A. Grigolo, L. Sacchi, U. Laudani, S. Jayakar, L. Z. Sgaramella
{"title":"THE DYNAMICS OF ENDOSYMBIOSIS DURING DEVELOPMENT IN THE GERMAN COCKROACH, BLATTELLA GERMANICA L. (BLATTODEA)","authors":"A. Grigolo, L. Sacchi, U. Laudani, S. Jayakar, L. Z. Sgaramella","doi":"10.1080/00269786.1984.10736457","DOIUrl":"https://doi.org/10.1080/00269786.1984.10736457","url":null,"abstract":"SUMMARY The changes in the numbers and the sizes of mycetocytes of the fat body and in the area of the adipose lobes in Blattella germanica L. (Blattodea) have been studied. The number of mycetocytes tends to increse and their area to decrease towards the end of every nymphal instar. The lobe area is smallest at the beginning of each instar, independently of age. These results show that the timing of division of the mycetocytes is controlled by the insect.","PeriodicalId":19014,"journal":{"name":"Monitore Zoologico Italiano-Italian Journal of Zoology","volume":"80 1","pages":"231-238"},"PeriodicalIF":0.0,"publicationDate":"2013-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90629102","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"ULTRASTRUCTURE OF THE CELLS OF THE BOUNDARY LAYER OF SMALL VESSELS IN THE DIGESTIVE GLAND OF THE GASTROPOD PULMONATE EOBANIA VERMICULATA (MÜLLER)","authors":"G. Bani, G. Delfino","doi":"10.1080/00269786.1974.10736225","DOIUrl":"https://doi.org/10.1080/00269786.1974.10736225","url":null,"abstract":"SUMMARY We have described the vascular network of the digestive gland of Eobania vermiculata (Muller), with special reference to the ultrastructure of endothelial-like cells forming the capillary wall. These cells functionally correspond to elements of the normal endothelium but possess some exclusive ultrastructural features. The particular position of the cell nuclei and the relationship to the surrounding connective tissue (the loose perivascular connective tissue and interstitial vesicular cells) are shown. Irregular microvilli and pinocytosis vesicles are found on both inner and outer surfaces and oriented bundles of filaments occupy the central portion of the cytoplasm, anchoring to the plasmalemma. The hypothesis is advanced that these filaments are contractile in nature and, therefore, endothelial-like cells are retained capable of autoregulative processes, in order to adjust the calibre of the capillary lumen according to the rate of blood-tissue exchanges.","PeriodicalId":19014,"journal":{"name":"Monitore Zoologico Italiano-Italian Journal of Zoology","volume":"40 1","pages":"71-83"},"PeriodicalIF":0.0,"publicationDate":"2013-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85520039","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"THE COMPETENCE OF KALOTERMES FLAVICOLLIS FABR. (ISOPTERA) PSEUDERGATES TO DIFFERENTIATE INTO SOLDIERS","authors":"A. Springhetti","doi":"10.1080/00269786.1972.10736188","DOIUrl":"https://doi.org/10.1080/00269786.1972.10736188","url":null,"abstract":"SUMMARY Previous investigations carried out in our laboratory on Kalotermes flavicollis Fabr. had shown that the royal pair exerts a stimulatory action on pseudergate differentiation into soldiers, while the latter have an inhibitory influence on it (SPRINGHETTI, 1969). The present experiments have shown that the pseudergate moulting interval is of fairly variable duration, from 18 to 140 days, with a mean of about 70 days. Its average duration, however, is the same both in specimens differentiating into soldiers and in those undergoing a larval moult. Pseudergates display a rather short competence period for differentiation into soldiers during the second half of the moulting interval: possibly between the 45th and 60th day. Pseudergates are responsive only during their competence period, to the antagonistic stimuli exerted by the royals and soldiers respectively. The absence of soldiers prior to the 40th day does not elicit the differentiation of new soldiers (even in the presence of the reproductives);...","PeriodicalId":19014,"journal":{"name":"Monitore Zoologico Italiano-Italian Journal of Zoology","volume":"74 1","pages":"97-111"},"PeriodicalIF":0.0,"publicationDate":"2013-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88503881","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"LIGHT SENSITIVITY EXPERIMENTS AND MORPHOLOGY STUDIES OF THE BLIND PHREATIC FISH PHREATICHTHYS ANDRUZZII VINCIGUERRA FROM