Latin American Journal of Aquatic Mammals最新文献_第8页

Recent strandings of sperm whale, Physeter macrocephalus, in southern Peru 最近在秘鲁南部搁浅的抹香鲸，大头鲸

Latin American Journal of Aquatic Mammals Pub Date : 2018-03-02 DOI: 10.5597/00236

Jose Pizarro-Neyra

引用次数: 3

Behavior and habitat use of released rehabilitated Amazonian manatees in Peru 秘鲁释放的恢复的亚马逊海牛的行为和栖息地利用

Latin American Journal of Aquatic Mammals Pub Date : 2018-03-02 DOI: 10.5597/00234

S. Landeo-Yauri, Nataly Castelblanco-Martínez, M. Williams

{"title":"Behavior and habitat use of released rehabilitated Amazonian manatees in Peru","authors":"S. Landeo-Yauri, Nataly Castelblanco-Martínez, M. Williams","doi":"10.5597/00234","DOIUrl":"https://doi.org/10.5597/00234","url":null,"abstract":"The Amazonian manatee ( Trichechus inunguis) is endangered due to illegal hunting. In Peru, the Centro de Rescate Amazonico (CREA) rehabilitates and releases rescued manatees. Tree females and two males were released in El Dorado Lake in July 2011 and radio tracked until November 2011. Movements, habitat use and behavior recorded during the post-release period were used to evaluate the manatees’ adaptation to free-living conditions. A total of 140 locations was registered during 91 days of tracking. Females showed greater residence time than males, which migrated out of the lake. Females selectively used the micro habitats of the study area, preferring ﬂoating vegetation, followed by open water and lastly shore macrophytes. Most idling behaviors were registered in areas with ﬂoating macrophytes, and open water was mainly used for traveling. No correlation between sighting hour and sighting location (micro habitat type) was detected. The use of suitable zones, in addition to natural behavior, suggests that these rescued manatees responded well to free-living conditions after release. Some considerations are provided with the purpose of strengthening manatee rehabilitation programs and improving future releases, emphasizing the importance of choosing appropriate individuals, as well as suitable areas and times to help improve release outcome.","PeriodicalId":17967,"journal":{"name":"Latin American Journal of Aquatic Mammals","volume":"1 1","pages":"17-27"},"PeriodicalIF":0.0,"publicationDate":"2018-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85213056","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: 3

A review on the distribution, abundance, residency, survival and population structure of coastal bottlenose dolphins in Argentina 阿根廷沿海宽吻海豚的分布、丰度、居住、生存和种群结构研究进展

Latin American Journal of Aquatic Mammals Pub Date : 2018-03-02 DOI: 10.5597/00233

E. Vermeulen, R. Bastida, Leonardo G. Berninsone, P. Bordino, M. Failla, P. Fruet, G. Harris, M. Iñíguez, M. Marchesi, P. Petracci, Laura M. Reyes, M. Sironi, S. Bräger

{"title":"A review on the distribution, abundance, residency, survival and population structure of coastal bottlenose dolphins in Argentina","authors":"E. Vermeulen, R. Bastida, Leonardo G. Berninsone, P. Bordino, M. Failla, P. Fruet, G. Harris, M. Iñíguez, M. Marchesi, P. Petracci, Laura M. Reyes, M. Sironi, S. Bräger","doi":"10.5597/00233","DOIUrl":"https://doi.org/10.5597/00233","url":null,"abstract":"Although bottlenose dolphins Tursiops truncatus are among the most common delphinid species, global population trends remain poorly understood. To improve the knowledge of the species in the Southwest Atlantic Ocean, this paper reviews all available data related to the distribution and occurrence, abundance, residency and ranging patterns, group size and composition, survival and reproduction and population structure of the coastal bottlenose dolphin in Argentina. Most information proved to be scattered in time and space. Based on the available data, total abundance of coastal bottlenose dolphins in Argentina appears to be low. Data show sightings decreased notably since the 1990s in the northern province of Buenos Aires and the province of Chubut, with the species having disappeared completely from the former region. Data also indicated that two genetically and morphologically distinct coastal populations occur in Argentinean coastal waters, with a sympatric distribution in the provinces of Rio Negro and Chubut. One is an isolated ‘Evolutionary Signifcant Unit’ within the larger Southwest Atlantic, whereas the other population appears to be genetically related to the Southwest Atlantic oﬀshore ecotype. In the absence of more substantial data, the present information is pertinent to our scientifc knowledge of the species in the country, collating all published information as well as information from grey literature and previously unpublished data. However, the available information appears to remain insufcient to explain the apparent decline in sightings and to assess the remaining abundance nationwide accurately. Therefore, we strongly recommend increased research eﬀorts for an in-depth assessment of the species’ population status in Argentina.","PeriodicalId":17967,"journal":{"name":"Latin American Journal of Aquatic Mammals","volume":"176 1","pages":"2-16"},"PeriodicalIF":0.0,"publicationDate":"2018-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77688059","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: 8

