A. Frisch‐Jordán, N. Ransome, Oscar S. Aranda-Mena, Fernando Romo-Sirvent
Banderas Bay, located in the Mexican Pacific, is a breeding/calving ground for the North Pacific stock of humpback whales (Megaptera novaeangliae) during the winter. While sporadic registers of humpback whales feeding on their mating grounds exist, this is the first occasion where feeding activity was observed intensively and extensively on a breeding ground. Between 19 December 2011 and 6 March 2012, 26 such occurrences were registered in Banderas Bay, along the mainland pacific coast. On five occasions, groups of 20 or more individuals were recorded feeding. They were feeding over and under the surface using lunging and gulping techniques. On several occasions humpbacks were observed feeding alongside Bryde´s whales (Balaenoptera edeni), Pantropical spotted dolphins (Stenella attenuata) and Bottlenose dolphins (Tursiops truncatus). Two different samples of fish at two different feeding sites were taken and the fish identifications showed these were Pacific anchovies (Cetengraulis mysticetus). Among the 26 sightings, nine different species of birds were registered feeding in the same area as the humpback whales. The number of whales feeding over an extended period of time in their breeding ground could be an indicator that there was not enough food in their feeding grounds, but the possibility that they might just be taking advantage of good food availability is also possible.
{"title":"Intensive feeding of humpback whales (Megaptera novaeangliae) in the breeding ground of Banderas Bay, Mexico","authors":"A. Frisch‐Jordán, N. Ransome, Oscar S. Aranda-Mena, Fernando Romo-Sirvent","doi":"10.5597/00251","DOIUrl":"https://doi.org/10.5597/00251","url":null,"abstract":"Banderas Bay, located in the Mexican Pacific, is a breeding/calving ground for the North Pacific stock of humpback whales (Megaptera novaeangliae) during the winter. While sporadic registers of humpback whales feeding on their mating grounds exist, this is the first occasion where feeding activity was observed intensively and extensively on a breeding ground. Between 19 December 2011 and 6 March 2012, 26 such occurrences were registered in Banderas Bay, along the mainland pacific coast. On five occasions, groups of 20 or more individuals were recorded feeding. They were feeding over and under the surface using lunging and gulping techniques. On several occasions humpbacks were observed feeding alongside Bryde´s whales (Balaenoptera edeni), Pantropical spotted dolphins (Stenella attenuata) and Bottlenose dolphins (Tursiops truncatus). Two different samples of fish at two different feeding sites were taken and the fish identifications showed these were Pacific anchovies (Cetengraulis mysticetus). Among the 26 sightings, nine different species of birds were registered feeding in the same area as the humpback whales. The number of whales feeding over an extended period of time in their breeding ground could be an indicator that there was not enough food in their feeding grounds, but the possibility that they might just be taking advantage of good food availability is also possible.","PeriodicalId":17967,"journal":{"name":"Latin American Journal of Aquatic Mammals","volume":"2 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78767123","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}
The dwarf sperm whale, Kogia sima, is one of the lesser known Odontoceti species, in spite of its worldwide distribution, and is considered rare due to the difficult identification in the field. Detailed information is scarce and mostly comes from stranding events or bycatch animals, just a few sightings correspond to live specimens. In the Caribbean Basin, the species has been reported in the Lesser Antilles, Mexico, Honduras, Costa Rica and Venezuela. We present the first stranding record of Kogia sima in the Colombian Caribbean coast from a pregnant female in Mendihuaca region, Magdalena Department. The specimen showed no fishing or entanglement lines whatsoever, and the overall condition was good. Morphological measurements were taken and the confirmation of the species was made from the following features: body length, height and position of dorsal fin, position of blowhole, and number of teeth in the lower jaw. The record of the adult specimen is documented in the System of Information of Marine Biodiversity of Colombia –SIBM and the fetus is deposited in the Mammal collection of the Museum of Marine Natural History of Colombia –MAKURIWA under the catalogue number INV-MAM004.
