Predation Risk within Fishing Gear and Implications for South Australian Rock Lobster Fisheries

Briceño, Felipe; Linnane, Adrian; Quiróz, Juan Carlos; Gardner, Caleb; Pecl, Gretta T.

doi:10.1371/journal.pone.0139816

Cited by 10 publications

(8 citation statements)

References 37 publications

(56 reference statements)

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“…Therefore, and based on this information, our study suggests that P. cordiformis and P. kermadecensis would remain as the correct names. Indeed, the name P. cordiformis has been consistently used in several studies recently carried out in New Zealand and Australia (see Carrasco, 2014;Orbach and Kirchner, 2014;Briceño et al, 2015Briceño et al, , 2016. In the present study, most New Zealand octopodids (P. cordiformis, O. campbelli, O. huttoni and O. mernoo) were found within Clade 3 (see Figure 3), sharing a common ancestor with other Pacific species from different genera (Grimpella, Octopus, Robsonella, and Scaeurgus).…”

Section: New Zealand Octopus Systematicssupporting

confidence: 60%

Systematics and Phylogenetic Relationships of New Zealand Benthic Octopuses (Cephalopoda: Octopodoidea)

et al. 2020

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The systematics of the New Zealand octopods have only been reviewed twice in the last 100 years. In these revisions many species have been provisionally classified in the genus Octopus. Recent genetic studies have synonymized some New Zealand species with octopuses from other regions. The present study investigates the systematics and phylogeny of octopuses from New Zealand using eighty eight specimens, three mitochondrial genes (16S rRNA, cytochrome c oxidase subunit I, and cytochrome c oxidase subunit III) and one nuclear gene (Rhodopsin). Forty-four new octopod DNA sequences (belonging to 13 species) were included, adding to the 83 existing sequences from GenBank. All sequences were used to generate phylogenetic trees based on Maximum Likelihood (ML) and Bayesian inference (BI), with a data set composed by 97 species, including octopod sister groups and Vampyroteuthis infernalis as an outgroup. Gene tree and species delimitation analyses revealed a distinct genetic difference between two sympatric Graneledone subspecies, which we propose as valid species. Muusoctopus tangaroa is a sister species of M. thielei from Kerguelen; while Enteroctopus zealandicus forms a clade with E. megalocyathus from South America and E. dofleini from the North Pacific. Similarly, Octopus campbelli, O. huttoni, and O. mernoo form a monophyletic group with Robsonella fontaniana from South America, Scaeurgus unicirrhus from the Atlantic and O. pallidus from Australia. Pinnoctopus cordiformis is close to Grimpella thaumastocheir and several species of Octopus sensu lato as in previous phylogenetic studies. This study suggests that octopuses from New Zealand have different phylogenetic and biogeographic origins and represent independent radiations into this region.

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Section: New Zealand Octopus Systematicssupporting

confidence: 60%

Systematics and Phylogenetic Relationships of New Zealand Benthic Octopuses (Cephalopoda: Octopodoidea)

et al. 2020

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“…The review focused on sharks, odontocetes (toothed whales) and pinnipeds, although other taxa such as cephalopods and teleosts may also be involved in depredation (e.g. Briceño, Linnane, Quiroz, Gardner, & Pecl, 2015; Raphael, Joseph, & Edwin, 2017). Case studies and reviews were considered, and returns were included if explicitly addressing depredation, that is: reporting occurrences of sharks and/or marine mammals feeding on catches on or in fishing gear, and/or assessing the extent of such occurrences, their socio‐economic or ecological impacts, and/or investigating ways to mitigate the issue.…”

Section: Data Collection and Synthesismentioning

confidence: 99%

When large marine predators feed on fisheries catches: Global patterns of the depredation conflict and directions for coexistence

et al. 2020

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The sustainable mitigation of human-wildlife conflicts has become a major societal and environmental challenge globally. Among these conflicts, large marine predators feeding on fisheries catches, a behaviour termed "depredation," has emerged concomitantly with the expansion of the world's fisheries. Depredation poses threats to both the socioeconomic viability of fisheries and species conservation, stressing the need for mitigation. This review synthesizes the extent and socio-ecological impacts of depredation by sharks and marine mammals across the world, and the

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“…Trap-or pot-based fishing activities for lobsters enhance their predation risk because these activities can reduce the lobster's capacity to escape predators and the act of fishing can also attract key predators such as octopus. The southern rock lobster Jasus edwardsii is highly exposed to predation risk by the Maori octopus Octopus maorum on fishing grounds in southern Australia (Brock & Ward 2004;Hunter et al 2005;Harrington et al 2006;Briceño et al 2015;Briceño et al 2016) and New Zealand (Ritchie, 1972). Octopus hunting strategy is more effective when lobsters are in confined spaces (e.g.…”

Section: Introductionmentioning

confidence: 99%

Changes in metabolic rate of spiny lobster under predation risk

Briceño¹,

Polymeropoulos²,

Fitzgibbon³

et al. 2018

Mar. Ecol. Prog. Ser.

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Animals exposed to high levels of predation risk may exhibit a variety of changes to life history, behaviour, physiology and morphology that can affect survival. Under predation threat, prey individuals may increase their aerobic metabolism to allocate energy toward escaping behaviours (e.g. 'fight-or-flight'), although the associated energetic cost of such behaviour remains largely unknown. Lobsters display different anti-predatory responses such as sheltering and/or escaping, but the underlying energetic cost of such responses has not been examined. Here, we tested the aerobic, metabolic response of lobsters (Jasus edwardsii) in the presence of predator (octopus, Octopus maorum) olfactory cues (kairomones) using open-flow respirometry. We examined the routine metabolic rate of lobsters in response to predator kairomones during the active phase of their diurnal cycle (at night) to examine the physiological anti-predator response when lobsters are most vulnerable. Our findings revealed that lobsters strongly reduced their routine metabolism for three hours by 31.4 % when exposed to kairomones in comparison to controls. Our findings suggest that under laboratory conditions, lobsters exposed to predation risk during the night reduce their activity to avoid predators; i.e., the anti-predator mechanism is 'to be immobile or inactive' rather than a 'fight-or-flight' response. Lobster immobility may be an energetically advantageous predation response in the short term, however prolonged or regular predator exposure could have significant consequences on foraging time and foraging area in turn, with an overall impact on lobster performance particularly in environments with high predator presence such as fishing grounds.

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Predation Risk within Fishing Gear and Implications for South Australian Rock Lobster Fisheries

Cited by 10 publications

References 37 publications

Systematics and Phylogenetic Relationships of New Zealand Benthic Octopuses (Cephalopoda: Octopodoidea)

Systematics and Phylogenetic Relationships of New Zealand Benthic Octopuses (Cephalopoda: Octopodoidea)

When large marine predators feed on fisheries catches: Global patterns of the depredation conflict and directions for coexistence

Changes in metabolic rate of spiny lobster under predation risk

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