- Regional Population Connectivity, Oceanic Habitat, and Return Migration Revealed by Satellite Tagging of White Sharks, Carcharodon carcharias, at New Zealand Aggregation Sites

2012 ◽  
pp. 326-343 ◽  
Keyword(s):  
New Zealand ◽  
Return Migration ◽  
Population Connectivity ◽  
Carcharodon Carcharias ◽  
Regional Population ◽  
Satellite Tagging

The New Chinese Community in New Zealand: Local Outcomes of Transnationalism

2001 ◽  
Vol 10 (2) ◽  
pp. 213-240 ◽  
Author(s):  
Manying Ip Wardlow Friesen
Keyword(s):  
New Zealand ◽  
Return Migration ◽  
Host Society ◽  
Chinese Community ◽  
Republic Of China ◽  
Economic Motivation ◽  
Economic Miracle ◽  
Chinese Migrants ◽  
Depth Interviews

The new Chinese community in New Zealand (formed since 1987) is made up of immigrants from the People's Republic of China, Taiwan, Hong Kong and Malaysia as well as other countries. Initially looked upon as harbingers of the “Asian economic miracle” by the New Zealand government, the new arrivals met with numerous unforeseen difficulties. This article is based on the findings of surveys and in-depth interviews in which the primary migrants were asked about their motives for migration, the economic and social outcomes of their migration, their perception of the comparative strengths of their native land and New Zealand, and their long-term view on settlement and return migration. The surveys are also set against background statistics from the 1996 census as well as immigration figures up to 2000. The findings challenge the assumption of the importance of the economic motivation of migration, and point to the primacy of social and environmental factors. They also suggest that transnationalism is a long-term strategy, instead of a temporary expediency, but also that most Chinese migrants in New Zealand have tried to integrate with the host society when possible.

scholarly journals Some Copepoda Parasitic on Fishes of the New Zealand Region

2021 ◽  
Author(s):  
◽  
G C Hewitt
Keyword(s):  
New Species ◽  
New Zealand ◽  
Host Species ◽  
Present Species ◽  
Carcharodon Carcharias ◽  
Mola Mola ◽  
Isurus Oxyrinchus ◽  
Thunnus Alalunga ◽  
Cetorhinus Maximus ◽  
A New Species

<p>Material representing 38 species of parasitic Copepoda, Order Caligoida, from New Zealand marine fishes, belonging to 20 genera and six families is discussed. Except for Lepeophtheirus erecsoni Thomson, of which only damaged material was available, the species are described and figured in detail. Previous records from New Zealand waters are discussed. The name Caligus vicarius is proposed for C. longicaudatus Brady which is preoccupied. Species examined and their hosts are as follows (new hosts for previously known species, and previously known species newly recorded from New Zealand are marked with asterisks) - Caligidae: Caligus brevis Shiinox on Pseudolabrus pittensisx, P. milesx and P. celidotusx; C. aesopus Wilsonx on Seriola grandisx; C. pelamydis Kroyerx on Thyrsites atunx; C. buechlerae Hewitt on Tripterygion sp.; Lepeophtheirus erecsoni Thomson on Latridopsis ciliaris; L. scutiger Shiinox on Pseudolabrus pittensisx, P. milesx and P. celidotusx; L. insignis Wilsonx on Mola mola; L. polyprioni Hewitt on Polyprion oxygenios and P. moeone; L. argentus Hewitt on Hyperoglyphe porosa; L. heegaardi Hewitt on Lepidopus caudatus; L. distinctus Hewitt on Genypterus blacodes; Euyphoridae: Gloiopotes huttoni (Thomson) on Makaira mitsukurii and M. marlina; Elytrophora brachyptera Gerstaekerx on Thunnus alalunga and. T. maccoyix; Pandaridae: Nesippus orientalis Hellerx on Mustelus antarcticus and Notorhynchus pectorosusx; N. borealis (Steenstrup and Lutken)x on Isurus oxyrinchusx; Dinemoura latifolia Steenstrup and Lutken on Carcharodon carcharias, Isurus oxyrinchus and Galeorhinus australis; D. producta (Muller) on Cetorhinus maximus and Carcharodon carcharias; Demoleus latus Shiinox on Squalus acanthiasx; Echthrogaleus braccatus (Dana) on an unrecorded host; E. coleoptratus (Guerin)x on Prionace glauca and Lamna nasus; E. denticulatus Smith on an unrecorded host; Phyllothyreus cornutus (Milne-Edwards)x on Isurus oxyrinchus; Pandarus bicolor Leachx on Squalus acanthias, Galeorhinus australisx, Notorhynchus pectorosusx and Cyprimulus sp.x; P. cranchii Leach on Galeorhinus australisx and Isurus oxyrinchus; Perissopus dentatus Steenstrup and Lutkenx on a hammerhead shark; Cecropidae: Cecrops latreillii Leach on Mola mola; Eudactylinidae: Nemesis lamna Rissox on Carcharodon carcharias, Cetorhinus maximus and Isurus oxyrinchus; N. robusta (van Beneden)x on Alopias vulpinus; Congericola pallidus van Benedenx on Conger vereauxix Dichelesthiidae; Pseudocycnus appendiculatus Hellerx on Thunnus alalunga; a new species of Hatschekia on Allomycterus jaculiferus; a further new species of Hatschekia on Lepidopus caudatus; Anthosomidae: a new species of Pseudolernanthropus on Thyrsites atun and Jordanidia solandri; a new species of Lernanthropus on Seriolella brama; Aethon percis (Thomson) on Parapercis coelias; two new species of Aethon on Cheilodactylus macropterus and Latridopus caudatues; Anthosoma crassum (Abildgaard) on Carcharodon carcharias, Isurus oxyrinchus, Lamna nasus and Galeorhinus galeusx; this collection includes all species belonging to these families which have previously and reliably been recorded from New Zealand waters, and of which adequate descriptions exist. The similarities of the cephalic appendages of caligoid copepods to those of free living copepods is discussed. The biogeographical relationships of the species here recorded are considered and it is concluded that many of these species, particularly those parasitic on elasmobranchs, are widespread, and that many of those with apparently restricted distributions may become known from other regions, especially when the little investigated parasite faunas of fishes from the South Pacific and South Atlantic become more fully known; the hosts from which the present species have been recorded are compared; it is shown that species occurring on elasmobranchs are confined to this but show little host specificity within it; teleost parasites may be restricted to one host species, one host genus, one host family, or to host families with systematic or ecological affinities; Cecrops latreillii is unique among these parasites in occurring on three quite different and apparently unrelated host species.</p>

