叶巢外睾吸虫精巢发育中染色体行为

报告了叶巢外睾吸虫性细胞发育的染色体行为，初级精母细胞经两次减数分裂发育为精子．第一次减数分裂的前期发育时间长而复杂，经历细线期至终变期等五期，各期形态均有描述．单倍体染色体为８条，核型特征是５Ｍ＋２ＳＴ＋１Ｔ．第二次减数分裂由次级精母细胞分裂产生３２个梭形精细胞，继而发育为３２条精子．     

用活性炭从水溶液中吸附乙腈特性的研究

用气相色谱法考察了活性炭从水溶液中对乙腈工业污染物的吸附行为，估算了吸附常数、孔扩散系数、吸附过程的焓变及描述吸附等温线方程有关参数．     

大学生体育与健康意识及行为的调查研究

通过教改前后我校大学生体育与健康意识及行为的对比分析,研究了影响大学生体育与健康意识及行为的主要原因,并提出全面提高学生的体育与健康意识、改变学生不良习惯的对策.     

蔗头象虫──细平象甲的研究初报

细平象（Ｔｒｏｃｈｏｒｈｏｐｄａｌｕｓｈｕｍｅｒａｌｉｓｃｈｅｖｒｏｌａｔ）是云南蔗区近十年来发展起来的一种新的地下害虫，以幼虫和成虫在甘蔗地下蔗头内蛀食，损失严重，一年发生一代。研究了该虫的生活习性及发生环境，发现成虫在蔗头内越冬，并提出了相应的防治措施。     

原平市国土开发利用的内外环境分析

本文根据笔者编制《原平市国土综合规划》的成果,从原平市的市情特点出发,探讨原平市的战略地位、国土资源优劣势,以及外部环境与市场分析等问题,并在此基础上提出原平市宏观调控、重点倾斜和总体协调的战略模式.     

太白山自助旅游者行为特征调查研究

通过对太白山自助旅游者问卷调查，运用旅游地理学、行为地理学及比较分析等方法，探讨了太白山自助旅游者的行为特征和生态旅游意识．结果表明，自助旅游者倾向于选择生态保护好的旅游目的地，且多为自发组织或通过卢外运动俱乐部带领并偏好小规模的团队；自助旅游者对景区线路的选择以点对点线路为主，表现为单一的目的地选择；对弹性比较大的旅行设备表现出强烈的购买欲望，但景区内消费较低；出游时间更倾向于避开旅游高峰期，即选择淡季出游；自助旅游者的环保意识较强，属于比较严格的生态旅游者。     

The natural history of the parasitic wasp Trogus pennator (Hymenoptera: Ichneumonidae): Host‐finding behaviour and a possible host countermeasure

The parasitic wasp Trogus pennator (Ichneumonidae) attacks the larvae of swallowtail butterflies (Papilionidae). Female T. pennator were followed in the field as they searched for larvae of the zebra swallowtail butterfly, Eurytides marcellus (Papilionidae), feeding on Asimina (Annonaceae) in central Florida, USA. Predictions of host‐finding theory and interactions with the host were thus investigated in a natural setting. Wasps seldom flew to plants other than Asimina and apparently recognized the plants by visual cues. Plants were attractive regardless of host presence, as the wasps approached plants lacking E. marcellus feeding damage twice as often as they approached damaged plants. However, wasps approached damaged plants at a rate greater than their frequency in the Asimina population, indicating that they can detect host damage before they approach the plants. After approaching within 0.5?m of plants, wasps tended not to land on plants lacking feeding damage. A comparison of the plants they landed on, however, showed no consistent preferences for damaged plants. The weaker trends in the latter data indicate that the presence of feeding damage was not the sole criterion for landing, although it evidently influenced behaviour. After landing, wasps spent more time searching damaged plants than undamaged plants. Butterflies preferred to oviposit on plants shorter than those searched by T. pennator. Possible adaptive consequences of this phenomenon are discussed.     

Tadpole deposition behaviour in male stream frogs Mannophryne trinitatis (Anura: Dendrobatidae)

Male Mannophryne trinitatis transport their larvae on their backs to predator‐free pools and deposit them there. The experiments reported here investigated M. trinitatis male deposition behaviour in containers placed near a heavily fish‐populated stream at Mount Saint Benedict, northern Trinidad. Choice of deposition site was not related to height above or distance from the stream. The low mean number of tadpoles deposited in each container in the field and in a laboratory experiment indicated that most males tended not to deposit complete clutches in single pools. Deposition experiments in the laboratory with a choice of different‐sized containers showed that deposition was pool size dependent, with more tadpoles deposited in larger containers. Deposition behaviour when given a choice of containers with leaf litter (a source of food and shelter) and with no leaf litter showed no significant preference. Tadpoles grown in different water volumes with different food sources revealed that tadpole growth was best in larger water volumes containing leaf litter. Regular tadpole inspections at a pool in the field established that most tadpoles present were the result of downstream movement.     

广义各向异性流的渐近性态

对按曲线流γｔ＝Ｖ（θ，ｋ）Ｎ演化着的平面光滑简单闭凸曲线给出了１个等周估计．由此结合尺度论证法得到平面光滑简单闭凸曲线在上述曲线流下的渐近性态．     

Homing behaviour of rock pool blenny Parablennius parvicornis (Pisces: Blenniidae)

The homing ability of the rock pool blenny Parablennius parvicornis was studied at a rocky shore on Gran Canaria (Canary Islands, Spain). A total of 140 fish was tagged in five different rock pools and 100 of these were displaced from their original site, during low tide. This blenny species shows great site fidelity and is able to return home from 400 m away. Results show that homing success mainly depends on the displacement distance and it increases when fish return against the current, whereas sex and fish size have no influence.