fishcount.org.uk

Screen 4: Reference data detail for: EMW-425 (reference id: 1 )

   Help   Home
EMW idEMW ref. idFAO species categorySpeciesScientific nameLower EMW (g)Upper EMW (g)Reference indicates lower or upper EMW figure?EMW MethodSimilar species EMW idLength-weight calculations*** Fish Size Quote ****** Explanatory Notes ***Link to reference (external site)Reference documentReference url (or book)Link to FishBase.org Species Summary (external site)Species not given ind
EMW-4251Little tunny(=Atl.black skipj)Little tunny(=Atl.black skipj)Euthynnus alletteratus3,722.805,548.30BothAverage weight ("average","mean")NONEAtlantic little tuna (Euthynnus alletteratus).

Table 3 'Descriptive statistics of length and weight of Atlantic little tuna' gives mean weight for years 2003, 2004 and 2005 as follows:

2003: 3722.8g
2004: 5548.3g
2005: 5062.2g.

From this the estimated mean weight range is taken as: 3722.8 - 5548.3g.
More info."Some biological aspects of small tunas (Euthynnus alletteratus, Sarda sarda and Auxis Rochei) from the south Western Spanish Mediterranean traps". ICCAT (International Commission for the Conservation of Atlantic Tunas) website.More infoMore info.

This screen gives details for an individual reference obtained in estimating a mean weight for this species.

The information obtained from this reference to derive an estimated mean weight is in the *** fish size quote *** and/or *** Explanatory notes *** column. Note that you may need to search the document using key words in the '*** Fish Size Quote ***' or *** Explanatory notes *** column to find the relevant fish size data. To view the reference document itself (if available online): scroll right and click on 'More info' in the 'Link to reference' column, if available.

Where the information obtained from the reference is a fish length, the calculations performed to obtain a weight may be viewed by clicking on 'More info' in the 'Length-weight calculations' column.

To view the 'Species Summary' page on fishbase.org for this species, click on 'More info' in the 'Link to FishBase.org Species Summary ' column. Very occasionally this link displays the fishbase.org home page instead of the species summary page. If this happens, enter the scientific name in the 'Genus + Species' search field to search fishbase.org for this species.

For explanation of the columns in the above table click on Help