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The morphohistology and fine anatomy of the olfactory organ in pabda catfish, Ompok bimaculatus (Bloch, 1794) 帕达鲶鱼嗅觉器官的形态组织学和精细解剖(Bloch, 1794)
Our Nature Pub Date : 2020-12-30 DOI: 10.3126/ON.V18I1.34237
S. K. Ghosh
{"title":"The morphohistology and fine anatomy of the olfactory organ in pabda catfish, Ompok bimaculatus (Bloch, 1794)","authors":"S. K. Ghosh","doi":"10.3126/ON.V18I1.34237","DOIUrl":"https://doi.org/10.3126/ON.V18I1.34237","url":null,"abstract":"The organization of the olfactory system in Ompok bimaculatus (Siluriformes: Siluridae) were investigated by histological and ultrastructural analysis. The nasal chamber was totally engrossed by a boat shaped elongated olfactory rosette with numerous lamella. Histomicroscopically, each lamella was comprised of central core bounded on both sides by the cellular elements of olfactory epithelium. The central core was composed of thick connective tissue, nerve fibres and blood capillaries. The cellular components of the olfactory epithelium were identified based on their staining vigour, architecture, structural characteristics and surface features. The sensory epithelium contained morphologically recognizable ciliated, microvillous and rod receptor neurons. Labyrinth cells, scattered lymphatic cells, secretory mucous cells, stratified epithelial cells bearing microfolds and condensed ciliated supporting cells were observed in the indifferent epithelia. The basal cells were submerged in the deeper zone of mucosa above the basal lamina. Different sensory and nonsensory cells of the olfactory lining were associated with chemical stimulation of the fish studied. This species acquires a well developed olfactory sense for exploring the aquatic environment and able to determine the chemical changes in the surroundings.","PeriodicalId":19905,"journal":{"name":"Our Nature","volume":"39 1","pages":"10-15"},"PeriodicalIF":0.0,"publicationDate":"2020-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86415221","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
Spatio-temporal variation of fish assemblages in Babai River of Dang district, Province No. 5, Nepal 尼泊尔第五省党区巴贝河鱼类群落的时空变化
Our Nature Pub Date : 2019-12-31 DOI: 10.3126/on.v17i1.33988
Punam G.C, Jash Hang Limbu
{"title":"Spatio-temporal variation of fish assemblages in Babai River of Dang district, Province No. 5, Nepal","authors":"Punam G.C, Jash Hang Limbu","doi":"10.3126/on.v17i1.33988","DOIUrl":"https://doi.org/10.3126/on.v17i1.33988","url":null,"abstract":"Spatial and temporal variation of fish assemblages were investigated seasonally from October 2018 to May 2019. Fish assemblages were agglomerated with environmental variables both to spatial and temporal scales. Water temperature, dissolved Oygen, free carbon-dioxide, pH and water velocity of water of each site were measured. Based on analysis of similarities (ANOSIM), fish assemblages were significantly different in spatial variation but not in temporal variation. A total of 1,024 individuals belonging to 5 orders, 9 families and 15 genera and 24 species were collected. The dominated species were Puntius sophore, followed by P. terio, P. ticto and Barilius bendelisis. The Redundancy Analysis (RDA) vindicated that environmental variables of water temperature, pH, water velocity and free carbon-dioxide were found to be contributed variables to shape the fish assemblage structure of Babai River. The cluster analysis delineated that similarity between fish species decreases as the distance of sites increased.","PeriodicalId":19905,"journal":{"name":"Our Nature","volume":"12 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74450628","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
Food and feeding behaviours of Spotfin Swamp Barb Puntius sophore (Hamilton, 1822) of Singhiya River, Biratnagar Biratnagar Singhiya河Spotfin Swamp Barb Puntius sopore的食物和摄食行为(Hamilton, 1822)
Our Nature Pub Date : 2019-12-31 DOI: 10.3126/on.v17i1.33989
Anjali Risal, S. Shrestha, V. K. Mahaseth
{"title":"Food and feeding behaviours of Spotfin Swamp Barb Puntius sophore (Hamilton, 1822) of Singhiya River, Biratnagar","authors":"Anjali Risal, S. Shrestha, V. K. Mahaseth","doi":"10.3126/on.v17i1.33989","DOIUrl":"https://doi.org/10.3126/on.v17i1.33989","url":null,"abstract":"The present work attempt to present a novel approach about the food and feeding habits of Puntius sophore collected from Singhiya River, Biratnagar. For the study 120 specimens were collected on the monthly basis from March to August 2019, direct from the river with the help of local fisherman. On the basis of percentage of occurrence of gut content analysis the most preferred food item was Green algae (40.6%) followed by diatoms (16.10%), crustaceans (13.50%), protozoan (9.20%), detritus and debris (8.40%), insect larva (7.70%) and rotifers (4.50%). Relative gut length was the lowest at size 4.4-5.1 cm SL and the highest  value at size 9.3-10 cm SL. Gastro somatic index was highest peak at the size of 4.4-5.1 cm SL, which indicate the voracious nature of fish at smaller size. The standard length and body weight show a positively significant with alimentary canal length (r=0.878) and alimentary canal weight (r=0.86.4), respectively. The food and feeding behavior of this fish showed that it is omnivores in nature.","PeriodicalId":19905,"journal":{"name":"Our Nature","volume":"53 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83095585","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
