Pub Date : 2022-04-07DOI: 10.1080/23766808.2022.2049172
F. Gómez, A. Valenzuela, Juan Carlos Acosta
Resumen La microftalmia y anoftalmia es una enfermedad que afecta el desarrollo normal de los globos oculares en animales que la padecen. Genera pérdida total o parcial de los mismos y raramente se observa en peces de sistemas naturales. En este trabajo se documenta por primera vez la patología en peces nativos de la especie Diplomystes cuyanus capturados en un río de montaña de la provincia de San Juan- en el oeste árido de Argentina.
{"title":"Anoftalmia y microftalmia unilateral en Diplomystes cuyanus “bagre Otuno” en el centro-oeste de Argentina","authors":"F. Gómez, A. Valenzuela, Juan Carlos Acosta","doi":"10.1080/23766808.2022.2049172","DOIUrl":"https://doi.org/10.1080/23766808.2022.2049172","url":null,"abstract":"Resumen La microftalmia y anoftalmia es una enfermedad que afecta el desarrollo normal de los globos oculares en animales que la padecen. Genera pérdida total o parcial de los mismos y raramente se observa en peces de sistemas naturales. En este trabajo se documenta por primera vez la patología en peces nativos de la especie Diplomystes cuyanus capturados en un río de montaña de la provincia de San Juan- en el oeste árido de Argentina.","PeriodicalId":36863,"journal":{"name":"Neotropical Biodiversity","volume":"8 1","pages":"147 - 150"},"PeriodicalIF":0.9,"publicationDate":"2022-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44330406","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}
Pub Date : 2022-03-28DOI: 10.1080/23766808.2022.2031562
Gabriel A. Brito Vera, Jaime A. Salas, G. Heimpel, M. Bulgarella
ABSTRACT The nest structure of two species of small mammals, Marmosa simonsi and Rhipidomys latimanus were recorded for the first time. Nests were found inside artificial nest boxes in a tropical dry forest remnant ecosystem in Western Ecuador. We described the nests and categorized them as rearing nest, permanent resting nest and transient refuge, depending on their intended use. Artificial nest boxes provide an optimal place for pup rearing and resting for these small mammals. These nest sites can be useful for ecological studies of behavior and habits of elusive, poorly-known mammalian species. Graphical abstract
{"title":"Use of artificial nest boxes by two species of small, arboreal mammals in ecuadorian tropical dry forest","authors":"Gabriel A. Brito Vera, Jaime A. Salas, G. Heimpel, M. Bulgarella","doi":"10.1080/23766808.2022.2031562","DOIUrl":"https://doi.org/10.1080/23766808.2022.2031562","url":null,"abstract":"ABSTRACT The nest structure of two species of small mammals, Marmosa simonsi and Rhipidomys latimanus were recorded for the first time. Nests were found inside artificial nest boxes in a tropical dry forest remnant ecosystem in Western Ecuador. We described the nests and categorized them as rearing nest, permanent resting nest and transient refuge, depending on their intended use. Artificial nest boxes provide an optimal place for pup rearing and resting for these small mammals. These nest sites can be useful for ecological studies of behavior and habits of elusive, poorly-known mammalian species. Graphical abstract","PeriodicalId":36863,"journal":{"name":"Neotropical Biodiversity","volume":"8 1","pages":"108 - 111"},"PeriodicalIF":0.9,"publicationDate":"2022-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43310137","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}
Pub Date : 2022-03-22DOI: 10.1080/23766808.2022.2049178
Bárbara Suárez, Margenny Barrios, F. Teixeira de Mello
ABSTRACT The use of macroinvertebrates as indicators of water quality is an effective and low-cost tool, which is widely implemented in biomonitoring programmes. Certain taxa are characteristic of impaired watercourses (e.g. Oligochaeta, Chironomidae and Amphipoda), while others are characteristic of good-quality watercourses (e.g. Ephemeroptera, Plecoptera and Trichoptera; EPT). In this work, we evaluated the response of the macroinvertebrate assemblages to different land uses. For this purpose, artificial substrate colonization experiments were conducted in streams including urban (U, n = 3), intensive agriculture and dairy production (AD, n = 4) and extensive cattle ranching (CR, n = 4) land uses. Because in Uruguay pristine ecosystems are practically non-existent and streams of low order streams associated with extensive cattle production represent the lowest deterioration water quality condition, CR sites were used as control reference streams. Physicochemical water parameters were measured. For macroinvertebrate sampling, 10 artificial substrates were installed in each stream. A total of 110 artificial substrates were analysed. Each sample/site consisted of a plastic mesh bag of 1.2 cm opening, which were filled with 160 cm3 (including 73.3 ± 5.8 cm3 interstitial water) of stones sieved between 1.3 and 1.5 cm. During the summer of 2018 (February), devices were left in streams for 15 days for communities to colonize them. U and AD land use represented the stressors with the highest impact on the attributes and composition of the macroinvertebrate communities. Abundance of EPT was higher in CR, meanwhile Caenogastropoda dominated in AD, and Amphipoda in U sites. Macroinvertebrate groups to order level classification were able to effectively discriminate between different land uses. The use of artificial substrate also demonstrated to be efficient method for monitoring macroinvertebrate community. We did not find a correlation between the physicochemical water parameters and the macroinvertebrate community. In this context, we propose a rapid and cost-effective biomonitoring approach, capable of estimating the degree of impact of different land uses.
