scholarly journals Reproductive activity of the frog Dendrobates auratus Girard in captivity breeding

2010 ◽  
Vol 58 (5) ◽  
pp. 209-222
Author(s):  
Romana Křížová
Keyword(s):  
Mortality Rate ◽  
Total Duration ◽  
Total Mortality ◽  
Reproductive Activity ◽  
Egg Laying ◽  
The Family ◽  
New Knowledge ◽  
In Captivity ◽  
Dendrobates Auratus ◽  
Duration Of Development

Research of the reproduction activities of Dendrobates auratus Girard, 1855 is part of a broader ana­ly­sis of the problems encountered when keeping frogs from the family Dendrobatidae in captivity. The aim is to achieve an optimization of measures for successful breeding of these amphibians, for both the amateur hobbyist and conservationist alike. Due to the wide area they have colonized, many colour variations exist; the reproduction parameters of six differently coloured examples of the species were tracked. The collection of data happened in standardized conditions over two consecutive years (2007, 2008) and was aimed at measuring five indicators concerning reproduction, understanding of egg-laying dynamics during a year, measuring the risk of stock loss during different stages of development and determining if any differences existed between the different colour variations in these parameters. A noticable alternating cycle of rest and reproduction activities has been observed between equinoxes. In the harvest there were usually 5–10 eggs with an average incubation period of 10 days (8–18) at a temperature of 22 °C. The total duration of development was on average 74 days (64–103). The number of eggs in a harvest and the duration of incubation were statistically dif­fe­rent with the blue form between different observed periods. Total mortality rate during ontogenesis reached 10–53%, the highest losses were in the period when the tadpole left its egg and began developing its hind legs, 5–60%. The optimisation of breeding conditions has been reccommended. Secondary be­ne­fits of this study research was the collection of new knowledge about ethology of this species in captivity.

scholarly journals Population Parameters of Two Commercially Important Species belonging to the Family Sciaenidae Encountered in the Coast of Ghana

2020 ◽  
pp. 21-29
Author(s):  
Samuel K. K. Amponsah ◽  
Selasi Yao Avornyo ◽  
Kofi Ferni Anyan
Keyword(s):  
Mortality Rate ◽  
Fish Species ◽  
Coastal Waters ◽  
Total Mortality ◽  
Population Parameters ◽  
Recruitment Pattern ◽  
Important Species ◽  
The Family ◽  
Exploitation Rate ◽  
Commercially Important

Population parameters for two commercially important fishes of Sciaenidae from the coastal waters of Ghana were assessed using length-frequency data obtained from August 2017 to June 2019. Samples of the assessed fish species were obtained through experimental fish trawl along the coast of Greater Accra, Ghana. Trawling was performed every quarter for an average of one hour at an average speed of 3.0 km/hr. In all, a total of 399 samples were measured and the obtained data were analyzed with FiSAT II. The assessed fish species included Pteroscion peli (165 samples) and Pseudotolithus senegalensis (234 samples). The asymptotic length (L∞) was 19.4 cm and 41.5 cm forPteroscion peli and Pseudotolithus senegalensis. Pteroscion peli and Pseudotolithus senegalensis recorded growth rate (K) of 0.48 and 0.50 per year respectively. Both assessed fish species exhibited continuous recruitment pattern with minor and major recruitment peaks. The total mortality rate (Z) was 1.86 and 1.63 per year for Pteroscion peli and Pseudotolithus senegalensis. The fishing mortality rate (F) was estimated at 0.66 and 0.63 per year for Pteroscion peli and Pseudotolithus senegalensis. The natural mortality rate (M) estimated for Pteroscion peli and Pseudotolithus senegalensis was 1.20 and 1.00 per year respectively. The exploitation rate (E) of Pseudotolithus senegalensis (0.39) and Pteroscion peli (0.36) respectively was far below the maximum exploitation rate (Emax), indicating under-exploitation of its fishery in the coastal waters of Ghana, hence the need to enhance the exploitation of these species.

scholarly journals Growth Parameters of Sentani Gudgeon Fish (Oxyeleotris heterodon) in Sentani Lake, Papua

2021 ◽  
Vol 2 (1) ◽  
pp. 10
Author(s):  
Herlan Herlan ◽  
Tuah Nanda Merlia Wulandari
Keyword(s):  
Mortality Rate ◽  
Native Species ◽  
Growth Parameters ◽  
Population Decline ◽  
Total Mortality ◽  
Environmental Pressures ◽  
Growth Coefficient ◽  
Asymptotic Size ◽  
The Family ◽  
Average Catch

