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Articles 691 - 720 of 7414
Full-Text Articles in Marine Biology
Trends In Catch Rates Of Sawfish On The Australian North West Shelf, C. Wakefield, S. J. Newman, M. Braccini, A. Harry
Trends In Catch Rates Of Sawfish On The Australian North West Shelf, C. Wakefield, S. J. Newman, M. Braccini, A. Harry
Fisheries Research Articles
Northwestern Australia is thought to have some of the world’s last remaining viable sawfish populations, although little quantitative data exists on their status or trends. This study examined 17 years of logbook bycatch records (n = 815) for green sawfish Pristis zijsron and narrow sawfish Anoxypristis cuspidata from a trawl fishery operating on the Australian North West Shelf. Incidental sawfish captures by the fishery are rare, occurring approximately once every 75 trawls (~199 trawl hours). To standardize catch rates and account for excess zeros in the data, we employed generalized additive models for location, scale, and shape (GAMLSSs) using a …
Animal Conservation In St. Louis, Kate O'Sullivan
Animal Conservation In St. Louis, Kate O'Sullivan
Undergraduate Research Symposium
St. Louis has a multitude of organizations involved in the natural sciences. But how many of them actually contribute towards animal conservation? The St. Louis Zoo is an organization that focuses a lot of its effort on presentation, so how does that impact the funds that go towards actually saving the animals? I plan to dive into the different animal-based organizations in St. Louis and its surrounding areas, as well as discuss the positives and negatives of each organization. Furthermore, I will provide examples from several sources that I have been reviewing all year to support my claims. I plan …
A Computational Profile Of Invasive Lionfish In Belize: A New Insight On A Destructive Species, Joshua E. Balan
A Computational Profile Of Invasive Lionfish In Belize: A New Insight On A Destructive Species, Joshua E. Balan
The Journal of Purdue Undergraduate Research
Since their discovery in the region in 2009, invasive Indonesian-native lionfish have been taking over the Belize Barrier Reef. As a result, populations of local species have dwindled as they are either eaten or outcompeted by the invaders. This has led to devastating losses ecologically and economically; massive industries in the local nations, such as fisheries and tourism, have suffered greatly. Attempting to combat this, local organizations, from nonprofits to ecotourism companies, have been manually spear-hunting them on scuba dives to cull the population. One such company, Reef Conservation Institute (ReefCI), operating out of Tom Owens Caye outside of Placencia, …
Parental Environnement Influences Offspring Gene Expression In The Olympia Oyster, Ostrea Lurida., Mark S. Yeats
Parental Environnement Influences Offspring Gene Expression In The Olympia Oyster, Ostrea Lurida., Mark S. Yeats
LSU Master's Theses
The Olympia Oyster is the only native oyster species on the Pacific coast of North America. Seasonality in water temperatures across this threatened species’ broad and fragmented range has been linked to its development, reproductive timing, reproductive activity, growth, and survival rates. Recent evidence suggests parental environments can have carry-over effects on larval growth and respiration rates in response to temperature. In this study, we utilized transcriptomic methods to identify the underlying mechanisms of this cross-generation plasticity. Sequence libraries of adult ctenidia tissue and pooled larval replicates were extracted and spawned from hatchery raised oysters of the same parentage immediately …
The Cetacean Sanctuary: A Sea Of Unknowns, Jason N. Bruck
The Cetacean Sanctuary: A Sea Of Unknowns, Jason N. Bruck
Faculty Publications
Housing cetaceans in netted sea pens is not new and is common for many accredited managed- care facilities. Hence, the distinction between sanctuary and sea pen is more about the philosophies of those who run these sanctuary facilities, the effects of these philosophies on the animals’ welfare, and how proponents of these sanctuaries fund the care of these animals. Here, I consider what plans exist for cetacean sanctuaries and discuss the caveats and challenges associated with this form of activist-managed captivity. One goal for stakeholders should be to disregard the emotional connotations of the word “sanctuary” …