矮抹香鲸(Kogia sima)是一种鲜为人知的齿鲸类物种，尽管它分布在世界各地，但由于在野外难以识别，它被认为是罕见的。详细的信息很少，主要来自搁浅事件或附带捕获的动物，只有少数目击与活标本相对应。在加勒比盆地，该物种在小安的列斯群岛、墨西哥、洪都拉斯、哥斯达黎加和委内瑞拉都有报道。我们在哥伦比亚加勒比海岸马格达莱纳省Mendihuaca地区的一只怀孕雌性中首次提出了Kogia sima搁浅的记录。该标本没有任何钓鱼或缠绕线，整体状况良好。对其进行了形态学测量，根据体长、背鳍高度和位置、气孔位置、下颌牙齿数量等特征对其种类进行了确认。成体标本记录在哥伦比亚海洋生物多样性信息系统(System of Information of Marine Biodiversity of Colombia -SIBM)中，胎儿保存在哥伦比亚海洋自然历史博物馆(makuriwa)哺乳动物收藏中，目录号为INV-MAM004。
{"title":"First stranding record of Kogia sima (Owen, 1866) in the Colombian Caribbean","authors":"Maria A. Mutis, A. Polanco","doi":"10.5597/00250","DOIUrl":"https://doi.org/10.5597/00250","url":null,"abstract":"The dwarf sperm whale, Kogia sima, is one of the lesser known Odontoceti species, in spite of its worldwide distribution, and is considered rare due to the difficult identification in the field. Detailed information is scarce and mostly comes from stranding events or bycatch animals, just a few sightings correspond to live specimens. In the Caribbean Basin, the species has been reported in the Lesser Antilles, Mexico, Honduras, Costa Rica and Venezuela. We present the first stranding record of Kogia sima in the Colombian Caribbean coast from a pregnant female in Mendihuaca region, Magdalena Department. The specimen showed no fishing or entanglement lines whatsoever, and the overall condition was good. Morphological measurements were taken and the confirmation of the species was made from the following features: body length, height and position of dorsal fin, position of blowhole, and number of teeth in the lower jaw. The record of the adult specimen is documented in the System of Information of Marine Biodiversity of Colombia –SIBM and the fetus is deposited in the Mammal collection of the Museum of Marine Natural History of Colombia –MAKURIWA under the catalogue number INV-MAM004.","PeriodicalId":17967,"journal":{"name":"Latin American Journal of Aquatic Mammals","volume":"13 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87627310","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}
I. C. Laurentino, R. M. Sousa, G. Corso, R. Sousa-lima
Communal latrines have important biological and ecological roles for the latrine builder species and for other taxa that visit these sites and use feces to obtain nutrients and microorganisms that aid in digestion of compounds hard to process. Nonetheless, coprophagous animals must deal with the costs associated with parasites and other pathogenspresent in latrines. Parasites and pathogens are found in Neotropical otter latrines. This species is carnivorous and uses latrines for territorial marking. The objective of this study was to identify vertebrate species associated with otter latrines and species that use feces as food resource. Latrines were monitored with camera traps on a monthly basis in 24-hour cycles. We recorded nine species of vertebrates, including birds, reptiles and mammals, visiting the latrines. Feeding dependency from latrines in the Atlantic Forest may not be related to periods of low food availability (dry season). Visitors that ate at the latrines do not have the same feeding habits as otters. The assumption that mammals would avoid ingesting disease-loaded feces from latrines did not hold, since two mammal species did. We speculate these mammals might be more resistant or less susceptible to pathogens found in otter feces.
{"title":"To eat or not to eat: ingestion and avoidance of fecal content from communal latrines of Lontra longicaudis (Olfers, 1818)","authors":"I. C. Laurentino, R. M. Sousa, G. Corso, R. Sousa-lima","doi":"10.5597/00248","DOIUrl":"https://doi.org/10.5597/00248","url":null,"abstract":"Communal latrines have important biological and ecological roles for the latrine builder species and for other taxa that visit these sites and use feces to obtain nutrients and microorganisms that aid in digestion of compounds hard to process. Nonetheless, coprophagous animals must deal with the costs associated with parasites and other pathogenspresent in latrines. Parasites and pathogens are found in Neotropical otter latrines. This species is carnivorous and uses latrines for territorial marking. The objective of this study was to identify vertebrate species associated with otter latrines and species that use feces as food resource. Latrines were monitored with camera traps on a monthly basis in 24-hour cycles. We recorded nine species of vertebrates, including birds, reptiles and mammals, visiting the latrines. Feeding dependency from latrines in the Atlantic Forest may not be related to periods of low food availability (dry season). Visitors that ate at the latrines do not have the same feeding habits as otters. The assumption that mammals would avoid ingesting disease-loaded feces from latrines did not hold, since two mammal species did. We speculate these mammals might be more resistant or less susceptible to pathogens found in otter feces.","PeriodicalId":17967,"journal":{"name":"Latin American Journal of Aquatic Mammals","volume":"17 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87288447","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}
The authors describe antagonistic interactions between short-finned pilot whales (Globicephara machrorhyncus) and humpback whales (Megaptera novaeangliae) in Puerto Rican waters.
