The lunar cycle determines availability of coral‐reef fishes at fish markets

Bos, Arthur R.; Gumanao, Girley S.

doi:10.1111/j.1095-8649.2012.03454.x

Cited by 16 publications

(7 citation statements)

References 19 publications

(19 reference statements)

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“…In addition, catch success was dependent upon environmental regimes. New moon phases and other environmental cycles are known to increase fishing success and landings, but the degree of dependence on favorable environmental regimes can grow as stocks become depleted [ 19 , 57 , 58 ]. Here, catch success for many mid-size predators, invertivores, and some herbivores was dependent upon seasonality and moon phases, albeit to a lesser degree than in other Micronesian jurisdictions [ 30 ].…”

Section: Discussionmentioning

confidence: 99%

Human and environmental gradients predict catch, effort, and species composition in a large Micronesian coral-reef fishery

et al. 2018

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The consistent supply of fresh fish to commercial markets may mask growing fishing footprints and localized depletions, as fishing expands to deeper/further reefs, smaller fish, and more resilient species. To test this hypothesis, species-based records and fisher interviews were gathered over one year within a large, demand-driven coral-reef fishery in Chuuk, Micronesia. We first assessed catch statistics with respect to high windspeeds and moon phases that are known to constrain both catch and effort. While lower daily catch success was predicted by higher windspeeds and greater lunar illumination, total daily landings fluctuated less than fishing success across environmental gradients. Instead, daily landings were mainly driven by the number of flights from Chuuk to Guam (i.e., international demand). Given that demand masked local drivers of overall catch volume, we further evaluated species-based indicators of fisheries exploitation. Most target species (75%) had either a positively skewed size distribution or proportional contributions that were dependent upon favorable conditions (i.e. season and moon phases). Skewed size distributions indicated truncated growth associated with fishing mortality, and in turn, suggested that size-based management policies may be most effective for these species. In contrast, environmentally-constrained catch success indicated species that may be more susceptible to growing fishing footprints and may respond better to gear/quota/area policies compared to size policies. Species-based responses offered a simplified means to combine species into fisheries management units. Finally, a comparison of commercial and subsistence landings showed higher vulnerability to fishing among species preferentially targeted by commercial fisheries, offering new insights into how commercial harvesting can disproportionately impact resources, despite having lower annual catch volumes.

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Section: Discussionmentioning

confidence: 99%

Human and environmental gradients predict catch, effort, and species composition in a large Micronesian coral-reef fishery

et al. 2018

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“…Moreover, marine biological research in the Davao Gulf has only been initiated in relatively recent years (e.g. Mueller et al., ; Bos and Gumanao, ). Considering the above, it was hypothesized that fish populations in the Davao Gulf could provide valuable information on lengths and weights of fishes uncommon in other seas in the Indo‐Pacific region.…”

Section: Introductionmentioning

confidence: 99%

Length-weight and length-length relationships of 139 Indo-Pacific fish species (Teleostei) from the Davao Gulf, Philippines

et al. 2016

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Length-weight relationships (LWRs) of 139 coral reef and pelagic fish species (representing 34 fish families) were calculated based on 3806 individuals measured at local fish markets near the Davao Gulf in the southern Philippines during weekly visits between March 2009 and July 2011, as well as in June 2012. Fishes were caught with a variety of fishing methods, corroborated by abrasions and injuries. Fortyseven of 139 LWRs were firstly reported and new to science. The mean slope b of the LWRs was 3.035, indicating that the majority of studied species followed isometric growth. Standard length -total length relationships were calculated for all measured fish species. Additionally, standard lengthfork length relationships are presented for 108 species. Moreover, fifteen new records of maximum fish length and weight are reported.

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“…Coral reefs in the Philippines are located within the Coral Triangle (Hoeksema, ) and its fish fauna is one of the most diverse in the world (Carpenter & Springer, ; Weeks, Russ, Alcala, & White, ). Most ichthyological knowledge is available from the central and northern islands of the archipelago, whereas research in the southern islands has only recently been intensified (Bos & Gumanao, ; Gumanao, Saceda‐Cardoza, Mueller, & Bos, ). Although more than 1700 fish species have been identified in the Philippines (Carpenter & Springer, ), new records (e.g.…”

Section: Discussionmentioning

confidence: 99%

First record of the rare anthiine Meganthias kingyo (Kon, Yoshino & Sakurai, 2000) (Serranidae) from the Philippines

Saceda-Cardoza

Bos

2017

J Appl Ichthyol

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The lunar cycle determines availability of coral‐reef fishes at fish markets

Cited by 16 publications

References 19 publications

Human and environmental gradients predict catch, effort, and species composition in a large Micronesian coral-reef fishery

Human and environmental gradients predict catch, effort, and species composition in a large Micronesian coral-reef fishery

Length-weight and length-length relationships of 139 Indo-Pacific fish species (Teleostei) from the Davao Gulf, Philippines

First record of the rare anthiine Meganthias kingyo (Kon, Yoshino & Sakurai, 2000) (Serranidae) from the Philippines

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