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Transitions during cephalopod life history: the role of habitat, environment, functional morphology and behaviour

journal contribution
posted on 2023-05-18, 07:44 authored by Robin, J-P, Roberts, M, Zeidberg, L, Bloor, I, Rodriguez, A, Briceno, F, Downey, N, Mascaro, M, Navarro, M, Guerra, A, Hofmeister, J, Barcellos, DD, Lourenco, SAP, Roper, CFE, Moltschaniwskyj, NA, Green, CP, Mather, J
Cephalopod life cycles generally share a set of stages that take place in different habitats and are adapted to specific, though variable, environmental conditions. Throughout the lifespan, individuals undertake a series of brief transitions from one stage to the next. Four transitions were identified: fertilisation of eggs to their release from the female (1), from eggs to paralarvae (2), from paralarvae to subadults (3) and from subadults to adults (4). An analysis of each transition identified that the changes can be radical (i.e. involving a range of morphological, physiological and behavioural phenomena and shifts in habitats) and critical (i.e. depending on environmental conditions essential for cohort survival). This analysis underlines that transitions from eggs to paralarvae (2) and from paralarvae to subadults (3) present major risk of mortality, while changes in the other transitions can have evolutionary significance. This synthesis suggests that more accurate evaluation of the sensitivity of cephalopod populations to environmental variation could be achieved by taking into account the ontogeny of the organisms. The comparison of most described species advocates for studies linking development and ecology in this particular group.

History

Publication title

Advances in Marine Biology

Volume

67

Pagination

361-437

ISSN

0065-2881

Department/School

Institute for Marine and Antarctic Studies

Publisher

Academic Press Inc Elsevier Science

Place of publication

525 B St, Ste 1900, San Diego, USA, Ca, 92101-4495

Rights statement

Copyright 2014 Elsevier

Repository Status

  • Restricted

Socio-economic Objectives

Marine biodiversity

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    University Of Tasmania

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