摘要:

Aspects of the morphology of II species of Triviidae are described, including the living animal, shell, radula, mantle complex, central nervous system and reproductive system. Interspecific differences in radular morphology are important in distinguishing closely allied species.Trivia aperta, T. costataandT. verhoeftare protandric hermaphrodites whileT. caluariola, T. neglccta, T. pellucidula, T. rubra, T. solandriandT. suavisare gonochoric. The elaboration of the receptaculum seminis varies between species. InT. aperta, T. calvariola, T. neglectaandT. who&the receptaculum is undivided while in T.costafa, T. pellucidula, T. solandriandT. suavisthere are two or more lobes of the receptaculum.

ISSN:0024-4082    

DOI:10.1111/j.1096-3642.1987.tb01354.x

出版商:Blackwell Publishing Ltd    

年代:1987

数据来源: WILEY

摘要:

Observations of members of the staphylinid genusEumicrotashow that they breed on a variety of relatively persistent gilled mushrooms(Pleurotus, Hohenbuehelia), relatively fleshy polypores(Fauolus, Phaeolus)and similar fungi(Climacodon, Hydnellum, Phanerochaete), and a few more woody polypores(Daedaleopszs).Behaviour features of membersof Eumicrotaassociated with these mushrooms include: construction of an egg chamber by the female; female guarding and care of eggs; and fidelity of the female to the egg chamber before, during, and after hatching. Such energetic investment by the female results in increased survival and hatching of eggs by preventing egg predation by conspecific larvae and adults, and by preventing fungal hyphae from growing over the eggs. This behaviour differs significantly from that of related genera(Phanerota, Gyrophaena)which live and breed on more ephemeral gilled mushrooms. This is especially noticable in comparison with members of the genusGyrophaenawhich are exclusively limited to those mushrooms. Members ofGyrophaenado not form an egg chamber or guard their eggs (though some cover their eggs with a layer of fungal frass), adults leave the mushroom soon after larvae hatch, and females lay significantly fewer eggs per clutch(Gyrophaenamean = 4.94, N= 18;Eumicrotamean = 11.78,N= 23;P<0.05). It is hypothesized that these differences in behaviour of closely related genera reflect life cycle strategies evolved in response to host fungi which differ in persistence and predictability. Comparison of known behavioural features among lineages of gyrophaenine staphylinid beetles did not resolve the phylogenetic patterns of evolution of these life history features, primarily because of lack of comparative data for some groups.

ISSN:0024-4082    

DOI:10.1111/j.1096-3642.1987.tb01355.x

出版商:Blackwell Publishing Ltd    

年代:1987

数据来源: WILEY

摘要:

The holotype of the Upper Permian gliding reptileWeigeltisaurus jaekeliis redescribed. Comparison with the Madagascan reptileCoelurosauravusshows that the two forms are congeneric.CoelurosauravusPiveteau, 1926 has priority. The Upper Permian genusGracilisaurusWeigelt, 1930 is reviewed and referred toCoelurosauravus.

ISSN:0024-4082    

DOI:10.1111/j.1096-3642.1987.tb01356.x

出版商:Blackwell Publishing Ltd    

年代:1987

数据来源: WILEY