Paracrangonyx Stebbing, 1899, a genus of New Zealand subterranean amphipods (Crustacea: Amphipoda: Gammaridea)
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Collections of groundwater crustaceans from deep wells near Christchurch, New Zealand, included specimens of Paracrangonyx compactus, a poorly known species that is rarely collected and the genus is re‐diagnosed and P compactus re‐described in more detail.Abstract:
Collections of groundwater crustaceans from deep (20 m) wells near Christchurch, New Zealand, included specimens of Paracrangonyx compactus, a poorly known species that is rarely collected A second undescribed species in this hitherto mono‐specific genus was also present Based on this material, the genus is re‐diagnosed and P compactus re‐described in more detail A new species, P winter bourni, is also established The two species differ appreciably in body form and elongation of the peraeopods, but are remarkably similar in most other respects The genus is now known to be sexually dimorphic in setation of the outer rami of uropods 1–2 Other important generic characters include the absence of calceoli, second gnathopods that are slightly longer than first gnathopods, slightly to greatly reduced coxae that are contiguous to discontiguous, sternal gills medially on peraeonites 2–7, coxal gills and oostegites on peraeonites 2 or 3–6, and glandular uropodsread more
Citations
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Preliminary assessment of crustacean distribution patterns in New Zealand groundwater aquifers
TL;DR: Crustaceans were sampled in 17 groundwater wells at five locations in North and South Islands of New Zealand as discussed by the authors, and the total abundance varied from 1 to 1064 individuals/250 litre sample.
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The Tarndale bully revisited with molecular markers: An ecophenotype of the common bully Gobiomorphus cotidianus (Pisces: Gobiidae)
TL;DR: It is concluded that populations of bullies in the Marlborough tarns are a lake‐locked ecophenotype of the common bully and not a phylogenetic species.
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A reassessment of the phylogenetic utility of genus-level morphological characters in the family Bogidiellidae (Crustacea, Amphipoda), with description of a new species of Eobogidiella Karaman, 1981.
TL;DR: A critical need is pointed towards to resolve relationships within the family using molecular approaches, along with the development of a suite of additional morphological characters for Bogidiellidae.
Whitebait can't jump
Cindy Baker,Richard Allibone +1 more
Abstract: Richard Allibone Most New Zealanders are aware of the annual spring migration of swarms of tiny fish commonly known as whitebait. It is these migrations that prompt many a hopeful angler to sit with nets set on the margins of river mouths for hours at a time. The fish that do not end up on our dinner tables face the task of looking for freshwater habitat to grow and produce the offspring that may, next year, be part of our whitebait fritters.
References
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Rhodamine WT and Bacillus subtilis Transport through an Alluvial Gravel Aquifer
TL;DR: In this article, a field study was conducted to characterize the transport of rhodamine WT dye and endospores of the bacterium Bacillus subtilis through preferential flowpaths in an alluvial gravel aquifer using natural gradient tracer experiments.
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Transport of bacteria and bacteriophages in irrigated effluent into and through an alluvial gravel aquifer
TL;DR: The movement of bacteria and bacteriophages into and through an alluvial gravel aquifer was investigated at a bordered strip effluent irrigation scheme near Christchurch, New Zealand as mentioned in this paper.