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Review
Peer-Review Record

Current Knowledge of Helminths of Wild Birds in Ecuador

Birds 2024, 5(1), 102-114; https://doi.org/10.3390/birds5010007
by Patricio D. Carrera-Játiva 1,2,* and Gustavo Jiménez-Uzcátegui 3
Reviewer 1: Anonymous
Reviewer 2: Anonymous
Birds 2024, 5(1), 102-114; https://doi.org/10.3390/birds5010007
Submission received: 22 December 2023 / Revised: 29 January 2024 / Accepted: 30 January 2024 / Published: 2 February 2024
(This article belongs to the Special Issue Feature Papers of Birds 2022–2023)

Round 1

Reviewer 1 Report

Comments and Suggestions for Authors

The manuscript reviews the available information on parasitic helminths infecting wild birds in Ecuador. It provides a literature review of a period of almost 60 years, but it reports only 17 peer-review and no peer-review scientific papers/dissertations (most of them without passing a peer-review process), revealing a poor helminthological baseline in Ecuadorian science. In this sense, the manuscript provides valuable information. In general, the manuscript is well-organized and the methodology is appropriate. Although I have some minor comments on the manuscript (see below), I’m not sure of the “validity” of the results of this review since half of references provided for helminths are bachelor/PhD theses (9/18 in my counting; see below) and, hence, they did not pass any peer-review process. In this sense, if the review is accepted, authors should explicitly discuss that half of studies found are not peer-reviewed papers, which may avoid future erroneous citations generalizing the results. Readers should be aware of this limitation when reading and citing this review.

 

Specific comments

Simple Summary, Abstract and Ln 31: Acantocephala is no longer considered a single phylum. Genetic markers (18S) place monophyletic Acantocephala together with Rotifera in a group called Syndermata. I suggest to show Acantocephala as “Syndermata: Acantocephala” thorough the manuscript.

Ln 9: parasitic helminths.

Ln 13 and 23: Remove “bibliographical reference” as it is assumed that any systematic review provide references.

Ln 30: Not all helminths are parasitic species (most of Nematoda species are free-living organisms). Re-write as “Helminths are metazoan (i.e., multicellular), most of them parasites, classified in three phyla”.

Ln 33: the range 100,000 to 350,000 species of helminths is an estimation, of which 80-90% are still unknown and thus not described. Re-write the sentence indicating that the data showed is an estimation.

Ln 34: Indicate that 16% of helminth diversity is estimated to be bird-specific.

Ln 35: remove “in the”.

Ln 36: “Helminths show different life cycles”.

Ln 40: “individual and population levels”.

Ln 45: “play a key role on ecosystem functioning”.

Ln 48: “in individuals with other infections (e.g., bacteria, viruses)”.

Ln 52: “Earth”.

Ln 55: Maybe express the distance in km instead of miles.

Ln 56: “high endemic fauna”.

Ln 61: Ectoparasites are not pathogens, separate from the list of pathogens.

Ln 70: “A systematic search following… was conducted”.

Ln 71: Why not update the online search? August 2020 is outdated and maybe some papers have been published from 2020 to nowadays. Indeed, you stated in line 87 that 3 studies (2021-2022) have been recently published. Better to update the systematic search and included those 3 papers (and maybe some more) within the “database search” paragraph.

Ln 92: remove “(wild bird species investigated)” as it was stated previously. Maybe simply write “host wild bird species”.

Ln 93: “geographical location of the study”.

Ln 107: “selected information”.

Ln 113: Authors state that 3 phyla were found, but only 2 were actually found (i.e., Trematoda and Nematoda, as any Acantocephala was found).

Ln 115: “genus level”.

Table: In the family Cyclocoelidae, the species Cyclocoelum obscurum is duplicated in two different rows, why not pool them? Idem for family Leucochloridiidae, species Urotocus fusiformis. Also, check scientific names because some have erroneous accent marks.

Results: Maybe I missed something, but the the data displayed in the main text do not coincide with the data provided in the Table (see below the table I constructed based on your data). I counted 18 references (not 17), 35 helminth taxa (not 36) and 64 bird taxa (not 66), including 1 at family level (not 3), 3 at genus level (not 2) and 60 at species level (not 61). Also, the types of documents (papers, PhD dissertations, etc.) in the text do not coincide with those in the Table. Please, re-analyse the data to correctly show the results.

 

Nº helminth taxa

Nº bird taxa

Nº Refs

Nematoda

Penelope obscura

30 – PhD dissertation

Dispharynx sp.

Penelope purpurascens

31 – Paper

Contracaecum sp.

Phoebastria irrorata

32 – Paper

Ascaridia sp.

Spheniscus mendiculus

20 – Paper

Ascaridia columbae

Coccyzus melacoryphus

33 – Bachelor dissertation

Ascaridia galli

Crotophaga ani

29 – Bachelor dissertation

Heterakis gallinarum

Setophaga petechia aureola

43 – Bachelor dissertation

Heterakis sp.

Bubulcus ibis

37 – Bachelor dissertation

Capillaria sp.

Phalacrocorax harrisi

38 – Bachelor dissertation

Onchocercidae gen. sp.

Mustelirallus erythrops

34 – Paper

Strongyloidea gen. sp.

Nyctanassa violacea pauper

35 – Bachelor dissertation

Strongyloides sp.

Pelecanus occidentalis urinator

36 – Bachelor dissertation

Trichuris sp.