ABSTRACTThe Sentani Gudgeon Fish (Oxyeleotris heterodon, Weber 1907) from the family Butidae with the general name Sentani Gudgeon is known locally as Gabus Malas and Himen. Sentani Snakehead Fish is one source of animal protein that is very important for the community around Lake Sentani. The population of the Sentani Gudgeon Fish species is at a crucial level. The issue could be affected by environmental pressures, continuous catches, competition with introduced species from outside Papua, intensive predation systems, and imbalances in ecological systems. The condition made a decline in population size until it became extinct. Gudgeon Sentani fish is the main target of catching in the lake. This condition significantly affects stock, size when first captured, population decline, reproductive cycle, and average catch. Until now, data and information on the growth of snakehead fish as the basis for fisheries management in the waters of Lake Sentani are not widely known. Considering the importance of preserving the native species of Lake Sentani, especially the Snakehead Fish, efforts to manage the fisheries in Lake Sentani's waters are urgent. This research was conducted in March - October 2020, located at Lake Sentani. The specimens were obtained from the catch of fishers with various gill nets and chopsticks. Enumerators or field assistants assisted the recording of the number and measurement of the total length of fish caught by fishermen daily. The results of the analysis showed: asymptotic size (L?) 46.20 cm, growth coefficient (K) 0.29, the total mortality rate (Z) 0.80 per year, natural mortality (M) 0.74 per year, the mortality rate due to fishing (F) 0.06 per year and exploitation rate (E) 0.075 per year.

scholarly journals Haematological reference of snakes: Amazon tree boa (Corallus hortulanus, Linnaeus, 1758) and Burmenese Python (Python bivittatus, Kuhl, 1820) in captive

2018 ◽  
Vol 70 (4) ◽  
pp. 1172-1178
Author(s):  
A.E. Quadrini ◽  
V.C. Garcia ◽  
B.C. Freire ◽  
M.F.M. Martins
Keyword(s):  
Blood Count ◽  
Complete Blood Count ◽  
Leukocyte Count ◽  
Differential Leukocyte Count ◽  
Healthy State ◽  
The Family ◽  
In Captivity ◽  
Clinical Diagnoses ◽  
Maintenance Techniques ◽  
Python Bivittatus

ABSTRACT Hematology has become important for making clinical diagnoses in snakes because maintenance techniques in captivity have been improving and increasing their life expectancy. The emergence of diseases in captivity requires the creation of parameters to understand the species in their healthy state. The possible association between the onset of neoplasia, immunosuppression, and viral infection are also important factors to consider. Thus, hematology is a fundamental tool for observing the responses of animals to diseases and treatments. The present study aims to study hematology between two species of snakes and compare the profiles observed with published results. Blood samples were collected from 16 male and female snakes: seven Corallus hortulanus from the family Boidae and nine Python bivittatus from the family Pythonidae belonging to the Biological Museum of the Butantan Institute, São Paulo, Brazil. Complete blood count results including blood smear, total erythrocyte count, leukocytes, and differential leukocyte count were evaluated. The data obtained in this study could help with the diagnosis, the treatment of snakes in captive conditions and in of nature conservation programs.

scholarly journals POPULATION DYNAMICS OF MALAYAN LEAF FISH (Pristolepisgrooti Blkr.) IN RANAU LAKE, SOUTH SUMATRA

2018 ◽  
Vol 24 (2) ◽  
pp. 125
Author(s):  
Sevi Sawetri ◽  
Subagdja Subagdja ◽  
Dina Muthmainnah
Keyword(s):  
Mortality Rate ◽  
Growth Parameters ◽  
Total Mortality ◽  
Natural Mortality ◽  
Fishing Mortality ◽  
Frequency Data ◽  
Length Frequency ◽  
Lake Ecosystems ◽  
Exploitation Rate ◽  
Length Frequency Data

The Malayan leaf fish or locally named as kepor (Pristolepis grooti) is one of important biotic components in Ranau Lake ecosystems. This study aimed to estimate population dynamic and exploitation rate of kepor in Ranau Lake, South Sumatera. The population parameters are estimated based on length frequency data which were collected in March to October 2013. Growth parameters and fishing mortality rates were calculated using FiSAT software package. The results showed that kepor’s growth was negative allometric, which tended to gain length faster than weight. Kepor population was dominated (42%) by individual length of 10.0 to 11.0 cm. Predicted length infinity (L) was 17.28 cm with high value of growth rates (K) of 1.4 year-1. The natural mortality rate (M) is 2.57 year-1, the fishing mortality rate (F) is 5.36 year-1 and total mortality rate (Z) is 7.93 year-1. The exploitation rate of Malayan leaf fish in Ranau Lake (E = 0.68 year-1) has passed the optimum score.  

