Abstract:
:The Natural Mortality coefficient (M) is a key parameter for stock assessments. The need to establish age-specific natural mortality coefficients is widely recognized because M decreases rapidly over the early stages of the life cycle until it reaches a stable M value around the age-at-maturity. The aim of this study was to estimate M during the life cycle of the sea cucumber Isostichopus badionotus, a species under heavy fishing exploitation in the Caribbean Sea and the Gulf of Mexico. Coefficients M at age were estimated using two models: The Gnomonic Interval Model (GIM) and the Chen & Watanabe model. Two different scenarios were simulated considering early and late age-at-maturity. Estimated M values using the GIM model for the early maturity scenario were 2.15 to 2.35 year-1 (interquartile range) for the juvenile stage and 0.39 to 0.43 year-1 for the adult stage; for the late maturity scenario were 0.65 to 0.71 year-1 for the juvenile stage and 0.68 to 0.74 year-1 for the adult stage. The Chen & Watanabe model M estimates for juvenile stage were between 0.85 and 2.23 year-1 and 0.39 and 2.23 year-1 for the early and late maturity scenarios respectively; for adult stage were between 0.97 and 0.21 year-1 and 0.62 and 0.43 year-1 respectively. The GIM estimated high natural mortality rates during larval stages. These estimates provided a higher level of certainty for the population models to more effectively manage a fishery and improve stock assessments.
journal_name
PeerJjournal_title
PeerJauthors
Romero-Gallardo S,Velázquez-Abunader I,López-Rocha JA,Garza-Gisholt Edoi
10.7717/peerj.5235subject
Has Abstractpub_date
2018-07-18 00:00:00pages
e5235issn
2167-8359pii
5235journal_volume
6pub_type
杂志文章相关文献
PeerJ文献大全abstract::Burkholderia pseudomallei, the causative agent of melioidosis, is intrinsically resistant to many conventional antibiotics. Therefore, alternative antimicrobial agents such as antimicrobial peptides (AMPs) are extensively studied to combat this issue. Our study aims to identify and understand the mode of action of the...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.2468
更新日期:2016-10-25 00:00:00
abstract::Natural products from the unique environments of sea water and oceans represent a largely unfamiliar source for isolation of new microbes, which are potent producers of secondary bioactive metabolites. These unique life-forms from the marine ecosphere have served as an important source of drugs since ancient times and...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.5049
更新日期:2018-06-27 00:00:00
abstract::Synechocystis gathered momentum in modelling studies and biotechnological applications owing to multiple factors like fast growth, ability to fix carbon dioxide into valuable products, and the relative ease of genetic manipulation. Synechocystis physiology and metabolism, and consequently, the productivity of Synechoc...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.5256
更新日期:2018-07-27 00:00:00
abstract::Heterotrophic plants-plants that have lost the ability to photosynthesize-are characterized by a number of changes at all levels of organization. Heterotrophic plants are divided into two large categories-parasitic and mycoheterotrophic (MHT). The question of to what extent such changes are similar in these two catego...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.9309
更新日期:2020-06-19 00:00:00
abstract::Here we describe an efficient and effective technique for rearing sexually-derived coral propagules from spawning through larval settlement and symbiont uptake with minimal impact on natural coral populations. We sought to maximize larval survival while minimizing expense and daily husbandry maintenance by experimenta...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.3732
更新日期:2017-09-06 00:00:00
abstract::In this paper, we propose a method for automatically detecting the times during which game players exhibit specific behavior, such as when players commonly show excitement, concentration, immersion, and surprise. The proposed method detects such outlying behavior based on the game players' characteristics. These chara...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.1502
更新日期:2015-12-10 00:00:00
abstract::Transmissible gastroenteritis virus (TGEV), belonging to the coronaviridae family, is the key cause of the fatal diarrhea of piglets and results in many pathological processes. microRNAs (miRNAs) play a key role in the regulation of virus-induced apoptosis. During the process of apoptosis induced by TGEV infection in ...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.1635
更新日期:2016-02-04 00:00:00
abstract::The selection and validation of proper distinguishing characters are of crucial importance in taxonomic revisions. The modern classifications of orchids utilize the molecular tools, but still the selection and identification of the material used in these studies is for the most part related to general species morpholo...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.3609
更新日期:2017-07-21 00:00:00
abstract:Background:Stoichiometric relations drive powerful constraints in several fundamental ecosystem processes. However, limited studies have been conducted on the ecological stoichiometry of plants after the change of community composition induced by Stellera chamaejasme removal in alpine grassland in the Qinghai-Tibetan P...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.9239
更新日期:2020-06-23 00:00:00
abstract:Background:Mucoepidermoid carcinoma (MEC) is a common cancer in the oral salivary gland malignancy, which mainly occurs in the parotid gland. The aim of this study is to identify independent prognostic factors and establish a nomogram model for parotid gland mucoepidermoid carcinoma (P-MEC) patients using the National ...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.7237
更新日期:2019-07-01 00:00:00
abstract::Tandem-repeat protein domains, composed of repeated units of conserved stretches of 20-40 amino acids, are required for a wide array of biological functions. Despite their diverse and fundamental functions, there has been no comprehensive assessment of their taxonomic distribution, incidence, and associations with org...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.732
更新日期:2015-01-13 00:00:00
abstract::Excessive amounts of sewage sludge produced in sewage treatment plants along with the ban on its storage and dumping require rapid solutions to the problem of sewage sludge management. An example of a rational and environmentally viable method may be provided by its application in agriculture and environmental managem...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.6434
更新日期:2019-03-11 00:00:00
abstract::Analysis of calcium sparks in cardiomyocytes can provide valuable information about functional changes of calcium handling in health and disease. As a part of the calcium sparks analysis, sparks detection and characterization is necessary. Here, we describe a new open-source platform for automatic calcium sparks detec...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.6652
