G. Jackson

Publications7
h-index6
Citations282
Highly Influential Citations21
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Age, growth, and maturation of Lolliguncula brevis (Cephalopoda: Loliginidae) in the northwestern Gulf of Mexico with a comparison of length-frequency versus statolith age analysis
Over 2000 individuals of Lolliguncula brevis were collected from 1975 to 1979 in the northern Gulf of Mexico off the Texas coast; their growth and reproductive biology were analyzed by traditional ...
Effects of the 1995 and 1998 mass mortality events on the spawning biomass of sardine, Sardinops sagax, in South Australian waters
TLDR
The introduction of untreated imported frozen fish products into the marine environment may be one of the mechanisms that has facilitated the range shifts of pathogens that have been associated with the increased frequency of mass mortalities due to disease in the ocean.
Have recent mass mortalities of the sardine Sardinops sagax facilitated an expansion in the distribution and abundance of the anchovy Engraulis australis in South Australia
TLDR
Results indicate that fluctuations in the relative abundance of S. sagax and Engraulis spp.
The nomenclatural status, ontogeny and morphology of Pholidoteuthis massyae (Pfeffer, 1912) new comb (Cephalopoda: Pholidoteuthidae)
TLDR
A conjectural account of the mechanics of mating in P. massyae is provided based on the nature of spermatophore insertion in the female mantle, and modification to the terminal region of the male’s genital apparatus.
Currents as environmental constraints on the behavior, energetics and distribution of squid and cuttlefish
The energy available in an ecosystem can often be smoothly matched to physiological requirements through behavioral changes. Tracking projects in Spencer Gulf and Great Barrier Reef (GBR) Lagoon,…
Cephalopod fisheries: a future global upside to past overexploitation of living marine resources? Results of an international workshop, 31 August – 2 September 1997, Cape Town, South Africa
TLDR
In the interim, cephalopods can be managed using similar principles to those applied to short-lived fish species, and constant proportion harvest strategies were identified as the most effective.
Geology Fort George River-Kaniapiskau River, Québec