Zoology and Ecology最新文献_第9页

Automated photogrammetric method to identify individual painted dogs (Lycaon pictus) 识别彩绘狗个体的自动摄影测量方法（Lycaon pictus）

Zoology and Ecology Pub Date : 2019-07-30 DOI: 10.35513/21658005.2019.2.5

Kanako Ake, T. Ogura, Y. Kaneko, G. Rasmussen

{"title":"Automated photogrammetric method to identify individual painted dogs (Lycaon pictus)","authors":"Kanako Ake, T. Ogura, Y. Kaneko, G. Rasmussen","doi":"10.35513/21658005.2019.2.5","DOIUrl":"https://doi.org/10.35513/21658005.2019.2.5","url":null,"abstract":"The painted dog, Lycaon pictus, has been visually identified by their tricolor patterns in surveys and whilst computerised recognition methods have been used in other species, they have not been used in painted dogs. This study compares results achieved from Hotspotter software against human recognition. Fifteen individual painted dogs in Yokohama Zoo, Japan were photographed using camera-traps and hand-held cameras from October 17–20, 2017. Twenty examinees identified 297 photos visually, and the same images were identified using Hotspotter. In the visual identification, mean accuracy rate was 61.20%, and a mean finish time was 4,840 seconds. At 90.57%, the accuracy rate for Hotspotter was significantly higher, with a mean finish time of 3,168 seconds. This highlights that visual photo-recognition may not be of value for untrained eyes, while software recognition can be useful for this species. For visual identification there was a significant difference in accuracy rates between hand-held cameras and camera-traps whereas for software identification there was no significant difference. This result shows that the accuracy of software identification may be unaffected by the type of photographic device. With software identification there was a significant difference with camera-trap height. This may be because the images of one camera-trap at a lower position became dark due to it being in a shadow.","PeriodicalId":38366,"journal":{"name":"Zoology and Ecology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42141589","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Changes in the distribution of amphipods in the Daugava River, Latvia 拉脱维亚道加瓦河两栖动物分布的变化

Zoology and Ecology Pub Date : 2019-07-30 DOI: 10.35513/21658005.2019.2.4

Jana Paidere, Aija Brakovska, Linda Bankovska, D. Gruberts

引用次数: 3

Relationships between fish length, otolith size and otolith weight in Sperata aor (Bagridae) and Labeo bata (Cyprinidae) from the Ganga River, India 印度恒河河鲈科(Bagridae)和鲤科(Labeo bata)鱼体长、耳石大小和耳石重量的关系

Zoology and Ecology Pub Date : 2019-07-30 DOI: 10.35513/21658005.2019.2.3

A. Nazir, M. A. Khan

{"title":"Relationships between fish length, otolith size and otolith weight in Sperata aor (Bagridae) and Labeo bata (Cyprinidae) from the Ganga River, India","authors":"A. Nazir, M. A. Khan","doi":"10.35513/21658005.2019.2.3","DOIUrl":"https://doi.org/10.35513/21658005.2019.2.3","url":null,"abstract":"The present study was conducted to investigate the relationships between fish length, otolith size and otolith weight. A total of 180 Sperata aor and 171 Labeo bata specimens were collected monthly during January 2016 to March 2017 from the River Ganga at the Narora site. Student’s t-test showed no significant differences in the size of right and left otoliths in the selected fish species, therefore, a single linear regression based on the left otolith was carried out. Fish length was plotted against otolith weight, otolith length and otolith height. Moreover, otolith length was plotted against otolith weight and otolith height. The linear regression model was found to fit the data well for fish length to otolith size in both selected fish species. A strong relationship between otolith length and weight was found in both species (r2 > 0.8). Furthermore, the study revealed that fish length is potentially related to otolith size and a strong relationship between fish length and otolith size exists in S. aor (mean r2 = 0.89) as compared to L. bata (mean r2 = 0.70). Such relationships should be determined for the fish species that are ecologically and socio-economically important in order to understand their trophic relationships, population dynamics and yield estimates.","PeriodicalId":38366,"journal":{"name":"Zoology and Ecology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43637450","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Nest characteristics and breeding success of Black Kites (Milvus migrans migrans) in the High Plateau (Algeria) 阿尔及利亚高原黑鸢(Milvus migrans migrans)巢穴特征及繁殖成功

