Reproductive seasonal periodicity of the endemic Bermuda killifish Fundulus bermudae in an anchialine pond

A total of 245 individuals from a population of the endemic Bermuda killifish Fundulus bermudae in an isolated anchialine pond (Mangrove Lake) were trapped between November 2004 and November 2005. Laboratory analysis of gonad development allowed determination of the seasonal reproductive cycles of both females and males. A distinctive annual pattern was evident, with female and male gonadal cycles synchronous throughout the study period. The results indicate that the F. bermudae males and females began their spawning season in February, but reached primary peaks in May and June respectively. Gonadal indices abruptly fell after June and continued to fall at a steady rate until September, marking the end of the spawning season. Gonad recrudescence, as indicated by basal gonad indices, occurred in September and lasted throughout the autumn and early winter months.

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REPRODUCTIVE ASPECTS OF THE TROPICAL ABALONE, HALIOTIS ASININA, FROM SOUTHERN LOMBOK WATERS, INDONESIA

Marine Research in Indonesia ◽

10.14203/mri.v30i0.420 ◽

2018 ◽

Vol 30 ◽

pp. 1-14 ◽

Cited By ~ 1

Author(s):

Dwi E.D. Setyono

Keyword(s):

Environmental Factors ◽

Reproductive Strategy ◽

Gonad Development ◽

Gonad Index ◽

Gonadal Development ◽

Spawning Season ◽

Oocyte Size ◽

Size Frequency Distribution ◽

Haliotis Asinina ◽

Males And Females

The main objective of this study was to determine reproductive strategy including major spawning season of tropical abalone (Haliotis asinina) from southern Lombok waters, Indonesia. Gonad bulk index, maturity stages and oocyte size frequency distribution were applied to document gonadal development and major spawning season. The results of this study show that H. asinina in southern Lombok waters displayed year-round spawning with a high proportion occurring in August - November, when gonad index dropped to a lower level and high proportion of partly spawned and/or spent ovaries occurred in the population. Gonad development and spawning in males and females occurred synchronously. The correlation between gonadal development and environmental factors are described and discussed.

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Methods for the determination of organic substances in water and fluvial sediments, USGS TWRI, Book 5, Laboratory analysis, Chapter A3

Open-File Report ◽

10.3133/ofr821004 ◽

1982 ◽

Cited By ~ 6

Keyword(s):

Laboratory Analysis ◽

Fluvial Sediments ◽

Organic Substances

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AVALIAÇÃO DO CONHECIMENTO TRADICIONAL DOS PESCADORES DA RDSM APLICADO À IDENTIFICAÇÃO DO SEXO DE PIRARUCUS

Scientific Magazine UAKARI ◽

10.31420/uakari.v5i2.67 ◽

2010 ◽

Vol 5 (2) ◽

pp. 59-66

Author(s):

Kelven Lopes ◽

Helder Lima de Queiroz

Keyword(s):

Sex Determination ◽

Traditional Knowledge ◽

Structured Interviews ◽

Sustainable Fisheries ◽

Arapaima Gigas ◽

Males And Females

This study examined the traditional knowledge of fishermen at Mamirauá Reserve about sex determination of pirarucus, Arapaima gigas Schinz 1822. We evaluated the criteria used for by fishermen in the sector Jarauá at Mamirauá Reserve for this determination, during the fisheries season, from October to November 2004. We analyzed responses of a group of about 15 fishermen collected in structured interviews regarding 109 individual pirarucus, 65 males and 44 females. From this sample, only 64 fish have their sex correctly predicted by the fishermen. Although the traditional knowledge of local fishermen is a key component of the sustainable fisheries of this species, this knowledge is not functional in all ranges and aspects, as in sex distinction. We found that the local fishermen evaluated are not able to recognize the sex of pirarucus, although some criteria applied for this purpose are consistent with their biology. The rates of correct forecasts for recognition of males and females were similar to those obtained by chance, even when the criteria applied were consistent, as the criterion “coloration”, which was significantly consistent for identification of males. Yet the group of fishermen interviewed in this study apparently did not apply this criterion correctly.

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Determination of NORM vector according to laboratory analysis of soil samples in the area of NPP A1 in Slovakia

10.1063/5.0068228 ◽

2021 ◽

Author(s):

Dávid Bednár ◽

Jakub Dolniak ◽

Martin Lištjak ◽

Vladimír Nečas

Keyword(s):

Soil Samples ◽

Laboratory Analysis

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Disposal of blood [1-13C]lactate in humans during rest and exercise

Journal of Applied Physiology ◽

10.1152/jappl.1986.60.1.232 ◽

1986 ◽

Vol 60 (1) ◽

pp. 232-241 ◽

Cited By ~ 113

Author(s):

R. S. Mazzeo ◽

G. A. Brooks ◽

D. A. Schoeller ◽

T. F. Budinger

Keyword(s):

