Matches in SemOpenAlex for { <https://semopenalex.org/work/W2213109804> ?p ?o ?g. }
- W2213109804 abstract "Recovery of depleted abalone populations to a productive level will be dependent onrecruitment success occurring over multiple years. High levels of exploitation or,natural mortality events, can reduce the reproductive capacity of populations to levelswhere local populations are no longer self-sustaining. Translocation of mature adultabalone to create standalone spawning populations have been proposed by managers,industry and researchers in a range of abalone fisheries around the world, although thisconcept has never been fully tested. In this study we examined translocation of wild abalone to depleted abalone reefs in North-East Tasmania as a tool to enhance the rateof recovery of reefs that have failed to recover naturally over several decades.Several experiments were conducted during this study, including a wild abalonetranslocation, a genetic study on connectivity, monitoring of larval recruitment atTreatment and Control sites, and a larval tagging study.The translocation experiment involved moving around 2000 wild abalone to each ofthree Treatment sites at an initial abalone density of 8/m2. Surveys of the threeTranslocation sites and three neighboring Control sites were conducted over a 24 monthperiod, clearly showed an initial effect of the translocation with significant shifts indensity. Density of larger abalone gradually declined over the subsequent 24 months asa result of natural processes, notably emigration at two of the Treatment sites, andmortality from a single severe storm event at the other. While the study time-frame wastoo short to determine whether the translocated wild abalone did indeed function as aviable spawning population, we were able to determine that translocation of wildabalone can be done with little cost, and with high initial survival.The population genetic study confirmed results from previous genetic and field studiesconducted in Tasmania, that dispersal of abalone larvae is limited, with mostpopulations largely reliant on self-recruitment. This result has very clear implicationsfor the scale of benefit that might be achieved from translocation of wild abalone, withthe benefits largely restricted to the natal site (i.e. site of release). Thus to rebuildpopulations over a large geographic scale, a large number of release sites will berequired. This finding applies equally to stock enhancement using hatchery raised larvalor juvenile abalone.In the context of management of wild abalone fisheries, maintenance of commerciallyviable densities of abalone on exploited reefs will also be dependent on the localreproductive biomass. Thus appropriate Minimum Legal Sizes (MLS) to preservesufficient reproductive biomass, matched with appropriate Total Allowable Catch(TAC) is fundamental to ensuring that our abalone fisheries are resilient to ongoingexploitation.Recruitment of abalone larvae to artificial collectors was highly variable, with themajority of recruitment to collectors occurring at just a single site. At the time when spawning must of occurred, the site at which recruitment was observed was also the sitewith the highest density of abalone. This result is consistent with the concept of athreshold density, or Allee Effect, above which successful recruitment can occur.However, it was not possible to determine whether the limiting factor was suitablehabitat or supply of larvae. Processing of larval collector samples is very slow, andrequires high levels of human resources. We suggest some tactical research beundertaken in order to improve the efficiency of sample processing to make futurerecruitment studies feasible.Experiments to identify suitable methods for chemical tagging of larvae were partiallysuccessful. Nile Red was the most successful tag, and acts by creating a fluorescentmark on lipid reserves of the egg or developing embryo. Nile Red had little impact onnormal development of embryos, or settlement. However, the intensity of thefluorescent tag diminished rapidly at metamorphosis, and was therefore unlikely to beuseful for the intended purpose, which was to distinguish larvae released from knownpoints from larvae that may have arrived from elsewhere." @default.
- W2213109804 created "2016-06-24" @default.
- W2213109804 creator A5014967096 @default.
- W2213109804 creator A5085492930 @default.
- W2213109804 date "2012-01-01" @default.
- W2213109804 modified "2023-09-27" @default.
- W2213109804 title "Factors limiting resilience and recovery of fished abalone populations" @default.
- W2213109804 cites W1533774613 @default.
- W2213109804 cites W1555120240 @default.
- W2213109804 cites W1572389311 @default.
- W2213109804 cites W1635275753 @default.
- W2213109804 cites W1965112930 @default.
- W2213109804 cites W1989707401 @default.
- W2213109804 cites W1990029824 @default.
- W2213109804 cites W1991622505 @default.
- W2213109804 cites W1994181433 @default.
- W2213109804 cites W1994250687 @default.
- W2213109804 cites W2005587094 @default.
- W2213109804 cites W2009953698 @default.