Redesign And De Novo Design Of Circular Blue Bioindustry, Wei Zhang, Shufeng Zhang, Hantao Zhou, Minhan Dai
Redesign And De Novo Design Of Circular Blue Bioindustry, Wei Zhang, Shufeng Zhang, Hantao Zhou, Minhan Dai
Bulletin of Chinese Academy of Sciences (Chinese Version)
The future marine bioindustry, which features advanced green intelligent biomanufacturing and high-value marine bioproducts, is a strategically emerging marine industry. This study proposes a new industrial development model for the circular blue bioindustry, founded on simultaneously optimizing the sustainable utilization of marine bioresources and protecting the ecological environment. Through in-depth analysis of the current situation, challenges, and potential development opportunities of the global and Chinese marine bioindustries underpinning sustainable development, theoretical framework, approaches and implementation pathways have been established to redesign the existing marine bioindustry and de novo design of the emerging marine bioindustry. Future key development priorities are suggested …
Broadscale Coral Disease Interventions Elicit Efficiencies In Endemic Disease Response, Kathryn A. Toth, Samantha F. Buckley, Hunter Noren, Karen L. Neely, Brian K. Walker
Broadscale Coral Disease Interventions Elicit Efficiencies In Endemic Disease Response, Kathryn A. Toth, Samantha F. Buckley, Hunter Noren, Karen L. Neely, Brian K. Walker
Marine & Environmental Sciences Faculty Articles
The presence and abundance of reef-building corals are crucial to the long-term existence of Caribbean coral reef ecosystems, providing both direct and indirect, local and global, ecological, economic, and social benefits. In 2014, stony coral tissue loss disease (SCTLD) was first identified in southeast Florida and remains endemic to the region, while continuing to spread throughout the Caribbean. Effective in situ intervention treatments using antibiotic paste can halt lesion progression on Montastraea cavernosa up to 90% of the time. This study investigated intervention activities over a three-year period to identify efficiencies in disease response. Since May 2019, 1,037 corals, >85% …
Puerulus Settlement Forecasting In A Harvest Strategy Evaluation Of The Rock Lobster Fishery In South Australia, Richard Mcgarvey, Adrian Linnane, John E. Feenstra, Janet M. Matthews, Lachlan J. Mcleay, Annabel Jones, Kyriakos Toumazos, Simon De Lestang
Puerulus Settlement Forecasting In A Harvest Strategy Evaluation Of The Rock Lobster Fishery In South Australia, Richard Mcgarvey, Adrian Linnane, John E. Feenstra, Janet M. Matthews, Lachlan J. Mcleay, Annabel Jones, Kyriakos Toumazos, Simon De Lestang
Fisheries Research Articles
Harvest strategies are utilised in the management of fishery resources globally. Critical to their success is harvest strategy evaluation, whereby future performance is assessed through projection modelling. Using the observed relationship between a puerulus settlement index and model-estimated recruitment, we evaluated a southern rock lobster (Jasus edwardsii) harvest strategy in South Australia. Short-to-medium puerulus settlement recruitment forecasting was incorporated into future projections of catch, catch per unit effort, and percent unexploited egg production (%UEP) during 2019–2022. Observed values of indicators that closely aligned with projected outputs indicated that puerulus forecasting underpinned reliable evaluation of future fishery performance. A …
Biomass Distribution Of Benthosema Glaciale And Maurolicus Muelleri In The North Atlantic, Fabio Berzaghi, Laurene Merillet, Anna Conchon, Morten Skogen, Emma Dolmaire, Espen Strand, Douglas Speirs, Webjørn Melle, Mary S. Wisz
Biomass Distribution Of Benthosema Glaciale And Maurolicus Muelleri In The North Atlantic, Fabio Berzaghi, Laurene Merillet, Anna Conchon, Morten Skogen, Emma Dolmaire, Espen Strand, Douglas Speirs, Webjørn Melle, Mary S. Wisz
Datasets
This dataset contains maps of biomass estimates of Maurolicus muelleri and Benthosema glaciale created using the output of three models from the MEESO project. Maps represent an average biomass distribution and not any specific year, please note the distribution of biomass varies in time. For more details please consult the metadata on the ICES website.
