Pub Date : 2024-07-22DOI: 10.1515/mammalia-2024-0002
Jorge A. Gallo, Laura Fasola, Agustín M. Abba
The grasslands and shrub areas of the Patagonian steppe are the most frequent habitat for the “Near Threatened” armadillo, known as pichi (Zaedyus pichiy). Dense exotic conifer plantations are replacing the steppe in Argentinean northern Patagonia. This study aimed to evaluate the effect of conifer afforestation on the occurrence and food availability in a Z. pichiy population in north-western Patagonia. Fifteen sites in the native steppe and 50 in exotic pine plantations were sampled. We recorded the number of signs of pichi’s presence and the diversity of invertebrates. Signs of Z. pichiy presence decreased in pine afforestation compared to the native steppe. Additionally, we found a decrease in the abundance, richness, diversity, and biomass of arthropods in pine plantations. Therefore, the presence of pine plantations in the steppe reduces the main food items of Z. pichiy and also eliminates the native steppe vegetation structure that provides preferred places to dig burrows. Pine monocultures do not provide a suitable habitat for Z. pichiy and may exacerbate the degradation of an already disturbed environment.
{"title":"Effect of conifer afforestation on the occurrence and food availability for Zaedyus pichiy (Xenarthra: Chlamyphoridae) in the north-western Patagonian steppe of Argentina","authors":"Jorge A. Gallo, Laura Fasola, Agustín M. Abba","doi":"10.1515/mammalia-2024-0002","DOIUrl":"https://doi.org/10.1515/mammalia-2024-0002","url":null,"abstract":"The grasslands and shrub areas of the Patagonian steppe are the most frequent habitat for the “Near Threatened” armadillo, known as pichi (<jats:italic>Zaedyus pichiy</jats:italic>). Dense exotic conifer plantations are replacing the steppe in Argentinean northern Patagonia. This study aimed to evaluate the effect of conifer afforestation on the occurrence and food availability in a <jats:italic>Z. pichiy</jats:italic> population in north-western Patagonia. Fifteen sites in the native steppe and 50 in exotic pine plantations were sampled. We recorded the number of signs of pichi’s presence and the diversity of invertebrates. Signs of <jats:italic>Z. pichiy</jats:italic> presence decreased in pine afforestation compared to the native steppe. Additionally, we found a decrease in the abundance, richness, diversity, and biomass of arthropods in pine plantations. Therefore, the presence of pine plantations in the steppe reduces the main food items of <jats:italic>Z. pichiy</jats:italic> and also eliminates the native steppe vegetation structure that provides preferred places to dig burrows. Pine monocultures do not provide a suitable habitat for <jats:italic>Z. pichiy</jats:italic> and may exacerbate the degradation of an already disturbed environment.","PeriodicalId":49892,"journal":{"name":"Mammalia","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2024-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141782279","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-07-18DOI: 10.1515/mammalia-2024-0034
Stefanie M. Rog, Pablo Sinovas
This is the first documented instance of Sri Lanka’s endemic Macaca sinica (toque macaque) foraging on invasive Annona glabra (pond apple). We observed a troop of toque macaques (∼15) consuming A. glabra in a mangrove forest in Negombo lagoon in western Sri Lanka. This behaviour highlights the need to understand species interactions in the design of effective invasive species interventions for mangrove management.
{"title":"The forbidden fruit: toque macaques (Macaca sinica) feeding on invasive pond apple (Annona glabra) in Sri Lankan mangroves","authors":"Stefanie M. Rog, Pablo Sinovas","doi":"10.1515/mammalia-2024-0034","DOIUrl":"https://doi.org/10.1515/mammalia-2024-0034","url":null,"abstract":"This is the first documented instance of Sri Lanka’s endemic <jats:italic>Macaca sinica</jats:italic> (toque macaque) foraging on invasive <jats:italic>Annona glabra</jats:italic> (pond apple). We observed a troop of toque macaques (∼15) consuming <jats:italic>A. glabra</jats:italic> in a mangrove forest in Negombo lagoon in western Sri Lanka. This behaviour highlights the need to understand species interactions in the design of effective invasive species interventions for mangrove management.","PeriodicalId":49892,"journal":{"name":"Mammalia","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2024-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141738276","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-07-17DOI: 10.1515/mammalia-2023-0013
Alfonso Balmori-de la Puente, Alfonso Balmori
In this work, we have analysed the different causes of admissions of stone martens (Martes foina), genets (Genetta genetta) and pine martens (Martes martes) in two rehabilitation centres in Castilla y León (Spain) during 32 years (1991–2022). The results indicate that the most important factor for stone martens was road kills with 227 martens (53.4 %) followed by electrocutions with 90 martens (21.2 %). From genets, 94 of them (68.6 %) were due to roadkill and 7 (5.1 %) were due to electrocution. The most important cause of admission for pine martens was road kills with 22 (88 %) and 1 (4 %) due to electrocution. Possible explanations for the observed high mortality of stone martens in electric pylons are discussed.