scholarly journals Hybrid Closed-Loop System Achieves Optimal Perioperative Glycemia in a Boy With Type 1 Diabetes: A Case Report

2021 ◽  
Vol 9 ◽  
Author(s):  
Jesus Dominguez-Riscart ◽  
Nuria Buero-Fernandez ◽  
Ana Garcia-Zarzuela ◽  
Fernando A. Marmolejo-Franco ◽  
Ana C. Perez-Guerrero ◽  
...  
Keyword(s):  
Type 1 Diabetes ◽  
Blood Glucose ◽  
Insulin Infusion ◽  
Closed Loop ◽  
Total Duration ◽  
Blood Glucose Monitoring ◽  
Medical Team ◽  
The Family ◽  
The Impact

The goal in type 1 diabetes (T1D) therapy is to maintain optimal glycemic control under any circumstance. Diabetes technology is in continuous development to achieve this goal. The most advanced Food and Drug Administration- and European Medicines Agency-approved devices are hybrid closed-loop (HCL) systems, which deliver insulin subcutaneously in response to glucose levels according to an automated algorithm. T1D is frequently encountered in the perioperative period. The latest international guidelines for the management of children with diabetes undergoing surgery include specific adjustments to the patient's insulin therapy, hourly blood glucose monitoring, and intravenous (IV) insulin infusion. However, these guidelines were published while the HCL systems were still marginal. We present a case of a 9-year-old boy with long-standing T1D, under HCL system therapy for the last 9 months, and needing surgery for an appendectomy. We agreed with the family, the surgical team, and the anesthesiologists to continue HCL insulin infusion, without further adjustments, hourly blood glucose checks or IV insulin, while monitoring closely. The HCL system was able to keep glycemia within range for the total duration of the overnight fast, the surgery, and the initial recovery, without any external intervention or correction bolus. This is, to the best of our knowledge, the first reported pediatric case to undergo major surgery using a HCL system, and the results were absolutely satisfactory for the patient, his family, and the medical team. We believe that technology is ripe enough to advocate for a “take your pump to surgery” message, minimizing the impact and our interventions. The medical team may discuss this possibility with the family and patients.

scholarly journals Fecal cortisol metabolites as indicators of stress in crab-eating-fox (Cerdocyoun thous) in captivity

2015 ◽  
Vol 35 (10) ◽  
pp. 859-862 ◽  
Author(s):  
Regina C.R. Paz ◽  
Nely P. Souza ◽  
Janine L. Brown
Keyword(s):  
Fold Increase ◽  
Reproductive Activity ◽  
Biological Research ◽  
Non Invasive ◽  
Fecal Cortisol ◽  
Fecal Glucocorticoid Metabolites ◽  
Physiological Relevance ◽  
In Captivity ◽  
Invasive Method ◽  
Cortisol Metabolites

Abstract: Blood samples collection is a common method in biological research using domestic animals. However, most blood sampling techniques are complicated and highly invasive and may therefore not be appropriate for wildlife animals in research concerning stress. Thus, a non-invasive method to measure steroid hormones is critically needed. The first goal of this study was to determine how glucocorticoids concentrations are impacted by translocation and reproductive activity in crab-eating-fox (Cerdocyoun thous) in captivity. The physiological relevance of fecal glucocorticoid metabolites was further validated by demonstrating: (1) The translocation of a male to a females enclosure resulted in a 3.5-fold increase compared to baseline concentrations, (2) changes in adrenocortical activity, as reflected in concentrations of fecal cortisol metabolites during reproduction, gestation and lactation in females foxes, indicating that social interactions resulted in large increases of fecal glucocorticoids metabolites during the reproductive season. From these findings we conclude that fecal samples can be used for the non-invasive assessment of adrenocortical status in crab-eating-fox.

scholarly journals ANÁLISIS DEL CRECIMIENTO Y LA MORTALIDAD DE ANISOTREMUS INTERRUPTUS (GILL) (PERCIFORMES: HAEMULIDAE) EN LA COSTA DE COLIMA, MÉXICO