Mercury Bioaccumulation In Top-Level Predatory Fishes From Marine And Freshwater Environments, David L. Taylor, Jillian Haudenshield, Johnathan Serbst, Jim Lake, Alan Libby
Mercury Bioaccumulation In Top-Level Predatory Fishes From Marine And Freshwater Environments, David L. Taylor, Jillian Haudenshield, Johnathan Serbst, Jim Lake, Alan Libby
Student Research Symposium
Mercury is a widespread environmental contaminant that poses a threat to human and wildlife health. Mercury concentrations ([Hg]) may be elevated in fish tissues due to individual bioaccumulation and biomagnification in the food web. This study examined Hg bioaccumulation rates in striped bass (SB) and largemouth bass (LMB): top-level predatory fishes in marine and freshwater environments. SB, LMB, and their prey were collected in Rhode Island waters from 2006 to 2023 using rod & reel, electrofishing, and trawling methods. Age (yr) was determined for each fish based on measurements of total lengths (TL; cm) in the laboratory (LMB: 15-57 cm, …
Fauna, Flora, And Land Cover Changes Over The Last Two Decades In The Mobile-Tensaw River Delta, Gabriel De Oliveria, Steven R. Schultze, Guilherme Mataveli
Fauna, Flora, And Land Cover Changes Over The Last Two Decades In The Mobile-Tensaw River Delta, Gabriel De Oliveria, Steven R. Schultze, Guilherme Mataveli
Technical Reports
A technical report documenting ecosystem changes to the Mobile-Tensaw River Delta region due to urban expansion over approximately two decades (2001-2019).
199965, David Kerstetter
199965, David Kerstetter
PERC Albacore sPAT Data
Datasets (and supporting material) from 4sPAT electronic tags deployed on albacore caught by pelagic longline gear in the western North Atlantic.
199953, David Kerstetter
199953, David Kerstetter
PERC Albacore sPAT Data
Datasets (and supporting material) from 4sPAT electronic tags deployed on albacore caught by pelagic longline gear in the western North Atlantic.
199949, David Kerstetter
199949, David Kerstetter
PERC Albacore sPAT Data
Datasets (and supporting material) from 4sPAT electronic tags deployed on albacore caught by pelagic longline gear in the western North Atlantic.
199946, David W. Kerstetter
199946, David W. Kerstetter
PERC Albacore sPAT Data
Datasets (and supporting material) from 4sPAT electronic tags deployed on albacore caught by pelagic longline gear in the western North Atlantic.
Using Single Cell Genomics To Explore The Impact Of Marine Viruses On Microbial Respiration., Paxton Tomko
Using Single Cell Genomics To Explore The Impact Of Marine Viruses On Microbial Respiration., Paxton Tomko
MCB Articles
Viral metabolic reprograming of marine prokaryotes, through the use of virally encoded auxiliary metabolic genes (AMGs), plays a critical role in marine ecosystem function by influencing biochemical cycles and genetic diversity in these environments. Despite the fundamental role viruses play in global environmental ecosystems, they remain an understudied aspect of microbial ecology and evolution, in part due to the methods available for studying virus host interactions in natural systems. Thus far, metagenomic analyses have been used to study the interactions of virus host pairs, but these types of analyses have their limitations in accurately linking viruses to hosts, or culture-based …
Late Summer Plankton Community Variation In Near Shore Environments, Aidan Jacobs-Walker
Late Summer Plankton Community Variation In Near Shore Environments, Aidan Jacobs-Walker
Copley Library Undergraduate Research Awards
Phytoplankton communities have profound impacts on ecosystem health and function. In the Southern California Bight, hydrographic conditions play a key role in determining the composition of phytoplankton communities. This study conducted hydrographic and plankton community analyses of the nearshore environment off Dana Point, California, during late September. Similar to other studies in the SCB during fall, we observed weakly stratified, oligotrophic waters dominated by dinoflagellates under 10 μm. However, the recorded plankton abundances onshore vs. offshore deviated from the “green ribbon” typical of the SCB, in which phytoplankton are much more abundant onshore than offshore. Additionally, while the onshore community …
