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80 results for “fish length”
Fig. 3 in Relationship between fish length and otolith dimensions of Yellow striped goatfish, Upeneus vittatus (Forsskal, 1775) along the Indian coast
Fig. 3 — Otolith morphometry of U. vittatus used to study relationship with fish length. (Note: OL: Otolith Length, OH: Otolith width)
Fig. 4 in Relationship between fish length and otolith dimensions of Yellow striped goatfish, Upeneus vittatus (Forsskal, 1775) along the Indian coast
Fig. 4 — Relationship between (a – c: Mumbai): a) total length and otolith weight, b) total length and otolith width and c) total length and otolith length; (d – f: Kakinada): d) total length and otolith weight, e) total length and otolith width and f) total length and otolith length; (g – i: Odisha): g) total length and otolith weight, h) total length and otolith width and i) total length and otolith length; of U. vittatus
Fig. 3 in Total mercury in the fish Trichiurus lepturus from a tropical estuary in relation to length, weight, and season
Fig. 3. Correlations (n = 104). a. Log weight (g) in respect to total length (cm); b. Log (mgHg-T.kg-1 in the muscle) in relation to total length (cm); c. Log (mgHg-T.kg-1) in relation to log weight (g) of Trichiurus lepturus from the Goiana Estuary from November 2005 to January 2007. All plots show a 95% confidence interval.
Fig. 2 in Total mercury in the fish Trichiurus lepturus from a tropical estuary in relation to length, weight, and season
Fig. 2. Rainfall in the study area from a historic (1961 to 1990) data set (solid line) and from 2005-2007 (bars). Source: http:// www.inmet.gov.br - meteorological station Recife-82.898).
Fig. 5 in Total mercury in the fish Trichiurus lepturus from a tropical estuary in relation to length, weight, and season
Fig. 5. Correlation (n = 81) between rainfall (mm) and log (µgHg-T.kg-1 in the muscle) of Trichiurus lepturus from the Goiana Estuary (1 = dry season 1 - November and December 2005, January 2006; 2 = end of the rainy season - August to October 2006; 3 = dry season 2 - November and December 2006, January 2007).
Figure 1 in Length-weight and length-length relationships of 48 Senegalese freshwater fish species based on collection specimens
Figure 1. – Caudal fin length [calculated as (TL-SL) %SL] vs SL in Yongeichthys thomasi. Upper and lower dashed line at 2 standard deviations from the regression line. TL = total length, SL = standard length.
Figure 1 in Testing predictions of length at first maturity of teleostean fishes, given their maximum length
Figure 1. – Schematic representation of how, in fish, a declining relative gill surface area (G-lines in A-D) and thus oxygen (O2) supply imposes a limit to body weight (Wmax) when the oxygen reaches a level just sufficient for maintenance (Qmaint in A). When a stress factor (e.g., a higher temperature) increases the O2 demand for maintenance, Wmax is reached at smaller sizes (B). Maturation and spawning must occur at a size Wm Qmaint (C). This contribution suggests that the ratio Qm/ Qmaint is similar and constant among fishes, thus enabling them to adjust their value of Wm under stress condition (D; see text).
Figure 1 in Length-weight relationships of 19 fish species from two tropical artificial reservoirs (Manantali and Selingue) in Mali, West Africa
Figure 1. – Situation map (top) and detailed map (bottom) of the two Malian lakes studied: (A) Manantali, (B) Sélingué.
Fig. 4 in A novel method to obtain accurate length estimates of carnivorous reef fishes from a single video camera
Fig. 4. Boxplots showing the length distributions (mm) for Acanthistius patachonicus in five Submarine Parks within Golfo Nuevo, estimated by the naive (n = 132), Reference scale at the bait level (RSB) (n = 98) and Mirrored baited underwater video system (MBUV) (n = 132) methods. The numbers of fish measured with the MBUV in each reef are indicated, and the widths of the boxes within each reef are proportional to those numbers. The x-axis was truncated to avoid loss of detail.
Fig. 1 in A novel method to obtain accurate length estimates of carnivorous reef fishes from a single video camera
Fig. 1. Mirrored baited underwater video system (MBUV). (a) MBUV settled on bottom for calibration purposes: 1) video signal and remote control, 2) strained cables marked every 200 mm segments, 3) placement of the bait holder, 4) mirrored surface; (b) Camera view of a MBUV deployment showing the naive length of a sea bass Acanthistius patachonicus (NL), the length of its reflected image (LRI), and the reference scales (RS = 200 mm) used for applying the MBUV and Reference scale at the bait level (RSB) procedures. Four fishes (1-4) could be accurately measured in this snapshot; fish #4 could be sized even when its body laid wholly outside of the mirrored area but was partially reflected by it.
Fig. 3 in A novel method to obtain accurate length estimates of carnivorous reef fishes from a single video camera
Fig. 3. Histogram and boxplot showing the distribution of the relative errors of length estimates for three plastic silhouettes of 112 mm, 360 mm and 444 mm. The boxplot below indicates a median relative error = -0.9%.