{"title":"Electrocutions as an important cause of mortality for a mesocarnivore","authors":"Alfonso Balmori-de la Puente, Alfonso Balmori","doi":"10.1515/mammalia-2023-0013","DOIUrl":"https://doi.org/10.1515/mammalia-2023-0013","url":null,"abstract":"In this work, we have analysed the different causes of admissions of stone martens (<jats:italic>Martes foina</jats:italic>), genets (<jats:italic>Genetta genetta</jats:italic>) and pine martens (<jats:italic>Martes martes</jats:italic>) in two rehabilitation centres in Castilla y León (Spain) during 32 years (1991–2022). The results indicate that the most important factor for stone martens was road kills with 227 martens (53.4 %) followed by electrocutions with 90 martens (21.2 %). From genets, 94 of them (68.6 %) were due to roadkill and 7 (5.1 %) were due to electrocution. The most important cause of admission for pine martens was road kills with 22 (88 %) and 1 (4 %) due to electrocution. Possible explanations for the observed high mortality of stone martens in electric pylons are discussed.","PeriodicalId":49892,"journal":{"name":"Mammalia","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141738274","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-07-17DOI: 10.1515/mammalia-2024-0054
Delgerchimeg Davaasuren, Maria Vittoria Mazzamuto, Claudia Tranquillo, Undrakhbayar Enkhbat, Bayaraa Munkhtsog, Ulam-Urnukh Bayanmunkh, Altanbagana Yunden, Jeff Dolphin, Sukhchuluun Gansukh, John Koprowski
Prey-predator interactions across time and space strongly influence many animal communities. This study unveils the first insights into the ecology of the Eurasian red squirrel (Sciurus vulgaris) in Mongolia, and specifically in Bogd Khan Mountain Strictly Protected Area. We used by-catch data obtained from camera traps to analyze activity patterns and potential interactions with mammalian predators. Red squirrels exhibited primarily diurnal activity with occasional nocturnal forays, while potential predators like foxes (Vulpes vulpes, Vulpes corsac) and martens (Martes foina, Martes zibellina) displayed cathemeral and nocturnal patterns, respectively. The diurnal Pallas’s cat (Otocolobus manul) showed the greatest activity overlap with squirrels. Suggesting predator avoidance behavior potentially mediated by olfactory cues, squirrel activity was negatively impacted by marten presence, which was in turn potentially affected by human disturbance. We highlight the need for further investigations, particularly regarding the dietary composition of Pallas’s cats in forested habitats and the broader ecological implications of human disturbance on predator–prey dynamics within this crucial conservation area.
{"title":"Eurasian red squirrels (Sciurus vulgaris) and mesocarnivores in a Mongolian protected area","authors":"Delgerchimeg Davaasuren, Maria Vittoria Mazzamuto, Claudia Tranquillo, Undrakhbayar Enkhbat, Bayaraa Munkhtsog, Ulam-Urnukh Bayanmunkh, Altanbagana Yunden, Jeff Dolphin, Sukhchuluun Gansukh, John Koprowski","doi":"10.1515/mammalia-2024-0054","DOIUrl":"https://doi.org/10.1515/mammalia-2024-0054","url":null,"abstract":"Prey-predator interactions across time and space strongly influence many animal communities. This study unveils the first insights into the ecology of the Eurasian red squirrel (<jats:italic>Sciurus vulgaris</jats:italic>) in Mongolia, and specifically in Bogd Khan Mountain Strictly Protected Area. We used by-catch data obtained from camera traps to analyze activity patterns and potential interactions with mammalian predators. Red squirrels exhibited primarily diurnal activity with occasional nocturnal forays, while potential predators like foxes (<jats:italic>Vulpes vulpes, Vulpes corsac</jats:italic>) and martens (<jats:italic>Martes foina, Martes zibellina</jats:italic>) displayed cathemeral and nocturnal patterns, respectively. The diurnal Pallas’s cat (<jats:italic>Otocolobus manul</jats:italic>) showed the greatest activity overlap with squirrels. Suggesting predator avoidance behavior potentially mediated by olfactory cues, squirrel activity was negatively impacted by marten presence, which was in turn potentially affected by human disturbance. We highlight the need for further investigations, particularly regarding the dietary composition of Pallas’s cats in forested habitats and the broader ecological implications of human disturbance on predator–prey dynamics within this crucial conservation area.","PeriodicalId":49892,"journal":{"name":"Mammalia","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141738280","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-07-17DOI: 10.1515/mammalia-2024-0035
Erika Cuellar Soto, Ernesto R. Krauczuk, Ulyses F.J. Pardiñas
Limited vouchered records exist for Cuniculus paca, the second-largest living caviomorph rodent, documenting its southernmost occurrence. Here, we introduce four new recording sites based on skulls probably discarded by local hunters, with three located in Misiones Province and the fourth marking the first supported evidence in the neighboring Corrientes Province in Argentina. The data remains inconclusive as to whether the latter location signifies a southern expansion of this rodent due to climate change or simply an overlooked population that has long been established. Regardless, these findings underscore the importance of increased fieldwork and specimen collection.