Spatial Variation In Mercury Contamination In Freshwater Fish Species Across Rhode Island, David L. Taylor, Brianna Lotti, Jonathan Serbst, Jim Lake, Alan Libby, Mariel Sorlien
Spatial Variation In Mercury Contamination In Freshwater Fish Species Across Rhode Island, David L. Taylor, Brianna Lotti, Jonathan Serbst, Jim Lake, Alan Libby, Mariel Sorlien
Student Research Symposium
Fish provide essential nutrients and proteins beneficial to human health, yet may pose certain risks due to contaminants in edible tissues. For example, mercury (Hg) is a widespread toxicant that bioaccumulates in fish muscle (filet) tissue. Accordingly, federal and state government agencies issue consumption advisories to minimize diet related Hg exposure. Fish consumption advisories, however, often fail to account for small-scale spatial variations in Hg contamination, especially in freshwater fishes. This study examined site-specific Hg concentrations in bluegill sunfish (Lepomis macrochirus), pumpkinseed sunfish (L. gibbosus), largemouth bass (Micropterus salmoides), chain pickerel (Esox niger), and yellow perch (Perca flavescens), all of …
Maternal Mercury Transfer From Pregnant Spiny (Squalus Acanthias) And Smooth (Mustelus Canis) Dogfish To Their Pups Through Differing Reproductive Strategies, David L. Taylor, Maxwell Ajemian, Abrielle Remick
Maternal Mercury Transfer From Pregnant Spiny (Squalus Acanthias) And Smooth (Mustelus Canis) Dogfish To Their Pups Through Differing Reproductive Strategies, David L. Taylor, Maxwell Ajemian, Abrielle Remick
Student Research Symposium
Mercury (Hg) is a bioaccumulative contaminant that can be transferred from pregnant females to developing embryos (i.e., intrauterine maternal Hg transfer); thus, leading to health deficits in offspring. This study examined Hg transfer in the ovoviviparous spiny dogfish (Squalus acanthias) and viviparous smooth dogfish (Mustelus canis). Female dogfish were collected from Narragansett Bay, Rhode Island Sound, and Block Island Sound via rod & reel, gillnet, and trawling. In the laboratory, intrauterine pups were excised from pregnant dogfish, after which samples of mother and pup muscle tissue were analyzed for total Hg concentrations ([Hg] in ppm dry weight) using automated atomic-absorption …
Mercury Content In The Baleen Plates Of Rorqual Whales, David L. Taylor, Ava Cieplinkski, Max Ajemian, Matthew Savoca
Mercury Content In The Baleen Plates Of Rorqual Whales, David L. Taylor, Ava Cieplinkski, Max Ajemian, Matthew Savoca
Student Research Symposium
Mercury is a persistent environmental contaminant posing significant risks to wildlife health due to its propensity for bioaccumulation in organismal tissues. This study investigated total mercury concentrations in the baleen plates of rorqual whales (Family Balaenopteridae), specifically the Fin whale (Balaenoptera physalus), Blue whale (B. musculus), and Rice’s whale (B. ricei). Archived baleen samples were sourced from the Smithsonian’s National Museum of Natural History and analyzed for total mercury (Hg) content (ppm dry weight) using atomic absorption spectroscopy. Male Fin and Blue whales from the Antarctic, South Pacific region (1947-1948), with body lengths ranging from 21 to 24 m, exhibited …
The Methane-Oxidizing Microbial Communities Of Three Maar Lakes In Tropical Monsoon Asia, Iona Eunice C. Bicaldo, Karol Sophia Agape R. Padilla, Tzu Hsuan Tu, Wan Ting Chen, Milette U. Mendoza-Pascual, Carmela Vannette B. Vicera, Justine R. De Leon, Kamille N. Poblete, Eleanor S. Austria, Mark Louie D. Lopez, Yuki Kobayashi, Fuh Kwo Shiah, Rey Donne S. Papa, Noboru Okuda, Pei Ling Wang, Li Hung Lin
