Tropical Zoology最新文献

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Diversity of iron cave-dwelling mygalomorph spiders from Pará, Brazil, with description of three new species (Araneae) 巴西parar<e:1>穴居铁蛛的多样性及三新种记述(蛛科)
IF 0.9 4区 生物学
Tropical Zoology Pub Date : 2017-09-26 DOI: 10.1080/03946975.2017.1367590
Rafael Fonseca-Ferreira, R. Zampaulo, J. Guadanucci
{"title":"Diversity of iron cave-dwelling mygalomorph spiders from Pará, Brazil, with description of three new species (Araneae)","authors":"Rafael Fonseca-Ferreira, R. Zampaulo, J. Guadanucci","doi":"10.1080/03946975.2017.1367590","DOIUrl":"https://doi.org/10.1080/03946975.2017.1367590","url":null,"abstract":"Mygalomorph spiders are rarely found in caves and most of the records appear as accidental or restricted to small populations. The present study took place in iron formations in Carajás region, southeastern Pará state, eastern Brazilian Amazon rainforest. Each cave was sampled twice: dry season (from May to October) and wet season (from November to April). Of the 242 caves sampled, we found mygalomorphs in 98 (40%). The survey yielded 254 specimens, 223 (87.8%) juveniles. Of the 14 species recorded, nine were represented by adults: Dolichothele tucuruiense (Guadanucci, 2007), Hapalopus aymara Perdomo, Panzera & Pérez-Miles, 2009, Acanthoscurria geniculata (CL Koch, 1841), Theraphosa blondi (Latreille, 1804), Nhandu coloratovillosus (Schmidt, 1998), Fufius minusculus Ortega, Nagahama, Motta & Bertani, 2013, and three new are species described here: Guyruita metallophila n. sp., Hapalopus serrapelada n. sp., and Idiops carajas n. sp. Five other “morphospecies” were represented by juveniles only: Ummidia sp. (Ctenizidae), Paratropis sp. (Paratropididae), Bolostromus sp. (Cyrtaucheniidae), Diplura sp. (Dipluridae), and Idiophtalma sp. (Barychelidae). The high number of juveniles suggests two alternatives: some species could be using the hypogean environment as reproductive shelter; the hypogean environment is used as a refuge by immatures. Two species appear to be troglophiles: G. metallophila and H. aymara. https://zoobank.org/urn:lsid:zoobank.org:pub:C92F29CB-4B9C-402D-8AA6-F8251DE49529.","PeriodicalId":54409,"journal":{"name":"Tropical Zoology","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2017-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/03946975.2017.1367590","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42117714","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}
引用次数: 8
The potential role of night-time lighting in attracting terrestrial insects as food for Oreochromis mossambicus and Clarias gariepinus 夜间照明对吸引陆生昆虫为食的潜在作用
IF 0.9 4区 生物学
Tropical Zoology Pub Date : 2017-09-05 DOI: 10.1080/03946975.2017.1362841
M. Rapatsa, N. Moyo
{"title":"The potential role of night-time lighting in attracting terrestrial insects as food for Oreochromis mossambicus and Clarias gariepinus","authors":"M. Rapatsa, N. Moyo","doi":"10.1080/03946975.2017.1362841","DOIUrl":"https://doi.org/10.1080/03946975.2017.1362841","url":null,"abstract":"This study investigated the potential of night-time lighting in enhancing the utilization of aerial insects by Oreochromis mossambicus and Clarias gariepinus. Six treatments L0 (Light with no fish), N0 (No light, with no fish), LT (Light with O. mossambicus), NT (No light with O. mossambicus), LC (Light with C. gariepinus) and NC (No light with C. gariepinus) were randomly assigned to aquadams and replicated three times. Two hundred O. mossambicus (60 ± 0.6 g) and 100 C. gariepinus (90 ± 0.8 g) were stocked to assigned aquadams. Two other treatments designated FT (O. mossambicus fed on pellets) and FC (C. gariepinus fed on pellets), were added. SGR was higher (0.31 g/day) in O. mossambicus subjected to night-time lighting than those that were not (0.05 g/day). C. gariepinus under the night-time lighting also had a higher SGR (0.30 g/day) than the ones that were not (0.26 g/day). However, in both species the growth rate was lower when compared to those fed on commercial pellets. Oreochromis mossambicus benefited more from night-time lighting. The most abundant aerial insects were moths and beetles. The serial slaughter method was used to determine the gastric evacuation rate of moths and beetles in O. mossambicus and C. gariepinus. Moths were evacuated faster (−0.235) than beetles (−0.108) in O. mossambicus. In C. gariepinus, the gastric evacuation of moths was also faster (−0.40) than beetles (−0.36). This implies digestion efficiency was higher in moths than beetles. Water physico-chemical variables were analysed once a week and they were not affected by night-time lighting.","PeriodicalId":54409,"journal":{"name":"Tropical Zoology","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2017-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/03946975.2017.1362841","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48213590","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}
