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OBSERVATIONS ON THE PARS INTERMEDIA OF THE PITUITARY IN THE CRESTED NEWT UNDER VARIOUS LIGHT CONDITIONS 不同光照条件下凤头蝾螈垂体中间部的观察
Pub Date : 2013-07-12 DOI: 10.1080/00269786.1972.10736189
M. Franzoni, A. Fasolo, V. Mazzi
SUMMARY The adenohypophysial pars intermedia of the crested newt reared under natural light conditions (M.I. = 3 to 4) is characterized by: a) secretory cells exhibiting moderately developted rough endoplasmic reticulum and fairly numerous secretion granules displaced to the apical cell region facing the perivascular space, and b) by non-glandular, spider-shaped cells. In the animals exposed to continuous illumination in white containers the skin is seen to become paler (M.I. = 1 to 2). The secretory cells of the pars intermedia appear crammed with secretion granules. Profiles of the rough endoplasmic reticulum are scanty. On the contrary, in the animals reared in the dark in black containers, a striking skin darkening takes place (M.I. = 4 to 5). The pars intermedia secretory cells reveal a definite decrease in the population of endocellular granules and a developed, rough endoplasmic reticulum, characterized by enlarged cisternae filled granular or filamentous material. Among the glandular cells, under ...
在自然光条件下饲养的冠毛newt腺垂体中间部(M.I. = 3 ~ 4)的特征是:a)分泌细胞表现出中等发育的粗糙内质网和相当多的分泌颗粒转移到面向血管周围间隙的顶细胞区域,b)非腺状的蜘蛛状细胞。在白色容器中连续暴露在光照下的动物,皮肤变得更苍白(M.I. = 1至2)。中间部的分泌细胞似乎塞满了分泌颗粒。粗面内质网的轮廓很少。相反,在黑暗的黑色容器中饲养的动物,皮肤显着变黑(M.I. = 4至5)。pars中间分泌细胞显示内细胞颗粒数量明显减少,内质网发达,粗糙,以充满颗粒或丝状物质的池增大为特征。在腺细胞中,在…
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引用次数: 0
L'ATTIVITÀ DEL «CENTRO DI STUDIO PER LA FAUNISTICA ED ECOLOGIA TROPICALI» DEL CONSIGLIO NAZIONALE DELLE RICERCHE NEL QUINQUENNIO 1971–1976 1971年至1976年期间,国家研究理事会“热带野生动物和生态研究中心”的活动
Pub Date : 2013-07-12 DOI: 10.1080/03749444.1976.10736827
L. Pardi
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引用次数: 20
MORPHOLOGICAL AND GENETIC DIFFERENTIATION BETWEEN THE IBERIAN AND THE OTHER WEST MEDITERRANEAN DISCOGLOSSUS SPECIES (AMPHIBIA SALIENTIA DISCOGLOSSIDAE) 伊比利亚和地中海西部其他两栖类的形态和遗传差异
Pub Date : 2013-07-12 DOI: 10.1080/00269786.1985.10736472
M. Capula, G. Nascetti, B. Lanza, L. Bullini, E. Crespo
SUMMARY Further data are reported on morphological and genetic differentiation among western Mediterranean populations of Discoglossus (Amphibia Salientia Discoglossidae). A new species is described from the Iberian Peninsula: D. galganoi n.sp., and its genetic divergence from the other Discoglossus taxa is analyzed. In spite of being morphologically similar, D. galganoi and D. pictus are genetically much differentiated: as many as 12 out of the 35 loci electrophoretically tested show distinct alleles in the two species. This allows an easy identification of larvae and adults, both males and females, of D. galganoi and D. pictus, as well as of the other west Mediterranean Discoglossus species, by means of biochemical keys. Two of such keys, based respectively on the loci lactate dehydrogenase-1 (Ldh-1) and adenosine deaminase (Ada) are reported. An attempt is made to estimate the time of evolutionary divergence between the taxa from their genetic distance using both NEI'S formula (1975) and SARICH'S calib...
