潮间带大弹涂鱼产卵习性和自然受精卵孵化研究   总被引：5，自引：0，他引：5  

张其永  洪万树  陈仕玺  吴仁协  王琼 《热带海洋学报》2006,25(5):68-73

从环氧树脂模型揭示了福建省福宁湾潮间带滩涂大弹涂鱼Boleophthalmus pectinirostris洞穴的整体结构。多数洞穴略呈Y字形,每个洞穴有主洞口和次洞口之分。春季5—6月大弹涂鱼洞穴的中下部出现1个产卵室,产卵室横切面的上方呈拱形,底部平坦。潮间带滩涂产卵习性实验表明,产卵前性成熟雄鱼建造产卵室,并引诱性成熟雌鱼进入产卵室内交配产卵,受精卵依靠粘着丝粘在产卵室的顶部和周壁。产卵后雄鱼留洞护卵。每个产卵室的受精卵总数为3 595—4 314粒,平均为3 957粒,平均受精率高达99.67%,受精卵密度为58—114粒.cm-2,平均为87粒.cm-2。产卵室顶部和周壁受精卵的粘着丝位于上端,胚体位于下端,呈倒立状态,大多数受精卵的胚体头部朝下,为反向卵(平均占98.07%),易于孵化出仔鱼。将潮间带洞穴内产卵室受精卵取回实验室,模拟洞穴的小生境进行孵化实验。2次模拟孵化实验结果表明,受精卵始终全淹没于海水的平均孵化率(81.19%—82.90%)高于受精卵湿露24h后才全淹没于海水的平均孵化率(76.38%—79.19%)。湿露而不淹没于海水的受精卵不能孵化出仔鱼。  相似文献   

All washed up: spatial and temporal variation in the wash-up and fate of chondrichthyan egg cases along a section of the Garden Route,South Africa     

S Schmöle  M Brown 《African Journal of Marine Science》2020,42(2):141-149

Washed-up chondrichthyan egg cases were collected along three different sandy beaches around Plettenberg Bay, South Africa, between April 2016 and March 2017. GPS location was recorded upon collection, and, after being soaked in fresh water for 12 hours, egg cases were identified to species level. Additionally, boreholes, damage, biofouling and state of the hatchling slit were recorded. The hatching success of each egg case was inferred from these factors. Over the year, 6 996 egg cases of nine species were collected. Egg cases of the tiger catshark Halaelurus natalensis had the highest hatching rate at 70%. Egg cases of the leopard catshark Poroderma pantherinum had the highest predation rate at 57%. Season had no significant effect either on overall egg-case counts or on per-species counts. Location, however, significantly affected the overall egg-case counts, as well as per-species counts, with the exceptions of H. natalensis and the St Joseph Callorhinchus capensis. The results of this study provide insight into chondrichthyan species occurrence and spatial variation along a section of the Garden Route in the Western Cape Province and can act as a baseline for future research.  相似文献   

双锯鱼属(Amphiprion)四种鱼种比较胚胎学研究和进化探讨     

张薇  孙志宾  马爱军  夏丹丹  王婷  于宏 《海洋与湖沼》2018,49(3):671-681

在严格控制水温和盐度条件下,对白条双锯鱼(Amphiprion frenatus)野生鱼、眼斑双锯鱼(A.ocellaris)野生鱼、海葵双锯鱼(A.percula)选育种和眼斑双锯鱼(A.ocellaris)选育种的胚胎发育进行观察比较。结果表明,所有双锯鱼几乎均稳定在一个月产卵两次,在相同的生长环境中,不同种类双锯鱼产卵时间相差不大,产卵间隔规律性较强;但胚胎发育时间有较大差别,海葵双锯鱼的选育种胚胎发育时间最长,眼斑双锯鱼的选育种最短。四种双锯鱼有着相同的胚胎发育学特征和孵化期,但胚胎发育时间不同,分别为244h、240h、260h、181h;其中卵裂期到神经胚期的发育时间差小于2h,翻转期至孵化期决定了胚胎发育时间。研究发现,不同双锯鱼胚胎发育时间可能与进化距离有关,且温度、光照周期以及卵质量与形态对其胚胎发育时间有较大影响。本研究的海葵双锯鱼选育种为纯人工选育的后代,在整个繁育过程中与野生种都有较大的差异。人工选育眼斑双锯鱼的胚胎发育时间最短,与野生眼斑双锯鱼差异明显。通过对不同双锯鱼比较胚胎学的研究可以丰富其人工选育技术,确定双锯鱼之间以及双锯鱼与其他鱼类的亲缘关系,为观赏鱼进化学说的发展和新品种选育提供依据。  相似文献   

Effects of suspended sediment on development and hatching of herring (Clupea harengus) eggs     