{"title":"Southernmost occurrence of Cuniculus paca (Rodentia, Cuniculidae): new Argentinean localities based on vouchers","authors":"Erika Cuellar Soto, Ernesto R. Krauczuk, Ulyses F.J. Pardiñas","doi":"10.1515/mammalia-2024-0035","DOIUrl":"https://doi.org/10.1515/mammalia-2024-0035","url":null,"abstract":"Limited vouchered records exist for <jats:italic>Cuniculus paca</jats:italic>, the second-largest living caviomorph rodent, documenting its southernmost occurrence. Here, we introduce four new recording sites based on skulls probably discarded by local hunters, with three located in Misiones Province and the fourth marking the first supported evidence in the neighboring Corrientes Province in Argentina. The data remains inconclusive as to whether the latter location signifies a southern expansion of this rodent due to climate change or simply an overlooked population that has long been established. Regardless, these findings underscore the importance of increased fieldwork and specimen collection.","PeriodicalId":49892,"journal":{"name":"Mammalia","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141738275","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-07-17DOI: 10.1515/mammalia-2023-0176
Christian S. Willisch, Katrin Bieri Willisch, Andreas Boldt, Bettina Magun, Nelson Marreros, Mark Struch, Marcel Tschan, Simone R. Pisano
Red deer populations, once extirpated in large parts of Europe, have recovered over the last century in many regions. In Switzerland, primarily inhabiting mountain forests, they have recently started to expand into human-dominated lowland landscapes. To study their habitat selection, we analyzed day- and nighttime positions of 15 GPS-collared red deer. Our results show that during daytime, all animals generally preferred forests; open land was mainly used at night. In summer and fall, some lowland individuals deviated from this pattern and used agricultural crops as daytime retreats. Human settlements were often avoided in the lowlands. Day-site selection in the lowlands occurred irrespective of the distance to trails and the probability of being accessed by humans, in contrast to the pattern observed in the mountains. At night, red deer preferred forest edges and open land. In the lowlands, human settlements were avoided. Trails and transport infrastructures had a marginal influence at night. Our study confirmed a high behavioral plasticity of red deer. The use of daytime retreats close to trails and in high-standing crops represent major extensions of their behavior. Our habitat models indicate that there is ample suitable habitat in the lowlands, which is of major relevance for their management.
{"title":"Novel insights into red deer (Cervus elaphus) habitat use and suitability in human-dominated versus near-natural landscapes","authors":"Christian S. Willisch, Katrin Bieri Willisch, Andreas Boldt, Bettina Magun, Nelson Marreros, Mark Struch, Marcel Tschan, Simone R. Pisano","doi":"10.1515/mammalia-2023-0176","DOIUrl":"https://doi.org/10.1515/mammalia-2023-0176","url":null,"abstract":"Red deer populations, once extirpated in large parts of Europe, have recovered over the last century in many regions. In Switzerland, primarily inhabiting mountain forests, they have recently started to expand into human-dominated lowland landscapes. To study their habitat selection, we analyzed day- and nighttime positions of 15 GPS-collared red deer. Our results show that during daytime, all animals generally preferred forests; open land was mainly used at night. In summer and fall, some lowland individuals deviated from this pattern and used agricultural crops as daytime retreats. Human settlements were often avoided in the lowlands. Day-site selection in the lowlands occurred irrespective of the distance to trails and the probability of being accessed by humans, in contrast to the pattern observed in the mountains. At night, red deer preferred forest edges and open land. In the lowlands, human settlements were avoided. Trails and transport infrastructures had a marginal influence at night. Our study confirmed a high behavioral plasticity of red deer. The use of daytime retreats close to trails and in high-standing crops represent major extensions of their behavior. Our habitat models indicate that there is ample suitable habitat in the lowlands, which is of major relevance for their management.","PeriodicalId":49892,"journal":{"name":"Mammalia","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141738281","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-07-17DOI: 10.1515/mammalia-2024-0017
Nayra T Rodrigues, G. Massocato, D. Kluyber, C. C. Gestich, B. H. Saranholi, P. M. Galetti Jr., A. Desbiez
Defined as the killing of a newborn individual by a conspecific, infanticide by males is widespread in mammals. Results from this paper used genetic analysis to confirm and characterize the first report of non-parental infanticide in giant armadillos. Genetic evidence demonstrates that the killer male is unrelated to the killed infant but is the father of the next offspring. This evidence supports the sexual selection hypothesis, in which infanticide is used to obtain increased access to breeding females.