2016 ◽  
Vol 33 ◽  
Author(s):  
Elaine Espino Barr ◽  
Manuel Gallardo Cabello ◽  
Fernando González Orozco ◽  
Arturo Garcia Boa
Keyword(s):  
Mortality Rate ◽  
Growth Parameters ◽  
Total Mortality ◽  
Condition Index ◽  
First Year ◽  
The Third ◽  
Second Year ◽  
First Year Of Life ◽  
Mortality Analysis

This paper deals with the growth and mortality analysis of the burrito grunt A n i s o t remus interru p t u s on the coast of Colima, México. The estimated growth parameters are: L¥ = 50.59 cm; W¥ = 5,051.04 g; k = 0.147 years- 1; to = -0.916 years; A0 . 9 5 = 19.46 years. Most of the growth occurred during the first year of life, when the grunt grows 12.52 cm, the second year it grows 4.95 cm and the third, 4.60 cm. The highest value of the condition index took place between February and September. The total mortality rate (Z) was calculated as 0.53 years- 1. These values are basic for the plan of administration of the fishery of this species.

scholarly journals Preliminary observations on the effect of sudden changes of temperature on survival of young Matrinxã (Brycon cephalus) under laboratory conditions

2003 ◽  
Vol 33 (4) ◽  
pp. 719-722 ◽  
Author(s):  
Sérgio Fonsêca Guimarães ◽  
Atílio Storti Filho
Keyword(s):  
Mortality Rate ◽  
Initial Temperature ◽  
Average Length ◽  
Geographical Area ◽  
Total Mortality ◽  
Average Weight ◽  
Amazonian Fish ◽  
Different Temperatures ◽  
Species Groups ◽  
Preliminary Study

Matrinxã is a very promising amazonian fish for fish culture in Brazil. This study is aimed at determining the approximate tolerated temperature range in this species. Groups of ten young matrinxã specimens (15.1±0.8 cm average length and 58.3±10.3 g average weight) were subjected to 9 different temperatures for 24 hours without previous acclimation. Fish were transferred from an initial temperature of 27ºC to those ranging from 12 to 39ºC at 3ºC intervals. Both 12ºC and 39ºC temperatures were lethal for this species with 100% mortality rate. Following 2 minutes of exposure to 39ºC fish changed behavior, showing an increase in opercular movements and erratic swimming; mortality reached 100% after 18 minutes. At 12ºC, fish lost equilibrium immediately after exposure and started swimming erratically; after only 4 minutes fish became lethargic and remained immobile on the bottom of the tank. Total mortality was only evident following 24 hours. At 15ºC matrinxã lost equilibrium after 5 to 6 minutes of exposure but mortality was only 20% after 24 hours. Fish tolerated well temperatures ranging from 18 to 36ºC with 100% survival after 24 hours. This preliminary study suggests that temperatures between 18 and 36ºC are the approximate range normally tolerated by this species, although survival at other temperatures may be increased by gradually acclimating fish to the more severe increases or decreases in temperature. In addition, it indicates that matrinxã may be cultivated over a wide geographical area.

scholarly journals Clinical Experience of Antifungal Combination Therapy for Invasive Fungal Infections in Pediatric Hematological Malignancy Patients

2021 ◽  
Author(s):  
Saliha Kanık Yüksek ◽  
Aslınur Özkaya Parlakay ◽  
Belgin Gülhan ◽  
Neşe Yaralı ◽  
Namık Yaşar Özbek ◽  
...  
Keyword(s):  
Mortality Rate ◽  
Fungal Infections ◽  
Lymphoblastic Leukemia ◽  
Total Mortality ◽  
Complete Response ◽  
Hematologic Malignancies ◽  
Invasive Fungal Infections ◽  
Attributable Mortality ◽  
Combination Regimen ◽  
Pediatric Leukemia

