Relative pleopod length as an indicator of size at sexual maturity in slipper (Scyllarides squammosus) and spiny Hawaiian (Panulirus marginatus) lobsters

Body size at gonadal maturity is described for females of the slipper lobster (Scyllarides squammosus) (Scyllaridae) and the endemic Hawaiian spiny lobster (Panulirus marginatus) (Palinuridae) based on microscopic examination of histological preparations of ovaries. These data are used to validate several morphological metrics (relative exopodite length, ovigerous condition) of functional sexual maturity. Relative exopodite length (“pleopod length”) produced consistent estimates of size at maturity when evaluated with a newly derived statistical application for estimating size at the morphometric maturation point (MMP) for the population, identified as the midpoint of a sigmoid function spanning the estimated boundaries of overlap between the largest immature and smallest adult animals. Estimates of the MMP were related to matched (same-year) characterizations of sexual maturity based on ovigerous condition — a more conventional measure of functional maturity previously used to characterize maturity for the two lobster species. Both measures of functional maturity were similar for the respective species and were within 5% and 2% of one another for slipper and spiny lobster, respectively. The precision observed for two shipboard collection series of pleopod-length data indicated that the method is reliable and not dependent on specialized expertise. Precision of maturity estimates for S. squammosus with the pleopod-length metric was similar to that for P. marginatus with any of the other measures (including conventional evidence of ovigerous condition) and greatly exceeded the precision of estimates for S. squammosus based on ovigerous condition alone. The two measures of functional maturity averaged within 8% of the estimated size at gonadal maturity for the respective species. Appendage-to-body size proportions, such as the pleopod length metric, hold great promise, particularly for species of slipper lobsters like S. squammosus for which there exist no other reliable conventional morphological measures of sexual maturity. Morphometric proportions also should be included among the factors evaluated when assessing size at sexual maturity in spiny lobster stocks; previously, these proportions have been obtained routinely only for brachyuran crabs within the Crustacea.

Application of the Leslie Model to Commercial Catch and Effort of the Slipper Lobster, Scyllarides squammosus, Fishery in the Northwestern Hawaiian Islands

Commercial catch and effort data were fit to the Leslie model to estimate preexploitation abundance and the catchability coefficient of slipper lobster, Scyllarides squammosus, in the Northwestern Hawaiian Islands (NWHI). A single vessel fished for 34 consecutive days in the vicinity of Laysan Island and caught 126,127 total slipper lobster in 36,170 trap hauls. Adjusted catch of legal slipper lobster dropped from a high of 3.70 to 1.16 lobster per trap haul. Preexploitation abundance at Laysan Island was an estimated 204,000 legal slipper lobster, which was extrapolated to yield an estimate of 1.2 X 106 to 3.8 X 106 lobster for the entire NWHI slipper lobster fishery.

The dancer, the choreographer and modern dance scholarship: a critical reading

This paper undertakes a critical re-examination of the ways in which dance-making relationships between the dancer and the choreographer in American modern dance have been conceptualised in dance discourses. The essay proposes that a defining aspect of modern dance practices (from the moment that, after Duncan and Fuller, it became a group as well as a solo form) was the dancing together of the choreographer and the dancer(s) as the central mode of dance creation and transmission. In dance discourses, however, this dancing relationship is frequently not acknowledged. Texts by dance scholars Susan Leigh Foster, Amy Koritz and Randy Martin which draw on theoretical frameworks from outside dance are analysed in terms of the ways the theoretical frameworks that underpin them both make it possible to raise the question of the nature of the dance-making relationship while at the same time can also make the dancer's and the choreographer's dancing together invisible or unrepresentable. The analysis shows how scholarly discourses and the theoretical frameworks upon which they are built are already invested in regimes of intelligibility and visibility which have consequences for the representation of modern dance. This analysis forms the basis for proposing the need for a non-individualised, inter-subjective and intercorporeal understanding of the dancer and the choreographer and their relationship in modern dance.

Rope dancer : a novel and accompanying essay

The thesis combines a novel and a critical essay. The novel tells of a group of people in Melbourne, some of whom write, party, have sex, take drugs, go climbing and die. The essay discusses four aspects of the novel: climbing fiction, Nietzsche in literature, place and fiction and character as hero.

The idiosyncratic movement potential of the dancer's subject body in the work "Deep map"

An investigation into choreographic processes employed within contemporary modern dance. This involved the exploration of working methods used in the making of "Deep map" nos.1, 2 & 3, presented in Melbourne from 1997-2000. The focus of that method was the placement of the dancer as 'subject' whilst maintaining the role of the choreographer as 'auteur'.

Slipper saga begs the question – do we need a speaker at all?

Speaker of the House of Representatives Peter Slipper has stepped aside following allegations of sexual harassment and the misuse of cab-charge vouchers.