{"title":"Genetic analysis brings evidence of the sexual selection hypothesis for an infanticide event in giant armadillos (Priodontes maximus)","authors":"Nayra T Rodrigues, G. Massocato, D. Kluyber, C. C. Gestich, B. H. Saranholi, P. M. Galetti Jr., A. Desbiez","doi":"10.1515/mammalia-2024-0017","DOIUrl":"https://doi.org/10.1515/mammalia-2024-0017","url":null,"abstract":"\u0000 Defined as the killing of a newborn individual by a conspecific, infanticide by males is widespread in mammals. Results from this paper used genetic analysis to confirm and characterize the first report of non-parental infanticide in giant armadillos. Genetic evidence demonstrates that the killer male is unrelated to the killed infant but is the father of the next offspring. This evidence supports the sexual selection hypothesis, in which infanticide is used to obtain increased access to breeding females.","PeriodicalId":49892,"journal":{"name":"Mammalia","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141639790","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-07-13DOI: 10.1515/mammalia-2023-0079
Fortune Ravhuanzwo, Daan J.E. Loock, Lourens H. Swanepoel
Specialist carnivores are often among the first species disappearing from transformed, human-dominated landscapes. However, some carnivore species can exploit abundant food sources in human-dominated landscapes. In this study, we investigated the diet of a specialist carnivore, the serval (Leptailurus serval), inhabiting artificial and natural landscapes surrounding a petrochemical plant in the Highveld of Mpumalanga, South Africa. From 2013 to 2018, for each year, we collected and analysed a total of 264 scat samples. We found that rodent species dominated the serval diet, while other prey items like birds, insects, and unidentified prey contributed little to the diet. In terms of biomass consumed, Otomys sp (56.94 %), Mastomys sp (19.12 %), and Rhabdomys sp (8.68 %) were the most important rodent prey. We further found that biomass consumed is only affected by species, not season or species–season interactions. Our results concur with previous studies that serval is primarily a rodent specialist and that specialisation holds even in human-altered landscapes.
{"title":"The importance of rodents to a specialist carnivore in an industrialized site","authors":"Fortune Ravhuanzwo, Daan J.E. Loock, Lourens H. Swanepoel","doi":"10.1515/mammalia-2023-0079","DOIUrl":"https://doi.org/10.1515/mammalia-2023-0079","url":null,"abstract":"Specialist carnivores are often among the first species disappearing from transformed, human-dominated landscapes. However, some carnivore species can exploit abundant food sources in human-dominated landscapes. In this study, we investigated the diet of a specialist carnivore, the serval (<jats:italic>Leptailurus serval</jats:italic>), inhabiting artificial and natural landscapes surrounding a petrochemical plant in the Highveld of Mpumalanga, South Africa. From 2013 to 2018, for each year, we collected and analysed a total of 264 scat samples. We found that rodent species dominated the serval diet, while other prey items like birds, insects, and unidentified prey contributed little to the diet. In terms of biomass consumed, <jats:italic>Otomys</jats:italic> sp (56.94 %), <jats:italic>Mastomys</jats:italic> sp (19.12 %), and <jats:italic>Rhabdomys</jats:italic> sp (8.68 %) were the most important rodent prey. We further found that biomass consumed is only affected by species, not season or species–season interactions. Our results concur with previous studies that serval is primarily a rodent specialist and that specialisation holds even in human-altered landscapes.","PeriodicalId":49892,"journal":{"name":"Mammalia","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2024-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141610255","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-07-02DOI: 10.1515/mammalia-2024-0028
Rayque de Oliveira Lanes, Carolina Pires, Bernardo R. Teixeira, Cibele R. Bonvicino
Rhipidomys is a Sigmodontinae genus with a great diversity in western Amazonia, including Rhipidomys gardneri and Rhipidomys leucodactylus. These species shared the same diploid number of 44, however, two fundamental numbers were attributed to R. leucodactylus and one to R. gardneri. A new karyotype for R. leucodactylus is described, with a diploid and fundamental number shared by other Rhipidomys species. Data confirmed three karyotypes for R. leucodactylus, only one for R. gardneri, the presence of R. leucodactylus in the Brazilian state of Acre and extend the distribution of R. gardneri to Manoel Urbano, in Acre, showing both species occurring in the high Purus River basin.