{"title":"Macroinvertebrates’ response to different land use in lowland streams from Uruguay: use of artificial substrates for biomonitoring","authors":"Bárbara Suárez, Margenny Barrios, F. Teixeira de Mello","doi":"10.1080/23766808.2022.2049178","DOIUrl":"https://doi.org/10.1080/23766808.2022.2049178","url":null,"abstract":"ABSTRACT The use of macroinvertebrates as indicators of water quality is an effective and low-cost tool, which is widely implemented in biomonitoring programmes. Certain taxa are characteristic of impaired watercourses (e.g. Oligochaeta, Chironomidae and Amphipoda), while others are characteristic of good-quality watercourses (e.g. Ephemeroptera, Plecoptera and Trichoptera; EPT). In this work, we evaluated the response of the macroinvertebrate assemblages to different land uses. For this purpose, artificial substrate colonization experiments were conducted in streams including urban (U, n = 3), intensive agriculture and dairy production (AD, n = 4) and extensive cattle ranching (CR, n = 4) land uses. Because in Uruguay pristine ecosystems are practically non-existent and streams of low order streams associated with extensive cattle production represent the lowest deterioration water quality condition, CR sites were used as control reference streams. Physicochemical water parameters were measured. For macroinvertebrate sampling, 10 artificial substrates were installed in each stream. A total of 110 artificial substrates were analysed. Each sample/site consisted of a plastic mesh bag of 1.2 cm opening, which were filled with 160 cm3 (including 73.3 ± 5.8 cm3 interstitial water) of stones sieved between 1.3 and 1.5 cm. During the summer of 2018 (February), devices were left in streams for 15 days for communities to colonize them. U and AD land use represented the stressors with the highest impact on the attributes and composition of the macroinvertebrate communities. Abundance of EPT was higher in CR, meanwhile Caenogastropoda dominated in AD, and Amphipoda in U sites. Macroinvertebrate groups to order level classification were able to effectively discriminate between different land uses. The use of artificial substrate also demonstrated to be efficient method for monitoring macroinvertebrate community. We did not find a correlation between the physicochemical water parameters and the macroinvertebrate community. In this context, we propose a rapid and cost-effective biomonitoring approach, capable of estimating the degree of impact of different land uses.","PeriodicalId":36863,"journal":{"name":"Neotropical Biodiversity","volume":"8 1","pages":"136 - 146"},"PeriodicalIF":0.9,"publicationDate":"2022-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47622018","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}
Pub Date : 2022-03-20DOI: 10.1080/23766808.2022.2049173
Carlos Velásquez, Erich Rudolph, A. Oyanedel, Yeriko Alanís, Luis A. Henríquez-Antipa
ABSTRACT Parastacus pugnax is an endemic burrowing crayfish from the basins of the Mediterranean and Temperate Wet regions of Chile. For the first time, specimens were found incidentally in the Semiarid Region of Chile (Choapa River Basin). In these regions, hydrological changes derived from global warming and the intensive use of water for irrigation have resulted in highly fragmented habitats, where the effects of the dry season are exacerbated by periods of permanent drought. Unfortunately, in the Semiarid Region there are not regulatory measures for the conservation of the native biota. The aims of this study were to determine the spatial distribution patterns of P. pugnax in the Choapa River Basin (⁓31°S) to expand and contribute with updated knowledge about the distribution and natural history of this species highlighting local environmental management issues. Seasonal occurrence surveys were carried out at eight sites stratified by elevation in the lower, middle, and upper zones of this basin. This was complemented by semi-structured interviews within local prawn´s fisher. Parastacus pugnax was distributed across ⁓25 km in the lower and middle zone of the basin, and it is present in lentic and lotic environments. The occurrence of this excavator species in lotic environments is somehow unusual according to its ecology, which suggests that it is a primary facultative excavator, so a re-evaluation of its current ecological category (category 1; primary excavator) is necessary. According to the interviewees, P. pugnax corresponds to a naturalized species introduced by humans ⁓25–30 years ago for artisanal aquaculture in ponds. The wide altitudinal distribution of P. pugnax in the Choapa River Basin indicates the need to re-evaluate its distribution limits, which traditionally placed the Parastacidae family to the south of Aconcagua River Basin (⁓33°S). To understand the origin of the species in the Choapa River Basin, is clue to specify the phylogenetic structure and determinate whether the presence in the Semiarid Region is constrained to the Choapa River Basin or extends to other basins within this region.