Recurrent sightings of a Southern elephant seal (Mirounga leonina) on the southeast coast of Brazil, 2012 – 2017 2012年至2017年，在巴西东南海岸反复发现南象海豹(miounga leonina)

Latin American Journal of Aquatic Mammals Pub Date : 2018-03-02 DOI: 10.5597/00237

L. F. S. Mayorga, R. C. C. Bhering, R. Hurtado, R. Vanstreels

引用次数: 5

Marine mammal distribution in Ecuador: surveys aboard a ship of opportunity as a means of monitoring relative abundance 厄瓜多尔海洋哺乳动物分布:机遇号船上的调查作为监测相对丰度的一种手段

Latin American Journal of Aquatic Mammals Pub Date : 2018-03-02 DOI: 10.5597/00235

J. E. O'Hern, Michelle Sculley, Kerri Jean-Smith, D. Biggs, N. Slowey, Daniela Alarcòn Ruales, R. Duncan

{"title":"Marine mammal distribution in Ecuador: surveys aboard a ship of opportunity as a means of monitoring relative abundance","authors":"J. E. O'Hern, Michelle Sculley, Kerri Jean-Smith, D. Biggs, N. Slowey, Daniela Alarcòn Ruales, R. Duncan","doi":"10.5597/00235","DOIUrl":"https://doi.org/10.5597/00235","url":null,"abstract":"Five marine mammal surveys between 2008 and 2011 were conducted aboard the Buque de Investigacion Orion (the research vessel for the Oceanographic Institute of the Ecuadorian Navy) within oceanic waters adjacent to mainland Ecuador and the Galapagos Islands. The surveys dedicated extensive time in deep, oﬀshore waters where cetaceans were not densely present. Sightings of 12 species were compared with an earlier survey aboard the B/I Orion in 2001 as well as with a subset of published data from three NOAA STAR ( Stenella Abundance Research) surveys between 1999 and 2003. Additionally, a small boat, near-shore survey, was conducted during June 2010 among and near the Galapagos Islands. Encounter rates ranged annually from 0.012 cetacean/km to 0.027 cetacean/km. The highest encounter rate aboard the B/I Orion took place during the April 2009 survey. In order to compare sighting rates between the B/I Orion and NOAA platforms, the average eﬀective half-strip widths were used to determine encounter rates per area eﬀectively searched. A zonation within the study region was observed between odontocete and balaenopterid cetaceans as well as between striped ( Stenella coeruleoalba ) and short-beaked common dolphins ( Delphinus delphis ). Several methodological aspects of surveys and geographical features that may inﬂuence encounter rates and subsequent abundance estimates are discussed. This study demonstrates that vessels of opportunity provide a valuable means of studying open-ocean and coastal distributions of marine mammals. Possible methodological improvements, such as the use of high-power binoculars, that could increase the absolute number of sightings, the efficiency of these opportunistic surveys, and improve the sighting rates of more evasive species are discussed.","PeriodicalId":17967,"journal":{"name":"Latin American Journal of Aquatic Mammals","volume":"51 1","pages":"28-39"},"PeriodicalIF":0.0,"publicationDate":"2018-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89209834","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: 6

Unusual aggressive behavior encountered by divers from Antillean manatees (Trichechus manatus manatus) in Puerto Rico 在波多黎各，来自安的列斯海牛(trichecchus manatus manatus)的潜水员遇到了不寻常的攻击行为

Latin American Journal of Aquatic Mammals Pub Date : 2018-03-02 DOI: 10.5597/00238

Chelsea A. Harms-Tuohy, E. Tuohy

引用次数: 1

Encounter rates of the Bolivian river dolphin (Inia boliviensis) in northeastern Bolivia 玻利维亚东北部玻利维亚河豚(Inia boliviensis)的偶遇率

Latin American Journal of Aquatic Mammals Pub Date : 2018-03-02 DOI: 10.5597/00240

Enzo Aliaga Rossel, Luis Guizada

引用次数: 2

Observation of a potential mating herd in Amazonian manatee 亚马逊海牛潜在交配群的观察

Latin American Journal of Aquatic Mammals Pub Date : 2018-03-02 DOI: 10.5597/00239

Camila Carvalho Carvalho, D. M. Gräbin, M. Marmontel

引用次数: 2

Report of the Working Group on Interactions between Humans and Tursiops truncatus in the Southwest Atlantic Ocean 人类与西南大西洋trunsiops truncatus相互作用工作组报告

Latin American Journal of Aquatic Mammals Pub Date : 2017-01-08 DOI: 10.5597/LAJAM00218