Zoology and Ecology Pub Date : 2019-07-30 DOI: 10.35513/21658005.2019.2.1

Sarra Messabhia, E. Bensaci, Salah Telailia, Abderraouf Chouaib Rebbah, M. Saheb

{"title":"Nest characteristics and breeding success of Black Kites (Milvus migrans migrans) in the High Plateau (Algeria)","authors":"Sarra Messabhia, E. Bensaci, Salah Telailia, Abderraouf Chouaib Rebbah, M. Saheb","doi":"10.35513/21658005.2019.2.1","DOIUrl":"https://doi.org/10.35513/21658005.2019.2.1","url":null,"abstract":"The breeding ecology of the Black Kite Milvus migrans migrans in Algeria was first studied in 2014 and 2015 on Tarf Mountain in the semi-arid High Plateaus region. The nearest-neighbour nest distance was found to range from 130 to 550 m for colonial pairs and from 1,730 to 2,390 m for the solitary ones. All 12 monitored nests were placed on cliffs at different heights ranging from 149 to 155 m. The mean egg laying period was 15 days, and the mean clutch size was 2.83 ± 0.31 and 3 ± 00 eggs per nest in 2014 and 2015, respectively. The mean hatching success was 83% and that of fledging 75%. Only 2 nests were predated. Our results disagree with those of the previous studies that were carried out mainly in the Mediterranean basin and Asia, differing in such nest characteristics as the nearest - neighbour nest distance, cliff and nesting heights, egg laying period and hatching success. Otherwise, no consistent differences in clutch size and fledging success were revealed. Finally, we determined that Black Kites tend to build their nest on the eastern side of cliffs. However, our analysis showed no effect of nest placement on breeding parameters and success.","PeriodicalId":38366,"journal":{"name":"Zoology and Ecology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43442753","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

Emergence ecology and body size dimorphism in Sympetrum fonscolombii and S. meridionale (Odonata: Libellulidae) 丰胸交趾虫（Sympetrum foncolombii）和子午交趾虫的出现生态学和体型二态性（Odinata:Libellulidae）

Zoology and Ecology Pub Date : 2019-07-13 DOI: 10.35513/21658005.2019.1.2

Sana Hadjadji, H. Amari, Nadia Bouiedda, Amina Guebailia, Nedjwa Boucenna, B. Mayache, M. Houhamdi

{"title":"Emergence ecology and body size dimorphism in Sympetrum fonscolombii and S. meridionale (Odonata: Libellulidae)","authors":"Sana Hadjadji, H. Amari, Nadia Bouiedda, Amina Guebailia, Nedjwa Boucenna, B. Mayache, M. Houhamdi","doi":"10.35513/21658005.2019.1.2","DOIUrl":"https://doi.org/10.35513/21658005.2019.1.2","url":null,"abstract":"The study of dragonfly emergence provides insights into the understanding of their life history, ecology, and \u0000adaptation to abiotic and biotic factors. Here we investigate the emergence ecology and body size of two congeneric \u0000dragonflies (Sympetrum fonscolombii Selys, and S. meridionale Selys) in Northeast Algeria, highlighting the seasonal \u0000pattern, sex ratio at emergence, sexual size dimorphism (SSD), and vertical stratification. We found that both \u0000species, S. fonscolombii in particular, showed quite asynchronous emergence. In both species, and especially in the \u0000larger S. meridionale, sex ratio was found to be female-biased, which is in line with the hypothesis of a negative \u0000relationship between SSD and sex ratio. There was no seasonal pattern of body size observed in both species. In S. \u0000meridionale, SSD with regard to both body and wing sheath length was male-biased, while in S. fonscolombii, it was \u0000male-biased with regard to body length and female-biased with regard to wing length. Vertical stratification depended \u0000on support height (the higher the support, the higher the height of exuvia fixation) but had a complex relationship \u0000with the body size. The biological significance and implications of the vertical stratification-body size relationship \u0000are discussed.","PeriodicalId":38366,"journal":{"name":"Zoology and Ecology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42233174","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: 5

Ongoing shrinkage and fragmentation in the geographic range of the Natterjack Toad, Epidalea calamita, in Latvia and the East Baltic Region 拉脱维亚和东波罗的海地区Natterjack蟾蜍、Epidalea calamita地理范围内的持续萎缩和破碎

Zoology and Ecology Pub Date : 2019-07-13 DOI: 10.35513/21658005.2019.1.8

A. Čeirāns, M. Pupins

引用次数: 2

Diversity and ecological diagnosis of dragonflies of high-mountain temporary ponds in the Akfadou massif forest (Algeria) 阿克法杜山地森林高山临时池塘蜻蜓的多样性和生态诊断（阿尔及利亚）

