
Growth Parameters ◽  
Growth Function ◽  
Age And Growth ◽  
Whale Shark ◽  
Growth Band ◽  
Rhincodon Typus ◽  
The North ◽  
Von Bertalanffy Growth Function ◽  
Marginal Increment ◽  
Using Data

This study estimated age and growth of the largest extant fish, the whale shark (Rhincodon typus) by counting vertebral band pairs from 92 specimens comprising 43 males (2.68–9.88 m total length [TL]), 30 females (1.60–7.02 m TL), and 19 unsexed individuals (2.83–6.67 m TL) taken by Taiwanese commercial fisheries during 2001–06. Growth band pairs up to 25 and 42 were counted for a 6.38-m TL female and a 9.88-m TL male, respectively. Using marginal increment ratio and centrum edge analysis, band pairs were postulated to be formed twice a year. The two-parameter von Bertalanffy growth function provided the best fit without significant differences between sexes. Growth parameters were calculated for both sexes as L∞ = 16.80 m TL, k = 0.037 year–1; annual band pair formation would modify these parameters to L∞ = 15.34 m TL, k = 0.021 year–1. Using data reported in another study for 50% size at maturity for males (8.1 m TL), and the largest immature and smallest mature females (8.7 and 9.6 m TL, respectively) in the Indo-Pacific, these TLs converted to ages at maturity of 17 years for males and 19–22 years for females. The longevity was calculated to be 80.4 years.

Biological aspects of juvenile great hammerhead sharks Sphyrna mokarran from the Arabian Gulf

2021 ◽  
Vol 72 (1) ◽  
pp. 110
Author(s):  
Hua Hsun Hsu ◽  
Zahid Muhammed Nazeer ◽  
Yu Jia Lin ◽  
Premlal Panickan ◽  
Khaled Al-Abdulkader ◽  
...  
Keyword(s):  
Life History ◽  
Arabian Gulf ◽  
Age Groups ◽  
Western Indian Ocean ◽  
Growth Function ◽  
The North ◽  
Von Bertalanffy Growth Function ◽  
Growth History ◽  
History Of ◽  
Hammerhead Sharks

The life history of the critically endangered great hammerhead Sphyrna mokarran was examined using samples collected from commercial fisheries operating in Saudi Arabian waters of the Arabian Gulf. In all, 105 specimens (47 males, 58 females), with a total length (TL) ranging from 67.0 to 236.0cm, were examined between April 2016 and November 2019. All individuals were immature. A neonate measuring 67.0cm TL caught in early June suggested the parturition period of this species was during May and June. Vertebrae under the first dorsal fin from 69 individuals (30 males, 39 females) were processed. Three age groups, from 0+ to 2+ years old, were identified by vertebrae analysis. Based on the relationship between vertebral central diameter and TL, the Fraser–Lee approach was used to back-calculate the growth history of TL. A two-parameter von Bertalanffy growth function provided the best fit to describe early growth of great hammerheads during 0–2.9 years of age based on observed and back-calculated length-at-age data. The asymptotic lengths and k values were estimated to be 256.8cm TL and 0.449 year–1 respectively. This study provides the first life history information of great hammerhead sharks in the north-western Indian Ocean.

scholarly journals The complete mitochondrial genome of the common pandora Pagellus erythrinus (Perciformes: Sparidae)

2018 ◽  
Vol 3 (2) ◽  
pp. 624-625 ◽  
Author(s):  
Marina Ceruso ◽  
Celestina Mascolo ◽  
Elijah K. Lowe ◽  
Giuseppe Palma ◽  
Aniello Anastasio ◽  
...  
Keyword(s):  
Mitochondrial Genome ◽  
Complete Mitochondrial Genome ◽  
Pagellus Erythrinus ◽  
The Common ◽  
Common Pandora
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