The Crinia laevis complex (Anura : Leptodactylidae) in south-eastern Australia

1964 ◽  
Vol 12 (1) ◽  
pp. 70 ◽  
Author(s):  
MJ Littlejohn ◽  
AA Martin
Keyword(s):  
Life History ◽  
Geographical Distribution ◽  
Breeding Biology ◽  
Detailed Account ◽  
South Eastern ◽  
Eastern Australia ◽  
South Eastern Australia

On the basis of the presence of a call distinct from that of Crinia laevis (Gunther) and the absence of hybrids in sympatry, the species C. victoriana Boulenger is reestablished. A detailed account of the morphology, breeding biology, life history, and geographical distribution of these species is given. Their zoogeographical position in relation to the Bassian subregion is considered and a possible pattern of speciation advanced.

Regional differences in the reproductive parameters of the sparsely-spotted stingaree, Urolophus paucimaculatus, from south-eastern Australia

2014 ◽  
Vol 65 (11) ◽  
pp. 943 ◽  
Author(s):  
Fabian I. Trinnie ◽  
Terence I. Walker ◽  
Paul L. Jones ◽  
Laurie J. Laurenson
Keyword(s):  
Life History ◽  
Annual Cycle ◽  
Regional Differences ◽  
Life History Traits ◽  
Size At Maturity ◽  
Reproductive Parameters ◽  
Maternal Condition ◽  
South Eastern ◽  
Eastern Australia ◽  
South Eastern Australia

Whether spatial variation occurs in the life-history traits of chondrichthyan species is important to fisheries modelling and assessments. A study on the reproductive parameters of Urolophus paucimaculatus from four separate regions across south-eastern Australia found regional differences in maximum total length (TL), size-at-maturity, size-at-maternity and litter sizes. Inshore embayments (Port Phillip Bay (PPB) and Corner Inlet (CI)) appear to allow for larger TLs (females and males) than do offshore areas (Lakes Entrance (LE) and Western Bass Strait (WBS)). Size-at-maturity and size-at-maternity decreased across longitude from west (PPB) to east (LE) and seasonality of parturition and ovulation occurred earlier in PPB (August–October) than in LE (September–December). Maximum litter size correlated with maximum TL (six in PPB, five in each of CI and LE, and four in WBS). There was uncertainty in classifying females for maternal condition because the reproductive cycle appears to range from a continuous annual cycle to a non-continuous biennial cycle. Much of the uncertainty arises from the ambiguity of observation of non-pregnant mature females, which have either aborted through capture and handling, or are in a ‘resting year’ between pregnancies. Most likely, the majority are reproducing annually with an unknown proportion of females non-continuous and resting between pregnancies.

Geographical distribution of electrophoretically detected protein variation in Australian commercial fishes. I. Jack mackeral, Trachurus declivis Jenyns

1982 ◽  
Vol 33 (5) ◽  
pp. 917 ◽  
Author(s):  
BJ Richardson
Keyword(s):  
New Zealand ◽  
Geographical Distribution ◽  
Western Australia ◽  
Jack Mackerel ◽  
Polymorphic Loci ◽  
Protein Variation ◽  
South Eastern ◽  
Genotype Frequencies ◽  
Eastern Australia ◽  
South Eastern Australia

Eight polymorphic loci were detected in a survey for electrophoretically detectable protein variation, carried out using liver samples from the Australian jack mackerel, T. declivis. The distribution of gene and genotype frequencies in sample sets from different areas shows that distinct subpopulations of the species occur in Western Australia and in New Zealand and that two or more geographically overlapping but genetically distinct subpopulations occur in the waters around south-eastern Australia.

scholarly journals Contrasting impacts of environmental variability on the breeding biology of two sympatric small procellariiform seabirds in south-eastern Australia

2021 ◽  
Author(s):  
Yonina H Eizenberg ◽  
Aymeric Fromant ◽  
Arnaud Lec'hvien ◽  
John P Y Arnould
Keyword(s):  
Breeding Success ◽  
Environmental Variability ◽  
Marine Ecosystems ◽  
Breeding Biology ◽  
South Eastern ◽  
Eastern Australia ◽  
The Common ◽  
The Impact ◽  
Diving Petrel ◽  
South Eastern Australia