Voice mimicry exhibited by Grey-sided Laughingthrush Garrulax caerulatus (Hodgson, 1836) in Phulchoki Mountain, an important bird area, central Nepal 灰边笑鸫Garrulax caerulatus (Hodgson, 1836)在尼泊尔中部重要鸟类区Phulchoki山所表现的声音模仿
Our Nature Pub Date : 2019-12-31 DOI: 10.3126/on.v17i1.34004
H. S. Baral
{"title":"Voice mimicry exhibited by Grey-sided Laughingthrush Garrulax caerulatus (Hodgson, 1836) in Phulchoki Mountain, an important bird area, central Nepal","authors":"H. S. Baral","doi":"10.3126/on.v17i1.34004","DOIUrl":"https://doi.org/10.3126/on.v17i1.34004","url":null,"abstract":"This paper informs Grey-sided Laughingthrush voice mimicking behaviour recorded at different places and different situations within thick forests, similar to other voice mimicking bird species.","PeriodicalId":19905,"journal":{"name":"Our Nature","volume":"72 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90592367","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
Length-Weight Relationship of Longtail Hillstream catfish Olyra longicaudata (McClelland, 1842) 长尾山溪鲶鱼Olyra longicaudata的长度-重量关系(McClelland, 1842)
Our Nature Pub Date : 2019-12-31 DOI: 10.3126/on.v17i1.33990
S. Shrestha, Anjali Risal, J. Shrestha
{"title":"Length-Weight Relationship of Longtail Hillstream catfish Olyra longicaudata (McClelland, 1842)","authors":"S. Shrestha, Anjali Risal, J. Shrestha","doi":"10.3126/on.v17i1.33990","DOIUrl":"https://doi.org/10.3126/on.v17i1.33990","url":null,"abstract":"The present study reports the length weight relationshipof Olyralongicaudata from Chisang River, Nepal. Study was carried out in 30 fishes collected from April 2019 to Jul 2019. The body weight ranged from 0.8 to 5.2 g and total length from 6.1 to 13.4 cm. Regression analysis was done to analyzed the data. The growth performance of length-weight relationship is found to be highly significant (r=0.936). The fish was found to show isometric growth pattern with exponential value (b) equal to 2.5115.","PeriodicalId":19905,"journal":{"name":"Our Nature","volume":"94 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83565636","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
Potential substrates for periphyton enhancement in Carp-SIS polyculture 鲤鱼- sis复合培养中增强外生体的潜在底物
Our Nature Pub Date : 2018-12-31 DOI: 10.3126/ON.V16I1.21559
S. Rai, K. Gharti, M. Shrestha, R. Ranjan, J. Diana, H. Egna
{"title":"Potential substrates for periphyton enhancement in Carp-SIS polyculture","authors":"S. Rai, K. Gharti, M. Shrestha, R. Ranjan, J. Diana, H. Egna","doi":"10.3126/ON.V16I1.21559","DOIUrl":"https://doi.org/10.3126/ON.V16I1.21559","url":null,"abstract":"A field trial was carried out to test performance of four locally available substrates (split bamboo, whole bamboo, banana midrib and plastic bottle) for periphyton enhancement in farmer's ponds at Seri and Nandapur in Nawalparasi district for 7 months. Six carp species were stocked at 15000 fish/hectare and SIS at unrecorded densities. Carp was fed with rice bran and mustard oil cake at 1.5% BW while grass carp was fed with grass and banana leaves at 50% BW. There was no significant effect of substrates on growth and production of carp. Combined NFY was 19% higher in plastic bottle ponds than control ponds, while NFY of SIS was 50% higher in banana midrib ponds than control and other substrate ponds. FCR was significantly better (P<0.05) in split bamboo ponds than control ponds. Banana midrib decayed fast and was replaced 3-4 times during experimental period while plastic bottles performed better in terms of production and profit.","PeriodicalId":19905,"journal":{"name":"Our Nature","volume":"71 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84170524","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
Effect of disturbance on plant species diversity in moist tropical forest of eastern Nepal 干扰对尼泊尔东部潮湿热带森林植物物种多样性的影响
Our Nature Pub Date : 2018-12-31 DOI: 10.3126/ON.V16I1.21558
T. Gautam, T. Mandal