引用次数: 4
Description of two new species of Xiphocentron Brauer, 1870 (Trichoptera: Xiphocentronidae) from southeastern Brazil 巴西东南部剑蛾属二新种记述(毛翅目:剑蛾科)
IF 0.9 4区 生物学
Tropical Zoology Pub Date : 2017-08-22 DOI: 10.1080/03946975.2017.1362867
I. Rocha, L. L. Dumas, J. Nessimian
{"title":"Description of two new species of Xiphocentron Brauer, 1870 (Trichoptera: Xiphocentronidae) from southeastern Brazil","authors":"I. Rocha, L. L. Dumas, J. Nessimian","doi":"10.1080/03946975.2017.1362867","DOIUrl":"https://doi.org/10.1080/03946975.2017.1362867","url":null,"abstract":"In addition to the six species of Xiphocentron Brauer, 1870 currently recorded in Brazil, two new species of X. (Antillotrichia) are described and illustrated in this work: X. (Antillotrichia) acqualume n. sp. and X. (Antillotrichia) jaguare n. sp. Caddisflies in the genus Xiphocentron usually present diurnal activity and are not readily attracted to lights. However, all species included here were collected using light traps during nighttime. The new species can be easily distinguished by having a small cell enclosing the nigma on the forewing. The specimens were collected in the Parque Nacional da Serra da Canastra, a significant mountain range located in the state of Minas Gerais, southeastern Brazil. http://zoobank.org/urn:lsid:zoobank.org:pub:3DBCFECD-7CBD-4A80-9A3C-9C2FCD8FCEA1","PeriodicalId":54409,"journal":{"name":"Tropical Zoology","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2017-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/03946975.2017.1362867","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48643327","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}
引用次数: 3
Colony site characteristics of sympatric breeding tern species on the Mond Islands, the Persian Gulf 波斯湾蒙德群岛同域繁殖燕鸥种群的栖地特征
IF 0.9 4区 生物学
Tropical Zoology Pub Date : 2017-08-18 DOI: 10.1080/03946975.2017.1361199
F. H. Tayefeh, M. Zakaria, H. Amini, R. Ghayoumi, A. Khaleghizadeh
{"title":"Colony site characteristics of sympatric breeding tern species on the Mond Islands, the Persian Gulf","authors":"F. H. Tayefeh, M. Zakaria, H. Amini, R. Ghayoumi, A. Khaleghizadeh","doi":"10.1080/03946975.2017.1361199","DOIUrl":"https://doi.org/10.1080/03946975.2017.1361199","url":null,"abstract":"We have investigated characteristics of colony site of three sympatric breeding tern species on small islands of a subtropical region, the Persian Gulf. The three most populous ground-nesting waterbird species – Bridled Tern Onychoprion anaethetus, Lesser Thalasseus bengalensis and Greater Thalasseus bergii Crested Terns – were studied during the 2009–2011 breeding seasons. The average area size of mixed colonies was 454 m2. The density of nests of the Bridled Tern was 846 nests/ha. The proportion of the number of nests in a mixed colony for Lesser Crested Tern (5546 nests) was approximately 10-fold compared to the Greater Crested Tern (542 nests). The density of Bridled Tern nests/ha was significantly higher in areas with 50–75% vegetation cover (>1200 nests/ha) than in areas of <5% vegetation cover (72–105 nests/ha) (p < 0.05). Mixed colonies of the Lesser and Greater Crested Terns were located on unvegetated land, at an average distance of 4.1 m to vegetation, and on sandy soil (79.4% on average) and above high spring tide water lines (0.59 m on average). There were more potential nesting areas than occupied areas for the mixed colonies of the Lesser and Greater Crested Terns, indicated that they did not face nest site limitation. https://zoobank.org/urn:lsid:zoobank.org:pub:7523ABA7-45E1-4067-8EF7-557E65EC8249","PeriodicalId":54409,"journal":{"name":"Tropical Zoology","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2017-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/03946975.2017.1361199","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47969456","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}
引用次数: 1
Colour vision in Finlayson’s squirrel (Callosciurus finlaysonii): is conspicuous pelage colour useful for species recognition? 芬尼松松鼠的色觉:明显的皮毛颜色对物种识别有用吗?
