摘要:

Head‐body temperature differences of up to 5.7° and 6.1° C were observed during solar and radiant heating, respectively. Head temperature was more precisely regulated than body temperature and within preferred limits head temperature was significantly lower than body temperature. Higher temperatures were tolerated by the body than the head. Preferred temperatures for both the head and body are higher in the taipan than in other ophidians which have been reported upon, and approximate those temperatures reported for the voluntary maxima in other sna

ISSN:0024-4082    

DOI:10.1111/j.1096-3642.1975.tb00807.x

出版商:Blackwell Publishing Ltd    

年代:1975

数据来源: WILEY

摘要:

SUMMARYThe morphology of the alimentary and reproductive organs ofL. discicollis(Coleoptera: Lampyridae) was studied in detail. The alimentary canal possesses a pouch‐like proventriculus. It is suggested that this structure was once functional in ancestral Lampyridae. The details of the reproductive organs are given and it appears that they might be of value in determining the inter‐relationships of the families included in the superfamily Cantharoidea. Male and female specimens ofL. discicollishave been found to exhibit sexual dimorphism particularly marked in respect of the gut and the size of the e

ISSN:0024-4082    

DOI:10.1111/j.1096-3642.1975.tb00808.x

出版商:Blackwell Publishing Ltd    

年代:1975

数据来源: WILEY

摘要:

An account of the distribution of Australian land nemertines includes new specimens found in Queensland and near Canberra. Characters uniting AustralianGeonemertesand distinguishing betweenG. australiensis, G. hilliiandG. dendyiare redefined. A new speciesG. stockiis described and related to the other three species.

ISSN:0024-4082    

DOI:10.1111/j.1096-3642.1975.tb00809.x

出版商:Blackwell Publishing Ltd    

年代:1975

数据来源: WILEY

摘要:

Grooming or cleaning is a frequent behaviorial activity of the shrimpPandalus danae. Setal brushes on thoracic limbs scrape and rub other appendages and general surfaces of the exoskeleton. Chelate limbs nip and pick at edges of crevices in the cephalothoracic region. Scanning electron microscopy reveals that the setae composing the grooming brushes are equipped with characteristic tooth‐ and scale‐like setules which serve as the actual rasping devices. Antennules, antennae and pereopods are frequently preened by the third maxillipeds and first pereopods, while large areas of the exoskeleton are cleaned by the third pair of walking legs and the chelate limbs.Shrimp with the general cleaning limbs ablated develop significantly greater infestations of the epizoic suctorianEphelotathan animals allowed to groom. Olfactory hairs on the antennules of shrimp deprived of the third maxillipeds become fouled with diatoms and debris while those on controls do not. Grooming behavior clearly prevents a build‐up of settling organisms between molts and repeated cleaning of sensory sites is essential in maintaining contact with the enviro

ISSN:0024-4082    

DOI:10.1111/j.1096-3642.1975.tb00810.x

出版商:Blackwell Publishing Ltd    

年代:1975

数据来源: WILEY

摘要:

A new family, the Echinamoebidae, is proposed within the order Amoebida (Protozoa, Sarcodina) for amoebae producing finely‐pointed, non‐anastomosing pseudopodia. Within this family two new genera,EchinamoebaandStachyamoeba, are defined and two new species of edaphic origin described. The genusFilamoebaPage, 1967, is transferred to the Echinamoebidae, but further comparative studies are desirable before other genera are included. The varieties of conical sub‐pseudopodia are examined, and some of the general criteria for taxonomy of the Amoebida are discussed as they apply to the Echinamoe

ISSN:0024-4082    

DOI:10.1111/j.1096-3642.1975.tb00811.x

出版商:Blackwell Publishing Ltd    

年代:1975

数据来源: WILEY

ISSN:0024-4082    

DOI:10.1111/j.1096-3642.1975.tb00807a.x

出版商:Blackwell Publishing Ltd    

年代:1975

数据来源: WILEY