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Una revisión de Henicotherus Brèthes, 1928 (Coleoptera, Chryso- melidae, Chrysomelinae); género endémico y áptero de Chile 对Henicotherus bréthes的回顾，1928年（鞘翅目，Chryso Melidae，Chrysomelinea）；智利特有的快速属
IF 0.1 4区 生物学
GAYANA Pub Date : 2020-12-31 DOI: 10.4067/S0717-65382020000200101
V. Jerez, Jaime Pizarro-Araya
{"title":"Una revisión de Henicotherus Brèthes, 1928 (Coleoptera, Chryso- melidae, Chrysomelinae); género endémico y áptero de Chile","authors":"V. Jerez, Jaime Pizarro-Araya","doi":"10.4067/S0717-65382020000200101","DOIUrl":"https://doi.org/10.4067/S0717-65382020000200101","url":null,"abstract":"The genus Henicotherus Brethes 1928 and H. porteri Brethes 1928 are redescribed and a neotype is designated. A new species is described and biological and distributional data are given for both species. On the other hand, a new species registered in expeditions carried out in Chanaral Island (Atacama Region) and Choros Island (Coquimbo Region), in the Los Choros archipelago is described. Biological and distribution data for both species and recommendations regarding the conservation of Henicotherus species are given.","PeriodicalId":55128,"journal":{"name":"GAYANA","volume":null,"pages":null},"PeriodicalIF":0.1,"publicationDate":"2020-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41244802","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Sobre el uso de los conceptos de ciclo de vida e historia de vida en ecología y evolución 生命周期和生命史概念在生态学和进化中的应用
IF 0.1 4区 生物学
GAYANA Pub Date : 2020-12-31 DOI: 10.4067/S0717-65382020000200093
Christian M. Ibáñez
{"title":"Sobre el uso de los conceptos de ciclo de vida e historia de vida en ecología y evolución","authors":"Christian M. Ibáñez","doi":"10.4067/S0717-65382020000200093","DOIUrl":"https://doi.org/10.4067/S0717-65382020000200093","url":null,"abstract":"The concepts of life cycle and life history are widely used in ecology and evolution, but there is no formal definition of both concepts. In this assessment the concepts used in the literature in hierarchical terms are reviewed. The main problems detected were associated with the object of the definition (individuals versus organisms) and the hierarchy (individuals, populations, species). Additionally, problems were detected in the use of both concepts associated with erroneous translations from the texts from English to Spanish. It is suggested the use of the concepts of life cycle and life history of Lincoln et al. 1998: “Life cycle is the sequence of events from the origin as a zygote, until the death of an individual”; “Significant characteristics of the life cycle through which an organism passes, with particular reference to the strategies that influence survival and reproduction.” Finally, it is important not to confuse both concepts, not treat them as synonyms, and their use from a hierarchical perspective, therefore, must be explicit if referring to individuals, populations, species or other evolutionary lineage of interest.","PeriodicalId":55128,"journal":{"name":"GAYANA","volume":null,"pages":null},"PeriodicalIF":0.1,"publicationDate":"2020-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49532215","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Actualización de la distribución y redescripción de Entomochilus nitens Kulzer, 1956 (Coleoptera: Tenebrionidae: Physogasterini) 1956年Nitens-Kulzer昆虫背包虫分布和重新描述的更新（鞘翅目：拟步甲科：Physogasterini）
IF 0.1 4区 生物学
GAYANA Pub Date : 2020-12-31 DOI: 10.4067/S0717-65382020000200152
Marcos A. Ferrú, M. Gamboa
{"title":"Actualización de la distribución y redescripción de Entomochilus nitens Kulzer, 1956 (Coleoptera: Tenebrionidae: Physogasterini)","authors":"Marcos A. Ferrú, M. Gamboa","doi":"10.4067/S0717-65382020000200152","DOIUrl":"https://doi.org/10.4067/S0717-65382020000200152","url":null,"abstract":"Entomochilus nitens Kulzer, 1956 (Tenebrionidae: Physogasterini) is a beetle species that has a vague morphological description and few geographical records. We redescribe this specie, detailing the male genitalia, character unknown until now. We give new locaties for northern Chile, and here we indicate this specie for Peru for the first time.","PeriodicalId":55128,"journal":{"name":"GAYANA","volume":null,"pages":null},"PeriodicalIF":0.1,"publicationDate":"2020-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43215943","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Post-dispersal seed predation in the hedgerows of agroecosystems in southern Chile 智利南部农业生态系统树篱中分散后的种子捕食