IF 0.9 4区 生物学
Tropical Zoology Pub Date : 2017-07-03 DOI: 10.1080/03946975.2017.1345471
N. Tamura, Y. Fujii, Phadet Boonkhaw, Umphornpimon Prayoon, Budsabong Kanchanasaka
{"title":"Colour vision in Finlayson’s squirrel (Callosciurus finlaysonii): is conspicuous pelage colour useful for species recognition?","authors":"N. Tamura, Y. Fujii, Phadet Boonkhaw, Umphornpimon Prayoon, Budsabong Kanchanasaka","doi":"10.1080/03946975.2017.1345471","DOIUrl":"https://doi.org/10.1080/03946975.2017.1345471","url":null,"abstract":"Finlayson’s squirrel, Callosciurus finlaysonii, is distributed in lowland forests throughout South-East Asia. Its pelage colour is conspicuous and polymorphic (red, black, white and a mixture of these colours), which is characteristic of the species, with 16 subspecies described based on pelage colour patterns. Two closely related species, the brown C. erythraeus and the orange C. caniceps, are also distributed throughout the region. To examine whether the conspicuous pelage colour is a visual clue for species/subspecies discrimination, we experimentally assessed the colour vision of C. finlaysonii. Optically measured pelage colours of the dorsal body differed greatly among seven subspecies of C. finlaysonii and also differed among the three species of the region. Colour vision tests revealed that C. finlaysonii can discriminate the colour of conspecific white, black, and red pelages from the orange pelages of C. caniceps. They can also discriminate the brown pelages of C. erythraeus and conspecific white and black pelages, but they cannot discriminate between the brown and red pelages because they have dichromatic colour vision. White, black and orange pelage colours could be useful clues for species/subspecies recognition in Callosciurus.","PeriodicalId":54409,"journal":{"name":"Tropical Zoology","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2017-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/03946975.2017.1345471","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45430217","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}
引用次数: 5
Cladistic analysis and evolutionary relationships of Xylocopa Latreille, 1802, subgenus Xylocopoides Michener, 1954, a New World lineage of large carpenter bees (Insecta: Hymenoptera: Apidae) 大型木蜂新系Xylocopa Latreille, 1802, Xylocopoides Michener亚属,1954的枝源分析及进化关系(昆虫亚目:膜翅目:蜂科)
IF 0.9 4区 生物学
Tropical Zoology Pub Date : 2017-07-03 DOI: 10.1080/03946975.2017.1357296
J. Mawdsley
{"title":"Cladistic analysis and evolutionary relationships of Xylocopa Latreille, 1802, subgenus Xylocopoides Michener, 1954, a New World lineage of large carpenter bees (Insecta: Hymenoptera: Apidae)","authors":"J. Mawdsley","doi":"10.1080/03946975.2017.1357296","DOIUrl":"https://doi.org/10.1080/03946975.2017.1357296","url":null,"abstract":"Results of a cladistic analysis of the five currently recognized species of the genus Xylocopa Latreille, 1802, subgenus Xylocopoides Michener, 1954, are reported. Twenty adult morphological characters were coded for the five species of subgenus Xylocopoides, plus two outgroup species from the related subgenus Xylocopa Latreille, 1802. The resulting taxon-character matrix was analyzed with the “TNT” computer software program and a single most parsimonious tree of 21 steps was recovered. Monophyly of subgenus Xylocopoides relative to the outgroup species in subgenus Xylocopa is confirmed. Characters used to establish the subgenus Calloxylocopa Hurd & Moure, 1963, are derived character states in the single species X. tenuata Smith, 1874, and thus Calloxylocopa is maintained in synonymy with subgenus Xylocopoides. Within Xylocopoides, X. tenuata is the sister species to the four other species of the subgenus. Xylocopa cyanea Smith, 1874, and X. californica Cresson, 1864, are sister species, while X. pallidiscopa Hurd, 1961, and X. virginica (Linnaeus, 1771), are also sister species, suggesting the possibility of a Mexican origin for the common and widespread Nearctic species X. virginica. The male of X. pallidiscopa is described for the first time and an identification key that includes both sexes of all species of Xylocopoides is presented.","PeriodicalId":54409,"journal":{"name":"Tropical Zoology","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2017-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/03946975.2017.1357296","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42985641","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}