Blood Lactate ◽

Lactate Concentration ◽

Blood Lactate Concentration ◽

Curvilinear Relationship ◽

O2 Consumption ◽

Lactate Oxidation ◽

Respiratory Parameters ◽

Steady Rate ◽

Lactate Levels

Lactate irreversible disposal (RiLa) and oxidation (RoxLa) rates were studied in six male subjects during rest (Re), easy exercise [EE, 140 min of cycling at 50% of maximum O2 consumption (VO2max)] and hard exercise (HE, 65 min at 75% VO2max). Twenty minutes into each condition, subjects received a Na+-L(+)-[1–13C]lactate intravenous bolus injection. Blood was sampled intermittently from the contralateral arm for metabolite levels, acid-base status, and enrichment of 13C in lactate. Expired air was monitored continuously for determination of respiratory parameters, and aliquots were collected for determination of 13C enrichment in CO2. Steady-rate values for O2 consumption (VO2) were 0.33 +/- 0.01, 2.11 +/- 0.03, and 3.10 +/- 0.03 l/min for Re, EE, and HE, respectively. Corresponding values of blood lactate levels were 0.84 +/- 0.01, 1.33 +/- 0.05, and 4.75 +/- 0.28 mM in the three conditions. Blood lactate disposal rates were significantly correlated to VO2 (r = 0.78), averaging 123.4 +/- 20.7, 245.5 +/- 40.3, and 316.2 +/- 53.7 mg X kg-1 X h-1 during Re, EE, and HE, respectively. Lactate oxidation rate was also linearly related to VO2 (r = 0.81), and the percentage of RiLa oxidized increased from 49.3% at rest to 87.0% during exercise. A curvilinear relationship was found between RiLa and blood lactate concentration. It was concluded that, in humans, 1) lactate disposal (turnover) rate is directly related to the metabolic rate, 2) oxidation is the major fate of lactate removal during exercise, and 3) blood lactate concentration is not an accurate indicator of lactate disposal and oxidation.

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ESTIMATION OF PHOSPHORUS AND NITROGEN RELEASED BY THE BREEDING OF OREOCHROMIS NILOTICUS IN CAGES IN THE TOHO AND TODOUGBA LAGOONS(SOUTHER BENIN) BETWEEN 2017 AND 2020

International Journal of Advanced Research ◽

10.21474/ijar01/13759 ◽

2021 ◽

Vol 9 (11) ◽

pp. 422-430

Author(s):

Achoh Mardochee Ephraim ◽

◽

Agadjihouede Hyppolite ◽

Gangbe Luc ◽

Aizonou Romaric ◽

...

Keyword(s):

Organic Matter ◽

Water Column ◽

Oreochromis Niloticus ◽

Nutrient Release ◽

Laboratory Analysis ◽

The Other ◽

Production Data ◽

Nitrogen Concentrations ◽

High Production

The present study aim to estimate the ratio of aquaculture in the phosphorus and nitrogen concentrations determined in the Toho - Todougba lagoons. For this purpose, the two lagoons were subdivided into 7 stations for the determination of phosphorus and nitrogen concentrations in the water column. Production data from 2017 to 2019 were collected from the Direction of the Ficheries Production and from the literature. Data for 2020 were collected directly from fish farmers. Annual tilapia production was estimated by year and the amounts of phosphorus and nitrogen released from aquaculture are deduced based on the ratio of Montanhini Neto & Ostrensky (2013). The concentration of each of these nutrients was estimated by station and compared to the concentration determined by laboratory analysis of the water. This methodology shows that the amount of phosphorus and nitrogen released to the environment varies from 0.49 mg/L to 0.18 mg/L for phosphorus and from 1.53 mg/L to 0.58 mg/L for nitrogen. The lowest values are obtained in 2020 and differ significantly from the other years (p <0.05). The quantity of phosphorus discharged is higher at the high production stations (Tonon 0.20 mg/L and Lokohoue 0.11 mg/L). Some of this is stored in the sediment. The nitrogen generated by aquaculture is significantly lower than the average determined in water (p <0.05). However, the concentration determined is still related to the amount of organic matter released due to aquaculture. Although aquaculture is not the only source of nutrient release to water, strategies for aquaculture with less nutrient release should be determined.

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Cognitive Aspects Of Family Self-Determination Of Young Males And Females

10.15405/epsbs.2019.02.02.44 ◽

2019 ◽

Author(s):

S. V. Merzlyakova

Keyword(s):

Self Determination ◽

Young Males ◽

Males And Females

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Determination of high sensitive cardiac troponin I 99th percentile upper reference limits in a healthy Pakistani population

Pakistan Journal of Medical Sciences ◽

10.12669/pjms.36.6.2328 ◽

2020 ◽

Vol 36 (6) ◽

Author(s):

Kulsoom Bahadur ◽

Aamir Ijaz ◽

Momin Salahuddin ◽

Aftab Alam

Keyword(s):

