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Maina JM, Gamoyo M, Adams VM, D'agata S, Bosire J, Francis J, Waruinge D. Aligning marine spatial conservation priorities with functional connectivity across maritime jurisdictions. CONSERVATION SCIENCE AND PRACTICE 2019. [DOI: 10.1111/csp2.156] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Affiliation(s)
- Joseph M. Maina
- Faculty of Science and Engineering, Department of Earth and Environmental SciencesMacquarie University Sydney New South Wales Australia
| | | | - Vanessa M. Adams
- School of Technology, Environments and DesignUniversity of Tasmania Hobart Australia
| | - Stephanie D'agata
- Faculty of Science and Engineering, Department of Earth and Environmental SciencesMacquarie University Sydney New South Wales Australia
| | - Jared Bosire
- United Nations Environment, Ecosystems DivisionNairobi Convention Nairobi Kenya
| | - Julius Francis
- Western Indian Ocean Marine Science Association Zanzibar Tanzania
| | - Dixon Waruinge
- United Nations Environment, Ecosystems DivisionNairobi Convention Nairobi Kenya
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Swimming Abilities of Temperate Pelagic Fish Larvae Prove that they May Control their Dispersion in Coastal Areas. DIVERSITY 2019. [DOI: 10.3390/d11100185] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The Sense Acuity and Behavioral (SAAB) Hypothesis proposes that the swimming capabilities and sensorial acuity of temperate fish larvae allows them to find and swim towards coastal nursery areas, which are crucial for their recruitment. To gather further evidence to support this theory, it is necessary to understand how horizontal swimming capability varies along fish larvae ontogeny. Therefore, we studied the swimming capability of white seabream Diplodus sargus (Linnaeus, 1758) larvae along ontogeny, and their relationship with physiological condition. Thus, critical swimming speed (Ucrit) and the distance swam (km) during endurance tests were determined for fish larvae from 15 to 55 days post-hatching (DPH), and their physiological condition (RNA, DNA and protein contents) was assessed. The critical swimming speed of white seabream larvae increased along ontogeny from 1.1 cm s−1 (15 DPH) to 23 cm s−1 (50 and 55 DPH), and the distance swam by larvae in the endurance experiments increased from 0.01 km (15 DPH) to 86.5 km (45 DPH). This finding supports one of the premises of the SAAB hypothesis, which proposes that fish larvae can influence their transport and distribution in coastal areas due to their swimming capabilities. The relationship between larvae’s physiological condition and swimming capabilities were not evident in this study. Overall, this study provides critical information for understanding the link between population dynamics and connectivity with the management and conservation of fish stocks.
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