引用次数: 0
First record of the genus Sacculogalumna (Acari: Oribatida: Galumnidae) from the Philippines, with description of a new species 菲律宾袋柱藻属的首次记录(Acari:Oribatida:柱柱藻科),并对一新种进行了描述
IF 0.9 4区 生物学
Tropical Zoology Pub Date : 2017-07-03 DOI: 10.1080/03946975.2017.1345512
S. Ermilov, L. CORPUZ-RAROS
{"title":"First record of the genus Sacculogalumna (Acari: Oribatida: Galumnidae) from the Philippines, with description of a new species","authors":"S. Ermilov, L. CORPUZ-RAROS","doi":"10.1080/03946975.2017.1345512","DOIUrl":"https://doi.org/10.1080/03946975.2017.1345512","url":null,"abstract":"The oribatid mite genus Sacculogalumna (Oribatida: Galumnidae) is recorded in the Philippines for the first time. A new species, S. samarensis n. sp., is described from secondary forest litter in the Western and Eastern Samar Provinces in Samar Island. It differs from S. saccularis and S. suiyangensis in having pointed rostrum, setiform bothridial setae, reticulate pteromorphs, long and thickened adanal setae ad1 and ad2 and one seta on anterior edges of genital plates, by the location of lamellar setae between lamellar lines, and the absence of postanal porose area, and by the medially interrupted dorsosejugal furrow. The inclusion of the new species in Sacculogalumna is proved, and an identification key to known species of the genus is given. http://zoobank.org/urn:lsid:zoobank.org:pub:4D40D41A-EF5C-423D-AAB3-857C16B10BE8","PeriodicalId":54409,"journal":{"name":"Tropical Zoology","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2017-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/03946975.2017.1345512","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44384831","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}
引用次数: 1
Differences between anophthalmic and aphenopsian beetles: evidences from larvae of Chinese species 无眼球甲虫和无眼球甲虫的差异:来自中国物种幼虫的证据
IF 0.9 4区 生物学
Tropical Zoology Pub Date : 2017-04-27 DOI: 10.1080/03946975.2017.1301629
Xiao-Zhu Luo, Haomin Yin, Sunbin Huang, M. Tian
{"title":"Differences between anophthalmic and aphenopsian beetles: evidences from larvae of Chinese species","authors":"Xiao-Zhu Luo, Haomin Yin, Sunbin Huang, M. Tian","doi":"10.1080/03946975.2017.1301629","DOIUrl":"https://doi.org/10.1080/03946975.2017.1301629","url":null,"abstract":"Larval morphology plays an important role in taxonomy and phylogeny construction. Larvae of three hypogean Trechini species, representing aphenopsian, semi-aphenopsian and anophthalmic, respectively, are described and illustrated from China. In general, primary setae were identified according to classical theory established by Bousquet and Goulet. Main larval morphological characteristics of them provide evidences between aphenopsian and anophthalmic species. The Dongodytes troglodytes Tian, Yin & Huang, 2014 (a typical aphenopsian) larva is distinct from Guizhaphaenops lipsorum Deuve, 1999 and Libotrechus nishikawai Uéno, 1998 by following characteristics: (1) anterior margin of nasale is less protruding, relatively smooth and teeth-lacking (versus distinctly toothed in G. lipsorum and L. nishikawai); (2) hypertrophied abdomen (versus slender in G. lipsorum and L. nishikawai); (3) short and stout pygidium (versus relatively slender in G. lipsorum and L. nishikawai). These major differences above may suggest various larval adaptation degrees of the cave-strictly trechine beetles to the subterranean habitats.","PeriodicalId":54409,"journal":{"name":"Tropical Zoology","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2017-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/03946975.2017.1301629","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45325854","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}
引用次数: 0
Habitat modification and alpha-beta diversity in trap nesting bees and wasps (Hymenoptera: Aculeata) in southern Brazil 巴西南部捕巢蜂和胡蜂(膜翅目:针叶蜂)的生境改造和α - β多样性
IF 0.9 4区 生物学
Tropical Zoology Pub Date : 2017-03-31 DOI: 10.1080/03946975.2017.1301628
Jucélia Iantas, Franciélli Cristiane Gruchowski Woitowicz, Maria Luisa Tunes Buschini