The Methane-Oxidizing Microbial Communities Of Three Maar Lakes In Tropical Monsoon Asia, Iona Eunice C. Bicaldo, Karol Sophia Agape R. Padilla, Tzu Hsuan Tu, Wan Ting Chen, Milette U. Mendoza-Pascual, Carmela Vannette B. Vicera, Justine R. De Leon, Kamille N. Poblete, Eleanor S. Austria, Mark Louie D. Lopez, Yuki Kobayashi, Fuh Kwo Shiah, Rey Donne S. Papa, Noboru Okuda, Pei Ling Wang, Li Hung Lin
Environmental Science Faculty Publications
Methane-oxidizing bacteria (MOB) is a group of planktonic microorganisms that use methane as their primary source of cellular energy. For tropical lakes in monsoon Asia, there is currently a knowledge gap on MOB community diversity and the factors influencing their abundance. Herewith, we present a preliminary assessment of the MOB communities in three maar lakes in tropical monsoon Asia using Catalyzed Reporter Deposition, Fluorescence In-Situ Hybridization (CARD-FISH), 16S rRNA amplicon sequencing, and pmoA gene sequencing. Correlation analysis between MOB abundances and lakes’ physicochemical parameters following seasonal monsoon events were performed to explain observed spatial and temporal patterns in MOB diversity. …
Short-Term Temporal Trends Of A Coral Reef In Samana (Dominican Republic): The Value Of A Permanent Monitoring Program To Identify Drivers Of Rapid Change, Aldo Croquer, Someira Zambrano, D. Yasmín Evangelista-Perez, Samuel King, Sergio Guendulain-Garcia, Maria F Villalpando, Rita Sellares-Blasco
Short-Term Temporal Trends Of A Coral Reef In Samana (Dominican Republic): The Value Of A Permanent Monitoring Program To Identify Drivers Of Rapid Change, Aldo Croquer, Someira Zambrano, D. Yasmín Evangelista-Perez, Samuel King, Sergio Guendulain-Garcia, Maria F Villalpando, Rita Sellares-Blasco
Gulf and Caribbean Research
Permanent monitoring programs are valuable to identify drivers of ecosystem trends. For example, in 2021, we reported the first record of Stony Coral Tissue Loss Disease (sctld) along the northeastern coast of the Dominican Republic, affecting major reef—building coral species with a prevalence above 30%. However, a few sites such as Carenero remained unaffected by sctld for almost 2 years. The average coral cover in this site was about 18—25% (mean 18.3% ± sd 1.5), and disease prevalence did not exceed 7% in the coral community. During the first quarter of 2022, a few colonies (
Quantifying Public Support For Culling Crown-Of-Thorns Starfish (Acanthaster Spp.) On The Great Barrier Reef, Stewart Lockie, Henry A. Bartelet, Brent W. Ritchie, Lintje Sie, Gillian Paxton
Quantifying Public Support For Culling Crown-Of-Thorns Starfish (Acanthaster Spp.) On The Great Barrier Reef, Stewart Lockie, Henry A. Bartelet, Brent W. Ritchie, Lintje Sie, Gillian Paxton
Quantitative Methods and Information Technology Faculty Publications
Population surges of crown-of-thorns starfish (COTS) (Acanthaster spp.) are a leading cause of coral cover loss on Australia's Great Barrier Reef (GBR). While COTS culling has been undertaken since 2012 little is known about how the public perceive COTS culling or how perceptions vary among social groups. Drawing on survey data collected in 2018 and 2022 we test the relative influence of demographic variables, social and institutional variables, and beliefs concerning the risks and benefits of culling, on public acceptance for the culling of COTS on the GBR. In contrast with previous research suggesting a polarization of views, we found …
A Preliminary Investigation Of Adherence To Shell Length Regulations And Adaptive Capacity Of The Turneffe Atoll Queen Conch (Aliger Gigas) Fishery, Belize, Elsa M. K. Brenner, Vincent Sollitto, Vincent Baribeau, Rebecca Branconi, Paul Simonin
A Preliminary Investigation Of Adherence To Shell Length Regulations And Adaptive Capacity Of The Turneffe Atoll Queen Conch (Aliger Gigas) Fishery, Belize, Elsa M. K. Brenner, Vincent Sollitto, Vincent Baribeau, Rebecca Branconi, Paul Simonin
Gulf and Caribbean Research
No abstract provided.
