Neotropical Hydrobiology and Aquatic Conservation最新文献

Rivulids (Rivulidae: Cyprinodontiformes) of Bolivia: knowledge status and updated inventory 玻利维亚的鳟鱼（鳟鱼科：鲤形目）：知识状况和最新清单

Neotropical Hydrobiology and Aquatic Conservation Pub Date : 2023-12-31 DOI: 10.55565/nhac.zlmk9566

Heinz Arno Drawert

引用次数: 0

Fish habitat use in the Upper Beni mountain streams (Amazon Basin, Bolivia) 上贝尼山脉溪流中鱼类栖息地的利用(玻利维亚亚马逊盆地)

Neotropical Hydrobiology and Aquatic Conservation Pub Date : 2023-06-30 DOI: 10.55565/nhac.ccff5063

S. Barrera

引用次数: 0

Looking for a home in foreign waters: population genetic structure of the introduced Arapaima in Bolivia 在异国水域寻找家园:玻利维亚引进的阿拉帕伊马的种群遗传结构

Neotropical Hydrobiology and Aquatic Conservation Pub Date : 2023-06-07 DOI: 10.55565/nhac.orkl2245

F. Carvajal-Vallejos

{"title":"Looking for a home in foreign waters: population genetic structure of the introduced Arapaima in Bolivia","authors":"F. Carvajal-Vallejos","doi":"10.55565/nhac.orkl2245","DOIUrl":"https://doi.org/10.55565/nhac.orkl2245","url":null,"abstract":"Establishment of invasive aquatic species is increasing globally due to factors related to globalization and accelerated trade between regions. Such invasions and subsequent establishment generally cause ecosystem disturbance with occasional local and/or regional socioeconomic impacts. The paiche (tentatively identified as Arapaima gigas), one of the largest fish in the Amazon, was introduced into Bolivia via Peru in the 1960s and has generated significant changes in Amazonian fisheries. In recent years, it has been proposed that the genus Arapaima is composed of different species distributed along the Amazon Basin. The present study evaluated the genetic variability of the paiche in the Bolivian Amazon Basin (sub-basins of the Orthon, Madre de Dios and Beni rivers) using nuclear (nDNA- microsatellites) and mitochondrial (mtDNA NADH and CO1) genetic markers to determine species identity and population structure. Microsatellite DNA analysis suggested that the three populations corresponding to geographic sub-basins are genetically distinct. The genetic distance between populations was not significantly related to the geographic distance between collection sites. We suggest that the founder population in Bolivia was composed of a limited number of individuals that subsequently dispersed in search of environmental conditions similar as those habitats from which they were extracted. Planning for the sustainable use of the species by fisheries should consider the existence of different populations in the Bolivian sub- basins. Recruitment seems to depend on exchanges between nearby surrounding aquatic habitats rather than between sub-basins.","PeriodicalId":231023,"journal":{"name":"Neotropical Hydrobiology and Aquatic Conservation","volume":"182 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122758364","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Fisheries of the scavenger species Calophysus macropterus: a case study in the Bolivian Amazon 食腐鱼类大鳍鱼的渔业:玻利维亚亚马逊河的个案研究

Neotropical Hydrobiology and Aquatic Conservation Pub Date : 2023-06-01 DOI: 10.55565/nhac.khgu2735

P. V. Van Damme

{"title":"Fisheries of the scavenger species Calophysus macropterus: a case study in the Bolivian Amazon","authors":"P. V. Van Damme","doi":"10.55565/nhac.khgu2735","DOIUrl":"https://doi.org/10.55565/nhac.khgu2735","url":null,"abstract":"Bolivian Amazon small-scale fisheries traditionally focus on large migratory fish species. However, in the last decade there has been a trend of increased landings of low-value medium-sized migratory species, such as blanquillo, Calophysus macropterus. This scavenger species is captured using chicken and bovine waste as bait, and occasionally carcasses from wild species. This study explores the boom of this specialized fishery in Puerto Villarroel, a small harbor on the Ichilo River, using a combination of historical landing data, fisheries statistics obtained by participatory fisheries monitoring, fish market studies and interviews with local key stakeholders. Additionally, mercury contamination of fish meat was evaluated. Blanquillo fishing started in 2008 and boomed around 2015, representing 30% of landings, after which it decreased to fluctuate around 15%. The capture and landing data suggest that this species is mainly captured by non- organized fishers. The market studies conducted between 2015 and 2018 in Cochabamba city and in lowland middle towns showed that on average more than 20% of consumption of Amazon river fish consisted of blanquillo meat. Mercury is accumulated in the muscle tissue at concentrations near the official limit established by WHO for human consumption, whereas in 15% of fish the concentrations exceeded this limit. The paper pieces together the evolution of the blanquillo fishery in Bolivia, and looks at different aspects, including the diversity of fishers involved, possible impacts on other vulnerable species and public health, and potential impacts and effectiveness of different public policy approaches. In conclusion, the present study shows there is an overall need for more consistent and inclusive fisheries regulations in the Bolivian Amazon, as a way to protect aquatic fauna, avoid environmental contamination and secure human health.","PeriodicalId":231023,"journal":{"name":"Neotropical Hydrobiology and Aquatic Conservation","volume":"111 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127119014","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Nuevos registros por científicos ciudadanos de Acanthicus hystrix Agassiz, 1829 (Siluriformes: Loricariidae) en la Amazonia ecuatoriana 1829年厄瓜多尔亚马逊地区公民科学家的新记录(Siluriformes: Loricariidae)

Neotropical Hydrobiology and Aquatic Conservation Pub Date : 2023-06-01 DOI: 10.55565/nhac.rqco6867