{"title":"Habitat modification and alpha-beta diversity in trap nesting bees and wasps (Hymenoptera: Aculeata) in southern Brazil","authors":"Jucélia Iantas, Franciélli Cristiane Gruchowski Woitowicz, Maria Luisa Tunes Buschini","doi":"10.1080/03946975.2017.1301628","DOIUrl":"https://doi.org/10.1080/03946975.2017.1301628","url":null,"abstract":"The global decline in biodiversity has been mainly attributed to the expansion of agricultural areas that transform continuous forest ecosystems into mosaic landscapes of simple agricultural and natural forest fragments. Considering this, the objective of this research was to evaluate if habitat modification affects trap nesting bees and wasps richness and abundance. An assemblage of bees and wasps that nest in pre-existing cavities was studied. The tested hypothesis was that species composition, richness and evenness are affected with habitat modification. Trap nests with different diameters were used to capture these insects in forests and in organic fields in Southern Brazil. Species composition in these areas was different, which led to the acceptance of the hypothesis that it is affected with habitat modification. The opposite occurred with alpha diversity because there was no significant difference between the richness of these areas. The most abundant genus, both in the forest areas and in the growing areas, was Trypoxylon, suggesting that the degree of impact on the Araucaria forest fragments is one of the factors that makes the diversity of these areas similar (in addition to the organic fields) since wasps of this genus usually occur in impacted areas.","PeriodicalId":54409,"journal":{"name":"Tropical Zoology","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2017-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/03946975.2017.1301628","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49146165","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}
引用次数: 10
Biology and behavior of Eigenmannia vicentespelaea, a troglobitic electric fish from Brazil (Teleostei: Gymnotiformes: Sternopygidae): a comparison to the epigean species, E. trilineata, and the consequences of cave life 巴西穴居电鱼特征鱼的生物学和行为(Teleostei:裸子形目:胸骨鱼科):与上古物种trilineata的比较,以及洞穴生活的后果
IF 0.9 4区 生物学
Tropical Zoology Pub Date : 2017-03-31 DOI: 10.1080/03946975.2017.1301141
M. E. Bichuette, E. Trajano
{"title":"Biology and behavior of Eigenmannia vicentespelaea, a troglobitic electric fish from Brazil (Teleostei: Gymnotiformes: Sternopygidae): a comparison to the epigean species, E. trilineata, and the consequences of cave life","authors":"M. E. Bichuette, E. Trajano","doi":"10.1080/03946975.2017.1301141","DOIUrl":"https://doi.org/10.1080/03946975.2017.1301141","url":null,"abstract":"We compared the behavior, including spatial distribution, reaction to stimuli, activity phases, and agonistic interactions, as well as diet and reproduction, of the troglobitic Eigenmannia vicentespelaea and that of its epigean relative, E. trilineata, both from São Domingos karst area, central Brazil. We utilized ad libitum underwater observations, complemented by physicochemical water variables, habitat descriptions, and collections of specimens. Differences in behavioral aspects include the absence of cryptobiotic habits and an extended spatial and temporal activity in E. vicentespelaea that were not present in E. trilineata, and the foraging angle, which was approximately 30° in E. vicentespelaea and 90° in E. trilineata. The agonistic behaviors recorded for the troglobitic E. vicentespelaea could be related to the preservation of a character state that is present in its epigean relatives. Eigenmannia vicentespelaea and E. trilineata might be considered benthophagous invertivores, similar to other Eigenmannia electric fishes, with no evidence of seasonality in the volume and diversity of prey items in their stomachs, suggesting that there is a food spectrum common to the two species. Both epigean and troglobitic Eigenmannia fish from Goiás reproduce during the dry season, with no indication of reproductive peaks during this period.","PeriodicalId":54409,"journal":{"name":"Tropical Zoology","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2017-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/03946975.2017.1301141","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46713100","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}
引用次数: 6
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