进一步的资料报道了西地中海地区舌蝗(Amphibia Salientia Discoglossidae)种群的形态和遗传分化。伊比利亚半岛一新种:D. galgalanoi n.sp。分析了其与其他舌足分类群的遗传差异。尽管形态相似,但甘花莲和山猫在遗传上有很大的差异:电泳测试的35个位点中有12个在两个物种中显示出不同的等位基因。这样就可以很容易地通过生化键来识别galgalanoi D.和pictus D.的幼虫和成虫,包括雄性和雌性,以及其他西地中海舌龙物种。两个这样的关键,分别基于位点乳酸脱氢酶-1 (Ldh-1)和腺苷脱氨酶(Ada)报道。利用NEI’s公式(1975)和SARICH’s口径,从遗传距离出发,估算了这两个分类群的进化分化时间。
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引用次数: 7
LIGHT EMISSION, SEX ATTRACTION AND MALE FLASH DIALOGUES IN A FIREFLY, LUCIOLA LUSITANICA (CHARP.) 萤火虫(luciola lusitanica)的发光、性吸引和雄性闪光对话。
Pub Date : 2013-07-12 DOI: 10.1080/00269786.1969.10736139
F. Papi
SUMMARY In both sexes of L. lusitanica, light emission may consist of flashes as well as of dim light emitted for variable time intervals. Flying males emit an average of 1.08 flashes per second at a temperature of 17°C with occasional dim light emissions during the interflash period. Male flashes may be variable in form and length but are usually composed of a very intense peak accompanied by a series of minor ones. Dim light, which on some occasion has the function of illumination, consists either in a close succession of brief irregular flashes or in a more regular flickering. Females, which do not fly, have little spontaneous flashing activity. Their flashes are usually composed of three peaks, with the interval between the first two peaks increasing exponentially at decreasing temperatures (~ 77 msec at 26°C, 245 msec at 10°C). Females regularly respond with a flash to each light stimulus of steeply rising intensity, regardless of stimulus intensity, length, or spectral range (at least between about ...
在露西塔尼卡的两性中,发光可能包括闪光,也可能包括以不同的时间间隔发出的微弱光。在17°C的温度下,雄鸟平均每秒发出1.08次闪光,偶尔在闪光期间发出微弱的光。男性闪光的形式和长度可能不同,但通常由一个非常强烈的峰值和一系列较小的峰值组成。昏暗的光,在某些场合具有照明的功能,由连续的短暂的不规则闪光或更有规律的闪烁组成。雌性不会飞,很少有自发的闪光活动。它们的闪光通常由三个峰组成,随着温度的降低,前两个峰之间的间隔呈指数增长(26°C时为77毫秒,10°C时为245毫秒)。雌性对每一个强度急剧上升的光刺激都有规律地做出闪光反应,而不管刺激的强度、长度或光谱范围(至少在…
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引用次数: 5
RESEARCHES ON THE COAST OF SOMALIA. GALATHEA TANEGASHIMAE BABA (CRUSTACEA DECAPODA) FROM SOMALIA AND NOTES ON GALATHEA SPINOSOROSTRIS DANA (PUBBLICAZIONI DEL CENTRO DI STUDIO PER LA FAUNISTICA ED ECOLOGIA TROPICALI DEL C.N.R.: CXCIX) 索马里海岸的研究。来自索马里的GALATHEA TANEGASHIMAE BABA (CRUSTACEA dekabda)和关于GALATHEA SPINOSOROSTRIS DANA的说明(CXCIX热带野生动物和生态研究中心出版物)
Pub Date : 2013-07-12 DOI: 10.1080/03749444.1981.10736620
Contributo Del Consiglio Nazionale, Delle Ricerche, Chanan Lewinsohn
SUMMARY Galathea tanegashimae Baba (Crustacea Decapoda), previously known from Japan and Thailand, has been found in Somalia, living on alive scleroactinians (Acropora and Porites). A redescription is given and the relationships between this species and G. spinosorostris Dana are discussed.