Rhipidomys是Sigmodontinae的一个属，在亚马逊河流域西部具有丰富的多样性，包括Rhipidomys gardneri和Rhipidomys leucodactylus。这两个物种的二倍体数目相同，都是 44，但是，R. leucodactylus 和 R. gardneri 分别有两个基本数目。描述了 R. leucodactylus 的新核型，其二倍体和基数与其他 Rhipidomys 物种相同。数据证实了R. leucodactylus的三个核型，而R. gardneri只有一个核型，证实了R. leucodactylus在巴西阿克里州的存在，并将R. gardneri的分布范围扩大到了阿克里州的Manoel Urbano，表明这两个物种都出现在高普鲁斯河流域。
{"title":"New findings on the karyotype and distribution of two Rhipidomys Tschudi, 1845 species (Rodentia: Sigmodontinae) from Upper Purus River","authors":"Rayque de Oliveira Lanes, Carolina Pires, Bernardo R. Teixeira, Cibele R. Bonvicino","doi":"10.1515/mammalia-2024-0028","DOIUrl":"https://doi.org/10.1515/mammalia-2024-0028","url":null,"abstract":"<jats:italic>Rhipidomys</jats:italic> is a Sigmodontinae genus with a great diversity in western Amazonia, including <jats:italic>Rhipidomys gardneri</jats:italic> and <jats:italic>Rhipidomys leucodactylus</jats:italic>. These species shared the same diploid number of 44, however, two fundamental numbers were attributed to <jats:italic>R. leucodactylus</jats:italic> and one to <jats:italic>R. gardneri</jats:italic>. A new karyotype for <jats:italic>R. leucodactylus</jats:italic> is described, with a diploid and fundamental number shared by other <jats:italic>Rhipidomys</jats:italic> species. Data confirmed three karyotypes for <jats:italic>R. leucodactylus</jats:italic>, only one for <jats:italic>R. gardneri</jats:italic>, the presence of <jats:italic>R. leucodactylus</jats:italic> in the Brazilian state of Acre and extend the distribution of <jats:italic>R. gardneri</jats:italic> to Manoel Urbano, in Acre, showing both species occurring in the high Purus River basin.","PeriodicalId":49892,"journal":{"name":"Mammalia","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2024-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141519105","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-07-01DOI: 10.1515/mammalia-2024-0007
Janneth A. Padilla-Saldívar, Roberto Sánchez-Okrucky, Arturo Romero-Tenorio, Hugo Navarro-Solano, Liliana Serrano-Barriga, María R. Arreola-Illescas, Delma N. Castelblanco-Martínez
Strandings and opportunistic sightings represent an invaluable source of information on cetacean’s biodiversity in the Mexican Caribbean. Here, we document the stranding and rescue of two pantropical spotted dolphins Stenella attenuata (mother and male calf) near Tulum (Quintana Roo, Mexico), which died without a clear diagnosis of cause of death. This case confirms the occurrence of S. attenuata, increasing the number of local aquatic mammals to 20. As most of the other small cetaceans in this region, the conservation status of the species remains undefined, and more research is needed to better understand ecological and biological aspects of its population.
搁浅和偶然目击是墨西哥加勒比海鲸类生物多样性的宝贵信息来源。在此，我们记录了两只泛热带斑纹海豚 Stenella attenuata（母海豚和雄性小海豚）在图卢姆（墨西哥金塔纳罗奥州）附近搁浅并获救的事件，这两只海豚在死因不明的情况下死亡。这一案例证实了 S. attenuata 的存在，使当地水生哺乳动物的数量增加到 20 种。与该地区的大多数其他小型鲸目动物一样，该物种的保护状况仍未确定，需要进行更多的研究，以更好地了解其种群的生态和生物学方面。
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