Background: The role of combination regimens in the treatment of invasive fungal infections (IFI) in patients with hematologic malignancies remains unclear. This study was aimed to demonstrate experience data about combined antifungal therapy (CAT) in pediatric IFI patients with haematological malignancies. Methods: Between January 2014 and December 2017, a total of 33 IFI episodes in 28 patients with hematological malignancies were analyzed retrospectively. Results: Of the patients (19 with acute lymphoblastic leukemia, and 9 with acute myeloblastic leukemia), 21 (75%) had leukemia relapse and 7 (25%) had remission. IFI was classified as possible in 26 (78.8%) episodes, probable in 5 (15.1%) episodes, and proven in 2 (6.1%) episodes. LamB (%50) was the most preferred agent in monotherapy. Mean duration of monotherapy was 12.84 ± 4.28 (5-24) days. LamB plus voriconazole (54.5%) were the most common combination preference in CAT. Mean duration of CAT was 42.36 ± 36.4 days, and unchanged according to combination regimen type (p = 0.571). Total mortality rate and IFI attributable mortality rate were 60.7% vs 76.5%. Mortality rate was significantly higher in patients with relapse (p = 0.006). Complete response was obtained in 81.8% of surviving patients. Duration of neutropenia and CAT, and recovery time were not found statistically different in the episodes with/without death and according to relapse or remission status. Side effects due to CAT use were observed quite low level. Conclusion: CAT has been found to be safe in IFI episodes of pediatric leukemia. The result will contribute to the data about combined antifungal use in daily clinical practice in pediatric haematological patients with IFI.

scholarly journals Etoposide Plays an Important Role in Treatment of Lymphoma Associated Hemophagocytic Lymphohistiocytosis

Blood ◽  
2019 ◽  
Vol 134 (Supplement_1) ◽  
pp. 5341-5341
Author(s):  
Yue Song ◽  
Yini Wang ◽  
Jingshi Wang ◽  
Zhao Wang
Keyword(s):  
Mortality Rate ◽  
Hemophagocytic Lymphohistiocytosis ◽  
Initial Treatment ◽  
Conflicts Of Interest ◽  
Remission Rate ◽  
Total Mortality ◽  
High Dose Chemotherapy ◽  
High Dose ◽  
Inflammatory Status ◽  
Significant Difference

Background: Hemophagocytic lymphohistiocytosis (HLH) is a severe or even fatal inflammatory status caused by a hereditary or acquired immunoregulatory abnormality. It is divided into two categories: primary and secondary. Secondary HLH (sHLH) is often associated with and caused by infections, malignant tumors, and autoimmune diseases. Lymphoma associated HLH (LAHS) is one of the most common sHLH, usually presents worse prognosis higher mortality. The treatment strategy for LAHS is still controversial. Etoposide is one of the key drug in HLH-94/04 regimen. We sought to identify the importance of including etoposide in the initial treatment of LAHS, especially comparing with the high dose chemotherapy. Methods: The patients diagnosed as LAHS in our center between Jan 1 2015 and Dec 31 2017 were observed. Survival times were calculated from the date of diagnosis of HLH. All patients were followed up until death or 31 Dec 2018, whichever occurred first. Patients undergoing stem cell transplantation were censored on the date of that procedure. Results: There were 68 patients in total. The median age of the patients was 48 years (15-76 years). They were divided into two groups according to weather the initial treatment containing etoposide. There were 53 patients with initial etoposide and 15 without it. The baseline level between two group shows no differences (p>0.05). The treatment regimens with initial etoposide include HLH-94/04 regimen, DEP (doxorubicin-etoposide-methylprednisolone), L-DEP (PEG-aspargase and DEP regimen), E-CHOP (etoposide and CHOP regimen) and RE-CHOP; those without the initial etoposide, but high-dose chemotherapy, include CHOP/COP, R-CHOP/COP, L-CHOP, CVAD, L-GDP regimen and et al. The response rates of the 68 patients was 66.1%, with the CR rate of 25% (17/68) and PR rate of 41.1% (28/68). A total of 32 cases with initial etoposide achieved remission, and the remission rate was 71.7% (CR 28.3% and PR 43.4%). 7 cases with chemotherapy without etoposide achieved remission, and the remission rate was 46.7%. A significant difference was noted between the two groups (p<0.01). A total of 41 deaths occurred with a total mortality rate of 60.3%. There were 28 deaths in patients with initial etoposide (mortality rate 52.8%) and 13 deaths in the other group (mortality rate 86.6%). A significant difference in mortality was noted between the two groups (p=0.020). Comparing the long-time survival between two groups, the survival of the initial etoposide group (101w±13, 95%CI [76, 127]) is significantly better than that of the no initial etoposide group(37w±12.7, 95% CI [12.0, 61.9]) (p=0.43) (Figure 1). Conclusion: As one of the secondary HLHs, LAHS suffers the worst outcome among all the types of HLH. This study found that initial treatment including etoposide, comparing with the chemotherapy without etoposide, can provide higher response rate, lower mortality rate and better survival. Figure 1 Disclosures No relevant conflicts of interest to declare.

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