scholarly journals Characterization of the complete mitochondrial genomes of two sibling species of parasitic roundworms, Haemonchus contortus and Teladorsagia circumcincta.

2020 ◽  
Author(s):  
Nikola Palevich ◽  
Paul Haydon Maclean ◽  
Young-Jun Choi ◽  
Makedonka Mitreva
Keyword(s):  
New Zealand ◽  
High Resolution ◽  
Haemonchus Contortus ◽  
Animal Health ◽  
Small Ruminants ◽  
Population Connectivity ◽  
Amino Acid Sequences ◽  
Strain Level ◽  
Teladorsagia Circumcincta ◽  
Geographical Regions

Abstract Background Haemonchus contortus and Teladorsagia circumcincta are among the two most pathogenic internal parasitic nematodes infecting small ruminants, such as sheep and goats, and are a global animal health issue. Accurate identification and delineation of Haemonchidae species is essential for development of diagnostic and control strategies with high resolution for Trichostrongyloidea infection in ruminants. Here, we describe in detail and compare the complete mitochondrial (mt) genomes of the New Zealand H. contortus and T. circumcincta field strains to improve our understanding of species- and strain-level evolution in these closely related roundworms. Methods In the present study, we performed extensive comparative bioinformatics analyses on the recently sequenced complete mt genomes of the New Zealand H. contortus NZ_Hco_NP and T. circumcincta NZ_Teci_NP field strains. Amino acid sequences inferred from individual genes of each of the two mt genomes were compared, concatenated and subjected to phylogenetic analysis using Bayesian inference (BI), Maximum Likelihood (ML) and Maximum Parsimony (MP).Results The AT-rich mt genomes of H. contortus NZ_Hco_NP and T. circumcincta NZ_Teci_NP are 14,001 bp (A+T content of 77.4 %) and 14,081 bp (A+T content of 77.3 %) in size, respectively. All 36 of the typical nematode mt genes are transcribed in the forward direction in both species and comprise of 12 protein-encoding genes (PCGs), 2 ribosomal RNA (rrn) genes, and 22 transfer RNA (trn) genes. The secondary structures for the 22 trn genes and two rrn genes differ between H. contortus NZ_Hco_NP and T. circumcincta NZ_Teci_NP, however the gene arrangements of both are consistent with other Trichostrongylidea sequenced to date. Conclusions Comparative analyses of the complete mitochondrial nucleotide sequences, PCGs, A+T rich and non-coding repeat regions of H. contortus NZ_Hco_NP and T. circumcincta NZ_Teci_NP further reinforces the high levels of diversity and gene flow observed among Trichostrongylidea, and supports their potential as ideal markers for strain-level identification from different hosts and geographical regions with high resolution for future studies. The complete mt genomes of H. contortus NZ_Hco_NP and T. circumcincta NZ_Teci_NP presented here provide useful novel markers for further studies of the meta-population connectivity and the genetic mechanisms driving evolution in nematode species.