{"title":"The burrowing crayfish Parastacus pugnax (Decapoda: Parastacidae) in the Semiarid Region of Chile: findings of a naturalized or threatened population?","authors":"Carlos Velásquez, Erich Rudolph, A. Oyanedel, Yeriko Alanís, Luis A. Henríquez-Antipa","doi":"10.1080/23766808.2022.2049173","DOIUrl":"https://doi.org/10.1080/23766808.2022.2049173","url":null,"abstract":"ABSTRACT Parastacus pugnax is an endemic burrowing crayfish from the basins of the Mediterranean and Temperate Wet regions of Chile. For the first time, specimens were found incidentally in the Semiarid Region of Chile (Choapa River Basin). In these regions, hydrological changes derived from global warming and the intensive use of water for irrigation have resulted in highly fragmented habitats, where the effects of the dry season are exacerbated by periods of permanent drought. Unfortunately, in the Semiarid Region there are not regulatory measures for the conservation of the native biota. The aims of this study were to determine the spatial distribution patterns of P. pugnax in the Choapa River Basin (⁓31°S) to expand and contribute with updated knowledge about the distribution and natural history of this species highlighting local environmental management issues. Seasonal occurrence surveys were carried out at eight sites stratified by elevation in the lower, middle, and upper zones of this basin. This was complemented by semi-structured interviews within local prawn´s fisher. Parastacus pugnax was distributed across ⁓25 km in the lower and middle zone of the basin, and it is present in lentic and lotic environments. The occurrence of this excavator species in lotic environments is somehow unusual according to its ecology, which suggests that it is a primary facultative excavator, so a re-evaluation of its current ecological category (category 1; primary excavator) is necessary. According to the interviewees, P. pugnax corresponds to a naturalized species introduced by humans ⁓25–30 years ago for artisanal aquaculture in ponds. The wide altitudinal distribution of P. pugnax in the Choapa River Basin indicates the need to re-evaluate its distribution limits, which traditionally placed the Parastacidae family to the south of Aconcagua River Basin (⁓33°S). To understand the origin of the species in the Choapa River Basin, is clue to specify the phylogenetic structure and determinate whether the presence in the Semiarid Region is constrained to the Choapa River Basin or extends to other basins within this region.","PeriodicalId":36863,"journal":{"name":"Neotropical Biodiversity","volume":"8 1","pages":"124 - 130"},"PeriodicalIF":0.9,"publicationDate":"2022-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43358657","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}
Pub Date : 2022-03-16DOI: 10.1080/23766808.2022.2049171
L. F. Carmo, Manuella Folly, L. R. Malagoli
ABSTRACT The Brazilian Atlantic Forest (BAF) is hotspot for conservation priorities due to the high concentration and maintenance of biodiversity, comprising more than 600 species of amphibians, of which 88% are endemic to this biome. Many of these species are under some level of threat, especially those with restricted distributions to mountainous regions. Hylodes is the most speciose genus within Hylodidae, housing 26 recognized species of the diurnal frogs related to streams of forest massifs in the BAF. Hylodes pipilans is endemic to the state of Rio de Janeiro, considered restricted to the Serra do Órgãos mountains. Here, we updated its records based on fieldwork, bioacoustics analysis, and museum data, enhancing the species distribution comprehension. Additionally, we evaluate its occurrence inside of protected areas, updating information to subsidize conservation actions for this poorly known Torrent frog. We recorded individuals of H. pipilans in Parque Nacional da Serra dos Órgãos and Reserva Biológica do Tinguá. The vocalizations analyzed were compatible with the bioacoustics traits of H. pipilans. Its distribution covers part of six municipalities in the Serra dos Órgãos Mountain range, northern portion of Serra do Mar, between 245 and 814 meters above sea level. The new record to the Reserva Biológica do Tinguá is the species southernmost record. Despite the previous assessment on the conservation status of H. pipilans suggest as a least concern species, little is known about its occurrence extension, occupancy area, population trends, and ecological information. Thus, the present study is particularly important to enhance the understanding of altitudinal and geographic distribution range for H. pipilans. These will assist in the species conservation status reassessment.