SOMALIA","authors":"A. Ercolini, R. Berti","doi":"10.1080/03749444.1975.10736807","DOIUrl":"https://doi.org/10.1080/03749444.1975.10736807","url":null,"abstract":"SUMMARY Experiments with the anophthalmic phreatic fish Phreatichthys andruzzii Vinciguerra from Somalia revealed its sensibility to various monochromatic lights, particularly to blue light (480 nm). The anophthalmic condition is accompanied by a total lack of optic nerves and, in comparison to closely related visual species, a highly reduced encephalon particularly in the zone of the optic lobes. Though the site sensitive to luminous energy has not yet been identified, it can be hypothesized that this is located in the central nervous system.","PeriodicalId":19014,"journal":{"name":"Monitore Zoologico Italiano-Italian Journal of Zoology","volume":"2 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2013-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88633082","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"«Lügen» Bienen? ein Beitrag zur Psychologie der Bienen","authors":"H. Martin","doi":"10.1080/00269786.1986.10736487","DOIUrl":"https://doi.org/10.1080/00269786.1986.10736487","url":null,"abstract":"ZUSAMMENFASSUNG Es wird bei der Biene eine Verhaltenskette beschrieben, die nach menschlichem Moralbegriff eindeutig als Luge zu bezeichnen ist. Ob diese «vorteilslose» Luge der «vorteilverschaffenden» Luge menschlichen Handelns gleichzusetzen ist, kann nicht beantwortet werden.","PeriodicalId":19014,"journal":{"name":"Monitore Zoologico Italiano-Italian Journal of Zoology","volume":"26 1","pages":"25-30"},"PeriodicalIF":0.0,"publicationDate":"2013-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75534752","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"ON SOME NEW OR INTERESTING EAST AFRICAN AMPHIBIANS AND REPTILES","authors":"B. Lanza","doi":"10.1080/03749444.1978.10736869","DOIUrl":"https://doi.org/10.1080/03749444.1978.10736869","url":null,"abstract":"SUMMARY Description of a new frog tentatively assigned to the genus Hildebrandtia [Hildebrandtia (?) largeni n.sp. from Garoe, N Somalia] and of five new geckos of the genus Hemidactylus: H. arnoldi n.sp. from NW Somalia, H. bavazzanoi n.sp. from SW Somalia, H. granchii n.sp. from central Somalia, H. yerburyi pauciporosus n.subsp. from N Somalia and H. funaiolii n.sp. from Archer's Post, central Kenya. Notes on the frogs Hemisus marmoratus marmoratus (Peters, 1854), genus new to Somalia, Hyperolius argus Peters, 1854, Hyperolius nasutus (Gunther, 1864), Hyperolius pusillus (Cope, 1862), three species new to Somalia, Phrynomerus bifasciatus bifasciatus (Smith, 1847), subspecies new to Somalia, and on some interesting Somalian amphibians [Hyperolius viridiflavus (Dumeril & Bibron, 1841)] and reptiles: the lizards Hemidactylus parkeri Loveridge, 1936, which substitutes H. turcicus (Linnaeus, 1758) in eastern Africa, Hemidactylus macropholis Boulenger, 1896, Hemidactylus sinaitus Boulenger, 1885, Hemidactylus...","PeriodicalId":19014,"journal":{"name":"Monitore Zoologico Italiano-Italian Journal of Zoology","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2013-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90895060","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"ASPECTS OF SPONTANEOUS ORIENTATION AND BIAS IN THE MAZE-BEHAVIOUR OF LITHOBIUS FORFICATUS L. (MYRIAPODA CHILOPODA) AND THE WHITE MOUSE (MUS MUSCULUS L.)","authors":"M. Schäfer","doi":"10.1080/00269786.1976.10736266","DOIUrl":"https://doi.org/10.1080/00269786.1976.10736266","url":null,"abstract":"SUMMARY Spontaneous orientation in T-mazes and at the exits of simple straight corridors were measured in the centipede Lithobius forficatus L. (Myria- poda) and in white mice (Mus musculus L.); the mice were trained by different learning-programmes in a double-T-maze and their spontaneous tendencies were analysed in relation to learning. In Lithobius spontaneous alternation could be demonstrated as the dominant factor in maze-behaviour. In the mice, although descended from one inbred-strain, no general tendency was found, but single individuals demonstrated very fixed types of orientation either as bias or alternation.","PeriodicalId":19014,"journal":{"name":"Monitore Zoologico Italiano-Italian Journal of Zoology","volume":"15 1","pages":"205-217"},"PeriodicalIF":0.0,"publicationDate":"2013-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90305795","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"SOMITIC