scholarly journals From Alba to Aotearoa: Profiling New Zealand's Scots Migrants, 1840-1920

2021 ◽  
Author(s):  
◽  
Rebecca A. Lenihan
Keyword(s):  
New Zealand ◽  
Quantitative Analysis ◽  
Internal Migration ◽  
Return Migration ◽  
Death Certificates ◽  
Qualitative Case Studies ◽  
Key Characteristics ◽  
Genealogical Data ◽  
White Settlers ◽  
Core Questions

<p><b>While New Zealand has been described as more Scottish than any other country beyond Scotland, and Scots consistently made up nearly 20 per cent of the immigrant population of New Zealand to 1920, as a group New Zealand's Scots migrants have remained relatively blurred. The distinctive national backgrounds of New Zealand's British migrants have seldom been recognised in general histories or in specialist studies of migration to the country, migrants having tended to be categorised as 'British' and 'Non-British', leading to what Akenson aptly described as the 'lumpingof all white settlers into a spurious unity.' This thesis, conceived as part of a larger research project investigating the experiences and contributions of Scots in New Zealand, seeks to establish key characteristics of the Scottish migrants arriving between 1840 and 1920. Five core questions are addressed: 'from where in Scotland did they come?', 'who came?', 'when?', 'in what numbers?', and 'where did they settle?'.</b></p> <p>While previous studies have suggested partial answers to some of these questions, the present research offers a more full and detailed profile of New Zealand's Scots migrants than has previously been available. Critically, it takes the earlier findings further. Though the investigation has been based primarily upon statistical analysis ofa genealogically-sourced database of 6,612 migrants, quantitative analysis has beensupplemented by qualitative case studies. Comparison with a second set of data derived from death certificates has enabled a testing of the validity of genealogical data as a source for migration studies. In addition to the five central questions around which the thesis is structured, the study also addresses issues of internal migration within Scotland, emigration to otherdestinations prior to arrival in New Zealand, individual and generational occupationalmobility, chain and cluster migration among Shetland migrants, and return migration.</p>

scholarly journals Phylogeny, Phylogeography and Population Connectivity of Lessonia (Phaeophyceae)

2021 ◽  
Author(s):  
◽  
Peter Martin
Keyword(s):  
New Zealand ◽  
South America ◽  
Cryptic Species ◽  
Population Connectivity ◽  
Disjunct Distribution ◽  
South American ◽  
Rocky Shores ◽  
South American Species ◽  
Cook Strait ◽  
Algal Genus

<p>The brown algal genus Lessonia is distributed in the Southern Hemisphere where it can form dominant kelp beds on the exposed rocky shores of New Zealand, South America and Tasmania. Its disjunct distribution within the West Wind Drift contrasts with the view that it is a poor disperser. Apart from studies in Chile, where it is an economically important genus, little is known about Lessonia and in some areas even the number of species is unknown. Using different genetic markers I examined the phylogeny, phylogeography, and the connectivity of populations in Lessonia. Using the literature, species affiliations and nomenclatural problems have been investigated. Combining the sequences of three mitochondrial, one chloroplast and two nuclear markers, a supermatrix approach was used to investigate the phylogenetic relationship and the timing of speciation for all known Lessonia species. The Australasian Lessonia species form a clade within a paraphyletic grouping of South American species. Radiation in Lessonia occurred about 5 Mya at the beginning of the Pliocene and rapid radiation took place in Australasia 3.5 Mya. The data also revealed cryptic species within a L. variegata species complex. Further analysis within the Australasian clade, using mitochondrial (atp8-sp) and chloroplast (rbc-sp) markers and wider sampling (469 individuals from 57 sample sites) supported four cryptic species and revealed localized distribution for all Australasian lineages. Genetic breaks between Lessonia lineages corresponded well to known biogeographic regions and could be correlated to the geographic structure of New Zealand at the end of the Pliocene. The Cook Strait region was analysed more closely with newly developed microsatellite markers to test the influence of geographic breaks (Cook Strait and Palliser Bay) on the connectivity of populations. The results suggested that connectivity depends on the width of unsuitable habitat, and within inner Cook Strait it is facilitated by sometimes strong tidal flows that create turbulences and unique current patterns. The results implied that rafting is an important mean of dispersal. The study of the early literature on Lessonia supported the new lectotypification of L. flavicans but revealed that L. frutescens and possibly L. ovata (supported by images of rediscovered herbarium material) are synonymous to L. searlesiana and as the older epithets they should have priority. Suggestions have been made for the lectotypification of L. fuscescens and L. ovata. In general Lessonia shows non-overlapping distribution in Australasia but overlapping distribution in South America. Despite being a poor disperser, indicated by fine scale genetic structure, Lessonia is also able to connect populations over wide areas of unsuitable habitats.</p>

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