Timing within the reproduction cycle modulates the efficiency of village-based crown-of-thorns starfish removal

Dumas, Pascal; Moutardier, Grégoire; Ham, J.; Kaku, Rocky; Gereva, Sompert; Lefêvre, Jérôme; Adjeroud, Mehdi

doi:10.1016/j.biocon.2016.10.027

Cited by 15 publications

(13 citation statements)

References 44 publications

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“…The Gonado-Somatic Index (GSI) was used as a proxy of sexual maturity; for every animal, it was estimated at the end of the second fertilisation trial from each year using the following formula (Dumas et al, 2016): Where:…”

Section: Oocytes Metrics Fertilisation Success and Gonado-somatic Indexmentioning

confidence: 99%

Temperature affects the reproductive outputs of coral-eating starfish Acanthaster spp. after adult exposure to near-future ocean warming and acidification

Hüe

Chateau

Lecellier

et al. 2020

Marine Environmental Research

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Section: Oocytes Metrics Fertilisation Success and Gonado-somatic Indexmentioning

confidence: 99%

Temperature affects the reproductive outputs of coral-eating starfish Acanthaster spp. after adult exposure to near-future ocean warming and acidification

Hüe

Chateau

Lecellier

et al. 2020

Marine Environmental Research

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“…once they become established [247]. Timely intervention and the containment of outbreaks before they can spread may, therefore, save greatly on management costs and increase management effectiveness (e.g., [148,251]). Established disaster funds have proven successful in the Australian agriculture sector to support pro-active monitoring, early detection and early prevention of locust plagues [252].…”

Section: Question 5 (Overarching)-how [Cots] Outbreaks Are Propagatedmentioning

confidence: 99%

Thirty Years of Research on Crown-of-Thorns Starfish (1986–2016): Scientific Advances and Emerging Opportunities

et al. 2017

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Abstract:Research on the coral-eating crown-of-thorns starfish (CoTS) has waxed and waned over the last few decades, mostly in response to population outbreaks at specific locations. This review considers advances in our understanding of the biology and ecology of CoTS based on the resurgence of research interest, which culminated in this current special issue on the Biology, Ecology and Management of Crown-of-Thorns Starfish. More specifically, this review considers progress in addressing 41 specific research questions posed in a seminal review by P. Moran 30 years ago, as well as exploring new directions for CoTS research. Despite the plethora of research on CoTS (>1200 research articles), there are persistent knowledge gaps that constrain effective management of outbreaks. Although directly addressing some of these questions will be extremely difficult, there have been considerable advances in understanding the biology of CoTS, if not the proximate and ultimate cause(s) of outbreaks. Moving forward, researchers need to embrace new technologies and opportunities to advance our understanding of CoTS biology and behavior, focusing on key questions that will improve effectiveness of management in reducing the frequency and likelihood of outbreaks, if not preventing them altogether.

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“…Flexible responses may be more likely when governance is straightforward and greater management responsibility is given to communities. In Vanuatu, COTS removals are often decided 'on the fly' and implemented at village scale by the traditional authorities, in particular chiefs and chief 's councils 36 . For instance, community-based cleanups supervised by qualified officers of the Vanuatu Fisheries department could be organized through minimal administration effort following COTS reports in Emao, Aore and Emae islands (VAN 10, VAN 16 & VAN21).…”

Section: Discussionmentioning

confidence: 99%

Citizen Science, a promising tool for detecting and monitoring outbreaks of the crown-of-thorns starfish Acanthaster spp.

Dumas

Fiat²,

Durbano³

et al. 2020

Sci Rep

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Monitoring potentially devastating coral-eating crown-of-thorns starfish (COTS) populations at scales relevant to management is a challenging task. Here, we investigated a citizen science approach to detect COTS outbreaks and prioritize management responses. Between 2014 and 2018, 38 000 COTS were recorded through 641 online observation reports submitted across New Caledonia, Vanuatu and Fiji by private stakeholders (51%), NGOs (22%), business operator (11%), research/government agencies (16%). COTS were observed in multiple areas, including in remote/inhabited reefs where they had never been reported. A three-level classification was developed to discriminate risk areas and propose operational guidelines to streamline management actions. About two-thirds of reports had low abundances (<10 starfish sighted) and could be addressed with low priority. Verification surveys at 65 reef sites confirmed outbreaks in half of the cases, along with high peak densities (7 000 ind.ha −1 ). Combining professional and non-professional observers increased the detection range (+27%) and the number of COTS detections (+129%). Citizen reports were eventually followed by removal campaigns organized within diverse institutional frameworks. While citizen monitoring has intrinsic limitations, we advocate that it constitutes a complementary and promising approach to support the ongoing management efforts in all countries affected by COTS.

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Timing within the reproduction cycle modulates the efficiency of village-based crown-of-thorns starfish removal

Cited by 15 publications

References 44 publications

Temperature affects the reproductive outputs of coral-eating starfish Acanthaster spp. after adult exposure to near-future ocean warming and acidification

Temperature affects the reproductive outputs of coral-eating starfish Acanthaster spp. after adult exposure to near-future ocean warming and acidification

Thirty Years of Research on Crown-of-Thorns Starfish (1986–2016): Scientific Advances and Emerging Opportunities

Citizen Science, a promising tool for detecting and monitoring outbreaks of the crown-of-thorns starfish Acanthaster spp.

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