Fernando Anaguano Yancha

引用次数: 0

Estado poblacional de caimanes (Alligatoridae) en nueve Tierras Comunitarias de Origen del Beni, Bolivia 玻利维亚贝尼9个社区起源地区凯门鳄(短吻鳄科)的种群状况

Neotropical Hydrobiology and Aquatic Conservation Pub Date : 2023-03-01 DOI: 10.55565/nhac.iouf3417

Luis Rolando Rivas

{"title":"Estado poblacional de caimanes (Alligatoridae) en nueve Tierras Comunitarias de Origen del Beni, Bolivia","authors":"Luis Rolando Rivas","doi":"10.55565/nhac.iouf3417","DOIUrl":"https://doi.org/10.55565/nhac.iouf3417","url":null,"abstract":"Las poblaciones del lagarto (Caiman yacare) en el territorio boliviano están siendo aprovechados por los pueblos indígenas de tierras bajas en el marco del Programa Nacional de Conservación y Aprovechamiento Sostenible del Lagarto. Al inicio del Programa, el lagarto fue aprovechado por su piel y, luego de la caída del mercado del cuero, por su carne, beneficiando a numerosas comunidades de las Tierras Comunitarias de Origen de los departamentos del Beni, Santa Cruz y La Paz. En el marco de la actualización de los planes de manejo del lagarto, se evaluaron las poblaciones post-cosecha, y también las del caimán negro (Melanosuchus niger) y del cocodrilo (Paleosuchus palpebrosus). Son especies simpátricas en los ecosistemas acuáticos de las áreas de uso tradicional de recursos en nueve Tierras Comunitarias de Origen en el departamento del Beni. Para evaluar las poblaciones de caimanes, se utilizó el método Detección Visual Nocturna o conteo nocturno en cinco tipos de ambientes acuáticos (lagunas tectónicas, lagunas meándricas, lagunetas, ríos y arroyos). Se evaluaron aproximadamente 1 507 km de orilla de ambientes acuáticos y se contabilizaron 53 551 lagartos (94.64%), 3 019 caimanes negros (5.33%) y 15 cocodrilos (0.03%). La abundancia relativa del lagarto muestra grandes variaciones de un cuerpo de agua a otro y en muchos de ellos el lagarto comparte espacio con el caimán negro. En general, las estructuras poblacionales están dominadas por ejemplares juveniles (clase II), como es lo típicamente observado en poblaciones sometidas a cosecha comercial. Basado en el análisis de los datos presentados se concluye que las poblaciones del lagarto en el área de estudio tienen potencial para ser aprovechadas sosteniblemente. Un conjunto de factores externos, como son la demanda en mercados y el precio de compra, puede influenciar en la decisión de efectivamente realizar el aprovechamiento.","PeriodicalId":231023,"journal":{"name":"Neotropical Hydrobiology and Aquatic Conservation","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133962792","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Nutritional properties of spectacled caiman (Caiman yacare) meat marketed as part of a wildlife management strategy in the Beni river basin 在贝尼河流域作为野生动物管理战略的一部分销售的眼镜凯门鳄(凯门鳄)肉的营养特性

Neotropical Hydrobiology and Aquatic Conservation Pub Date : 2022-12-22 DOI: 10.55565/nhac.yibr9149

Alvarez Guido

引用次数: 0

Ictiofauna del río Iruyañez, cuenca del río Mamore, Amazonía Boliviana

Neotropical Hydrobiology and Aquatic Conservation Pub Date : 2022-12-22 DOI: 10.55565/nhac.rlgl3979

Reinaldo Cholima

引用次数: 0

Conquiliometría del gasterópodo Melanoides tuberculata (Müller, 1774) (Gastropoda, Thiaridae) en la costa Norte-Noreste de Brasil 巴西东北海岸黑腹足类黑腹足类(muller, 1774)(腹足类，Thiaridae)的海螺测量

Neotropical Hydrobiology and Aquatic Conservation Pub Date : 2022-12-21 DOI: 10.55565/nhac.gijw7517

Weverton John Pinheiro dos Santos

引用次数: 0

Ichthyofauna of the megadiverse Madidi National Park in the Bolivian Andean Amazon 玻利维亚安第斯亚马逊山脉的马迪迪国家公园里的鱼类

Neotropical Hydrobiology and Aquatic Conservation Pub Date : 2022-12-21 DOI: 10.55565/nhac.gcja3363

G. Miranda-Chumacero

{"title":"Ichthyofauna of the megadiverse Madidi National Park in the Bolivian Andean Amazon","authors":"G. Miranda-Chumacero","doi":"10.55565/nhac.gcja3363","DOIUrl":"https://doi.org/10.55565/nhac.gcja3363","url":null,"abstract":"This study presents the results of a compilation of the existing fish records for the Madidi National Park and Natural Area for Integrated Management (PNANMI Madidi), as well as extensive ichthyological sampling by the Identidad Madidi expedition, and species identified in ichthyoplankton by the metabarcoding approach. The current list has a total of 333 species for the protected area, across 43 families and within 13 orders. The list also includes 35 new candidate species still to be described. The highest number of species is found within the order Characiformes (139 species; 41.7%), followed by Siluriformes (137 species; 41.1%), and Cichliformes (19 species; 5.7%), which together represent 88.6% of total species richness. The remaining species (11.4%) are distributed across another 10 orders. The families with the highest number of species are Characidae (73 species; 21.9%), Loricariidae (36; 10.8%), Heptapteridae (21; 6.3%), Pimelodidae (21; 6.3%), and Cichlidae (19; 5.7%). The list of 333 species presented here doubles the previously known ichthyofauna (161 species) in the PNANMI Madidi. The area covers 1.3% of the Madeira basin, but conserves 25% of the","PeriodicalId":231023,"journal":{"name":"Neotropical Hydrobiology and Aquatic Conservation","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116905015","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1