{"title":"Rare and antagonistic interactions between short-finned pilot whales (Globicephala macrorhynchus and fasting humpback whales (Megaptera novaeangliae) off Western Puerto Rico","authors":"M. M. Mackay, Cathy Bacon","doi":"10.5597/00252","DOIUrl":"https://doi.org/10.5597/00252","url":null,"abstract":"The authors describe antagonistic interactions between short-finned pilot whales (Globicephara machrorhyncus) and humpback whales (Megaptera novaeangliae) in Puerto Rican waters.","PeriodicalId":17967,"journal":{"name":"Latin American Journal of Aquatic Mammals","volume":"22 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73151027","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}
Daniela Carcamo, M. Pizarro, Muriel Orellana, Guido Pavez, L. Durán, Doris Oliva
The South American fur seal (SAFS), Arctocephalus australis, has an estimated abundance of 219,000 individuals. The distribution range of this top marine predator along the Pacifc coast of South America is discontinuous, with a gap between 29°02’S-43°36’S, whereas the Atlantic coast presents a continuous distribution. Little is known aboutthe population dynamics of the species in Chile, as there have been few observations of vagrant individuals within the distribution gap and partial population censuses on dates that do not fit with the reproductive season in northern andsouthern Chile. The aim of this study is to identify the presence of A. australis colonies and summarize the sightings in central Chile. Aerial censuses were performed between 32°12’S-39°24’S during the austral winter and summer (2015) and between 41°44’S-44°55’S during summer (2013, 2016-2018). Official stranding records were also included to complementthe research sightings. We registered a total of 54 SAFS in the Chilean distribution gap, most of them during winter (89%) and with a higher proportion of females (72%). Two non-breeding colonies were found in the Biobío Region during the winter of 2015, Islote del Trabajo (38°25’S) and Islote Quechol (38°26’S), with 27 ± 1 and 16 ± 0 individuals, respectively. The sightings of adult individuals suggest their arrival at these latitudes to carry out foraging and resting activities, probably from Guafo Island (43°36’S). The last Pleistocene glaciation, hunting activities during the eighteenth century and ENSO events could have conditioned the current abundance and range of distribution of A. australis in South America; therefore, the establishment of new non-breeding colonies in the gap of distribution could lead to new breeding grounds in thefuture.
据估计，南美毛海豹(SAFS)，即南方海豹(Arctocephalus australis)的数量为219,000只。这种顶级海洋捕食者在南美洲太平洋沿岸的分布范围是不连续的，在29°02′s -43°36′s之间有间隙，而大西洋沿岸则呈连续分布。在智利，人们对该物种的种群动态知之甚少，因为在分布间隙内对流浪个体的观察很少，而且在智利北部和南部的部分种群普查日期与繁殖季节不符。本研究的目的是确定南方南方居群的存在，并总结在智利中部的发现。空中普查在南方冬季和夏季(2015年)的32°12′s -39°24′s之间以及夏季(2013年，2016-2018年)的41°44′s -44°55′s之间进行。官方搁浅记录也包括在内，以补充研究目击。我们在智利分布区共登记了54只SAFS，其中大多数发生在冬季(89%)，女性比例较高(72%)。2015年冬季在Biobío地区发现了2个非繁殖种群，Islote del Trabajo(38°25’s)和Islote Quechol(38°26’s)，分别为27±1和16±0只。对成年个体的观察表明，它们可能从瓜福岛(43°36’s)到达这些纬度进行觅食和休息活动。最后一次更新世冰期、18世纪的狩猎活动和ENSO事件可能决定了南方南方古猿目前在南美洲的数量和分布范围;因此，在分布间隙中建立新的非繁殖地可能会导致未来新的繁殖地。
{"title":"New non-breeding colonies of the South American fur seal in central Chile. Is the distribution in the southeastern Pacific waters extending?","authors":"Daniela Carcamo, M. Pizarro, Muriel Orellana, Guido Pavez, L. Durán, Doris Oliva","doi":"10.5597/lajam00249","DOIUrl":"https://doi.org/10.5597/lajam00249","url":null,"abstract":"The South American fur seal (SAFS), Arctocephalus australis, has an estimated abundance of 219,000 individuals. The distribution range of this top marine predator along the Pacifc coast of South America is discontinuous, with a gap between 29°02’S-43°36’S, whereas the Atlantic coast presents a continuous distribution. Little is known aboutthe population dynamics of the species in Chile, as there have been few observations of vagrant individuals within the distribution gap and partial population censuses on dates that do not fit with the reproductive season in northern andsouthern Chile. The aim of this study is to identify the presence of A. australis colonies and summarize the sightings in central Chile. Aerial censuses were performed between 32°12’S-39°24’S during the austral winter and summer (2015) and between 41°44’S-44°55’S during summer (2013, 2016-2018). Official stranding records were also included to complementthe research sightings. We registered a total of 54 SAFS in the Chilean distribution gap, most of them during winter (89%) and with a higher proportion of females (72%). Two non-breeding colonies were found in the Biobío Region during the winter of 2015, Islote del Trabajo (38°25’S) and Islote Quechol (38°26’S), with 27 ± 1 and 16 ± 0 individuals, respectively. The sightings of adult individuals suggest their arrival at these latitudes to carry out foraging and resting activities, probably from Guafo Island (43°36’S). The last Pleistocene glaciation, hunting activities during the eighteenth century and ENSO events could have conditioned the current abundance and range of distribution of A. australis in South America; therefore, the establishment of new non-breeding colonies in the gap of distribution could lead to new breeding grounds in thefuture.","PeriodicalId":17967,"journal":{"name":"Latin American Journal of Aquatic Mammals","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79748498","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}
