Wild tuna, a species of large ocean fish, have decreased in number because of overfishing Recently, attempts have been made to farm tuna by feeding the fish in ocean cages until they become large enough for sale. However, tuna farming has faced several problems and criticisms.
First, female tuna do not lay eggs in captivity, so tuna farmers must capture large quantities of young wild tuna to stock their farms, further reducing wild tuna populations. These young tuna are caged and fed until they are large enough to be sold. Since the captured females in tuna farms cannot lay eggs to replace the tuna that are sold, tuna farmers continue to catch young wild tuna to keep their farms going and so worsen the decline in wild tuna populations.
Second, tuna raised on farms are very expensive because they depend on a costly, high-protein food derived from other fish. Tuna feed almost exclusively on small fish, which supply them with the proteins and nutrients they require. A single tuna can grow more than four meters long, weigh close to 700 kilograms, and eat 70 kilograms of food a day! It is unlikely that tuna farms can remain profitable while supplying so much expensive food for the tuna.
Third tuna confined to ocean cages are likely to become infested with parasites, organisms that feed on and weaken the animal they attach to. Tuna farmers off the coast of southern Australia have had problems with infestations of blood flukes, a type of parasite that lives within the blood vessels and heart of infected fish. Parasite infestations weaken tuna, slow their growth, and can even cause death, usually by making them susceptible to other diseases. Tuna farms in southern Australia have had 10 percent of their tuna die before they could be sold.
In the reading passage, the author concentrates on several arguments to prove that tuna farms have many problems and they are not feasible to use. However, the lecturer casts doubt on these arguments and respectively points out the problems with all the author's assertions and presents some promising solutions in this regard.
First of all, the author states that female tuna can not continue breeding in the cages, therefore, farmers have to capture young fish for their farms. This work causes in tuna to decline or extinction populations. On the other hand, the lecturer presented a solution by saying that hormones can help female tuna in order to lay eggs for reliable breeding. As a result, this solution can increase the number of tuna on the farms and stops tuna decline in the sea.
The second problem that the author presented in the passage has to do with the economical aspect of this kind of farm. The passage contends that feeding the tuna in the cage with animal protein is pricy. The lecturer, however, presents a solution for this problem by saying that they can use plant protein instead of the fish food protein. Moreover, he mentioned this kind of protein not only presents all the required protein for young tuna to grow, it is cheaper than animal protein as well.
Finally, the author refers to another problem which is parasite infestation. The organism that is attached to tuna weakens them and also vulnerable them to diseases. As an example, farmers have a problem with the infestation of blood flukes which is a common fish parasite on Australia's shore. On the other hand, with reference to the account of the lecturer, the parasites attacked many sites in Australia offshore that are close to shore. He illustrates that blood flukes decrease in deep water, accordingly, they can move the cages to deep water so that the blood flukes do not exist in that circumstance.
Grammar and spelling errors:
Line 3, column 204, Rule ID: ENGLISH_WORD_REPEAT_BEGINNING_RULE
Message: Three successive sentences begin with the same word. Reword the sentence or use a thesaurus to find a synonym.
... the cage with animal protein is pricy. The lecturer, however, presents a solution ...
^^^
Transition Words or Phrases used:
accordingly, also, finally, first, however, moreover, second, so, therefore, well, as to, kind of, as a result, first of all, with reference to, on the other hand
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 7.0 10.4613686534 67% => OK
Auxiliary verbs: 5.0 5.04856512141 99% => OK
Conjunction : 6.0 7.30242825607 82% => OK
Relative clauses : 13.0 12.0772626932 108% => OK
Pronoun: 27.0 22.412803532 120% => Less pronouns wanted
Preposition: 46.0 30.3222958057 152% => OK
Nominalization: 8.0 5.01324503311 160% => OK
Performance on vocabulary words:
No of characters: 1579.0 1373.03311258 115% => OK
No of words: 323.0 270.72406181 119% => OK
Chars per words: 4.88854489164 5.08290768461 96% => OK
Fourth root words length: 4.23936324884 4.04702891845 105% => OK
Word Length SD: 2.52050795408 2.5805825403 98% => OK
Unique words: 156.0 145.348785872 107% => OK
Unique words percentage: 0.482972136223 0.540411800872 89% => More unique words wanted or less content wanted.
syllable_count: 490.5 419.366225166 117% => OK
avg_syllables_per_word: 1.5 1.55342163355 97% => OK
A sentence (or a clause, phrase) starts by:
Pronoun: 6.0 3.25607064018 184% => OK
Article: 10.0 8.23620309051 121% => OK
Subordination: 2.0 1.25165562914 160% => OK
Conjunction: 0.0 1.51434878587 0% => OK
Preposition: 4.0 2.5761589404 155% => OK
Performance on sentences:
How many sentences: 15.0 13.0662251656 115% => OK
Sentence length: 21.0 21.2450331126 99% => OK
Sentence length SD: 33.8732277109 49.2860985944 69% => OK
Chars per sentence: 105.266666667 110.228320801 95% => OK
Words per sentence: 21.5333333333 21.698381199 99% => OK
Discourse Markers: 10.8 7.06452816374 153% => OK
Paragraphs: 4.0 4.09492273731 98% => OK
Language errors: 1.0 4.19205298013 24% => OK
Sentences with positive sentiment : 4.0 4.33554083885 92% => OK
Sentences with negative sentiment : 7.0 4.45695364238 157% => OK
Sentences with neutral sentiment: 4.0 4.27373068433 94% => OK
What are sentences with positive/Negative/neutral sentiment?
Coherence and Cohesion:
Essay topic to essay body coherence: 0.24102901208 0.272083759551 89% => OK
Sentence topic coherence: 0.0901217278523 0.0996497079465 90% => OK
Sentence topic coherence SD: 0.0636299671467 0.0662205650399 96% => OK
Paragraph topic coherence: 0.148950556432 0.162205337803 92% => OK
Paragraph topic coherence SD: 0.0462530426689 0.0443174109184 104% => OK
Essay readability:
automated_readability_index: 12.4 13.3589403974 93% => Automated_readability_index is low.
flesch_reading_ease: 58.62 53.8541721854 109% => OK
smog_index: 3.1 5.55761589404 56% => Smog_index is low.
flesch_kincaid_grade: 10.3 11.0289183223 93% => OK
coleman_liau_index: 11.08 12.2367328918 91% => OK
dale_chall_readability_score: 8.39 8.42419426049 100% => OK
difficult_words: 76.0 63.6247240618 119% => OK
linsear_write_formula: 10.5 10.7273730684 98% => OK
gunning_fog: 10.4 10.498013245 99% => OK
text_standard: 11.0 11.2008830022 98% => OK
What are above readability scores?
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Write the essay in 20 minutes.
Rates: 73.3333333333 out of 100
Scores by essay e-grader: 22.0 Out of 30
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Note: the e-grader does NOT examine the meaning of words and ideas. VIP users will receive further evaluations by advanced module of e-grader and human graders.