Fishing-effort response dynamics in fisheries for short-lived invertebrates

Examining the performance of alternative harvest regulations for short-lived taxa: A case study of Florida Bay scallop management

“…Larger-scale commercial fisheries for such species are often managed using sophisticated pre-season abundance forecasts or in-season depletion estimates (e.g., Rosenberg et al, 1990;Arkhipkin et al, 2015) combined with intensive monitoring of catches and enforcement of catch limits to ensure sufficient spawning escapement. Although recreational fisheries for short-lived species are common and socioeconomically important (Lellis-Dibble et al, 2008;Taylor, 2017;Aguilera, 2018;Ben-Hasan, 2018;Sydeman et al, 2020), these fisheries are more difficult to monitor, assess, and manage than major commercial fisheries. The large, unrestricted pool of potential recreational fishers entering from numerous access points along with limited traditional means of restricting catch (such as using season, length, or bag limits) constrain the available means to manage recreational fisheries for short-lived or annual species.…”

Seasonal rainfall influences reproduction and recruitment of tropical penaeid shrimps: Implications to fisheries management

“…Fast-growing invertebrate species are often managed with seasonal closures because of their common seasonal spikes in abundance or important life-history events. This management strategy is also important because the timing of harvesting for those short-lived species is critical to maximizing yield (Ben-Hasan et al, 2018;Watson & Restrepo, 1995). Indeed, short-lived crustaceans such as the seabob and white shrimps are usually characterized by remarkable seasonal variations in their life cycle, like episodic recruitment, reproduction peaks and significant fluctuations of growth rates over the year (Bauer, 1989;Garcia et al, 2016).…”

Effects of Management on the Profitability of Seasonal Fisheries

“…Seasonality in fishing activity, which is described by the temporal structuring of fish populations and fishery dynamics, is evident in numerous fisheries around the world (Clark, 2010;Bjørndal and Munro, 2012). Such a pattern emerges due to a variety of mechanisms, notably: (i) biomass dynamics, as in seasonal fisheries that arise from harvesting a single or a few recruiting cohorts every year (see, for example, Basson et al, 1996;Dichmont et al, 2003;McAllister et al, 2004;Diamond, 2005;Chen et al, 2007); (ii) seasonal availability/catchability, which is associated with the ontogenetic shifts in fish distribution and hence in vulnerability to being captured (e.g., haddock, saithe, and cod; Smith et al, 2016); and (iii) regulatory initiatives, such as fishing seasons, aimed at avoiding overfishing or maximizing the value of the seasonal catch (e.g., commonly implemented in sport fisheries and in jurisdictions like the southeast USA to regulate effort when quotas are unpopular). We focus on the first case, where there can be strong seasonal biomass depletion due to the pursuit of just one or a few fish age cohorts each year; these include species that are shortlived and fast-growing such as Peruvian anchoveta, shrimps, crabs and squids [follows the same references as in point (i) above].…”

“…We focus on the first case, where there can be strong seasonal biomass depletion due to the pursuit of just one or a few fish age cohorts each year; these include species that are shortlived and fast-growing such as Peruvian anchoveta, shrimps, crabs and squids [follows the same references as in point (i) above]. For example, within-season biomass of some major crustacean stocks, such as the Gulf shrimp in the US and the Australian giant mud crab, experience significant reduction throughout the season, where fishing effort rapidly dampens as the stock size becomes economically unviable (Ben-Hasan et al, 2018). Invertebrate fisheries, specifically, have expanded globally over the past 4-6 decades, along with an increasing socioeconomic significance (Anderson et al, 2011;Doubleday et al, 2016).…”

“…Invertebrate fisheries, specifically, have expanded globally over the past 4-6 decades, along with an increasing socioeconomic significance (Anderson et al, 2011;Doubleday et al, 2016). Often such fisheries are regulated by entry limitation programs and seasonal closures; the latter measure is imposed by specifying start dates aimed at preventing growth overfishing while individuals in the recruiting cohort are still small, and closing dates aimed at preventing recruitment overfishing to ensure adequate spawning that produce strong cohorts for later years (e.g., Rosenberg et al, 1990;Watson et al, 1993;Kompas et al, 2004;Rabaoui et al, 2017;Ben-Hasan et al, 2018).…”