Summary of growth rate data and analyses available for the Tristan da Cunha group of islands

Pollock 1981 (repeated in Pollock 1991): provides moult increment summary data for 10mm grouped lobsters for all four islands, males and females separate. No regression analyses

Updated 2014 assessments for west coast rock lobster

This document reports the updated assessment of the five super-areas of the west coast rock lobster resource. The previous assessment was conducted in 2013 (see Johnston 2013)

An outline of two OMP approaches for management of the West Coast rock lobster

The table below outlines the main differences between two proposed OMP approaches for the management of the west coast rock lobster. The first is the existing OMP, and the second is a possible alternative approach. The table lists the main features only of each OMP approach. Further features could be added to the alternative approach (Areal OMPs)

Further updated SCRL assessment results for alternative selectivity functions

This document extends previous assessments in two ways: • It changes the model so that Bexp mid-year takes into account of half of the “selectivity weighted fishing mortality losses” - see Table 1 for the changes this makes to results. • It investigates alternate selectivity functions –see Tables 2 and 3 and Figures 1-4

Updated catch length frequencies for the Tristan group of islands using factory pack category data

Reliable factory processing records of lobsters caught at all four islands of the Tristan group are available since 20011 . These “pack category” data record the number of lobsters that fall into different packing categories. There are two types of product for which data have been collected: “tails” (where only the tails are packed into cartons) and “whole” where either whole cooked or whole raw frozen lobsters are packed. The pack-categories however refer to certain weight ranges, with different categories applying to “tails” and to “whole” product. Tables 1a and b list the pack categories and the associated weight ranges. Johnston (2010) applied the method described below to convert factory pack category data into catch length frequencies for data for the period 2001 – 2008. Recently, two further year’s of factory pack category records have become available, and this document serves to update the work presented in Johnston (2010) with the 2009 and 2010 data

Further updated SCRL assessment results for alternative selectivity functions

This document extends previous assessments in two ways: • It changes the model so that Bexp mid-year takes into account of half of the “selectivity weighted fishing mortality losses” - see Table 1 for the changes this makes to results. • It investigates alternate selectivity functions –see Tables 2 and 3 and Figures 1-4

Initial updated 2015 assessments for west coast rock lobster

This document reports initial updated assessments for the five super-areas which are considered as separate populations of the west coast rock lobster resource. The previous assessment was conducted in 2014 (see Johnston 2014). The only “new” data available since the 2014 assessment are the FIMS catch-at-length and F% data for 2010-2013 (i.e. 4 more years of these data)

Summary of the data and information available for the assessment of breeding stock C of the Southern Hemisphere humpback whales

• Fair amount of evidence to suggest three possible substocks C1 (Mozambique, and South African East Coast migration corridor), C2 (Mayote, Comores and other Islands of the Mozambique Channel) and C3 (Madagascan waters including Antongil Bay) • SC/A06/HW38 – suggests separation of C1 from the other, and lumping C2 and C3 • C2 considered smal

Creating catch length frequencies for the Tristan group of islands using factory pack category data

Reliable factory processing records of lobsters caught at all four islands of the Tristan group are available since 2001. These “pack category” data record the number of lobsters that fall into different packing categories. There are two types of product for which data have been collected: “tails” (where only the tails are packed into cartons) and “whole” where either whole cooked or whole raw frozen lobsters are packed. The pack-categories however refer to certain weight ranges, with different categories applying to “tails” and to “whole” product. Tables 1a and b list the pack categories and the associated weight ranges