ISSN:0165-0521    

DOI:10.1076/snfe.31.1.1.13323

出版商:Taylor & Francis Group    

年代:1996

数据来源: Taylor

ISSN:0165-0521    

DOI:10.1076/snfe.31.1.2.13322

出版商:Taylor & Francis Group    

年代:1996

数据来源: Taylor

摘要:

The geographical variation of three qualitative plumage characters and three body measurements of populations of the Scaled Woodcreeper (Lepidocolaptes squamatus), a species whose range is centered in eastern Brazil, is analyzed. Three distinctive populations are recognized (wagleri, squamatus, and falcinellus). Under the biological species concept (BSC), two species are recognized (L. squamatus, including squamatus and wagleri as subspecies; and L. falcinellus). Under either the phylogenetic species concept (PSC) or under the evolutionary species concept (ESC), the three distinctive populations should be regarded as independent species. Based on plumage similarities, we suggest that squamatus and wagleri form a monophyletic group, with falcinellus as its sister-group. Geological changes (tectonism and formation of river courses) are suggested as causal factors that promoted speciation in Scaled Woodcreepers.

ISSN:0165-0521    

DOI:10.1076/snfe.31.1.3.13321

出版商:Taylor & Francis Group    

年代:1996

数据来源: Taylor

摘要:

Body temperatures and thermoregulatory behaviour of the teiid lizard Ameiva ameiva inhabiting the edge and the understory were studied in Central Amazonian forests. Despite of differences in the thermal profile of the habitats, the mean body temperature was the same for active lizards observed at the edge or inside the forest, where only slight peculiarities in thermoregulatory behaviour were observed. A. ameiva is capable of maintaining body temperature significantly above microhabitat temperature.

ISSN:0165-0521    

DOI:10.1076/snfe.31.1.11.13324

出版商:Taylor & Francis Group    

年代:1996

数据来源: Taylor

摘要:

We present a key to distinguish among the described tadpoles of Costa Rican frogs and toads, summarize the reproductive modes present in this group, and present a bibliography of the published illustrations of those tadpoles.

ISSN:0165-0521    

DOI:10.1076/snfe.31.1.17.13320

出版商:Taylor & Francis Group    

年代:1996

数据来源: Taylor

摘要:

new species of loricariid catfish, Cordylancistrus perijae, is described on the basis of 32 specimens collected in three rivers N of Sierra de Perij , in NW Zulia state, Maracaibo Basin, Venezuela. The genus Cordylancistrus was created by Isbrücker (1980) for the single known species, Cordylancistrus torbesensis (Schultz 1944). All specimens of this species were collected in the Torbes River, a tributary of the Uribante River, Apure River system, Orinoco Basin. Cordylancistrus perijae can be recognized from C. torbesensis by the combination of the following characters: Head and caudal peduncle less depressed; odontodes of the interopercular area short, the longest not reaching beyond the base of the pectoral fin; and a distinctive colour pattern. Cordylancistrus torbesensis and C. perijae are restricted to the foothill rivers of the Cordillera de Mérida and Sierra de Perijá, respectively. These rivers belong to different basins (Orinoco and Maracaibo) clearly separated by the Cordillera de Mérida. This geographical distribution adds a new element to the biogeographical discussion about the Venezuelan fauna and lets us suggest a minimum age for the genus Cordylancistrus in Venezuela of approximately 20 my (Early Miocene).

ISSN:0165-0521    

DOI:10.1076/snfe.31.1.27.13317

出版商:Taylor & Francis Group    

年代:1996

数据来源: Taylor

摘要:

A first contribution towards the taxonomy of testate amoebae (Rhizopodea – Sarcodina) recorded in planktonic samples of lotic and lentic environments in the high Paraná River Floodplain in the States of Paraná and Mato Grosso do Sul, Brazil, is provided. Twenty-four taxa belonging to the families Arcellidae and Centropyxidae were identified, described and sketched. Among the taxa, A. vulgaris f. undulata, A. vulgaris var. penardi, A. mitrata var. spectabilis, A. nordestina and Centropyxis aculeata var. tropica represent new occurrences in Brazil.

ISSN:0165-0521    

DOI:10.1076/snfe.31.1.35.13315

出版商:Taylor & Francis Group    

年代:1996

数据来源: Taylor

摘要:

In Imboacica Lagoon, near Rio de Janeiro, chironomid larvae of the genera Endochironomus Kieffer, Goeldichironomus Fittkau, Polypedilum Kieffer and Monopelopia Fittkau occurred on senescent, submerged leaves of Typha domingensis.

ISSN:0165-0521    

DOI:10.1076/snfe.31.1.51.13319

出版商:Taylor & Francis Group    

年代:1996

数据来源: Taylor

摘要:

The aquatic beetle Hydraena delvasi sp. n. from Colombia, belonging to the family Hydraenidae, is described and illustrated as a new species. The types were collected by F. Collantes during a recent visit to Colombia.

ISSN:0165-0521    

DOI:10.1076/snfe.31.1.54.13318

出版商:Taylor & Francis Group    

年代:1996

数据来源: Taylor

摘要:

A pictorial key in English and Portugese is given for 2 families and 6 genera of the class Symphyla currently known from the Neotropical region, viz. Central America south of central Mexico, the Caribbean and entire South America.

ISSN:0165-0521    

DOI:10.1076/snfe.31.1.57.13316

出版商:Taylor & Francis Group    

年代:1996

数据来源: Taylor