摘要:

Crepidula philippiana n. sp., a new Calyptraeid gastropod from Chile with special reference to its development,

ISSN:0165-0521    

DOI:10.1080/01650527709360518

出版商:Taylor & Francis Group    

年代:1977

数据来源: Taylor

摘要:

Four species ofGuaranidrilusare described from the broad‐leaved tropical rain forest region on the eastward mountain slopes of Serra do Mar, in the Parelheiros District, southern part of the municipality of São Paulo, Brazil.

ISSN:0165-0521    

DOI:10.1080/01650527709360519

出版商:Taylor & Francis Group    

年代:1977

数据来源: Taylor

摘要:

Fresh material of a species ofMestosomataken in Guanacaste Province, Costa Rica, shows the animal to be undescribed and not identical withM. pulvillatumas reported by Attems in 1933. The species is described asMestosoma moorei, and compared with the presumably related taxaM. salvadoriiandM. semirugosum, both the latter figured from typical material. A list of the species of the Salvadorii Group is given and arranged on the basis of color patterns. It is suggested that perhapsM. semirugosumbe relocated from this group, on the basis of a difference in the gonopod telopodite.

ISSN:0165-0521    

DOI:10.1080/01650527709360520

出版商:Taylor & Francis Group    

年代:1977

数据来源: Taylor

摘要:

Breading season, sexual rate, fecundity and minimum size for reproduction was studied inBasilichthys australisEigenmann 1927. Monthly samples were collected with a gill net from a river of the central part of Chile. It was found that the spawning period lasts from August to November, the smaller mature female had 176 mm T.L. Some changes in the sexual rate suggest a migration to the sea during summer time; the relative fecundity kept a relation of F = 0.0001 L327. However, according to the diameter of the eggs these would only have a viability of 32%.

ISSN:0165-0521    

DOI:10.1080/01650527709360521

出版商:Taylor & Francis Group    

年代:1977

数据来源: Taylor

ISSN:0165-0521    

DOI:10.1080/01650527709360517

出版商:Taylor & Francis Group    

年代:1977

数据来源: Taylor