IF 0.1 4区 生物学
GAYANA Pub Date : 2020-12-31 DOI: 10.4067/S0717-65382020000200112
Alberto G. Gantz, Carlos E. Valdivia
{"title":"Post-dispersal seed predation in the hedgerows of agroecosystems in southern Chile","authors":"Alberto G. Gantz, Carlos E. Valdivia","doi":"10.4067/S0717-65382020000200112","DOIUrl":"https://doi.org/10.4067/S0717-65382020000200112","url":null,"abstract":"Agricultural ecosystems host a large variety of organisms that can contribute to weed control through seed consumption. However, seed consumption rates in the agroecosystems of southern Chile are virtually unknown. We experimentally evaluate oat seed consumption by birds, rodents and invertebrates, in hedgerows dominated by trees, shrubs and grasses. Seed biomass consumed was not affected by the dominant vegetation present in the hedgerows, but did vary according to the seed consuming animal group. The principal seed consumers were rodents, followed by invertebrates and birds, the latter only appearing to be significant in shrub-dominated habitats. In addition, we observed the exotic slug Deroceras reticulatum consuming seeds in 62% of the experimental stations. Additional studies addressing the spatial-temporal dynamics of interactions between granivores and weed seeds are required to confirm the potential controlling and regulating function of rodents on weeds in the agricultural ecosystems of southern Chile.","PeriodicalId":55128,"journal":{"name":"GAYANA","volume":null,"pages":null},"PeriodicalIF":0.1,"publicationDate":"2020-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46261825","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Barreras geográficas: ¿Intervienen en la composición y distribución longitudinal en la comunidad íctica de un río? 地理障碍：它们是否参与河流周期性社区的组成和纵向分布？
IF 0.1 4区 生物学
GAYANA Pub Date : 2020-12-31 DOI: 10.4067/S0717-65382020000200129
Sam Catchpole, V. Rojas, Marisela Medina, V. Ruiz
{"title":"Barreras geográficas: ¿Intervienen en la composición y distribución longitudinal en la comunidad íctica de un río?","authors":"Sam Catchpole, V. Rojas, Marisela Medina, V. Ruiz","doi":"10.4067/S0717-65382020000200129","DOIUrl":"https://doi.org/10.4067/S0717-65382020000200129","url":null,"abstract":"Several variables are involved in the patterns of distribution and spatio-temporal occupation of fish in a fluvial system. In this study, we evaluate numerous geographic (cascades, waterfalls and riffles) and physicochemical variables (slope, current velocity, pH, conductivity and dissolved oxygen) in different sections of the Quiman River, and its relationship with fish assemblage. This river is a mountain stream and presents an abrupt orography with various waterfalls, cascades and riffles that affect the connectivity of the river. Therefore, the working hypothesis was to establish if some of these geography and physicochemical variables can influence the spatial segregation of fish in the river. The results showed a significant variation (ANOSIM r = 0.6 p = 0.0006) in the composition of the assemblage along the river, defining a spatial segregation for native species, and a preferential habitat use was established by native species due to low current velocity environments (< 0.64 m s-1) and slope less than 3.5%. Nevertheless, a BEST/BIOENV analysis determined a low relationship between environmental variables and fish assemblage distribution (r = 0.37 p = 0.03). On the other hand, frequency of waterfalls, cascades and riffles decreased in the direction of the flow, in contrast to richness and diversity, even when there is a pisciculture and treatment plant of wastewater in the terminal section. It is suggested to develop more specific studies to understand the influence of geographic variables on native fish populations.","PeriodicalId":55128,"journal":{"name":"GAYANA","volume":null,"pages":null},"PeriodicalIF":0.1,"publicationDate":"2020-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44048797","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Estado de las poblaciones del Rayador (Rynchops niger) en Chile 智利Rayador (Rynchops niger)的种群状况