以前在日本和泰国发现的甲壳类动物Galathea tanegashimae Baba(十足甲壳类)在索马里被发现,生活在活的硬壳类动物(Acropora和Porites)上。本文对该物种进行了重新描述,并讨论了该物种与G. spinosorostris Dana之间的关系。
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引用次数: 3
NOCTURNAL MIGRATIONS OF TALITRUS SALTATOR (MONTAGU) (CRUSTACEA AMPHIPODA) 双足类甲壳类动物的夜间迁徙
Pub Date : 2013-07-12 DOI: 10.1080/00269786.1967.10736103
L. Geppetti, P. Tongiorgi
SUMMARY The amphipod Talitrus saltator migrates from the moist zone near the shoreline inland to feed. The landward migration mainly occurs during the first few hours after midnight. The seaward migration take place around sunrise. The differences from night to night in the intensity of the landward migration are probably related to the quantity of food in the moist zone near the sea and to the level of environmental humidity.
片足类跳鲈从靠近海岸线的潮湿地带迁徙到内陆觅食。向陆地迁移主要发生在午夜后的最初几个小时。向海迁徙发生在日出前后。夜间向陆地迁移强度的差异可能与靠近海洋的潮湿地区的食物数量和环境湿度有关。
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引用次数: 6
STUDI SUI CROSTACEI ANFIPODI. LXIV. BOGIDIELLA SOMALA N.SP. DELLE ACQUE SOTTERRANEE DELLA SOMALIA (CRUSTACEA AMPHIPODA) 两栖贝类的研究。LXIV。索马里共和国索马里地下水(安菲波达crustea)
Pub Date : 2013-07-12 DOI: 10.1080/03749444.1970.10736763
S. Ruffo
RIASSUNTO L'Autore descrive Bogidiella somala n.sp., raccolta in pozzi situati nel bacino del medio Uebi Scebeli (Somalia). La specie appare notevolmente isolata entro il genere per la particolare conformazione delle mandibole e del palpo mandibolare allungatissimo (Fig. 2 A), per le piastre coxali molto ampie (Fig. 2 C), per la costituzione dei pereiopodi del quintosettimo paio, con basipodite allargato (Fig. 4 B, D). B. somala (con B. tabascensis Villalobos e B. bredini Shoemaker) ha una struttura generale di tipo cavernicolo e si contrappone percio alle numerose forme di tipo mesopsammico-interstiziale. Il rinvenimento di B. somala ha anche un rilevante interesse zoogeografico, dato che per tutta l'Africa intertropicale non si conoscevano fino ad oggi Gammaridi, sia per le acque dolci superficiali, che per quelle sotterranee.
作者描述了Bogidiella soa no .sp。(索马里)。这种物种显得孤立在特别设计的下颚和下颌palpo allungatissimo(如图2 (A)所示,coxali板非常广泛(图2 (C),与basipodite quintosettimo pereiopodi的几个宪法,扩大(图4 (B、D)。B .索马里(B . tabascensis Villalobos)和B . bredini一天)具有整体结构的gdp,反对各种形式的mesopsammico-interstiziale类型。索马里人的发现也引起了动物地理方面的极大兴趣,因为整个热带间非洲的淡水和地下水都不认识gammarid。
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引用次数: 2
PROLACTIN BINDING SITES IN XENOPUS LAEVIS (DAUDIN) (ANURA PIPIDAE) KIDNEY: AN AUTORADIOGRAPHIC AND IMMUNOCYTOCHEMICAL STUDY 非洲爪蟾肾脏催乳素结合位点:放射自显影和免疫细胞化学研究
Pub Date : 2013-07-12 DOI: 10.1080/00269786.1988.10736568
A. Guardabassi, E. Campantico, A. Guastalla, P. Pattono, C. Trovato
SUMMARY We have studied prolactin binding sites in Xenopus laevis (Daudin) (Anura Pipidae) kidney by autoradiography and immunocytochemistry. By the autoradiographic technique after intracardiac injection of 125I- oPRL labelling is appreciable in Xenopus laevis kidney at the level of the large vessels and capillaries, the renal corpuscle and, to a variable extent, within the lumina and epithelial cells of the proximal convoluted tubules. Compared to the autoradiographic reaction, the immunocytochemical method failed to reveal the hormone when extremely low doses of it were injected but allowed a much more exact localization of prolactin uptake by the epithelial cells of the proximal convoluted tubules. On the basis of the autoradiographs we could not ascertain wheter, or to what extent, the hormone was bound to specific renal cell PRL receptors: in fact, not only insulin and luteinizing hormone, but also unlabelled prolactin, injected as a specific competitor, failed to bring about the recognizable displa...