Seabirds play a vital role in marine ecosystems and are determinant sentinels of the productivity of their environments. The long-term study of their breeding biology and their responses to environmental variations can be used to monitor the effects of climate change on marine fauna. However, the ecological and physiological differences among seabirds induce a large range of responses complicating our understanding of the effects of environmental changes on marine ecosystems. The present study investigated the impact of environmental variability on breeding biology in two sympatric small Procellariiform species, the fairy prion ( Pachyptila turtur ) ) and the common diving petrel ( Pelecanoides urinatrix ), over four reproductive seasons (2017-2020) in Bass Strait, south-eastern Australia. Marine heatwaves had a negative effect on chick growth, breeding success, and induced a delay in laying dates in both species. While fairy prions maintained a relatively high breeding success and broadly constant breeding phenology, common diving petrels delayed the start of the breeding season by up to 50 days and experienced dramatic collapses in breeding success in years of high marine heat wave occurrence. The high wing loading and absence of stomach oils in the common diving petrel are likely to have limited the capacity of this species to increase foraging effort in years of low food availability.

Insects of South-Eastern Australia

2016 ◽  
Author(s):  
Roger Farrow
Keyword(s):  
Life History ◽  
Host Plants ◽  
Feeding Strategies ◽  
Feeding Preferences ◽  
South Eastern ◽  
Starting Point ◽  
Eastern Australia ◽  
Plant Feeders ◽  
Field Naturalist ◽  
South Eastern Australia

A walk in the bush reveals insects visiting flowers, patrolling the air, burrowing under bark and even biting your skin. Every insect has characteristic feeding preferences and behaviours. Insects of South-Eastern Australia is a unique field guide that uses host plants and behavioural attributes as the starting point for identifying insects. Richly illustrated with colour photographs, the different species of insects found in Australia’s temperate south-east, including plant feeders, predators, parasites and decomposers, are presented. The guide is complemented by an introduction to the insects of the region, including their environment, classification, life history, feeding strategies and behaviour. Fascinating boxes on camouflage, mimicry and many other topics are also included throughout. Whether you are a field naturalist, entomologist or just want to know what’s in your backyard, Insects of South-Eastern Australia will help you to identify the insects most likely to be encountered, as well as understand the basics of their ecology and behaviour. Recipient of a 2016 Whitley Award commendation for Illustrated Guide

scholarly journals Contrasting impacts of environmental variability on the breeding biology of two sympatric small procellariiform seabirds in south-eastern Australia

PLoS ONE ◽  
2021 ◽  
Vol 16 (9) ◽  
pp. e0250916
Author(s):  
Yonina H. Eizenberg ◽  
Aymeric Fromant ◽  
Arnaud Lec’hvien ◽  
John P. Y. Arnould
Keyword(s):  
Breeding Success ◽  
Marine Ecosystems ◽  
Breeding Biology ◽  
Breeding Phenology ◽  
Chick Growth ◽  
Seabird Species ◽  
South Eastern ◽  
Long Term Study ◽  
Eastern Australia ◽  
South Eastern Australia

Seabirds play a vital role in marine ecosystems and the long-term study of their responses to environmental variations can be used to monitor the effects of climate change on marine fauna. However, slight differences in similar seabird species result in a range of responses which complicates our understanding of the effects of environmental changes to marine ecosystems. The present study investigated inter-annual differences in the breeding biology (breeding phenology, chick growth rates and breeding success) and environmental conditions (seasonal sea surface temperatures) of important foraging areas in two sympatric small Procellariiform species, the fairy prion (Pachyptila turtur) and the common diving petrel (Pelecanoides urinatrix), over four reproductive seasons (2017–2020) in Bass Strait, south-eastern Australia. Marine heatwaves occurred during the years of 2018/19 and 2019/20 and coincided with years of delayed laying dates, slower chick growth and reduced breeding success, in both species. While fairy prions maintained a relatively high breeding success and broadly constant breeding phenology, common diving petrels delayed the start of the breeding season by up to 50 days and experienced dramatic collapses in breeding success in years of high marine heat wave occurrence. The difference in foraging ecology and physiological capacity (largely in the production of stomach oils and fasting abilities of adults and chicks) between both species are likely to influence the variability and phenology in the observed breeding seasons.

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