巴西大西洋森林(BAF)由于其高度集中和维持的生物多样性而成为保护重点的热点，其中包括600多种两栖动物，其中88%是该生物群系的特有物种。这些物种中的许多都受到一定程度的威胁，特别是那些分布在山区的物种。Hylodes是Hylodidae中种类最多的属，在BAF与森林块体溪流有关的昼行蛙中已知有26种。水螅是巴西里约热内卢州特有的，被认为仅限于塞拉·多Órgãos山脉。在野外调查、生物声学分析和博物馆资料的基础上，对其记录进行了更新，提高了对其物种分布的认识。此外，我们还评估了其在保护区内的发生情况，更新信息以资助对这种鲜为人知的激流蛙的保护行动。我们在Serra dos国家公园Órgãos和Biológica do tingu保留地记录了H. pipilans个体。所分析的发声特征与毛毛猴的生物声学特征相符。它的分布覆盖了Serra dos Órgãos山脉的六个直辖市的一部分，Serra do Mar的北部，海拔245到814米之间。新记录到保护区Biológica do tingu是物种最南端的记录。尽管以往对毛毛猴的保护状况评价表明其是最不受关注的物种，但对其发生范围、占用面积、种群趋势和生态信息了解甚少。因此，本研究对加强对毛毛人的海拔分布和地理分布范围的认识尤为重要。这些将有助于物种保护状况的重新评估。
{"title":"An update of the geographical distribution of Hylodes pipilans (Canedo & Pombal, 2007), an endemic Torrent frog of the Brazilian Atlantic Forest, with comments on its conservation","authors":"L. F. Carmo, Manuella Folly, L. R. Malagoli","doi":"10.1080/23766808.2022.2049171","DOIUrl":"https://doi.org/10.1080/23766808.2022.2049171","url":null,"abstract":"ABSTRACT The Brazilian Atlantic Forest (BAF) is hotspot for conservation priorities due to the high concentration and maintenance of biodiversity, comprising more than 600 species of amphibians, of which 88% are endemic to this biome. Many of these species are under some level of threat, especially those with restricted distributions to mountainous regions. Hylodes is the most speciose genus within Hylodidae, housing 26 recognized species of the diurnal frogs related to streams of forest massifs in the BAF. Hylodes pipilans is endemic to the state of Rio de Janeiro, considered restricted to the Serra do Órgãos mountains. Here, we updated its records based on fieldwork, bioacoustics analysis, and museum data, enhancing the species distribution comprehension. Additionally, we evaluate its occurrence inside of protected areas, updating information to subsidize conservation actions for this poorly known Torrent frog. We recorded individuals of H. pipilans in Parque Nacional da Serra dos Órgãos and Reserva Biológica do Tinguá. The vocalizations analyzed were compatible with the bioacoustics traits of H. pipilans. Its distribution covers part of six municipalities in the Serra dos Órgãos Mountain range, northern portion of Serra do Mar, between 245 and 814 meters above sea level. The new record to the Reserva Biológica do Tinguá is the species southernmost record. Despite the previous assessment on the conservation status of H. pipilans suggest as a least concern species, little is known about its occurrence extension, occupancy area, population trends, and ecological information. Thus, the present study is particularly important to enhance the understanding of altitudinal and geographic distribution range for H. pipilans. These will assist in the species conservation status reassessment.","PeriodicalId":36863,"journal":{"name":"Neotropical Biodiversity","volume":"8 1","pages":"131 - 135"},"PeriodicalIF":0.9,"publicationDate":"2022-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43569974","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}
Pub Date : 2022-03-13DOI: 10.1080/23766808.2022.2029322
Davi Lee Bang, Izadora Vidigal, P. Marinho, A. Giaretta
ABSTRACT Scinax belloni is a small bromeligenous treefrog that lives in the mountainous areas of southeastern Brazil. The call of the species has been previously described, but recently gathered data revealed an unreported acoustic unit that we describe herein. Intraspecific variation within the species call was also updated based on an increased sample size. The call is composed of two types of multipulsed notes: a short note, which is in agreement with the previous description, and a trill note that is emitted in association with the short note. The trill note was likely not reported in the previous description because of the small sample size. Further studies should elucidate the social function of the trill note. Acoustic units somewhat resembling the trill note are shared by a few other Scinax species, but the nomenclatural instability of these calls hamper detailed comparisons. This highlights the need for a standardized and comparative acoustic analysis to elucidate homologous and comparable acoustic units among the bromeligenous Scinax species.