P. Fruet, C. Zappes, T. Bisi, P. C. Simões‐Lopes, P. Laporta, J. Loureiro, P. Flores

{"title":"Report of the Working Group on Interactions between Humans and Tursiops truncatus in the Southwest Atlantic Ocean","authors":"P. Fruet, C. Zappes, T. Bisi, P. C. Simões‐Lopes, P. Laporta, J. Loureiro, P. Flores","doi":"10.5597/LAJAM00218","DOIUrl":"https://doi.org/10.5597/LAJAM00218","url":null,"abstract":"In this work we compiled the available information about humans and bottlenose dolphin interactions in the Southwest Atlantic Ocean (SWAO), including issues as historical direct takes, incidental captures in fisheries, positive interactions with fisheries, interactions of dolphins with tourism and boat traffic, habitat modification or degradation, and environmental pollution. The data compiled in this review demonstrated that coastal bottlenose dolphins are under anthropogenic pressure in the SWAO. Direct take of bottlenose dolphins in the wild does not appear to be an issue of conservation concern in the SWAO. Although the species is exposed to bioaccumulation of micropollutants, it is suggested that contamination level is lower when compared to bottlenose dolphins from other continents. Coastal works can impact bottlenose dolphin behavior and habitat use in a short-term, but those seem to be reversible when works stop. Bycatch occurs throughout the species distribution and seems to be occasional in Uruguayan and Argentinean waters, where there is evidence of a historic decline in dolphin sightings. In Brazil, bycatch is apparently low in the northeast and southeast coasts, but is frequent in certain areas of southern Brazil. Studies on the subject are scarce or preliminary and a great effort is still required to understand the real impact of human activities on bottlenose dolphins in the SWAO.","PeriodicalId":17967,"journal":{"name":"Latin American Journal of Aquatic Mammals","volume":"11 1","pages":"79-98"},"PeriodicalIF":0.0,"publicationDate":"2017-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74595116","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: 8

Reports of strandings and sightings of bottlenose dolphins (Tursiops truncatus) in northeastern Brazil and Brazilian oceanic islands 在巴西东北部和巴西海洋岛屿搁浅和目击宽吻海豚(Tursiops truncatus)报告

Latin American Journal of Aquatic Mammals Pub Date : 2017-01-08 DOI: 10.5597/00227

A. Meirelles, T. M. Campos, Milton C. C. Marcondes, K. Groch, L. R. A. Souto, Maria do Socorro Santos dos Reis, I. Normande, F. Luna, Lídio França do Nascimento, F. Silva, J. E. Vergara‐Parente, J. Borges, A. Jesus, F. Attademo, J. M. Silva

{"title":"Reports of strandings and sightings of bottlenose dolphins (Tursiops truncatus) in northeastern Brazil and Brazilian oceanic islands","authors":"A. Meirelles, T. M. Campos, Milton C. C. Marcondes, K. Groch, L. R. A. Souto, Maria do Socorro Santos dos Reis, I. Normande, F. Luna, Lídio França do Nascimento, F. Silva, J. E. Vergara‐Parente, J. Borges, A. Jesus, F. Attademo, J. M. Silva","doi":"10.5597/00227","DOIUrl":"https://doi.org/10.5597/00227","url":null,"abstract":"This study revises and updates information on bottlenose dolphin Tursiops truncatusstrandings and sightings in northeastern Brazil. A total of 72 strandings were recorded from 1992 to 2010, and 51 sightings were recorded from 1988 to 2010 along the states from Ceara to Bahia, including Fernando de Noronha and Sao Pedro and Sao Paulo archipelagos, Rocas Atoll and Abrolhos Bank. Most strandings were recorded in the states of Pernambuco, Bahia and Rio Grande do Norte. The number of reports was higher during summer, but no statistically significant difference was found between summer and other seasons. The majority of the stranded animals were adults (70.6%). Stranded calves were not observed. Total body length ranged from 138 to 321cm: 138 to 310cm for males; and 168 to 288cm for females. The average adult body length was 281cm (SD = 0.22). For stranding events where sex was determined (n = 29), a highly statistically significant difference was found between the number of males (n = 21) and females (n = 8). A total of six animals (8.3%) showed evidence of fisheries interactions such as net marks or removal of meat, blubber and eyes. Twenty-two sightings were recorded in the northeastern region, mostly in small islands and Rocas Atoll. This finding shows that the bottlenose dolphin is mainly an oceanic species in the region. More efforts are needed to improve our understanding of the populations and conservation status of bottlenose dolphins in this region.","PeriodicalId":17967,"journal":{"name":"Latin American Journal of Aquatic Mammals","volume":"9 1","pages":"178-190"},"PeriodicalIF":0.0,"publicationDate":"2017-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90243270","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: 10