Wojtek Bachara, Martha Watkins Gilkes, Jaime Bolaños‐Jiménez, A. Mignucci-Giannoni
Cuvier's beaked whale is the most cosmopolitan of the beaked whales and is found in all oceans except in the high polar waters. This species is known from over 1800 strandings. In the Caribbean strandings are rare, and we present a first record from Antigua and Barbuda.
{"title":"First stranding record of a Cuvier’s beaked whale (Ziphius cavirostris) on the island of Barbuda, Eastern Caribbean","authors":"Wojtek Bachara, Martha Watkins Gilkes, Jaime Bolaños‐Jiménez, A. Mignucci-Giannoni","doi":"10.5597/00245","DOIUrl":"https://doi.org/10.5597/00245","url":null,"abstract":"Cuvier's beaked whale is the most cosmopolitan of the beaked whales and is found in all oceans except in the high polar waters. This species is known from over 1800 strandings. In the Caribbean strandings are rare, and we present a first record from Antigua and Barbuda.","PeriodicalId":17967,"journal":{"name":"Latin American Journal of Aquatic Mammals","volume":"25 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89293516","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}
G. Rodriguez-Ferrer, Roberto C. Reyes, N. Hammerman, J. E. García-Hernández
Opportunistic encounters by experts and the public (i.e. fishermen, tourists) can be great assets to understanding cetacean distribution, especially in areas where surveys are limited. Sightings of Puerto Rican pelagic cetaceans have been reported in the past, with known seasonality in some species. Within this report, we document sightings for eight species, report new monthly distributions for three of these species, as well as the presence of rough-toothed dolphins close to the coast, and the first underwater sighting of a minke whale (Balaenoptera acutorostrata) off San Juan, Puerto Rico. Unfortunately, the lack of long-term studies due to limited funding and resources has been an obstacle in determining species diversity and overall health of cetacean populations. However, this note provides evidence that collaboration between marine biologists and citizen-based science is possible and desired, and serves as a valuable resource to protect and conserve native, pelagic, and transient cetacean species around Puerto Rican waters.
{"title":"Cetacean sightings in Puerto Rican waters: including the first underwater photographic documentation of a minke whale (Balaenoptera acutorostrata)","authors":"G. Rodriguez-Ferrer, Roberto C. Reyes, N. Hammerman, J. E. García-Hernández","doi":"10.5597/00246","DOIUrl":"https://doi.org/10.5597/00246","url":null,"abstract":"Opportunistic encounters by experts and the public (i.e. fishermen, tourists) can be great assets to understanding cetacean distribution, especially in areas where surveys are limited. Sightings of Puerto Rican pelagic cetaceans have been reported in the past, with known seasonality in some species. Within this report, we document sightings for eight species, report new monthly distributions for three of these species, as well as the presence of rough-toothed dolphins close to the coast, and the first underwater sighting of a minke whale (Balaenoptera acutorostrata) off San Juan, Puerto Rico. Unfortunately, the lack of long-term studies due to limited funding and resources has been an obstacle in determining species diversity and overall health of cetacean populations. However, this note provides evidence that collaboration between marine biologists and citizen-based science is possible and desired, and serves as a valuable resource to protect and conserve native, pelagic, and transient cetacean species around Puerto Rican waters.","PeriodicalId":17967,"journal":{"name":"Latin American Journal of Aquatic Mammals","volume":"68 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89256233","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}
M. Sironi, L. Alzugaray, A. Sáez, Florencia O. Vilches, A. Ajó, Paula Faiferman
Whale-watching vessels can be used as platforms to collect scientific data on the natural history of cetaceans. Vessels with underwater viewing decks are exceptional and offer a unique view of the whales. We assessed the underwater viewing platform of the semi-submersible vessel Yellow Submarine that operates off Puerto Pirámides, Península Valdés, Argentina as a platform of opportunity for southern right whale (Eubalaena australis) research. The variables considered during observations included, among others, the age class and sex of the animals observed, behavioral patterns, opportunities for individual photo-identification, distance and duration of the underwater observations and how weather conditions affected data collection. The Yellow Submarine offers a unique platform to make underwater observations of southern right whales in this calving ground. The main limitations are the relatively short duration of the observations and reduced visibility in spring.