{"title":"Extended vocal repertoire of the bromeligenous treefrog Scinax belloni (Anura:Hylidae)","authors":"Davi Lee Bang, Izadora Vidigal, P. Marinho, A. Giaretta","doi":"10.1080/23766808.2022.2029322","DOIUrl":"https://doi.org/10.1080/23766808.2022.2029322","url":null,"abstract":"ABSTRACT Scinax belloni is a small bromeligenous treefrog that lives in the mountainous areas of southeastern Brazil. The call of the species has been previously described, but recently gathered data revealed an unreported acoustic unit that we describe herein. Intraspecific variation within the species call was also updated based on an increased sample size. The call is composed of two types of multipulsed notes: a short note, which is in agreement with the previous description, and a trill note that is emitted in association with the short note. The trill note was likely not reported in the previous description because of the small sample size. Further studies should elucidate the social function of the trill note. Acoustic units somewhat resembling the trill note are shared by a few other Scinax species, but the nomenclatural instability of these calls hamper detailed comparisons. This highlights the need for a standardized and comparative acoustic analysis to elucidate homologous and comparable acoustic units among the bromeligenous Scinax species.","PeriodicalId":36863,"journal":{"name":"Neotropical Biodiversity","volume":"8 1","pages":"68 - 72"},"PeriodicalIF":0.9,"publicationDate":"2022-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43958988","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}
Pub Date : 2022-03-11DOI: 10.1080/23766808.2022.2043699
Ashley Mariani-Ríos, Norman Maldonado-Benítez, Alonso Ramírez
ABSTRACT Freshwater macroinvertebrates play an important role in maintaining stream food webs. Odonata (dragonflies and damselflies) are important top predators in these communities and serve as indicators of stream health. Our understanding of odonate assemblages is limited in the Caribbean and the natural history of most odonate species in the region remains unknown. The focus of this research is to study the natural history of odonate species in headwater montane streams following major hurricane impacts in Puerto Rico. We monitored assemblages from August 2018 to July 2019 in two headwater streams within El Yunque National Forest, Puerto Rico. The study streams drain a protected forest, with aseasonal precipitation patterns, relatively constant water temperature, and flashy hydrographs that quickly respond to rain events. We sampled 226 adults and 550 larvae, dominated by three Caribbean endemics: Scapanea frontalis, Macrothemis celeno, and Telebasis vulnerata. Only S. frontalis and M. celeno were abundant enough to assess the temporal patterns and their natural history. Larval density fluctuated throughout the year with short peaks in abundance during different times of the year, according to the species. Small individuals (≤10 mm body length) were more abundant than the large ones. However, all size classes were present during the year. The dominant species, S. frontalis and M. celeno, had continuous development patterns, without identifiable size classes and multiple overlapping generations. The exception was the last stadium that formed a separate group in the body length vs head width plots. Species had clear habitat preferences; S. frontalis was abundant in riffles and preferred areas with high amounts of cobble. Macrothemis celeno prefers pool habitats with fine substrates. While we found trends for negative relations between abundance and discharge, canopy cover, water temperature, and rainfall, none was statistically significant. Observed patterns suggest a lack of strong temporal seasonality in the natural history of Odonata, which coincides with the aseasonal environment of streams draining our study area. Overall, our study is the first to assess temporal variability of Odonata assemblages in montane streams of Puerto Rico and provides information on Caribbean endemic species.