TOPOGRAPHY, SCLEROTOMAL DIFFERENTIATION AND VERTEBRAL DEVELOPMENT IN THE EARLY CHICK EMBRYO","authors":"G. Panattoni, L. Andreotti, L. S. Daneo","doi":"10.1080/00269786.1988.10736543","DOIUrl":"https://doi.org/10.1080/00269786.1988.10736543","url":null,"abstract":"SUMMARY Following previous work on the three-dimensional morphology of the somites and developing spinal ganglia, sclerotomal differentiation and the first phase of vertebral development were studied by typing the somitic cellular territories using L.M. and T.E.M. for the analysis of 30 chick embryos (from the 51st hour to the 5th day of incubation). Two distinct territories were identified in the ventro-medial portion of the somite: the undifferentiated somitic mesoderm, loose, with polymorphous cells, located in the cranial half of the somite; the sclerotome, dense, with smaller and ovoidal cells, located in the caudal half of the somite and with a trend to extend in a ventro-medial and caudal direction. Moreover, it was possible to reconstruct the mechanism of the formation of the vertebral body, after the fusion, around the notochord, of homologous sclerotomes, situated from the beginning of their differentiation at a more caudal level with respect to the myotomes and spinal nerves. Rejecting the theo...","PeriodicalId":19014,"journal":{"name":"Monitore Zoologico Italiano-Italian Journal of Zoology","volume":"59 1","pages":"77-88"},"PeriodicalIF":0.0,"publicationDate":"2013-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90718916","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"EFFECTS OF CASTRATION AND CASTRATION FOLLOWED BY SEX STEROID TREATMENT ON THE INTERRENAL GLAND AND PARS DISTALIS OF THE INDIAN SKIPPER FROG, RANA CYANOPHLYCTIS SCHNEIDER","authors":"H. N. Yajurvedi, M. Hooli","doi":"10.1080/00269786.1985.10736467","DOIUrl":"https://doi.org/10.1080/00269786.1985.10736467","url":null,"abstract":"SUMMARY The effect of castration and those of replacement therapy with testosterone propionate and estradiol-17β on the interrenal gland and the pars distalis were studied in the male frog, Rana cyanophlyctis Schneider (Amphibia Ranidae). Fifteen days after castration there was a significant increase in the interrenal cell and nuclear diameters and an increase in G-6-PDH and Δ5-3β-HSDH activity in the interrenal gland and changes in these parameters were more pronounced 1 month after castration. The b2 cells in the pars distalis showed a slight degranulation, 15 days after castration and an extensive degranulation, vacuolization and a significant increase in nuclear and cellular area, 1 month after castration. The administration of testosterone or estradiol to the castrates caused the normalization of castration-induced changes in the interrenals as well as in b2 cells. These results suggest that, castration leads to hypertrophy of the interrenals and gonadotrops and treatment of the castrates with androg...","PeriodicalId":19014,"journal":{"name":"Monitore Zoologico Italiano-Italian Journal of Zoology","volume":"49 1","pages":"1-15"},"PeriodicalIF":0.0,"publicationDate":"2013-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85533264","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"STENASELLUS MIGIURTINICUS SP. N., ISOPODE FREATOBIO DELLA SOMALIA SETTENTRIONALE","authors":"G. Messana, L. Chelazzi, Benedetto Lanza","doi":"10.1080/03749444.1974.10736805","DOIUrl":"https://doi.org/10.1080/03749444.1974.10736805","url":null,"abstract":"RIASSUNTO Descrizione dello Stenasellus migiurtinicus sp.n. della falda freatica della Migiurtinia settentrionale (Oasi di Teiega, presso Meragno: 11°42′N- 50°28′E). E molto affine alle altre due specie somale, S. pardii Lanza, 1966 e S. costai Lanza, Chelazzi & Messana, 1970, e specialmente a quest'ultima, dalla quale si distingue soprattutto per le minori dimensioni (S. migiurtinicus ♂ 10 mm, ♀ 13,5 mm; S. costai ♂ 26 mm, ♀ 25,5 mm), per avere la lacinia mobile della mandibola sinistra di forma laminare (invece che a sezione subcilindrica) e il simpodite del II pleopode maschile piu tozzo, sempre piu di 1 volta e mezzo piu lungo che largo.","PeriodicalId":19014,"journal":{"name":"Monitore Zoologico Italiano-Italian Journal of Zoology","volume":"4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2013-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84715481","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}