更新日期:2019-03-29 00:00:00
abstract::A feeding trial was conducted to assess the feasibility of supplementing taurine in soy-based diets for juvenile starry flounder Platichthys stellatus. The basal diet (Crude protein 66.5%, crude lipid 8.5%) was supplemented with 0 (control), 0.5%, 1.0%, 1.5%, 2.0% and 2.5% taurine to formulate six test diets. Each die...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.10597
更新日期:2021-01-11 00:00:00
abstract::Several aspects of an individual's appearance have been shown to predict personality and related behaviour. While some of these cues are grounded in biology (e.g., the human face), other aspects of a person's appearance can be actively controlled (e.g., clothing). In this paper, we consider a common fashion accessory,...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.1210
更新日期:2015-08-27 00:00:00
abstract::Sanderlings (Calidris alba) are long-distance migratory shorebirds with a non-breeding range that spans temperate and tropical coastal habitats. Breeding in the High Arctic combined with non-breeding seasons in the tropics necessitate long migrations, which are energetically demanding. On an annual basis, the higher e...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.1125
更新日期:2015-08-11 00:00:00
abstract::Transition zones are of high evolutionary interest because unique patterns of spatial variation are often retained. Here, we investigated the phylogeography of the peacock blenny, Salaria pavo, a small marine intertidal fish that inhabits rocky habitats of the Mediterranean and the adjacent Atlantic Ocean. We screened...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.3195
更新日期:2017-04-27 00:00:00
abstract::While studying organisms living in association with the solitary tunicate Phallusia nigra (Ascidiacea, Ascidiidae) from a shallow fringing reef at Zeytouna Beach (Egyptian Red Sea), one of the collected ascidians showed peculiar perforations on its tunic. Once dissected, the perforations revealed to be the openings of...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.3374
更新日期:2017-06-01 00:00:00
abstract:BACKGROUND:Individuals with mental illness often experience stigmatization and encounter stereotypes such as being dangerous or unpredictable. To further improve measures against psychiatric stigma, it is of importance to understand its components. In this study, we attend to the step of separation between "us" and "th...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.2360
更新日期:2016-09-27 00:00:00
abstract::To investigate community shelter effects of two invasive decapod species, Hemigrapsus sanguineus and Carcinus maenas, in the Long Island Sound (LIS), we deployed artificial shelters in the intertidal and immediate subtidal zones. These consisted of five groups during the summer: a control, a resident H. sanguineus mal...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.2265
更新日期:2016-07-27 00:00:00
abstract::'Living fossils', a phrase first coined by Darwin, are defined as species with limited recent diversification and high morphological stasis over long periods of evolutionary time. Morphological stasis, however, can potentially lead to diversification rates being underestimated. Notostraca, or tadpole shrimps, is an an...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.62
更新日期:2013-04-02 00:00:00
abstract::Introduction. Adolescent interpersonal violence is a global public health problem, yet gaps remain in the epidemiologic literature on adolescent violence in low- and middle-income countries (LMIC). Prevalence rates and risk and protective factors reported in high-income countries may be different from those reported i...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.125
更新日期:2013-08-13 00:00:00
abstract::The active place avoidance task is a dry-arena task used to assess spatial navigation and memory in rodents. In this task, a subject is put on a rotating circular arena and avoids an invisible sector that is stable in relation to the room. Rotation of the arena means that the subject's avoidance must be active, otherw...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.1257
更新日期:2015-09-22 00:00:00
abstract:Background:RNA sequencing is an indispensable research tool used in a broad range of transcriptome analysis studies. The most common application of RNA Sequencing is differential expression analysis and it is used to determine genetic loci with distinct expression across different conditions. An emerging field called s...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.10469
更新日期:2020-12-22 00:00:00
abstract:Background:Several field studies have used fuel-cell breathalysers (FCB) to investigate the prevalence of alcohol intoxication. However, there is a lack of evidence evaluating the psychometric properties of these breathalysers outside of the forensic disciplines. Methods:The current research describes four studies des...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.4418
更新日期:2018-03-14 00:00:00
abstract::The combination of different approaches has successfully delimited new species within many Neotropical species complexes traditionally classified as a single nominal organism. Recent studies have shown that the Amazonian endemic genus Amazophrynella, currently composed of 12 small-sized species, could harbor several a...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.9887
更新日期:2020-09-18 00:00:00
abstract::In contrast to dominant mode of ecological transition in the evolution of marine mammals, different lineages of toothed whales (Odontoceti) have repeatedly invaded freshwater ecosystems during the Cenozoic era. The so-called 'river dolphins' are now recognized as independent lineages that converged on similar morpholo...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.1227
更新日期:2015-09-01 00:00:00
abstract::Footprint morphology (e.g., outline shape, depth of impression) is one of the key diagnostic features used in the interpretation of ancient vertebrate tracks. Over 80 tridactyl tracks, confined to the same bedding surface in the Lower Jurassic Elliot Formation at Mafube (eastern Free State, South Africa), show large s...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.2285
更新日期:2016-08-23 00:00:00
abstract::Background. The impact of head and neck cancer (HNC) in long-term survivors differs widely among individuals, and a significant number of them suffer from the negative effects of disease, whereas others report significant positive effect. This systematic review investigated the evidence the implications of treatment f...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.256
更新日期:2014-02-11 00:00:00
abstract::The antimicrobial additive triclosan has been used in personal care products widely across the globe for decades. Triclosan resistance has been noted among Vibrio spp., but reports have been anecdotal and the extent of phenotypic triclosan resistance across the Vibrionaceae family has not been established. Here, tricl...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.5170
更新日期:2018-07-12 00:00:00