Thomas Kiørboe  Erik Frantsen  Carsten Jensen  Gorm Sørensen 《Estuarine, Coastal and Shelf Science》1981,13(1):107-111

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温盐度对斜带髭鲷孵化率及仔鱼存活率的影响   总被引：10，自引：2，他引：8  

林伟雄  陈伟洲 《台湾海峡》1998,17(3):305-308

本文对不同温、盐度梯度下斜带髭鲷的孵化情况进行探讨,结果表明：（１）斜带髭鲷的适宜孵化温度为１９－２５℃,最知温度为２３－２５℃。（２）适宜盐度为１６．３－３４．７,最适盐度为２４．２－３２．１,尤以２９．５为好。（３）当温度为２３℃,直２９．５,ＰＨ值为８．１－８．３时,幼体孵化率最高,达９３．３％,（４）温度２２．６－２３．４℃,盐度２４．２－３２．１,４２ｈ孵出的仔鱼至５２ｈ存活率高于８１  相似文献   

中国九个内陆盐湖卤虫的品系特征   总被引：8，自引：1，他引：7  

张波  辛乃宏  于秀玲  隋丽英 《湖泊科学》1998,10(3):19-24

分析了中国９个内陆盐湖卤虫的生物学测定值,孵化特性,蛋白质含量和脂肪酸组成,不同品系的卤虫在卵径,无节幼体体长,脱壳卵和无节幼体干重等生物学测定值方面存在着极其显著的差异（Ｐ〈０．０１）。  相似文献   

新疆巴里坤湖卤虫卵孵化率的研究   总被引：1，自引：1，他引：0  

马志珍  陈汇远  武振彬 《湖泊科学》1995,7(2):157-163

研究了我国新疆维吾尔自治区巴里坤湖（43.6°N,92.8°E）产的卤虫卵的采收方法、贮存条件对孵化率的影响和提高孵化率的几种化学和物理处理方法。据此设计了巴里坤湖卤虫卵的加工工艺流程,为进行规模性开发利用盐湖卤虫卵资源打下基础。  相似文献   

南海海龟资源现状及孵化养殖技术初步研究     

张晓荣  梁玉麟 《广东海洋大学学报》1993,(1)

阐述了南海海龟资源状况,研究了海龟的生态习性及其洄游产卵规律,並进行人工孵化、培育稚龟和标志放流的试验,初步达到了资源繁殖保护的目的。  相似文献   

牙鲆中孵化腺细胞的发育研究(英文)     

史振平  樊廷俊 《海洋湖沼通报》2010,(4)

在硬骨鱼类的孵化过程中,卵膜(壳)的裂解是由孵化腺细胞分泌的孵化酶完成的。为了探索鲆鲽类牙鲆Paralichthys olivaceus胚胎在孵化过程中孵化腺细胞的分化及变化规律,本文利用高碘酸-雪夫染色反应(PAS)研究了P.olivaceus胚胎在孵化过程中孵化腺细胞的分化及变化规律。结果表明,典型的孵化腺细胞于孵化前15小时出现,位于胚胎的前中部。孵化腺细胞的数量和体积均在孵化前达到最大值,而且,均位于胚胎头部和背部表面。一旦孵化结束,孵化腺细胞的数量和体积均急剧下降,并于孵化后13小时消化。  相似文献   

Impact of brine acidification on hatchability,survival and reproduction of Artemia parthenogenetica and Artemia franciscana in salt ponds,Bohai Bay,China   总被引：1，自引：0，他引：1  

隋丽英  邓元告  王婧 《中国海洋湖沼学报》2014,32(1):81-87

We studied the effect of pH(pH 5, 6, 7 and 8) on the hatching percentage, survival and reproduction of Artemia strains in Bohai Bay salt ponds. Strains included parthenogenetic Artemia from Bohai Bay(BHB), Artemia franciscana from San Francisco Bay, and A. franciscana artifi cially produced in salt ponds in Vietnam. The latter was included as a potential inoculum for biological management of salt ponds. The hatching percentage of cysts after 24 h and the survival rate of the tested Artemia strains were signifi cantly reduced when exposed to a culture medium at pH 5 for 18 d( P 0.05). The tolerance of Artemia to 48 h acid exposure varied with developmental stage, increasing in the following order: juvenile, nauplii, pre-adult, with maximum tolerance in adults. All strains of Artemia tested could not reproduce at pH 5. At pH levels from pH 6–8, a higher pH generally resulted in a shorter brood interval and enhanced ovoviviparity. Hence, we suggest that brine acidifi cation has a negative impact on Artemia populations in the Bohai Bay saltworks. Inoculation of Artemia with either local parthenogenetic Artemia or exotic A. franciscana should be feasible at pH 7–8.  相似文献