- W2213109804 cites W2039981595 @default.
- W2213109804 cites W2041070581 @default.
- W2213109804 cites W2041955790 @default.
- W2213109804 cites W2050421300 @default.
- W2213109804 cites W2052733228 @default.
- W2213109804 cites W2058204324 @default.
- W2213109804 cites W2059147403 @default.
- W2213109804 cites W2060819502 @default.
- W2213109804 cites W206235508 @default.
- W2213109804 cites W2062621862 @default.
- W2213109804 cites W2071856933 @default.
- W2213109804 cites W2074159032 @default.
- W2213109804 cites W2078745484 @default.
- W2213109804 cites W2079764644 @default.
- W2213109804 cites W2080448285 @default.
- W2213109804 cites W2084248552 @default.
- W2213109804 cites W2106527121 @default.
- W2213109804 cites W2108754108 @default.
- W2213109804 cites W2124222734 @default.
- W2213109804 cites W2125716922 @default.
- W2213109804 cites W2126924895 @default.
- W2213109804 cites W2129762213 @default.
- W2213109804 cites W2136438685 @default.
- W2213109804 cites W2137577996 @default.
- W2213109804 cites W213972889 @default.
- W2213109804 cites W2140950712 @default.
- W2213109804 cites W2145191095 @default.
- W2213109804 cites W2149058296 @default.
- W2213109804 cites W2149799970 @default.
- W2213109804 cites W2152434909 @default.
- W2213109804 cites W2152941191 @default.
- W2213109804 cites W2154827917 @default.
- W2213109804 cites W2155918176 @default.
- W2213109804 cites W2167727587 @default.
- W2213109804 cites W2184759998 @default.
- W2213109804 cites W2253414912 @default.
- W2213109804 cites W2266924175 @default.
- W2213109804 cites W3112619865 @default.
- W2213109804 cites W70046664 @default.
- W2213109804 cites W940933312 @default.
- W2213109804 cites W2507756495 @default.
- W2213109804 hasPublicationYear "2012" @default.
- W2213109804 type Work @default.
- W2213109804 sameAs 2213109804 @default.
- W2213109804 citedByCount "1" @default.
- W2213109804 countsByYear W22131098042015 @default.
- W2213109804 crossrefType "journal-article" @default.
- W2213109804 hasAuthorship W2213109804A5014967096 @default.
- W2213109804 hasAuthorship W2213109804A5085492930 @default.
- W2213109804 hasConcept C104317684 @default.
- W2213109804 hasConcept C127413603 @default.
- W2213109804 hasConcept C138626823 @default.
- W2213109804 hasConcept C188198153 @default.
- W2213109804 hasConcept C18903297 @default.
- W2213109804 hasConcept C2780982499 @default.
- W2213109804 hasConcept C505870484 @default.
- W2213109804 hasConcept C55493867 @default.
- W2213109804 hasConcept C77044568 @default.
- W2213109804 hasConcept C78519656 @default.
- W2213109804 hasConcept C86803240 @default.
- W2213109804 hasConceptScore W2213109804C104317684 @default.
- W2213109804 hasConceptScore W2213109804C127413603 @default.
- W2213109804 hasConceptScore W2213109804C138626823 @default.
- W2213109804 hasConceptScore W2213109804C188198153 @default.
- W2213109804 hasConceptScore W2213109804C18903297 @default.
- W2213109804 hasConceptScore W2213109804C2780982499 @default.
- W2213109804 hasConceptScore W2213109804C505870484 @default.
- W2213109804 hasConceptScore W2213109804C55493867 @default.
- W2213109804 hasConceptScore W2213109804C77044568 @default.
- W2213109804 hasConceptScore W2213109804C78519656 @default.
- W2213109804 hasConceptScore W2213109804C86803240 @default.
- W2213109804 hasLocation W22131098041 @default.
- W2213109804 hasOpenAccess W2213109804 @default.
- W2213109804 hasPrimaryLocation W22131098041 @default.
- W2213109804 hasRelatedWork W102299794 @default.
- W2213109804 hasRelatedWork W1125882934 @default.
- W2213109804 hasRelatedWork W1536704555 @default.
- W2213109804 hasRelatedWork W2052446507 @default.
- W2213109804 hasRelatedWork W2090327858 @default.
- W2213109804 hasRelatedWork W2099474880 @default.
- W2213109804 hasRelatedWork W2285050714 @default.