{"title":"Effect of disturbance on plant species diversity in moist tropical forest of eastern Nepal","authors":"T. Gautam, T. Mandal","doi":"10.3126/ON.V16I1.21558","DOIUrl":"https://doi.org/10.3126/ON.V16I1.21558","url":null,"abstract":"Species diversity is a key factor for the stability of ecosystems but the increasing disturbances in tropical forests resulted in the shrinkage of biological diversity. This study was conducted in undisturbed and disturbed stands of Sal (Shorea robusta Gaertn.) dominated moist tropical forest of Sunsari district, eastern Nepal in order to understand the herb, shrub and tree diversity. Present study reported the 47, 16 and 60 species of herbs, shrubs and trees, respectively. The species richness and the Shannon–Wiener index for tree species were higher in undisturbed forest (9.11 and 3.08, respectively), while the Simpson’s index (index of dominance) was higher in disturbed forest (0.11).  On the other hand, reverse case was found for shrubs and herbs where species richness and Shannon–Wiener index were higher but index of dominance was lower in disturbed forest. Changes in species diversity pattern reflect the effect of disturbance.","PeriodicalId":19905,"journal":{"name":"Our Nature","volume":"30 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85450309","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
Branchial muscles of a Hill-stream Cyprinid fish Neolissochilus hexagonolepis (McClelland,1839) 山溪鲤科鱼Neolissochilus hexagonolepis鳃肌(McClelland,1839)
Our Nature Pub Date : 2018-12-31 DOI: 10.3126/ON.V16I1.22125
Jawan Tumbahangfe, B. R. Subba, A. Prasad
{"title":"Branchial muscles of a Hill-stream Cyprinid fish Neolissochilus hexagonolepis (McClelland,1839)","authors":"Jawan Tumbahangfe, B. R. Subba, A. Prasad","doi":"10.3126/ON.V16I1.22125","DOIUrl":"https://doi.org/10.3126/ON.V16I1.22125","url":null,"abstract":"Different branchial muscles associated with the gill arches and gill filaments in a hill-stream cyprinid fish Neolissochilus hexagonolepis have been studied. The main branchial muscles observed are the constrictors branchiales, levatores arcuum branchialium epiarcualia obliqui, epiarcualia recti, subarcualia obliqui, subarcualia recti and subarcualia transversi. In the general plan the branchial muscles of N. hexagonolepis show similarity with those of other cyprinid fishes. However, the fish bears three pairs of coracobranchiales, common to cyprinid fishes.","PeriodicalId":19905,"journal":{"name":"Our Nature","volume":"11 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89178894","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
Ethnobotanical study of plants used by Thami community in Ilam District, eastern Nepal 尼泊尔东部伊拉姆地区塔米族使用植物的民族植物学研究
Our Nature Pub Date : 2018-12-31 DOI: 10.3126/ON.V16I1.22123
Krishna Ram Bhattarai
{"title":"Ethnobotanical study of plants used by Thami community in Ilam District, eastern Nepal","authors":"Krishna Ram Bhattarai","doi":"10.3126/ON.V16I1.22123","DOIUrl":"https://doi.org/10.3126/ON.V16I1.22123","url":null,"abstract":"An ethnobotanical survey was carried out on the utilization of plants by Thami communities in Gorkhe, Jogmai and Nayabazar areas of Ilam by interviewing traditional herbalists and different age groups of men and women in June 2016. A total of 30 plants belonging to 24 families and 29 genera have been documented. These plants were used for food, fodder, firewood, medicine and in rituals. The documented medicinal plants were used to treat various human ailments of 12 categories; with the highest number of species being used for gastro-intestinal disorders (15 spp.) followed by ENT problems (14 spp.).  Most of the medicines were prepared from underground parts in the form of paste and used orally. Informant Consensus Factor (Fic) ranges from 0.6 to 0.9 with an average of 0.82. Dermatological disorders have the highest Fic (0.90) and other categories have the lowest (0.6). Aconitum palmatum, Begonia picta, Bergenia ciliata, Astilbe rivularis, Swertia chirayita, Drymaria cordata and Remusatia pumila have the highest fidelity level (100% each) and Galium asperifolium has the lowest FL (16%). According to the use value, Swertia chirayita (UV=2.83) was the most important with uses against 6 ailments and Hypericum cordifolium has the least (UV=0.08), used in only one ailment. A variation in ethnobotanical knowledge was found according to age, gender and occupation in this community.","PeriodicalId":19905,"journal":{"name":"Our Nature","volume":"44 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80841278","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: 18
Phytosociology of temperate forest at Tinjure-Milke-Jaljale (TMJ) area, Nepal 尼泊尔Tinjure-Milke-Jaljale (TMJ)地区温带森林的植物社会学
Our Nature Pub Date : 2018-12-31 DOI: 10.3126/ON.V16I1.22133
B. Niroula, S. Rai
{"title":"Phytosociology of temperate forest at Tinjure-Milke-Jaljale (TMJ) area, Nepal","authors":"B. Niroula, S. Rai","doi":"10.3126/ON.V16I1.22133","DOIUrl":"https://doi.org/10.3126/ON.V16I1.22133","url":null,"abstract":"Tinjure-Milke-Jaljale (TMJ) Conservation Area (Lat. 27°6ʹ57ʺ-27°30ʹ28ʺ N, Long. 87°19ʹ46ʺ -87°38ʹ14ʺ E; alt. 1700-5000 m; area 585.26 km2) lies between Arun and Tamor rivers in eastern Nepal. This area is popular for Rhododendron, the national flower of Nepal, and has been recognized by “The capital of Rhododendron”.","PeriodicalId":19905,"journal":{"name":"Our Nature","volume":"12 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84904005","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
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