Copepoda are one of the most significant animal groups present in aquatic ecosystems.Ecologists,evolutionary biologists,and biotechnologists continue to test new methods to study the application of Copepoda as model o...Copepoda are one of the most significant animal groups present in aquatic ecosystems.Ecologists,evolutionary biologists,and biotechnologists continue to test new methods to study the application of Copepoda as model organisms in various fields of pure and applied science,from evolution and ecology to aquaculture as live feed,as biological control of mosquito larvae,as biological indicators of water and sediment quality,in environmental monitoring and as a source of protein in the food industry.This paper reviews the current progress and trends within copepod research from a number of different perspectives.We emphasize the importance of Copepoda and the necessity of strengthening research on various topics related to copepod biology,some of which are of great significance to local sustainable development.展开更多
The knowledge of the chemical composition of invertebrates as sea cucumber contributes to improving our understanding of these living organisms. This study compared the chemical composition of wild sea cucumber Isosti...The knowledge of the chemical composition of invertebrates as sea cucumber contributes to improving our understanding of these living organisms. This study compared the chemical composition of wild sea cucumber Isostichopus sp., between February 2013 and January 2014. Sea cucumbers were captured by hand by artisanal fishermen and transported alive to the laboratory of Aquaculture of the Universidad del Magdalena (Colombia), where they were subsequently killed and taken to freeze until analysis. For proximate analysis 20 g of muscle were used for each sample. The analysis (in triplicate) was performed according to [1]. Significant differences (p Isostichopus sp. was similar to that reported for fresh sea cucumbers internationally traded, which indicates that it is a species with a competitive commercial value for use in food.展开更多
Sea cucumbers are common foods in Asian culture. They are commonly eaten as dry-salted. Thus, a dry-salting protocol for cucumbers includes the processes of: gutting, cooking, salting, drying and packing. Drying trial...Sea cucumbers are common foods in Asian culture. They are commonly eaten as dry-salted. Thus, a dry-salting protocol for cucumbers includes the processes of: gutting, cooking, salting, drying and packing. Drying trials were conducted at 50℃ and 60℃ in an oven and air-dried, with no difference (P > 0.05) in yield observed between them. Protein content varied depending on the type of drying, while fat content did not change significantly (P > 0.05). Final yield ranged between 5% to 7% of initial mass, with the main losses in mass (due to water loss) registered in the gutting and cooking stages. The sea cucumbers dried in an oven at 60℃ reached the humidity goal faster and there were statistically significant differences (P Isostichopus sp. aff badionotus is for consumers a viable alternative source of protein.展开更多
Attention is a cognitive and psychobiological variable that lacks objective measures in natural contexts of formal learning. However, it can be objectively measured from the heart autonomic activity. In the present st...Attention is a cognitive and psychobiological variable that lacks objective measures in natural contexts of formal learning. However, it can be objectively measured from the heart autonomic activity. In the present study, the validity and reliability of a system for recording heart rate variability are demonstrated. Twelve prototypes were created and paired with standard electrocardiogram. Long segments with cardiac pulse recordings were used within ten minutes. A highly significant correlation index (p < 0.01) and a significantly high Cronbach’s alpha were obtained. In the variance analysis, all data analyzed presented a value of p < 0.05. It is concluded that there is no significant variation between paired systems;therefore, the attention detection system based on heart rate variability is valid and reliable.展开更多
Dear Editor,New World cutaneous leishmaniasis is a vector-borne neglected tropical disease caused by infection with protozoan parasites of the genus Leishmania;most of them included in the subgenus Viannia,which are t...Dear Editor,New World cutaneous leishmaniasis is a vector-borne neglected tropical disease caused by infection with protozoan parasites of the genus Leishmania;most of them included in the subgenus Viannia,which are transmitted by the bites of infected female phlebotomine sandflies[1].In Colombia L.panamensis and L.braziliensis are the most frequent species associated with cutaneous leishmaniasis[2].The spectrum of New World cutaneous leishmaniasis includes single or multiple,localized,cutaneous ulcers;diffuse cutaneous leishmaniasis;disseminated cutaneous leishmaniasis;and mucosal leishmaniasis[3].展开更多
基金Supported by the Open Project of the Key Laboratory of Fish Conservation and Utilization in the Upper Reaches of the Yangtze River of Sichuan Province(No.NJSYKF-002)the National Natural Science Foundation of China(Nos.41961144013,41706191)+2 种基金the Scientific Research Fund of the Second Institute of Oceanography,MNR(No.JT1803)the Natural Science Foundation of Zhejiang Province(No.LY20D060004)the Scientific Research Project of Education Department of Sichuan Province(No.18ZA0283)。
文摘Copepoda are one of the most significant animal groups present in aquatic ecosystems.Ecologists,evolutionary biologists,and biotechnologists continue to test new methods to study the application of Copepoda as model organisms in various fields of pure and applied science,from evolution and ecology to aquaculture as live feed,as biological control of mosquito larvae,as biological indicators of water and sediment quality,in environmental monitoring and as a source of protein in the food industry.This paper reviews the current progress and trends within copepod research from a number of different perspectives.We emphasize the importance of Copepoda and the necessity of strengthening research on various topics related to copepod biology,some of which are of great significance to local sustainable development.