{"title":"Natural history of Odonata assemblages in tropical streams in Puerto Rico","authors":"Ashley Mariani-Ríos, Norman Maldonado-Benítez, Alonso Ramírez","doi":"10.1080/23766808.2022.2043699","DOIUrl":"https://doi.org/10.1080/23766808.2022.2043699","url":null,"abstract":"ABSTRACT Freshwater macroinvertebrates play an important role in maintaining stream food webs. Odonata (dragonflies and damselflies) are important top predators in these communities and serve as indicators of stream health. Our understanding of odonate assemblages is limited in the Caribbean and the natural history of most odonate species in the region remains unknown. The focus of this research is to study the natural history of odonate species in headwater montane streams following major hurricane impacts in Puerto Rico. We monitored assemblages from August 2018 to July 2019 in two headwater streams within El Yunque National Forest, Puerto Rico. The study streams drain a protected forest, with aseasonal precipitation patterns, relatively constant water temperature, and flashy hydrographs that quickly respond to rain events. We sampled 226 adults and 550 larvae, dominated by three Caribbean endemics: Scapanea frontalis, Macrothemis celeno, and Telebasis vulnerata. Only S. frontalis and M. celeno were abundant enough to assess the temporal patterns and their natural history. Larval density fluctuated throughout the year with short peaks in abundance during different times of the year, according to the species. Small individuals (≤10 mm body length) were more abundant than the large ones. However, all size classes were present during the year. The dominant species, S. frontalis and M. celeno, had continuous development patterns, without identifiable size classes and multiple overlapping generations. The exception was the last stadium that formed a separate group in the body length vs head width plots. Species had clear habitat preferences; S. frontalis was abundant in riffles and preferred areas with high amounts of cobble. Macrothemis celeno prefers pool habitats with fine substrates. While we found trends for negative relations between abundance and discharge, canopy cover, water temperature, and rainfall, none was statistically significant. Observed patterns suggest a lack of strong temporal seasonality in the natural history of Odonata, which coincides with the aseasonal environment of streams draining our study area. Overall, our study is the first to assess temporal variability of Odonata assemblages in montane streams of Puerto Rico and provides information on Caribbean endemic species.","PeriodicalId":36863,"journal":{"name":"Neotropical Biodiversity","volume":"8 1","pages":"112 - 123"},"PeriodicalIF":0.9,"publicationDate":"2022-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44363133","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}
Pub Date : 2022-02-27DOI: 10.1080/23766808.2022.2029321
D. A. Barrasso, C. Úbeda, Leonardo Cotichelli, N. Basso
ABSTRACT The occurrence of Alsodes coppingeri is confirmed in Argentina for the first time, from Santa Cruz Province, close to the Lago del Desierto. Specimens of this species were identified according to external morphology and DNA sequences. These new records in Argentina are at the same latitude than the type locality (Puerto Río Frío, Chile) about 100 km eastwards in a straight-line, but at the opposite side of the Andes mountain range and the Southern Continental Ice Fields. Five localities from Chile (Caleta Tortel, Canal Michel, Laguna Caiquenes, Puerto Yungay, and Villa O’Higgins) are around 100 km north from our records, in a lower region of the Andes located between the Northern and Southern Continental Ice Fields. This region with discontinuous permanent ice sheet-cover may have acted as a corridor for amphibian species that are currently distributed on both sides of the Andes range.
