Annals of the South African Museum, Volume 90The Museum, 1983 - Natural history |
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Page 51
... individual longevity is 9 years . Age ( x ) ( years ) Number of live individuals ( lx ) Number of dead individuals ( dx ) Rate of mortality % ( qx ) 500 400 0-1 500 250 50 1-2 250 25 10 2-3 225 22 10 3-4 203 20 10 4-5 183 37 20 5-6 146 ...
... individual longevity is 9 years . Age ( x ) ( years ) Number of live individuals ( lx ) Number of dead individuals ( dx ) Rate of mortality % ( qx ) 500 400 0-1 500 250 50 1-2 250 25 10 2-3 225 22 10 3-4 203 20 10 4-5 183 37 20 5-6 146 ...
Page 53
... individuals ( lx ) Number of dead individuals ( dx ) Rate of mortality % ( qx ) 0-1 1 000 700 70 1-2 300 150 50 2-3 150 75 50 3-4 75 30 40 4-5 45 9 20 5-6 36 7 20 6-7 29 6 20 7-8 23 12 50 8-9 11 11 100 9-10 0 0 NUMBER OF INDIVIDUALS ...
... individuals ( lx ) Number of dead individuals ( dx ) Rate of mortality % ( qx ) 0-1 1 000 700 70 1-2 300 150 50 2-3 150 75 50 3-4 75 30 40 4-5 45 9 20 5-6 36 7 20 6-7 29 6 20 7-8 23 12 50 8-9 11 11 100 9-10 0 0 NUMBER OF INDIVIDUALS ...
Page 54
... individuals who die each year will be quite similar in shape to the age profile of those who remain alive ... individuals born at more or less the same time ; second , a census may be conducted of all those individuals alive at any one ...
... individuals who die each year will be quite similar in shape to the age profile of those who remain alive ... individuals born at more or less the same time ; second , a census may be conducted of all those individuals alive at any one ...
Contents
Systematic discussion | 41 |
Synopsis of the Afrotropical genera of Philosciidae | 47 |
INTRODUCTION | 51 |
Copyright | |
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Common terms and phrases
age classes age profiles age structure Agulhas Bank alluaudi Boule Antenna Antennular Antennule Apanthura apex attritional Barnard basal body chamber Budde-Lund capensis carpus catastrophic cephalon Chrysomya clavi coiling Collignon Coniacian croceipalpis crown height Damalacra Diagnosis diameter distal dorsal view Elandsfontein endite endopod endopodite Exiteloceras exopodite False Bay female Figure flagellum Forresteria Forresteria fossil genera genus Haliophasma Hoepen Holotype instar larva intertidal Isopoda Kensley Langebaan Langebaanweg large mammals lateral tubercles Lemoine & Thévenin Leptanthura lobe Malacanthura male Mandible margin Matsumoto Maxilliped mid-dorsal mortality profiles Nahia Natal Natalscia Neancyloceras non-ovig Nyanzachoerus ovig paratypes Pelorovis pereonites Pereopods 4-7 Philoscia Pleon Pleopod Pleopod 1 exopod population posterior propodal palm Raphicerus ribs rounded Saldanha Bay samples setae South African Museum specimens spines spiracles Taiti Telson third instar tooth Transkei triangular Type material Holotype type species ungulate UNWORN Uropodal Uropodal exopod ventral whorl Yabeiceras Zululand