Population structure and morphometric variation in the sand-bubbler crab Scopimera crabricauda (Brachyura: Dotillidae)

2017 ◽  
Vol 67 (3-4) ◽  
pp. 319-330 ◽  
Author(s):  
Sana Sharifian ◽  
Vahid Malekzadeh ◽  
Ehsan Kamrani ◽  
Mohsen Safaie
Keyword(s):  
Carapace Length ◽  
Carapace Width ◽  
Total Weight ◽  
Morphometric Variation ◽  
Morphometric Characters ◽  
Mean Size ◽  
Study Population ◽  
One Year ◽  
The Persian Gulf ◽  
The Relationship

In the present study, population ecology and relationships between various morphometric characters of the sand-bubbler crab Scopimera crabricauda from the Persian Gulf (Iran) were studied. Crabs were collected monthly by excavating nine quadrats in high-density areas of open burrows at low, mid and high intertidal levels during spring low tides for one year. A total of 534 crabs was collected, of which 70% were males (and 30% females). Mean carapace width and total weight in both sexes showed significant differences. Crabs with a carapace width ranging from 5 to 7 mm were the dominant crabs in the population. The highest numbers of crabs were found in the higher intertidal area. The mean size of crabs decreased towards the sea. The aggregation of small crabs was found towards sea in female crabs. Juveniles were abundantly found from January to March whereas the sub-adults and adults were mostly found from April to January. The carapace length to carapace width relationship differed between males and females, as did the carapace width and carapace length to total weight relationships. Finally, the relationship between carapace width and weight for both sexes showed that the growth of this species is allometric.

scholarly journals Taxonomy, length-weight relationship, food and feeding habits of flower moon crab Matuta planipes Fabricius, 1798 from coastal waters of Gopalpur, Odisha, India

2017 ◽  
Vol 64 (3) ◽  
Author(s):  
Durga Prasad Behera ◽  
S. Y. Tenjing ◽  
Rocktim Ramen Das ◽  
Laxman Nayak ◽  
D. Mohapatra
Keyword(s):  
Coastal Waters ◽  
Carapace Length ◽  
Feeding Habits ◽  
Carapace Width ◽  
Total Weight ◽  
Linear Pattern ◽  
Food And Feeding ◽  
Males And Females ◽  
Relationship Of ◽  
The Relationship

The relationship between carapace length (CL), carapace width (CW) and total weight (TW) in the flower moon crab Matuta planipes Fabricius, 1798 was studied and found to be CL = 0.144+1.319 CW and CL = 0.356+1.273 CL for males and females respectively. In case of the carapace width and total weight, the relationships were: TW = 0.272 CW3.011 and TW = 0.474 CW2.555 for males and females respectively. The relationships of carapace length and total weight were: TW = 0.128 CL2.917 for males and TW = 0.184 CL2.650 for females. A linear pattern was found between the relationship of CL and CW for M. planipes, whereas a curvilinear pattern was found between the relationship of CL/CW and TW in the present study. It was also observed that M. planipes is an opportunistic omnivore, seaweed being the most dominant food item followed by crustaceans, seagrass, amphipods and miscellaneous matter.

scholarly journals Otolith measurements to estimate standard length of gobiid fish (Teleostei: Gobiiformes) from the Persian Gulf and Oman Sea

2020 ◽  
Vol 67 (4) ◽  
Author(s):  
Mahdi Iranmanesh ◽  
Majid Askari Hesni ◽  
Mohammadreza Lashkari
Keyword(s):  
Standard Length ◽  
Persian Gulf ◽  
Regression Equations ◽  
Gobiid Fish ◽  
Morphometric Characters ◽  
Oman Sea ◽  
Significant Difference ◽  
The Persian Gulf ◽  
Periophthalmus Waltoni ◽  
The Relationship

The relationship between morphometric characters (length, weight and height) of otolith and fish standard length was determined for six intertidal gobiid species from the northern Persian Gulf and Oman Sea. A total of 144 sagittal otoliths were extracted and anlysed from Periophthalmus waltoni, Boleophthalmus dussumieri, Scartelaos tenuis, Istigobius ornatus, Bathygobius meggitti and Trypauchen vagina. Regression equations were derived and found that there is no significant difference in regression coefficients between left and right otoliths of the species studied. Results of the study showed that otolith length (OL) and height (OH) could estimate standard length in all the species studied except in T. vagina, where the otolith weight gave the best estimate of standard length. Results clearly indicated that otolith dimensions of the gobiid fishes studied could provide information about the species and size.