文摘The knowledge of the chemical composition of invertebrates as sea cucumber contributes to improving our understanding of these living organisms. This study compared the chemical composition of wild sea cucumber Isostichopus sp., between February 2013 and January 2014. Sea cucumbers were captured by hand by artisanal fishermen and transported alive to the laboratory of Aquaculture of the Universidad del Magdalena (Colombia), where they were subsequently killed and taken to freeze until analysis. For proximate analysis 20 g of muscle were used for each sample. The analysis (in triplicate) was performed according to [1]. Significant differences (p Isostichopus sp. was similar to that reported for fresh sea cucumbers internationally traded, which indicates that it is a species with a competitive commercial value for use in food.
基金supported by Vicerrectoria de Investigacion de la Universidad del Magdalena and the Sistema General de Regalias-Grants(Gobernacion del Magdalena,Colombia-Convenio 090/2014-2015).
文摘Sea cucumbers are common foods in Asian culture. They are commonly eaten as dry-salted. Thus, a dry-salting protocol for cucumbers includes the processes of: gutting, cooking, salting, drying and packing. Drying trials were conducted at 50℃ and 60℃ in an oven and air-dried, with no difference (P > 0.05) in yield observed between them. Protein content varied depending on the type of drying, while fat content did not change significantly (P > 0.05). Final yield ranged between 5% to 7% of initial mass, with the main losses in mass (due to water loss) registered in the gutting and cooking stages. The sea cucumbers dried in an oven at 60℃ reached the humidity goal faster and there were statistically significant differences (P Isostichopus sp. aff badionotus is for consumers a viable alternative source of protein.
文摘Attention is a cognitive and psychobiological variable that lacks objective measures in natural contexts of formal learning. However, it can be objectively measured from the heart autonomic activity. In the present study, the validity and reliability of a system for recording heart rate variability are demonstrated. Twelve prototypes were created and paired with standard electrocardiogram. Long segments with cardiac pulse recordings were used within ten minutes. A highly significant correlation index (p < 0.01) and a significantly high Cronbach’s alpha were obtained. In the variance analysis, all data analyzed presented a value of p < 0.05. It is concluded that there is no significant variation between paired systems;therefore, the attention detection system based on heart rate variability is valid and reliable.
文摘Dear Editor,New World cutaneous leishmaniasis is a vector-borne neglected tropical disease caused by infection with protozoan parasites of the genus Leishmania;most of them included in the subgenus Viannia,which are transmitted by the bites of infected female phlebotomine sandflies[1].In Colombia L.panamensis and L.braziliensis are the most frequent species associated with cutaneous leishmaniasis[2].The spectrum of New World cutaneous leishmaniasis includes single or multiple,localized,cutaneous ulcers;diffuse cutaneous leishmaniasis;disseminated cutaneous leishmaniasis;and mucosal leishmaniasis[3].