{"title":"The use of underwater viewing deck of the semi-submersible whalewatching vessel Yellow Submarine at Península Valdés, Argentina as a platform of opportunity for scientifc research with the southern right whale, Eubalaena australis","authors":"M. Sironi, L. Alzugaray, A. Sáez, Florencia O. Vilches, A. Ajó, Paula Faiferman","doi":"10.5597/00242","DOIUrl":"https://doi.org/10.5597/00242","url":null,"abstract":"Whale-watching vessels can be used as platforms to collect scientific data on the natural history of cetaceans. Vessels with underwater viewing decks are exceptional and offer a unique view of the whales. We assessed the underwater viewing platform of the semi-submersible vessel Yellow Submarine that operates off Puerto Pirámides, Península Valdés, Argentina as a platform of opportunity for southern right whale (Eubalaena australis) research. The variables considered during observations included, among others, the age class and sex of the animals observed, behavioral patterns, opportunities for individual photo-identification, distance and duration of the underwater observations and how weather conditions affected data collection. The Yellow Submarine offers a unique platform to make underwater observations of southern right whales in this calving ground. The main limitations are the relatively short duration of the observations and reduced visibility in spring.","PeriodicalId":17967,"journal":{"name":"Latin American Journal of Aquatic Mammals","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90428567","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}
The data consists of spreadsheets containing (i) otolith and cephalopod beak numbers and sizes, and the time of recovery for seven different prey species of different meals; (ii) conditions of prey structures for each meal and its time of recovery; and (iii) the times that the plastic colour markers were ingested and evacuated from a feeding experiment with a franciscana dolphin in captivity.
{"title":"Opportunistic feeding experiment in a captive franciscana (Pontoporia blainvillei): assessing gastrointestinal transit time and gastric digestion.","authors":"M. Bassoi, J. G. Shepard, E. Secchi","doi":"10.5597/00244","DOIUrl":"https://doi.org/10.5597/00244","url":null,"abstract":"The data consists of spreadsheets containing (i) otolith and cephalopod beak numbers and sizes, and the time of recovery for seven different prey species of different meals; (ii) conditions of prey structures for each meal and its time of recovery; and (iii) the times that the plastic colour markers were ingested and evacuated from a feeding experiment with a franciscana dolphin in captivity.","PeriodicalId":17967,"journal":{"name":"Latin American Journal of Aquatic Mammals","volume":"136 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76442549","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}
We report the case of a young coastal bottlenose dolphin (Tursiops truncatus) hooked and entangled in artisanal fishing gear on two occasions in a period of six months. In both occasions the animal managed to get rid of the gear by itself. The case occurred in the inner estuary of Gulf of Guayaquil, Ecuador. The animal survived both events, but scars remained in various parts of the body and missed fluke tips. Photographs of the individual after the events allowed to evaluate the healing process. This case demonstrated that longlines represents a threat for this population.
{"title":"Tough life: the case of a young coastal common bottlenose dolphin repeatedly entangled","authors":"F. Félix, Oscar Vázcones, Ruby Centeno, J. Romero","doi":"10.5597/00243","DOIUrl":"https://doi.org/10.5597/00243","url":null,"abstract":"We report the case of a young coastal bottlenose dolphin (Tursiops truncatus) hooked and entangled in artisanal fishing gear on two occasions in a period of six months. In both occasions the animal managed to get rid of the gear by itself. The case occurred in the inner estuary of Gulf of Guayaquil, Ecuador. The animal survived both events, but scars remained in various parts of the body and missed fluke tips. Photographs of the individual after the events allowed to evaluate the healing process. This case demonstrated that longlines represents a threat for this population.","PeriodicalId":17967,"journal":{"name":"Latin American Journal of Aquatic Mammals","volume":"6 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88308908","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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