Some aspects of population biology of the mud crab, Rhithropanopeus harrisii (Gould, 1841) in the Odra estuary, Poland

2009 ◽  
Vol 38 (4) ◽  
Author(s):  
Przemysław Czerniejewski
Keyword(s):  
Population Biology ◽  
Carapace Length ◽  
Carapace Width ◽  
Mud Crab ◽  
Rhithropanopeus Harrisii ◽  
Morphometric Characters ◽  
Individual Weight ◽  
Fish Traps ◽  
Odra Estuary

Some aspects of population biology of the mud crab,The mud crab is the only non-indigenous xanthid encountered in the River Odra estuary. In 2007-2008, the crabs were collected, using fish traps, to determine sex and to follow variations in individual weight and carapace length and width over a year. Sex-dependent differences in the crab morphometry were studied as well. The largest catch was that obtained in September (23.48% of the total number of 264 individuals) and October (31.82%). Male crabs accounted for 56.44% of the total number; males dominated in autumn (September-December) and spring (March, May, June) catches. Males showed significantly wider carapaces (16.81 ±3.98 mm; range: 5.60-22.90 mm) and mean individual weight (2.15 ±0.94 g; range: 0.15-3.93 g) than females (mean carapace width of 15.05 ±3.33 mm; range: 5.30-19.80 mm, and mean individual weight of 1.47 ±0.60 g; range: 0.13-2.56 g). Of the 11 morphometric characters analyzed, expressed in relative values (%), related to the carapace width, males showed significantly larger claw dimensions (CHL

scholarly journals Size at morphological maturity of Ucides cordatus (Linnaeus, 1763) (Brachyura, Ocypodidae) in the Laranjeiras Bay, Southern Brazil

2005 ◽  
Vol 48 (1) ◽  
pp. 139-145 ◽  
Author(s):  
Glaucia Dalabona ◽  
Jayme de Loyola e Silva ◽  
Marcelo Antonio Amaro Pinheiro
Keyword(s):  
Sexual Dimorphism ◽  
Sexual Maturity ◽  
Carapace Length ◽  
Carapace Width ◽  
Southern Brazil ◽  
Monthly Basis ◽  
Ucides Cordatus ◽  
Size At Sexual Maturity ◽  
Males And Females ◽  
One Year

Morphometry and maturity of Ucides cordatus were analyzed with males and females collected during one year on a monthly basis at Laranjeiras Bay, Paraná State, Brazil. Carapace length, chelipeds propodus length and abdominal width were measured and related to carapace width to verify sexual dimorphism and size at morphological maturity of each sex. Carapace and propodus length of larger and smaller cheliped presented difference between sexes, confirming the use of both as secondary sexual characters. MATURE II program indicated 44mm and 43mm of carapace width to represent the size at sexual maturity of males and females, respectively.

scholarly journals POPULATION BIOLOGY OF SEABOB-SHRIMP Xiphopenaeus kroyeri (Heller, 1862) CAPTURED ON THE SOUTH COAST OF PERNAMBUCO STATE, NORTHEASTERN BRAZIL

2014 ◽  
Vol 62 (4) ◽  
pp. 331-340 ◽  
Author(s):  
Danilo Francisco Corrêa Lopes ◽  
Emanuell Felipe Beserra da Silva ◽  
Silvio Ricardo Maurano Peixoto ◽  
Flavia Lucena Frédou
Keyword(s):  
Population Dynamics ◽  
Population Biology ◽  
Carapace Length ◽  
Total Weight ◽  
South Coast ◽  
Northeastern Brazil ◽  
Southern Coast ◽  
Xiphopenaeus Kroyeri ◽  
Males And Females ◽  
The Relationship