摘要利用放射自显影技术和免疫细胞化学方法研究了非洲爪蟾肾脏中催乳素的结合位点。在心内注射125I- oPRL后,通过放射自显影技术,在非洲爪蟾肾脏的大血管和毛细血管、肾小体以及近曲小管的腔内和上皮细胞(在不同程度上)都有明显的标记。与放射自显影反应相比,当注射极低剂量时,免疫细胞化学方法无法显示激素,但可以更准确地定位近曲小管上皮细胞对催乳素的摄取。在放射自显像的基础上,我们不能确定激素是否或在多大程度上与特定的肾细胞PRL受体结合:事实上,不仅胰岛素和黄体生成素,而且未标记的催乳素,作为特定的竞争对手注射,未能带来可识别的显示……
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引用次数: 0
RICERCHE SUL LITORALE DELLA SOMALIA. LA SPIAGGIA E LA DUNA DI SAR UANLE 索马里海岸研究。海滩和沙丘
Pub Date : 2013-07-12 DOI: 10.1080/03749444.1979.10736598
Enzo Colonnelli
RIASSUNTO Vengono descritti Brachycerus gilvipes n. sp. ed Hypohypurus litoralis n. sp., entrambi raccolti sul litorale della Somalia durante le ricerche organizzate dal Centro di Studio per la Faunistica ed Ecologia Tropicali del Consiglio Nazionale delle Ricerche.
摘要介绍了Brachycerus gilvipes n.sp和Hypohypurus litoralis n.sp,这两种方法都是在索马里海岸由国家研究理事会热带野生动物和生态研究中心组织的研究中收集的。
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引用次数: 0
COMPARATIVE RESEARCH ON THE SEXUALIZATION OF FISSIPAROUS PLANARIANS TREATED WITH SUBSTANCES CONTAINED IN SEXUAL PLANARIANS 用有性涡虫所含物质处理分裂涡虫性化的比较研究
Pub Date : 2013-07-12 DOI: 10.1080/00269786.1977.10736286
M. Benazzi, M. Grasso
SUMMARY Previous research had shown that asexual specimens of fissiparous Dugesia gonocephala s.l. stopped fissioning and developed a hermaphroditic genital apparatus if fed for several weeks on the crushed tissues of sexually mature Polycelis nigra Ehr., a non-fissiparous planarian. The present research shows that the sexualizing substance, probably a neurosecretion, is also present in the tissues of sexually mature Dugesia lugubris s.l., Dugesia dorolocephala (Woodworth), Dugesia anceps Kenk and Dendrocoelum lacteum (O. F. Muller), in concentrations which may differ according to the species but without any zoological specificity. There is a clear different in the capacity of each fissiparous species or strain to react to the sexualizing substances: while many asexual strains of Dugesia gonocephala s.l., Dugesia tigrina (Girard) and Dugesia Pdorotocephala (race from Sabino) reacted more-or-less positively to the treatment, agamic Dugesia dorotocephala, Dugesia mediterranea Benazzi et al. (fissiparous rac...
以往的研究表明,雌雄分裂的gonocephala s.l.的无性生殖标本如果在性成熟的Polycelis nigra Ehr的破碎组织上饲养几个星期,就会停止分裂并发育出雌雄同体的生殖器官。一种非裂生涡虫。本研究表明,性成熟的Dugesia lugubris s.l., Dugesia dorolocephala (Woodworth), Dugesia anceps Kenk和Dendrocoelum lacteum (O. F. Muller)的组织中也存在性化物质,可能是一种神经分泌物,其浓度可能因物种而异,但没有任何动物特异性。每个裂生物种或品系对性化物质的反应能力明显不同:虽然许多无性菌株的Dugesia gonocephala s.l, Dugesia tigrina (Girard)和Dugesia prodorotocephala(来自Sabino的种族)对处理反应或多或少是积极的,但无性的Dugesia dorotocephala, Dugesia mediterranea Benazzi等(裂生品系)对处理反应或积极。
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引用次数: 7
期刊
Monitore Zoologico Italiano-Italian Journal of Zoology
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