IF 0.1 4区 生物学
GAYANA Pub Date : 2020-12-31 DOI: 10.4067/S0717-65382020000200144
Roberto F . Thomson, M. A. Vukasovic, Cristián F. Estades
{"title":"Estado de las poblaciones del Rayador (Rynchops niger) en Chile","authors":"Roberto F . Thomson, M. A. Vukasovic, Cristián F. Estades","doi":"10.4067/S0717-65382020000200144","DOIUrl":"https://doi.org/10.4067/S0717-65382020000200144","url":null,"abstract":"Black skimmers (Rynchops niger) visit the coast of Chile during the Southern summer, being observed in flocks of different sizes, mainly in coastal wetlands. Through the joint use of a database of citizen science observations together with our long-term monitoring, we estimate that the population size for the species in Chile reaches 10,227 individuals. Three sites congregate more than 50% of the population, these sites are the estuaries of Mataquito and Itata river, and Tubul. The analysis of the relative abundance throughout the year for four geographic macrozones would reflect the movement of the species on the coasts of Chile. The Northern zone shows an abundance peak in November with the arrival of individuals, yet its return strategy keeps not being so clear. The Central-North and Central zones of the country show two peaks in the arrival and departure of individuals, suggesting a rather transit use. The existence of a single peak in February, in addition to the highest concentrations of individuals, would indicate that the Central-Southern and Southern areas of the country would potentially be the destination for a large part of the population of black skimmers. The radiotelemetry monitoring of individuals allowed the detection of movement of individuals between a network of coastal wetlands. These displacements would occur frequently throughout the season and both north and southbound. This study provides relevant information for the status of the species in Chile, a country that is habitat for a potentially significant proportion of the cinerascens subspecies during the non-breeding period.","PeriodicalId":55128,"journal":{"name":"GAYANA","volume":null,"pages":null},"PeriodicalIF":0.1,"publicationDate":"2020-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43421664","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Primer reporte de forrajeo sobre el chanchito de mar (Emerita analoga) por perros (Canis lupus familiaris) en la costa de Valdivia, Chile 在智利瓦尔迪维亚海岸，狗(Canis lupus familiaris)对海雀(Emerita analoga)的第一份觅食报告
IF 0.1 4区 生物学
GAYANA Pub Date : 2020-12-31 DOI: 10.4067/S0717-65382020000200158
S. Rodríguez, K. Burgos, B. Gutiérrez, Valentina Escares, James E. Byers
{"title":"Primer reporte de forrajeo sobre el chanchito de mar (Emerita analoga) por perros (Canis lupus familiaris) en la costa de Valdivia, Chile","authors":"S. Rodríguez, K. Burgos, B. Gutiérrez, Valentina Escares, James E. Byers","doi":"10.4067/S0717-65382020000200158","DOIUrl":"https://doi.org/10.4067/S0717-65382020000200158","url":null,"abstract":"Domestic dogs are reported foraging on molecrabs Emerita analoga on Curinanco beach, Valdivia, Chile. Preying on these crabs represents a potential health risk for the dogs, because E. analoga is the intermediate host of larvae of the acanthocephalan Profilicollis altmani, which uses shorebirds as definitive hosts, but also have been documented to parasitize marine and terrestrial mammals including humans. Finally, the dogs not only disrupt birds’ foraging, but now also compete for the same resource.","PeriodicalId":55128,"journal":{"name":"GAYANA","volume":null,"pages":null},"PeriodicalIF":0.1,"publicationDate":"2020-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44584457","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Distribución, densidad y nicho isotópico en reptiles y mamíferos del desierto absoluto de Atacama; con registro de saurofagia entre reptiles 阿塔卡马沙漠爬行动物和哺乳动物的分布、密度和同位素生态位;爬行动物中蜥脚类动物的记录
IF 0.1 4区 生物学
GAYANA Pub Date : 2020-12-31 DOI: 10.4067/S0717-65382020000200118
G. Lobos, Gianina Tapia, Alejandra Alzamora, O. Rojas