{"title":"On the presence of Alsodes coppingeri (Anura, Alsodidae) in Argentina, with comments on other southern Alsodes","authors":"D. A. Barrasso, C. Úbeda, Leonardo Cotichelli, N. Basso","doi":"10.1080/23766808.2022.2029321","DOIUrl":"https://doi.org/10.1080/23766808.2022.2029321","url":null,"abstract":"ABSTRACT The occurrence of Alsodes coppingeri is confirmed in Argentina for the first time, from Santa Cruz Province, close to the Lago del Desierto. Specimens of this species were identified according to external morphology and DNA sequences. These new records in Argentina are at the same latitude than the type locality (Puerto Río Frío, Chile) about 100 km eastwards in a straight-line, but at the opposite side of the Andes mountain range and the Southern Continental Ice Fields. Five localities from Chile (Caleta Tortel, Canal Michel, Laguna Caiquenes, Puerto Yungay, and Villa O’Higgins) are around 100 km north from our records, in a lower region of the Andes located between the Northern and Southern Continental Ice Fields. This region with discontinuous permanent ice sheet-cover may have acted as a corridor for amphibian species that are currently distributed on both sides of the Andes range.","PeriodicalId":36863,"journal":{"name":"Neotropical Biodiversity","volume":"8 1","pages":"21 - 30"},"PeriodicalIF":0.9,"publicationDate":"2022-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45970956","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}
Pub Date : 2022-02-24DOI: 10.1080/23766808.2022.2040276
Pastor Coayla-P, André Alexander Cheneaux-D, Claudia Viviana Moreno-S, Cynthia Elizabeth Cruz-R, Eusebio Walter Colque-R, C. Damborenea
ABSTRACT High Andean ponds and reservoirs are among the least-studied environments. We evaluated the composition of littoral macrobenthos and how it is affected by the physicochemical conditions of the water in El Pañe reservoir (Peru), located at 4,550 m.a.s.l. Samples were taken between November 2017 and October 2018 from three zones in the reservoir: low (downstream), middle and high (upstream); two of these zones with fish farms (low and middle) and one zone without fish farms (high). The following physicochemical parameters of the water were measured: dissolved oxygen, conductivity, pH and temperature. The macrobenthic community was analysed through diversity indices such as Shannon-Wiener (H’), Simpson’s dominance index (D), Pielou’s evenness (J’), true diversity (D1), and richness (S). The influence of the physicochemical variables on the macrobenthos was estimated by canonical correspondence analysis (CCA) and non-metric multidimensional scaling (NMDS). Dissolved oxygen was found to have lower values (<0.5 mg/l) than specified in the Environmental Quality Standards (EQS). Macroinvertebrate richness for the whole reservoir was 17 families, and the family with highest relative abundance was Chironomidae (42.24% in the low zone, 51% in the middle zone and 40.43% in the high zone). The indices showed greater species richness in the high zone, where there are no fish farms. Dissolved oxygen and conductivity were the main factors determining macrobenthos distribution and composition.
{"title":"Littoral macrobenthic communities and water quality in El Pañe Reservoir, Arequipa, Peru","authors":"Pastor Coayla-P, André Alexander Cheneaux-D, Claudia Viviana Moreno-S, Cynthia Elizabeth Cruz-R, Eusebio Walter Colque-R, C. Damborenea","doi":"10.1080/23766808.2022.2040276","DOIUrl":"https://doi.org/10.1080/23766808.2022.2040276","url":null,"abstract":"ABSTRACT High Andean ponds and reservoirs are among the least-studied environments. We evaluated the composition of littoral macrobenthos and how it is affected by the physicochemical conditions of the water in El Pañe reservoir (Peru), located at 4,550 m.a.s.l. Samples were taken between November 2017 and October 2018 from three zones in the reservoir: low (downstream), middle and high (upstream); two of these zones with fish farms (low and middle) and one zone without fish farms (high). The following physicochemical parameters of the water were measured: dissolved oxygen, conductivity, pH and temperature. The macrobenthic community was analysed through diversity indices such as Shannon-Wiener (H’), Simpson’s dominance index (D), Pielou’s evenness (J’), true diversity (D1), and richness (S). The influence of the physicochemical variables on the macrobenthos was estimated by canonical correspondence analysis (CCA) and non-metric multidimensional scaling (NMDS). Dissolved oxygen was found to have lower values (<0.5 mg/l) than specified in the Environmental Quality Standards (EQS). Macroinvertebrate richness for the whole reservoir was 17 families, and the family with highest relative abundance was Chironomidae (42.24% in the low zone, 51% in the middle zone and 40.43% in the high zone). The indices showed greater species richness in the high zone, where there are no fish farms. Dissolved oxygen and conductivity were the main factors determining macrobenthos distribution and composition.","PeriodicalId":36863,"journal":{"name":"Neotropical Biodiversity","volume":"8 1","pages":"99 - 107"},"PeriodicalIF":0.9,"publicationDate":"2022-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48646312","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}