Lessons From An Iconic Grouper: Sex, Science, And Serendipity, Yvonne J. Sadovy De Mitcheson
Lessons From An Iconic Grouper: Sex, Science, And Serendipity, Yvonne J. Sadovy De Mitcheson
Gulf and Caribbean Research
From a common little damselfish and spectacular grouper aggregations, to disappearing reef fishes and the dark side of the international seafood trade, my journey has passed through a fascinating and worrying period of change in the way we view and treat our oceans. Although much of my career has been in the Indo—Pacific, I focus here mainly on my professional ‘roots’ in the Caribbean and on the Nassau Grouper Epinephelus striatus, a species that kept me curious, taught me patience, never to assume and always to stay hopeful. This fish is almost an obsession; why can we not better safeguard …
The Influence Of Intracellular Photosymbiosis On The Evolution And Function Of Cnidarian Immunity, Madison A. Emery
The Influence Of Intracellular Photosymbiosis On The Evolution And Function Of Cnidarian Immunity, Madison A. Emery
Biology Dissertations - Archive
Intracellular photosymbiosis with Symbiodiniaceae is facilitated by cnidarian immunity as it is required for symbiont recognition and is subsequently suppressed to maintain stable intracellular symbiosis. To date, it is unclear how the cnidarian-Symbiodiniaceae symbiosis influences immune gene repertoires, immune gene expression, and disease pathology across its independent evolutions. To address these knowledge gaps, my dissertation approaches studying the cnidarian-Symbiodiniaceae symbiosis through a comparative lens to determine how it shapes immune gene evolution and immune responses in divergent symbiotic cnidarian species. In chapter two I survey eight non-symbiotic and seven symbiotic cnidarians proteomes for four families of pattern recognition receptors (PRRs) …
Coral Scar Investigation: An Application Of Machine Learning And Computational Biology Methods To Understand Coral Holobiont Response To Various Tissue Loss Diseases, Emily W. Van Buren
Coral Scar Investigation: An Application Of Machine Learning And Computational Biology Methods To Understand Coral Holobiont Response To Various Tissue Loss Diseases, Emily W. Van Buren
Biology Dissertations - Archive
Coral disease is one of the biggest challenges facing coral reefs that actively changes biodiversity resulting in coral decline. With the rising threat of diseases, corals require biomarkers that reflect the immune systems and differences between common coral tissue loss diseases to best assist in coral restoration efforts. To obtain these biomarkers, my dissertation leverages two previously published datasets from two tissue loss disease exposure studies to investigate genes that are relevant for coral immune pathways, disease susceptibility, and classification between the diseases. In Chapter 2, I use comparative computational biology tools and protein assays to identify the melanin cascade …
Corals In Crisis: A Transcriptomic Investigation Of Stony Coral Tissue Loss Disease, Kelsey M. Beavers
Corals In Crisis: A Transcriptomic Investigation Of Stony Coral Tissue Loss Disease, Kelsey M. Beavers
Biology Dissertations - Archive
Coral reefs face existential threats due to climate change and human activities. The combined effects of ocean warming, overfishing, pollution, and habitat destruction have fundamentally altered the functionality of coral reefs and are driving a drastic increase in the prevalence and severity of coral disease outbreaks. Stony coral tissue loss disease (SCTLD) has emerged one of the most devastating disturbances to Caribbean reef ecosystems on record. Despite notable progress, the cellular mechanisms driving SCTLD pathogenesis remain poorly understood. To address this issue, my dissertation investigates the gene expression, histopathology, immune protein activity, and symbiont community dynamics involved in SCTLD progression …
Characterizing The Habitat Use Of Pacific Coast Feeding Group Gray Whales (Eschrichtius Robustus) And The Spatial And Temporal Variability Of Their Benthic And Planktonic Invertebrate Prey In Northern California, Robyn E. Norman
Cal Poly Humboldt theses and projects
As opportunistic foragers, the Eastern North Pacific population (~20,000) of gray whales (Eschrichtius robustus) feed on diverse benthic and planktonic invertebrates in northern Alaska foraging grounds before they undertake one of the largest yearly migrations of any mammal to breed in Baja California, Mexico. While most of the population travels to the summer foraging grounds in Alaska, a sub-group of whales (~230) called the Pacific Coast Feeding Group (PCFG) summer between British Columbia, Canada, and northern California. The diet of PCFG whales typically includes high-density and/or high-caloric prey items like mysids and diverse species of amphipods, yet a …
Using Biological Parameters And Traditional Ecological Knowledge To Study The Status Of Spirinchus Starksi (Night Smelt) In Northern California, Z. Zenobia
Cal Poly Humboldt theses and projects
Night smelt spawns from central California to southeast Alaska, on the shore of sandy beach surf zones at night. This species is a vital part of regional food webs and, in California, is fished commercially primarily in Humboldt and Del Norte counties. It has cultural importance for dietary and subsistence needs to the Tribes across the coast, as well as inland. The objectives of this thesis are as follow: study the status of the population of night smelt in Humboldt and Del Norte counties by (A) comparing the abundance, length, weight, age, sex ratio, and timing of reproduction of the …