THE CRICKETS OF ONTARIO

1904 ◽  
Vol 36 (9) ◽  
pp. 249-255 ◽  
Author(s):  
E. M. Walker
Keyword(s):  
Wing Length ◽  
House Cricket ◽  
Old World ◽  
Winged Form ◽  
Field Crickets ◽  
Black Field ◽  
The Common

This genus contains the common large black field crickets and the house cricket, which has been introduced into this country from the Old World. But three species have been taken in Ontario. All of these are dimorphic as regards wing-length, the shor-winged from being the normal one in the field crickets, the long-winged form in the house cricket.

scholarly journals A MORPHOLOGICAL COMPARISON OF ANTIPODEAN TELEOGRYLLUS SPECIES (ORTHOPTERA: GRYLLIDAE)

1967 ◽  
Vol 45 (6) ◽  
pp. 1215-1224 ◽  
Author(s):  
G.-T. Chen ◽  
V. R. Vickery ◽  
D. K. McE. Kevan
Keyword(s):  
New Zealand ◽  
Western Australia ◽  
Single Species ◽  
Distinct Species ◽  
Morphological Comparison ◽  
Field Crickets ◽  
Southeastern Australia ◽  
Black Field ◽  
The Common

The common "black" field crickets of the germs Teleogryllus from different regions of Australia and New Zealand were studied morphometrically in order to elucidate their taxonomy.Results show that these crickets, formerly regarded as comprising a single species, T. commodus (Walker), are actually two distinct species: T. oceanicus (Le Guillou) from northern Queensland and T. commodus from Western Australia, with other very closely related populations from southeastern Australia and from North Island, New Zealand. A population from Kaikoura, South Island, New Zealand, although a member of the T. commodus group, may represent a different subspecies.

scholarly journals SINE Insertions in Cladistic Analyses and the Phylogenetic Affiliations of Tarsius bancanus to Other Primates

Genetics ◽  
2001 ◽  
Vol 157 (2) ◽  
pp. 777-784
Author(s):  
Jürgen Schmitz ◽  
Martina Ohme ◽  
Hans Zischler
Keyword(s):  
New World ◽  
World Monkey ◽  
Old World ◽  
Alu Elements ◽  
Alu Sequences ◽  
Short Interspersed Elements ◽  
Divergence Point ◽  
Tarsius Bancanus ◽  
Cladistic Analyses ◽  
The Common

Abstract Transpositions of Alu sequences, representing the most abundant primate short interspersed elements (SINE), were evaluated as molecular cladistic markers to analyze the phylogenetic affiliations among the primate infraorders. Altogether 118 human loci, containing intronic Alu elements, were PCR analyzed for the presence of Alu sequences at orthologous sites in each of two strepsirhine, New World and Old World monkey species, Tarsius bancanus, and a nonprimate outgroup. Fourteen size-polymorphic amplification patterns exhibited longer fragments for the anthropoids (New World and Old World monkeys) and T. bancanus whereas shorter fragments were detected for the strepsirhines and the outgroup. From these, subsequent sequence analyses revealed three Alu transpositions, which can be regarded as shared derived molecular characters linking tarsiers and anthropoid primates. Concerning the other loci, scenarios are represented in which different SINE transpositions occurred independently in the same intron on the lineages leading both to the common ancestor of anthropoids and to T. bancanus, albeit at different nucleotide positions. Our results demonstrate the efficiency and possible pitfalls of SINE transpositions used as molecular cladistic markers in tracing back a divergence point in primate evolution over 40 million years old. The three Alu insertions characterized underpin the monophyly of haplorhine primates (Anthropoidea and Tarsioidea) from a novel perspective.

Antipredator behaviour of old-world tropical lizard, common agama Agama agama, in an urban environment

2019 ◽  
Vol 40 (3) ◽  
pp. 389-393
Author(s):  
Peter Mikula ◽  
Emma Nelson ◽  
Piotr Tryjanowski ◽  
Tomáš Albrecht
Keyword(s):  
Potential Effect ◽  
Antipredator Behaviour ◽  
Head Orientation ◽  
Adult Males ◽  
Escape Behaviour ◽  
Old World ◽  
Factors Affecting ◽  
The Common ◽  
Antipredator Strategy ◽  
Old World Tropics

Abstract Escape behaviour is a common antipredator strategy of lizards. Here, we studied the effect of several variables predicted to have a potential effect on escape behaviour of lizards. Specifically, we measured the effects of starting distance (SD), distance to cover, sex–age and the observer’s head orientation on flight initiation distance (FID) in the common agama Agama agama. Agamas were approached in urban localities in Limbe city, Cameroon, where they were habituated to the presence of humans. We found no association between FID and SD, but individuals closer to potential cover had shorter FID than individuals farther from a refuge. Juveniles escaped later than adults, but no significant differences were found in the FID between adult males and females. Head direction of the approaching observer had no effect on FID. This is, to the best of our knowledge, the first study investigating factors affecting FID in common agamas, extending our knowledge of risk-related behaviour in lizards of the Old World tropics.

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