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Nigeria's free digital learning hub. Videos, lecture notes, practice questions and leaderboards aligned with CCMAS, NBTE, NCCE, WAEC, NECO, IJMB and JAMB curricula.
Fisheries and Aquaculture · 400 Level
This is the complete lecture note for FAA 304 Fish Gear Design and Production, prepared for Fisheries and Aquaculture students at 400 Level. You can read it online below, open it in the full viewer, or download the PDF for offline study. It pairs with the course's video lectures, so you can read and watch together.
LA-NET | ONLINE LEARNING VIDEO PLATFORM FOR POST-SECONDARY & HIGHER INSTITUTION STUDENTS
LA-NET | ONLINE LEARNING VIDEO PLATFORM FOR POST-SECONDARY & HIGHER INSTITUTION STUDENTS Course code: FAA 304 Course title: Fish Gear Design and Production Course credit load: 2 Units Series 1: Classification of Fishing Gears and Craft Techniques Part 1.1: Foundations of Fishing Gears and Crafts Sub Part 1.1.1: Definition and scope of fishing gears and crafts Sub Part 1.1.2: Historical development of fishing gears and crafts Sub Part 1.1.3: Importance of classification in fisheries management Part 1.2: Rational Classification of Fishing Gears Sub Part 1.2.1: Criteria for classification of fishing gears Sub Part 1.2.2: Major categories of fishing gears (active and passive) Sub Part 1.2.3: Examples of gear types under each category Part 1.3: Classification of Fishing Crafts Sub Part 1.3.1: Definition and role of fishing crafts Sub Part 1.3.2: Types of fishing crafts (canoes, trawlers, longliners, etc.) Sub Part 1.3.3: Relationship between gear and craft selection Part 1.4: Applications of Gear and Craft Classification Sub Part 1.4.1: Role of classification in sustainable fisheries management Sub Part 1.4.2: Influence on fishing efficiency and selectivity Sub Part 1.4.3: Case examples from Nigeria and global fisheries Introduction Fishing has always been central to human survival and economic development, yet the tools and techniques used to harvest fish have evolved remarkably over time. From simple hooks and lines to complex trawlers and sonar-assisted systems, the diversity of fishing gears and crafts reflects both cultural
LA-NET | ONLINE LEARNING VIDEO PLATFORM FOR POST-SECONDARY & HIGHER INSTITUTION STUDENTS traditions and technological progress. Understanding how these gears and crafts are classified is vital, as it allows fisheries managers and practitioners to organise knowledge, regulate practices, and promote sustainability in the face of growing demand for aquatic resources. The aim of this Series is to introduce you to the rational classification of fishing gears and crafts, helping you to recognise their types, functions, and applications. By the end of this Series, you will be able to explain the foundations of fishing gears and crafts, identify the criteria used in classification, and appreciate how these classifications support effective fisheries management. We shall commence this Series by exploring the foundations of fishing gears and crafts, including their definitions, historical development, and the importance of classification. Next, we will examine the rational classification of fishing gears, focusing on the criteria used and the major categories such as active and passive gears, with examples provided. Following that, we will turn to the classification of fishing crafts, considering their types and the relationship between gear and craft selection. Finally, we will conclude by discussing the applications of gear and craft classification, highlighting their role in sustainability, efficiency, and selectivity, with case examples drawn from Nigeria and global fisheries. Series Learning Outcomes Upon completing this Series, you should be able to: SLO 1.1 define fishing gears and crafts, and explain their scope within fisheries, SLO 1.2 describe the historical development of fishing gears and crafts, highlighting their evolution in Nigeria and globally, SLO 1.3 explain the importance of classification systems in fisheries management, SLO 1.4 analyse the criteria used for the rational classification of fishing gears, SLO 1.5 distinguish between major categories of fishing gears such as active and passive types, SLO 1.6 identify examples of fishing gear types under each classification category, SLO 1.7 define fishing crafts and explain their role in supporting gear operations, SLO 1.8 classify different types of fishing crafts, including artisanal and industrial examples, SLO 1.9 evaluate the relationship between gear selection and craft type in different fishing environments, and SLO 1.10 discuss practical applications of gear and craft classification in promoting sustainability, efficiency, and selectivity in fisheries.