{"title":"Distribución, densidad y nicho isotópico en reptiles y mamíferos del desierto absoluto de Atacama; con registro de saurofagia entre reptiles","authors":"G. Lobos, Gianina Tapia, Alejandra Alzamora, O. Rojas","doi":"10.4067/S0717-65382020000200118","DOIUrl":"https://doi.org/10.4067/S0717-65382020000200118","url":null,"abstract":"The hyperarid Atacama Desert, without vegetation, extends for 740 km N to S in Chile. The presence of vertebrates with low mobility in this environment indicates the development of special adaptive capacities and the presence of little-explored ecosystem interrelations. We studied the distribution and density of reptiles and mammals in two altitude gradients of 76 km each. On the other hand, we use a stable isotopes analysis for characterization of the trophic niche in reptiles. We found that the reptiles and mammals are infrequent and have low densities. The silverfish of the Zygentoma order are key prey in this community. Reptiles overlap in the consumption of trophic sources, but differ in their positions in the trophic web. The information is complemented with information about predation among reptiles in this extreme ecosystem.","PeriodicalId":55128,"journal":{"name":"GAYANA","volume":null,"pages":null},"PeriodicalIF":0.1,"publicationDate":"2020-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45057620","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
PROF. MARCO ANTONIO RETAMAL RIVAS Q.D.E.P. (1941 - 2019) Marco Antonio Retamal Rivas教授Q.D.E.P.（1941-2019）
IF 0.1 4区 生物学
GAYANA Pub Date : 2020-12-31 DOI: 10.4067/S0717-65382020000200163
Ramiro Riquelme-Bugueño, Medardo Urbina Burgos
{"title":"PROF. MARCO ANTONIO RETAMAL RIVAS Q.D.E.P. (1941 - 2019)","authors":"Ramiro Riquelme-Bugueño, Medardo Urbina Burgos","doi":"10.4067/S0717-65382020000200163","DOIUrl":"https://doi.org/10.4067/S0717-65382020000200163","url":null,"abstract":"","PeriodicalId":55128,"journal":{"name":"GAYANA","volume":null,"pages":null},"PeriodicalIF":0.1,"publicationDate":"2020-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42363942","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Estado actual del conocimiento de las bioinvasiones marinas en Venezuela: temáticas desarrolladas y tendencia temporal 委内瑞拉海洋生物入侵知识的现状：发展主题和时间趋势
IF 0.1 4区 生物学
GAYANA Pub Date : 2020-06-30 DOI: 10.4067/s0717-65382020000100001
Naily Figueroa López, Antonio Brante
{"title":"Estado actual del conocimiento de las bioinvasiones marinas en Venezuela: temáticas desarrolladas y tendencia temporal","authors":"Naily Figueroa López, Antonio Brante","doi":"10.4067/s0717-65382020000100001","DOIUrl":"https://doi.org/10.4067/s0717-65382020000100001","url":null,"abstract":"Venezuela has one of the richest marine biodiversity areas in the world. Despite the high risk for the introduction of exotic species derived from historically high tourist activity and maritime transportation, the country does not have an updated revision to examine the main advances and gaps of knowledge in regards of biological invasions. This study aims to review the current state of knowledge regarding marine invasions in Venezuela, identifying the main research topics and the spatial and temporal trends. An extensive literature review carried out in multiple scientific databases showed that 35 articles were published between 1998 and 2018. Studies were conducted mainly on the eastern coast of the country. From the 94 species reported as exotic or cryptogenic, only 11 were studied under the context of biological invasions, most of them being first records. Contrary to the trend observed in most parts of the world, the number of studies decreased in the last decade, potentially related to the socio-political situation of the country. The current knowledge on biological invasions in Venezuela is pour. This important lack of information limits progress regarding prevention plans and increases risk for biosecurity and marine conservation of the country.","PeriodicalId":55128,"journal":{"name":"GAYANA","volume":null,"pages":null},"PeriodicalIF":0.1,"publicationDate":"2020-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48003611","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
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