Pub Date : 2022-02-23DOI: 10.1080/23766808.2022.2040277
K. Núñez, Griselda Zárate-Betzel, Fátima Ortiz, M. Mendoza, María Vera, Andrea Weiler, Marta Duré
RESUMEN En la Región Oriental del Paraguay se encuentran los humedales del Complejo Ypoá, declarados como sitio RAMSAR y categorizados como Reserva de Recursos Manejados. Pese a estas categorías de protección, su biodiversidad ha sido escasamente estudiada. El objetivo de este trabajo fue determinar la riqueza, composición y abundancia de anuros y reptiles de estos humedales (diversidad alfa y gamma), cuantificar la diferencia en la composición de especies entre los sitios de muestreo (diversidad beta) y evaluar la variación temporal en la riqueza de especies en relación a variables climáticas. Se seleccionaron tres sitios de muestreo y se realizó un esfuerzo de muestreo de 45 días. La detección de herpetozoos se realizó a través de búsquedas activas asociadas a listas MacKinnon en el caso de anuros, instalación de trampas pozo con cercos de conducción y redes de embudo acuáticas. Los datos de precipitación, humedad y temperatura mensual se obtuvieron del Centro Meteorológico Nacional. Se identificaron 32 especies de anuros y 21 de reptiles a escala regional en los humedales del Ypoá. El sitio con mayor riqueza de especies de anuros fue Quiindy (27 especies), y para reptiles, Carapeguá (10 especies). Las curvas de acumulación y los estimadores de riqueza indicaron que a mayor esfuerzo de muestreo se seguirán registrando especies de reptiles, sin embargo, en el caso de los anuros, el muestreo fue suficiente para caracterizar el 89 % de la riqueza de este ensamble. La similitud en la composición de anuros entre los sitios varía entre 0.571–0.708, y entre reptiles 0.071–0.182. Menos de un tercio de las especies registradas fueron clasificadas como abundantes en los humedales, incluyendo Melanophryniscus paraguayensis, la única especie de anuro endémica del Paraguay. Se registró una correlación positiva entre la riqueza de especies de anuros y reptiles y la temperatura del aire en los meses de muestreo.
{"title":"Diversidad alfa, beta y gamma de ensambles de los anuros y reptiles de humedales del Ypoá, Paraguay","authors":"K. Núñez, Griselda Zárate-Betzel, Fátima Ortiz, M. Mendoza, María Vera, Andrea Weiler, Marta Duré","doi":"10.1080/23766808.2022.2040277","DOIUrl":"https://doi.org/10.1080/23766808.2022.2040277","url":null,"abstract":"RESUMEN En la Región Oriental del Paraguay se encuentran los humedales del Complejo Ypoá, declarados como sitio RAMSAR y categorizados como Reserva de Recursos Manejados. Pese a estas categorías de protección, su biodiversidad ha sido escasamente estudiada. El objetivo de este trabajo fue determinar la riqueza, composición y abundancia de anuros y reptiles de estos humedales (diversidad alfa y gamma), cuantificar la diferencia en la composición de especies entre los sitios de muestreo (diversidad beta) y evaluar la variación temporal en la riqueza de especies en relación a variables climáticas. Se seleccionaron tres sitios de muestreo y se realizó un esfuerzo de muestreo de 45 días. La detección de herpetozoos se realizó a través de búsquedas activas asociadas a listas MacKinnon en el caso de anuros, instalación de trampas pozo con cercos de conducción y redes de embudo acuáticas. Los datos de precipitación, humedad y temperatura mensual se obtuvieron del Centro Meteorológico Nacional. Se identificaron 32 especies de anuros y 21 de reptiles a escala regional en los humedales del Ypoá. El sitio con mayor riqueza de especies de anuros fue Quiindy (27 especies), y para reptiles, Carapeguá (10 especies). Las curvas de acumulación y los estimadores de riqueza indicaron que a mayor esfuerzo de muestreo se seguirán registrando especies de reptiles, sin embargo, en el caso de los anuros, el muestreo fue suficiente para caracterizar el 89 % de la riqueza de este ensamble. La similitud en la composición de anuros entre los sitios varía entre 0.571–0.708, y entre reptiles 0.071–0.182. Menos de un tercio de las especies registradas fueron clasificadas como abundantes en los humedales, incluyendo Melanophryniscus paraguayensis, la única especie de anuro endémica del Paraguay. Se registró una correlación positiva entre la riqueza de especies de anuros y reptiles y la temperatura del aire en los meses de muestreo.","PeriodicalId":36863,"journal":{"name":"Neotropical Biodiversity","volume":"8 1","pages":"89 - 98"},"PeriodicalIF":0.9,"publicationDate":"2022-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41744432","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}
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