This paper aims to describe the population dynamics and to evaluate the stock of the seabob-shrimp Xiphopenaeus kroyeri on the coast of Pernambuco. Sampling was carried out between August/2011 and July/2012 in Sirinhaém, southern coast of Pernambuco. A total of 1201 individuals were analyzed, 673 females and 528 males. Total length (Lt) of females varied from 4.5 to 13.5 cm while the Lt of males ranged between 4.0 and 11.0 cm. The relationship between the Lt and carapace length and Lt and total weight showed negative allometry (males, females and pooled sexes). The slope of the curve "b" was statistically different between males and females for both relationships. Females mature with 8.90 cm. Asymptotic length L∞ was lower for males than for females (12.26 to 14.79 and 10.72 to 11.5 cm, respectively), K was similar between sexes (1.00-2.04 and 1.00-2.63 cm/year-1 respectively) as well as the longevity and size at 1st capture (1.50 to 1.97) years and 7.9 to 8.9 cm for males and females, respectively). The results indicate that X. kroyeri in the region is not overexploited for males, however considering females and pooled sexes the stock is near to being fully exploited.

Incidence and biology of Arcotheres tivelae (Crustacea: Decapoda) in Amiantis umbonella (Bivalvia: Veneridae) on the northern coast of the Persian Gulf, Iran

2010 ◽  
Vol 90 (4) ◽  
pp. 655-661 ◽  
Author(s):  
Hanieh Saeedi ◽  
Aria A. Ardalan
Keyword(s):  
Persian Gulf ◽  
Carapace Width ◽  
Host Record ◽  
Northern Coast ◽  
Significant Difference ◽  
The Mean ◽  
Amiantis Umbonella ◽  
Bandar Abbas ◽  
One Year ◽  
The Persian Gulf

The occurrence of pinnotherid crab Arcotheres tivelae in the bivalve mollusc Amiantis umbonella was investigated for one year on the Bandar Abbas coast (Persian Gulf, Iran). Specimens of A. umbonella were collected monthly from two transects from April 2007 to March 2008 and were investigated for presence of the Arcotheres tivelae. Infestation frequency of A. tivelae was 9.18% in a sample of 893 clams. From a total of 89 specimens of crabs, only eight were male. They were observed in late February and early March, all of them but one in association with female crabs. There was no significant difference between the sexes of the infested clams that pea crabs choose as a host. The mean carapace width of the crab A. tivelae was 7.7 ± 1.7 mm and the mean length of the Amiantis umbonella was 39.84 ± 8.93 mm. Clams in the mid and low tidal zones were more infested. There was no significant relationship between clam length–crab width (R2 = 0.28). The mean fecundity of crabs was 2517 ± 864 eggs. Infection caused a reduction of flesh weight of clams. There was no significant correlation between the frequency of crabs' occurrence and the temporal variability of water temperature, salinity, dissolved oxygen and pH in different months. This study provides the first report of the distribution of pea crabs A. tivelae in A. umbonella, a new clam host record in Iran.

Record of Chaceon alcocki Ghosh & Manning, 1993 from the Arabian Sea, off Kollam, India

Crustaceana ◽  
2019 ◽  
Vol 92 (6) ◽  
pp. 749-755
Author(s):  
Jose Josileen ◽  
G. Maheswarudu ◽  
L. Sreesanth
Keyword(s):  
Deep Sea ◽  
Arabian Sea ◽  
Carapace Length ◽  
Carapace Width ◽  
Zoological Survey ◽  
Total Weight ◽  
Single Female ◽  
Female Crab ◽  
Kerala State

