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
The reading and the lecture are both about the concerns about tuna farming. The author of the reading feels that tuna farming has faced some obstacles. The lecturer challenges the claims made by the author. He believes that there are promising solutions to overcome these problems.
To begin with, the author argues that females in tuna farms cannot lay eggs. The article mentions that caging tuna without reproducing is going to worsen the decline of tuna populations. This specific argument is challenged by the lecturer. He claims that this problem can be solved by injecting females in the tuna farm with hormones. Additionally, he says that these hormones will allow laying eggs and increasing the number of tuna on the farm.
Secondly, the writer suggests that the tuna farm will cost a huge amount of money. In the article, it is said that tuna feed on high-protein food derived from fish, and this kind of food is expensive. The lecturer, however, refutes this by mentioning that getting protein does not have to be from fish. He elaborates on this by bringing up the point that cheap plants can provide all types of protein and can be used in the tuna farm.
Finally, the author posits that the tuna in the tuna farm can be infected with parasites that might weaken the tuna. In contrast, the lecturer notes that it has been found that the tuna caged in deep-sea will get sick, while the tuna near the shore is healthy and does not have any diseases. His position is that the cage better is placed near the shore.
Grammar and spelling errors:
Line 1, column 153, 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.
... tuna farming has faced some obstacles. The lecturer challenges the claims made by ...
^^^
Line 1, column 231, Rule ID: PROGRESSIVE_VERBS[1]
Message: This verb is normally not used in the progressive form. Try a simple form instead.
...e by the author. He believes that there are promising solutions to overcome these problems. ...
^^^^^^^^^^^^^
Transition Words or Phrases used:
finally, however, if, second, secondly, so, while, in contrast, kind of, to begin with
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 14.0 10.4613686534 134% => OK
Auxiliary verbs: 9.0 5.04856512141 178% => OK
Conjunction : 5.0 7.30242825607 68% => OK
Relative clauses : 15.0 12.0772626932 124% => OK
Pronoun: 29.0 22.412803532 129% => Less pronouns wanted
Preposition: 36.0 30.3222958057 119% => OK
Nominalization: 2.0 5.01324503311 40% => More nominalizations (nouns with a suffix like: tion ment ence ance) wanted.
Performance on vocabulary words:
No of characters: 1263.0 1373.03311258 92% => OK
No of words: 267.0 270.72406181 99% => OK
Chars per words: 4.73033707865 5.08290768461 93% => OK
Fourth root words length: 4.04229324003 4.04702891845 100% => OK
Word Length SD: 2.33104474126 2.5805825403 90% => OK
Unique words: 143.0 145.348785872 98% => OK
Unique words percentage: 0.535580524345 0.540411800872 99% => OK
syllable_count: 385.2 419.366225166 92% => OK
avg_syllables_per_word: 1.4 1.55342163355 90% => OK
A sentence (or a clause, phrase) starts by:
Pronoun: 7.0 3.25607064018 215% => Less pronouns wanted as sentence beginning.
Article: 9.0 8.23620309051 109% => OK
Subordination: 1.0 1.25165562914 80% => OK
Conjunction: 1.0 1.51434878587 66% => OK
Preposition: 3.0 2.5761589404 116% => OK
Performance on sentences:
How many sentences: 16.0 13.0662251656 122% => OK
Sentence length: 16.0 21.2450331126 75% => The Avg. Sentence Length is relatively short.
Sentence length SD: 30.862598724 49.2860985944 63% => OK
Chars per sentence: 78.9375 110.228320801 72% => OK
Words per sentence: 16.6875 21.698381199 77% => OK
Discourse Markers: 5.375 7.06452816374 76% => OK
Paragraphs: 4.0 4.09492273731 98% => OK
Language errors: 2.0 4.19205298013 48% => OK
Sentences with positive sentiment : 5.0 4.33554083885 115% => 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: 0.309627491726 0.272083759551 114% => OK
Sentence topic coherence: 0.105010903308 0.0996497079465 105% => OK
Sentence topic coherence SD: 0.0627734369726 0.0662205650399 95% => OK
Paragraph topic coherence: 0.192897091665 0.162205337803 119% => OK
Paragraph topic coherence SD: 0.0403643472479 0.0443174109184 91% => OK
Essay readability:
automated_readability_index: 9.2 13.3589403974 69% => Automated_readability_index is low.
flesch_reading_ease: 72.16 53.8541721854 134% => OK
smog_index: 3.1 5.55761589404 56% => Smog_index is low.
flesch_kincaid_grade: 7.2 11.0289183223 65% => OK
coleman_liau_index: 9.86 12.2367328918 81% => OK
dale_chall_readability_score: 8.16 8.42419426049 97% => OK
difficult_words: 63.0 63.6247240618 99% => OK
linsear_write_formula: 5.5 10.7273730684 51% => Linsear_write_formula is low.
gunning_fog: 8.4 10.498013245 80% => OK
text_standard: 10.0 11.2008830022 89% => OK
What are above readability scores?
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Rates: 76.6666666667 out of 100
Scores by essay e-grader: 23.0 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.