Zoology and Ecology Pub Date : 2019-07-13 DOI: 10.35513/21658005.2019.1.4

Abdelmadjid Chelli, Riadh Moulai

{"title":"Diversity and ecological diagnosis of dragonflies of high-mountain temporary ponds in the Akfadou massif forest (Algeria)","authors":"Abdelmadjid Chelli, Riadh Moulai","doi":"10.35513/21658005.2019.1.4","DOIUrl":"https://doi.org/10.35513/21658005.2019.1.4","url":null,"abstract":"An Odonata study was carried out during six successive months at five high-mountain temporary ponds located in the Akfadou massif forest, northeast Algeria. These wetlands are virtually unexplored; some of these places are unknown to the general public. However, some of them appear to face numerous threats. The results obtained by this study gave us an idea of the odonatological settlement in this area. With 18 species of Odonata, this territory contains about 1/3 of the Algerian Odonata fauna, of which nine species reproduce in this forest massif. These study stations share in common three species, namely: Ischnura graellsii, Anax imperator, and Orthetrum cancellatum. These three species are omnipresent in more than 75% of the surveys and are distributed in a consistent way in various biotopes. The first species (I. graellsii) together with Lestes virens and Chalcolestes viridis dominate in numbers, accounting for more than half of the total numbers recorded. The Shannon-Weaver index and Equitability index applied to odonatological fauna reveal that Agoulmime Ikher (AI) and Agoulmime Tala Guizane (AT) ponds are the best-structured and most stable in terms of stands in this massif.","PeriodicalId":38366,"journal":{"name":"Zoology and Ecology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44016152","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: 2

Waterbirds in the panhandle of the Okavango Delta: dry season counts over two seven-year periods 奥卡万戈三角洲狭长地带的水鸟：旱季超过两个七年

Zoology and Ecology Pub Date : 2019-07-13 DOI: 10.35513/21658005.2019.1.3

G. Kopij, M. Paxton

{"title":"Waterbirds in the panhandle of the Okavango Delta: dry season counts over two seven-year periods","authors":"G. Kopij, M. Paxton","doi":"10.35513/21658005.2019.1.3","DOIUrl":"https://doi.org/10.35513/21658005.2019.1.3","url":null,"abstract":"We counted waterbirds along a fixed route in the panhandle of the Okavango River in Mahango Game Reserve in the dry season during two seven-year periods (1991–1997 and 2000–2006). Palearctic migrants represented by 11 species in 1991–1997 and nine species in 2000–2006 together composed only a small percentage of all birds recorded in both periods. The two most numerous foraging guilds were birds foraging in shallow water and those foraging in deep water. The former guild was more numerous in 2000–2006, while the latter guild was more numerous in 1991–1997. The proportion of other foraging guilds varied little between the two periods. The most numerous diet guild was piscivores, they were more numerous in 1991–1997 than in 2000–2006. If the total numbers of birds of each particular species in the years 1991–1997 were pooled and compared with those for the years 2000–2006, then highly significant changes in their numbers between these periods could be seen for 53 out of 93 waterbird species. Over the timespan 1991–2006, 12 species significantly increased in numbers while one species, the Cattle Egret, declined; seven other species showed no significant changes in abundance. The increase can be linked to the volume of water flowing through the river. While during the years 1991–1997 the total volume measured at Mohembo was 45.9 km3 (SD = 1.43), during the years 2000–2006 the volume was 60.9 km3 (SD = 1.41). Diversity was very similar during the two periods (1991–1997: S = 1.4; 2000–2006: S = 1.3), with no difference in evenness. The striking feature is that species diversity and abundance of birds was far greater than any records from other southern African rivers to date.","PeriodicalId":38366,"journal":{"name":"Zoology and Ecology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44879869","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

Insectivory characteristics of the Japanese marten (Martes melampus): a qualitative review 日本貂的昆虫象牙特征：定性综述

Zoology and Ecology Pub Date : 2019-07-13 DOI: 10.35513/21658005.2019.1.9

M. Hisano

引用次数: 2

Breeding of the Gull-billed Tern in the Sahara and an update on its distribution in Algeria 撒哈拉地区鸥嘴燕鸥的繁殖及其在阿尔及利亚分布的最新情况

Zoology and Ecology Pub Date : 2019-07-13 DOI: 10.35513/21658005.2019.1.6

A. Bouzid, A. Boucheker, Farrah Samraoui, B. Samraoui

引用次数: 3