Cardiac Troponin ◽

Troponin I ◽

Laboratory Data ◽

Cardiac Troponin I ◽

Medical Institute ◽

Pakistani Population ◽

Reference Limits ◽

Males And Females ◽

Gender Specific

Objective: This study aims to establish the 99th percentile upper reference limits of high sensitive cardiac troponin I in a healthy Pakistani population. Methods: It was an Observational cohort study carried out in Department of Chemical Pathology and Endocrinology Rehman Medical Institute Peshawar, over the period of one year (January 2019- December 2019). Total 299 cardio-healthy males and females were interviewed and taken past medical history. Based on history, clinical examination, echocardiogram and laboratory data including results of estimated glomerular filtration rate (eGFR) and N-terminal pro-B-type natriureteric peptide (NT-proBNP), subjects with possible subclinical diseases were excluded. High Sensitive Cardiac Troponin I (hs-cTtrop I) was analysed on Abbot ARCHITECT STAT ci8200 using chemiluminescent immunoassay technique. The 99th percentile upper reference limit (URL) of hs-cTtrop I was determined using a non-parametric statistic, while gender specific results were compared. Results: In this study, 178 males (59.5%) and 121 females (40.5%) were included. The median Interquartile ranges (IQR) of age was 57 (11.6) for males and 56 (13) for females. The 99th percentile URL hs-cTtrop I was found to be 33.9 ng/L, while gender specific values were 38.41ng/L and 15.73ng/L for males and females, respectively (p= 0.0045). Conclusion: High sensitivity cardiac troponin I 99th percentile URL in our study population was found to be 33.9 ng/L with gender specific values being 38.41 ng/L and 15.73ng/L for males and females respectively. Troponin I in males was substantially high in comparison with females. doi: https://doi.org/10.12669/pjms.36.6.2328 How to cite this:Bahadur K, Ijaz A, Salahuddin M, Alam A. Determination of high sensitive cardiac troponin I 99th percentile upper reference limits in a healthy Pakistani population. Pak J Med Sci. 2020;36(6):---------. doi: https://doi.org/10.12669/pjms.36.6.2328 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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REPRODUCTIVE ASPECTS OF SCALLOPED PERCHLET, Ambassis nalua (HAMILTON, 1822) IN PABEAN BAY INDRAMAYU, WEST JAVA

Jurnal Ilmu dan Teknologi Kelautan Tropis ◽

10.28930/jitkt.v9i1.17921 ◽

2017 ◽

Vol 9 (1) ◽

pp. 113

Author(s):

Nisha Desfi Arianti ◽

M.F. Rahardjo ◽

Ahmad Zahid

Keyword(s):

Sex Ratio ◽

Sampling Period ◽

Spawning Season ◽

West Java ◽

Fish Samples ◽

Length Range ◽

Males And Females ◽

Mature Fish ◽

First Maturity ◽

Somatic Index

ABSTRACTScalloped perchlet, Ambassis nalua, is one of fishes in Pabean Bay, Indramayu. This research aims to determine the reproductive aspects of Ambassis nalua in Pabean Bay Indramayu including sex ratio, spawning season, first maturity, fecundity and spawning pattern. Fish samples were collected by trap net and trammel net at three sites in Pabean Bay from April to October 2015. A total of 424 of A. nalua were caught, consist of 114 males and 310 females; with total length ranged from 38.04 to 112.63 mm and total weight ranged from 0.37 to 25.44 g. Sex ratio of mature fish was 1:1.9. The mature males and females were found in every month of sampling period. The gonado-somatic index (GSI) ranged from 0.40 to 0.83 and 2.36 to 4.54 for male and female, respectively. The peak of spawning season was found in September. The first maturity (Lm50) for male and female were 79.17 mm and 91.25 mm, respectively. The fecundity varied from 3,451–32,465 eggs. Egg diameter distribution shows that spawning pattern of A. nalua was batch spawner. Keywords: Ambassis nalua, spawning season, sex ratio, reproduction

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A comparative account of the reproductive cycles of five species of marine mussels (Bivalvia: Mytilidae) in the vicinity of Fremantle, Western Australia

Marine and Freshwater Research ◽

10.1071/mf9670175 ◽

1967 ◽

Vol 18 (2) ◽

pp. 175 ◽

Cited By ~ 53

Author(s):

BR Wilson ◽

EP Hodgkin

Keyword(s):

Reproductive Cycle ◽

Western Australia ◽

Marine Species ◽

Spawning Season ◽

Latitudinal Distribution ◽

Marine Mussels ◽

Reproductive Cycles ◽

Determining Factor ◽

Pacific Species

Descriptions are given of the reproductive cycles of five marine species of mussels. Two of these species have a southern Australian distribution and three are tropical Indo-Pacific species or have Indo-Pacific affinities. The reproductive cycles differ significantly, each species exhibiting a characteristic breeding pattern. A distinction is drawn between the season of gametogenic activity and the much narrower season of actual spawning. In four of the species the major features of the reproductive cycle correlate with latitudinal distribution. This is interpreted as evidence supporting the role of temperature as a principal determining factor in the control of broader aspects of the reproductive cycle (i.e. duration and season of gametogenic activity). Differences in finer details of the reproductive cycles (e.g. spawning season and number of spawning peaks) appear to be controlled by unknown factors besides temperature.

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