Abstract The deep-sea crab Chaceon alcocki Ghosh & Manning, 1993 was recorded from the Arabian Sea off the Kollam coast, Kerala, India, in November 2015. A single female crab with 156 mm carapace width (CW), 146 mm carapace length (CL) and a total weight (TW) of 655 g, was collected from multiday trawl landings at the Sakthikulangara landing centre, Kollam, Kerala state. This species was first described by Ghosh & Manning in 1993, and the holotype, also a female crab, is kept in the Zoological Survey of India, Kolkata [formerly known as Calcutta].

scholarly journals Studies on the morphometry of Macrobrachium nobilii (Decapoda, Palaemonidae)

2004 ◽  
Vol 47 (3) ◽  
pp. 441-449 ◽  
Author(s):  
Pitchaimuthu Mariappan ◽  
Chellam Balasundaram
Keyword(s):  
Carapace Length ◽  
Carapace Width ◽  
Freshwater Prawn ◽  
Growth Constant ◽  
Morphometric Characters ◽  
Positive Allometry ◽  
Total Length ◽  
Significant Difference

Fourteen morphometric characters of Macrobrachium nobilii (Henderson and Matthai, 1910), a freshwater prawn were measured from 72 males and 66 females collected at random in field. The growth constant (b) of total length and weight for male (4.28) and female (3.02) differed significantly (P<0.05). Comparison of slopes and elevations of regressions between sexes indicated significant difference in all the studied dependent parameters with carapace length (X), except with carapace width (Y). In males, major and minor chelipeds showed positive allometry while in females the growth was isometric.

Outcome of Patch Test on Crack Sole among Bangladeshi Population

2020 ◽  
Vol 7 (2) ◽  
pp. 64-67
Author(s):  
Abu Sayeed Mohammad ◽  
Shahadat Hossain ◽  
Zulfiqur Hossain Khan
Keyword(s):  
Patch Test ◽  
Clinical History ◽  
Significant Morbidity ◽  
Exclusion Criteria ◽  
Study Population ◽  
Bangladeshi Population ◽  
One Year ◽  
Medical University ◽  
Age Range ◽  
Test Result

Background: Crack sole may produce significant morbidity among the physical labourer. Objective: The purpose of this study was to find out the patch test result in crack sole which was due to allergic contactants. Methodology: This test was conducted in the Department at Dermatology and Venereology of Bangabandhu Sheikh Mujib Medical University (BSMMU), Dhaka, Bangladesh from July 2001 to June 2002 for a period of one year. Patients with crack sole were selected as study population. All patients were asked about the details clinical history. Patch test was done by individually prepared alminium Finn Chamber mounted on scanpore tape. Result: A total number of 15 patients were recruited for this study after fulfilling the inclusion and exclusion criteria. The age range was 8 years to 70 years. Among 15 patients 3 patients were patch test positive remaining 12 patients were patch test negative. Two patient were female and one was male. Conclusion: In conclusion patch test is positive among the crack sole patients. Journal of Current and Advance Medical Research 2020;7(2): 64-67

Usia Resiko Tinggi dan Perdarahan Post Partum

2018 ◽  
Vol 3 (2) ◽  
pp. 91
Author(s):  
Ani Media Harumi ◽  
Kasiati Kasiati
Keyword(s):  
High Risk ◽  
Post Partum ◽  
Chi Square ◽  
Sample Number ◽  
Chi Square Test ◽  
Study Population ◽  
Relationship Of ◽  
The Relationship

Abstract: The purpose of this study is to analyze the relationship of age high risk with the incidence ofbleeding post partum in dr. M. Soewandhie Surabaya hospital. This research is analytic with an approachof a sectional cross. The study population was all post partum mothers in the Dr. M. Soewandhie Surabayahospital in January 2016 to March 2017, which amounts to an average of 1840respondents while theresearch sample number 182. Measuring collection sheet data obtained by systematic random sampling.The Study was conducted Chi-Square test obtained mean count X2 (0,00) is less than á (0.05) thenH0 is rejected and H1 accepted it means that there is a relationship between the age of high risk withbleeding post partum. Conclusion, there is a relationship between the age of high risk with the incidenceof bleeding post partum in the Spaceof the Maternity room Dr. Moch. Soewandhie Surabayahospital.

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