Fig. 5 in A novel method to obtain accurate length estimates of carnivorous reef fishes from a single video camera
Fig. 5. Scatter plots with marginal histograms showing fish length estimates (mm) obtained with (a) Mirrored baited underwater video system (MBUV) and naive methods (n = 132), and with (b) MBUV and Reference scale at the bait level (RSB) methods (n = 67), in five Submarine Parks within Golfo Nuevo. Solid circles in (a) represent truncated lengths (>550 mm). The corresponding naive estimates for the truncated lengths are indicated next to the circles. Solid black lines represent the regression 1:1 in both boxes.
Fig. 2 in A novel method to obtain accurate length estimates of carnivorous reef fishes from a single video camera
Fig. 2. Calibration (a) and 'Height' (b) functions for the Mirrored baited underwater video system (MBUV) system. The solid lines represent the fitted models. Shaded areas represent 95% confidence regions. Jittered rugs on the x-axis indicate the distribution of the NL/LRI ratio and NL/LRI ratio-1 data, respectively. NL = naive length, LRI = length of the reflected image.
Figure 2 in Length-weight relationships and condition factor of five endemic fish species from Nandu and Wanquan Rivers in Hainan Island, China
Figure 2. Length-length relationships of the 5 fish species collected from June 2017 to April 2019 in the Nandu and Wanquan Rivers.
Figure 1 in Length-weight relationships and condition factor of five endemic fish species from Nandu and Wanquan Rivers in Hainan Island, China
Figure 1. Length-weight relationships of the 5 fish species collected from June 2017 to April 2019 in the Nandu and Wanquan Rivers.
Fig. 1. Length x in Scientific Note Reproductive and population parameters of discus fish Symphysodon aequifasciatus Pellegrin, 1904 (Perciformes: Cichlidae) from Piagaçu-Purus Sustainable Development Reserve (RDS-PP),
Fig. 1. Length x weight plots for specimens of Symphysodon aequifasciatus captured in Ayapuá Lake during September- November 2006 and 2007.
Figure 1 in Length-weight relationship, sex ratio, and diet of three fish species (Actinopterygii: Teleostei) in streams of the Pomba River basin, Paraíba do Sul river drainage, Southeastern Brazil
Figure 1. Volumetric frequency (Vi%) of food items identified in the diet of D. intermedius (A), A. paraibae (B) and H. punctatus (C) in streams in the Pomba River basin, Brazil, from October to December 2018.
Data From: Shortened food chain length in a fished versus unfished coral reef
<p>Direct exploitation through fishing is driving dramatic declines in wildlife populations in ocean environments, particularly for predatory and large-bodied taxa. Despite wide recognition of this pattern and well-established consequences of such trophic downgrading on ecosystem function, there have been few empirical studies examining the effects of fishing on whole system trophic architecture. Understanding these kinds of structural impacts is especially important in coral reef ecosystems - often heavily fished and facing multiple stressors. Given often high dietary flexibility and numerous functional redundancies, especially in diverse ecosystems such as coral reefs, it is important to establish if web architecture is strongly impacted by fishing pressure, or if it might be resilient, at least to moderate intensity pressure. To examine this question, we used a combination of bulk and compound-specific stable isotope analyses measured across a range of predatory and low trophic level consumers between two coral reef ecosystems that differed with respect to fishing pressure but otherwise remained largely similar. We find that even in a high diversity system with relatively modest fishing pressure, there are strong reductions in the trophic position of the three highest trophic position consumers examined in the fished system but no effects on the trophic position of lower-level consumers. We see no evidence that this shortening of these affected food webs is being driven by changes in basal resource consumption, e.g., through changes in spatial location of foraging by consumers. Instead, this likely reflects internal changes in food web architecture suggesting that even in diverse systems, and with relatively modest pressure, human harvest causes significant compressions in food chain length. This observed shortening of these food webs may have many important emergent ecological consequences for the functioning of ecosystems impacted by fishing or hunting. Such important structural shifts may be widespread but unnoticed by traditional surveys. This insight may also be useful for applied ecosystems managers grappling with choices about the relative importance of protection for remote and pristine areas and the value of strict no-take areas to protect not just the raw constituents of systems affected by fishing and hunting but also the health and functionality of whole systems.</p>
Data from: Individual body mass and length dataset for over 12,000 fish from Iberian streams
<p>Body size data of stream fish in the north-east of the Iberian Peninsula.</p> <p>We provide a unique fish individual body size dataset collected from our own sampling and public sources in north-eastern Spain. The dataset includes individual body size measures (fork length and mass) of 12,288 individuals of 24 fish species within 10 families collected at 118 locations in large rivers and small streams. Fish were caught by one-pass electrofishing following European standard protocols. The fish dataset has information on the local instream conditions including climatic variables (i.e., temperature and precipitation), topography (i.e., altitude), nutrient concentration (i.e., total phosphorus and nitrates), and the IMPRESS values (a measure of cumulative human impacts in lotic ecosystems). The potential uses of this new fish dataset are manifold, including developing size-based indices to further estimate the ecological status of freshwater ecosystems, allometric models, and analysis of variation in body size structure along environmental gradients.</p>
Fig. 1 in The Relationship Between Fish Length And Otolith Size And Weight Of The Australian Anchovy, Engraulis Australis (Clupeiformes, Engraulidae), Retrieved From The Food Of The Australasian Gannet, Morus Serrator (Suliformes, Sulidae), Hauraki Gulf, New Zealand
Fig. 1. Map showing the location of the gannet's colonies in
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.