Estimation of genetic variation in closely related cycad species in Ceratozamia (Zamiaceae: Cycadales) using RAPDs markers [0.03%]
利用随机扩增多态DNA(RAPD)标记估计桑科苏铁属近缘种的遗传变异
Miguel A Pérez-Farrera,Andrew P Vovides,Dolores González et al.
Miguel A Pérez-Farrera et al.
The Ceratozamia norstogii complex from Southern Mexico is made up of four closely related taxa and occurs in similar habitats (Quercus forest). All have linear-lanceolate leaflets with great similarity between them, especially in juvenile s...
Oocyte distribution within and between ovary lobes is largely homogeneous in Lachnolaimus maximus (Perciformes: Labridae) [0.03%]
隆头鱼科鱼类大斑裸颊鱼卵母细胞在卵巢叶内外的分布是均匀的
Virginia Elena Nóh Quiñones,Julián René Torres Villegas,Thierry Brulé et al.
Virginia Elena Nóh Quiñones et al.
Studies of fish reproductive biology often involve quantitative estimates based on histological sections of the ovaries. Prior characterization of gonad oocyte distribution patterns in females is fundamental to these studies. Heterogeneous ...
[Ants’ higher taxa as surrogates of species richness in a chronosequence of fallows, old-grown forests and agroforestry systems in the Eastern Amazon, Brazil] [0.03%]
巴西东部亚马逊地区弃耕地、老龄林地和农林业系统中蚂蚁高分类单元作为物种丰富度的替代指标
Jhonatan Andrés Muñoz Gutiérrez,Guillaume Xavier Roussea,Joudellys Andrade-Silva et al.
Jhonatan Andrés Muñoz Gutiérrez et al.
Deforestation in Amazon forests is one of the main causes for biodiversity loss worldwide. Ants are key into the ecosystem because act like engineers; hence, the loss of ants’ biodiversity may be a guide to measure the loss of essential fu...
Divergent predation environment between two sister species of livebearing fishes (Cyprinodontiformes: Poeciliidae) predicts boldness, activity, and exploration behavior [0.03%]
两种胎生鱼姐妹种间的捕食者环境差异预测了它们的胆怯、活跃和探索行为
David A Money,Spencer J Ingley,Jerald B Johnson
David A Money
Predators can influence a variety of prey traits, including behavior. Traits such as boldness, activity rate, and tendency to explore can all be shaped by predation risk. Our study examines the effects of predation on these behaviors by con...
Reproductive cycle of the endemic and threatened fish Puntius shalynius (Cypriniformes: Cyprinidae) in Meghalaya, India [0.03%]
印度梅加拉亚邦濒危特有鱼Puntius shalynius（鲤形目：鲤科）的繁殖周期
Maisnam Manorama,Sunkam NarayanaIyengar Ramanujam
Maisnam Manorama
Puntius shalynius is a highly endemic freshwater minor carp that is economically important and is threatened because of its ornamental value. The present investigation evaluated this barb gonadal maturation, based on morphology and spawning...
[Basic biological parameters for Pseudocurimata lineopunctata (Characiformes, Curimatidae) conservation in the Anchicayá River of the Cauca Valley, Colombia] [0.03%]
哥伦比亚考卡山谷安奇凯亚河Pseudocurimata lineopunctata（骨舌鱼目，银脂鲤科）保护的基本生物学参数
Sandra Lamouroux-López,Merling López,Héctor Flores
Sandra Lamouroux-López
Pseudocurimata lineopunctata represents an important nutritional source for local human communities in Colombia and Ecuador. Although the yearly catch of this fish is low (590 kg/year), there are no restrictions on minimum size, and this sp...
Trypanosoma evansi (Kinetoplastida: Trypanosomatidae) in capybaras (Hydrochoerus hydrochaeris, Rodentia: Hydrochoeridae): prevalence, effect and sexual selection [0.03%]
泰坦鼠兔的刚地弓形虫感染对繁殖力的影响及其机制研究
Emilio A Herrera,Yarlenis Castro
Emilio A Herrera
Parasites play a crucial role in the ecology of animals. They also appear to be important in mechanisms underlying sexual selection processes. In this article we study the prevalence, effect and potential role in sexual selection of the pro...
[Nesting ecology of Crocodylus acutus (Reptilia: Crocodylidae) in Bahia Portete, La Guajira, Colombia] [0.03%]
哥伦比亚拉瓜希拉巴哈港特特的尖吻鳄(Crocodylus acutus)生态学研究
John Jairo Gómez-González,Juan Carlos Narváez-Barandica,Lina Báez et al.
John Jairo Gómez-González et al.
C. acutus is cataloged in critical danger in Colombia. We studied its population at Bahia Portete, in order to survey the nesting activities and to obtain valuable information for a conservation management program. This study was undertaken...
[Economic potential of ornamental fish catching under federal protection in Mexico] [0.03%]
墨西哥受联邦保护的观赏鱼捕捞经济潜力分析
Diego Gijón-Díaz,Héctor Reyes-Bonilla,Triana P Guerrero-Izquierdo et al.
Diego Gijón-Díaz et al.
Ornamental fisheries are economically viable activities in developing countries due to the fact that aquaria have become a worldwide hobby. In Mexico, the fishery has been conducted since the 1980s, especially in the Baja California Peninsu...
[Reproduction of Centropomus undecimalis and C. ensiferus (Perciformes: Centropomidae) in a tropical coastal lagoon] [0.03%]
两种真绸鱼(Centropomusundecimalis和C.ensiferus)(鲈形目：绸鱼科)在热带海岸潟湖中的繁殖行为研究
Juan Gassman,Héctor López Rojas,Dana Padrón
Juan Gassman
Snooks C. undecimalis and C. ensiferus are important fishery resources in their distribution area. In Venezuela they are caught by artisanal fisheries along the entire coast. However, studies on their biology that would help establish fishi...