LA-NET | ONLINE LEARNING VIDEO PLATFORM FOR POST-SECONDARY & HIGHER INSTITUTION STUDENTS 1.1 Foundations Of Fishing Gears And Crafts 1.1.1 Definition and scope of fishing gears and crafts Fishing gears are tools or devices specifically designed to capture fish, ranging from simple hooks and nets to complex trawling systems. Fishing crafts are vessels or platforms used to deploy these gears, such as canoes, trawlers, or longliners. Together, gears and crafts form the backbone of fishing operations, enabling humans to harvest aquatic resources efficiently. Their scope extends across artisanal, subsistence, and industrial fisheries, each with unique gear–craft combinations suited to the environment and target species. Fill in the blank: Fishing gears are tools designed to ______ fish, while fishing crafts are vessels used to deploy them. Figure 1.1 Fishing gears and crafts in operation
LA-NET | ONLINE LEARNING VIDEO PLATFORM FOR POST-SECONDARY & HIGHER INSTITUTION STUDENTS 1.1.2 Historical development of fishing gears and crafts Fishing gears and crafts have evolved over centuries, reflecting cultural traditions, technological innovations, and ecological adaptations. Early fishing relied on rudimentary tools such as spears, traps, and woven nets, often operated from dugout canoes. With industrialisation, mechanised trawlers, purse seiners, and longliners emerged, enabling large-scale harvests. In Nigeria, artisanal gears like cast nets and hand lines remain widespread, while modern crafts are increasingly used in commercial fisheries. This historical progression highlights the dynamic interplay between human ingenuity and aquatic ecosystems. Fill in the blank: Early fishing relied on rudimentary tools such as ______, traps, and woven nets. Plate 1.1 Traditional fishing gears and crafts 1.1.3 Importance of classification in fisheries management The classification of fishing gears and crafts refers to the systematic grouping of these tools and vessels based on criteria such as mode of operation, environment, or target species. Classification is important because it helps fisheries managers regulate fishing practices, monitor resource exploitation, and design sustainable strategies. For example, distinguishing between active gears (like trawls) and passive gears (like traps) allows policymakers to set appropriate quotas and
LA-NET | ONLINE LEARNING VIDEO PLATFORM FOR POST-SECONDARY & HIGHER INSTITUTION STUDENTS restrictions. In Nigeria, rational classification supports the balance between artisanal livelihoods and industrial production, ensuring long-term sustainability. Fill in the blank: Classification of fishing gears and crafts helps fisheries managers to ______ fishing practices and promote sustainability. Reason for Classification Explanation Regulation Helps enforce fishing laws by categorizing gear types, species, and practices. Sustainability Supports resource conservation by aligning fishing methods with ecological limits. Efficiency Improves management decisions by standardizing data collection and reporting. Conflict reduction Minimizes disputes among fishers by clearly defining gear categories and usage rights. Research and monitoring Facilitates scientific studies and stock assessments through consistent classification systems. Box 1.1 Importance of classification in fisheries management Pilot questions 1.1 Define fishing gears and fishing crafts. Identify one example of a fishing gear and one example of a fishing craft. State one traditional fishing gear used in Nigeria. Explain why classification of fishing gears and crafts is important in fisheries management. Distinguish between active and passive gears with one example each. 1.2 Rational Classification Of Fishing Gears 1.2.1 Criteria for classification of fishing gears Fishing gears can be classified using several criteria, which are standards or principles used to group items systematically. The most common criteria include the mode of operation (how the gear captures fish), the environment (marine, freshwater, or estuarine), and the target species
LA-NET | ONLINE LEARNING VIDEO PLATFORM FOR POST-SECONDARY & HIGHER INSTITUTION STUDENTS (pelagic, demersal, or benthic). These criteria ensure that gears are grouped logically, making it easier for fisheries managers to regulate their use and for fishers to select appropriate tools. Fill in the blank: Fishing gears can be classified based on mode of operation, environment, and ______ species. Criterion Explanation Mode of operation Classifies gears by how they capture fish (e.g., active gears like trawls vs. passive gears like gillnets). Environment Differentiates gears based on the habitat where they are used (e.g., marine, freshwater, pelagic, benthic). Target species Groups gears according to the species or size classes they are designed to catch. Selectivity Considers how specific the gear is in capturing desired species while minimizing bycatch. Material and design Accounts for construction type (e.g., nets, hooks, traps) and gear technology. Box 1.2 Criteria for classification of fishing gears 1.2.2 Major categories of fishing gears (active and passive) Fishing gears are broadly divided into active gears and passive gears. Active gears are those that require continuous human or mechanical effort to capture fish, such as trawls, seines, and dredges. Passive gears, on the other hand, are stationary and rely on fish movement to be effective, such as traps, gillnets, and hooks. This distinction is fundamental because it influences fishing efficiency, selectivity, and environmental impact. Active gears often cover large areas quickly, while passive gears are more selective and less disruptive to habitats. Fill in the blank: Trawls and seines are examples of ______ gears, while traps and gillnets are examples of passive gears.
LA-NET | ONLINE LEARNING VIDEO PLATFORM FOR POST-SECONDARY & HIGHER INSTITUTION STUDENTS Figure 1.2 Active versus passive fishing gears 1.2.3 Examples of gear types under each category Within each category, there are diverse gear types adapted to specific environments and species. Active gears include trawl nets, which are dragged along the seabed or mid-water, and purse seines, which encircle schools of fish. Passive gears
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