Phoebastria irrorata

44 – Paper

Cestoda

Anhima cornuta

45 – Paper

Hymenolepis nana

Camarhynchus pallidus

41 – Paper

Tetrabothrius sp.

Chlauna torquata

40 – PhD dissertation

Gen. nov. Cestoda gen. sp.

Columba livia

46 – Paper

Trematoda

Megascops albogularis

42 – Paper

Brachylaimidae gen. sp.

Patagioenas fasciata

 

Cyclocoelum obscurum

Pavo cristatus

 

Cyclocoelum tringae

Phalcoboenus carunculatus

 

Selfcoelum brasilianum

Sarcoramphus papa

 

Bothrigaster variolaris

Vultur gryphus

 

Lubens lubens

Amazona amazonica

 

Zonorchis meyeri

Amazona autumnalis

 

Zonorchis delectans

Psittacara erythrogenys

 

Brachylecithum rarum

Anatidae

 

Heterophyidae gen. sp.

Anser spp.

 

Neodiplostomum sp.

Fulica ardesiaca

 

Neodiplostomum ellipticum

Phalacrocorax brasilianus

 

Echinostomatidae gen. sp.

Ara macao

 

Tanaisia bragai

Cygnus spp.

 

Tanaisia fedtschenkoi

Amazona farinosa

 

Urotocus fusiformis

Ara severus

 

Leucochloridium sp.

Formicarius analis

 

Prosthogonimus cuneatus

Formicarius colma

 

Renicola sp.

Calidris melanotos

 

Cardiocephaloides sp.

Tringa solitaria

 

 

Rostrhamus sociabilis

 

 

Gymnopithys leucaspis

 

 

Willisornis poecilinotus

 

 

Phlegopsis erythroptera

 

 

Pygiptila stellaris

 

 

Thamnomanes ardesiacus

 

 

Laterallus sp.

 

 

Laterallus spilonota

 

 

Cymbilaimus lineatus

 

 

Epinecrophylla ornata

 

 

Hypocnemis cantator

 

 

Myrmelastes hyperythrus

 

 

Myrmoborus myotherinus

 

 

Myrmotherula axillaris

 

 

Isleria hauxwelli

 

 

Myrmotherula schisticolor

 

 

Phlegopsis nigromaculata

 

 

Myrmelastes leucostigma

 

 

Thamnomanes caesius

 

 

Chamaeza nobilis

 

 

Hafferia fortis

 

 

Frederickena undiliger

 

 

Hylophylax naevius

 

 

Myrmothera campanisona

 

 

Sclateria naevia

 

 

Sula nebouxii

 

 

Figure: Please, add the scale.

Ln 170: Now 19 records? They were 17 at the beginning… And I counted 18.

Ln 172: “parasitic helminths”. Also, update the number of taxa (helminths and birds) thorough the discussion (see above my comment on results).

Ln 175-178: I suggest authors to go more in deep on this point, i.e., take into account that most studies are not peer-reviewed papers and, thus, conclusions and future citations should consider this limitation.

Ln 182: “molecular tools”.

Ln 185: Added to Díaz et al. (2022), maybe cite also Binkiene et al. (2021) (Parasites & Vectors, 14: 137. Doi: 10.1186/s13071-021-04614-8), which call for more genetic studies on parasitic avian nematodes.

Ln 189: “only 3 out of 18 studies were performed in the Amazon region”.

Ln 191: “distributed through high diversity Ecuadorian areas, such as…”.

Ln 201: infecting, not affecting since you do not check for the effects of helminths.

References: check the references because there are some mistakes. Also, add bachelor or PhD thesis when citing the respective dissertations.

Comments on the Quality of English Language

/

Author Response

Dr. Jukka Jokimäki

Editor-in-Chief

Birds

 

Dear Dr. Jokimäki

 

We wish to submit a revised version of an article entitled “Current Knowledge of Helminths of Wild Birds in Ecuador” for consideration by the Journal of Birds.

Sincerest thanks for your response on the manuscript. We appreciate the valuable and useful contribution made by the reviewers, which definitely helped to improve the manuscript.

We have modified the paper in response to the extensive and insightful reviewers’ comments. We have re-written and add some sections in the results and discussion to fully address the reviewers’ comments. Please find revised text highlighted in red color.

Please find in the next section the point-by-point responses to reviewers’ comment.

We look forward to hearing from you regarding our submission. We would be glad to respond to any further questions and comments that you may have.

 

Thank you for your consideration.

 

Reviewer #1:

The manuscript reviews the available information on parasitic helminths infecting wild birds in Ecuador. It provides a literature review of a period of almost 60 years, but it reports only 17 peer-review and no peer-review scientific papers/dissertations (most of them without passing a peer-review process), revealing a poor helminthological baseline in Ecuadorian science. In this sense, the manuscript provides valuable information. In general, the manuscript is well-organized and the methodology is appropriate. Although I have some minor comments on the manuscript (see below), I’m not sure of the “validity” of the results of this review since half of references provided for helminths are bachelor/PhD theses (9/18 in my counting; see below) and, hence, they did not pass any peer-review process. In this sense, if the review is accepted, authors should explicitly discuss that half of studies found are not peer-reviewed papers, which may avoid future erroneous citations generalizing the results. Readers should be aware of this limitation when reading and citing this review.

Specific comments

  1. Simple Summary, Abstract and Ln 31: Acantocephala is no longer considered a single phylum. Genetic markers (18S) place monophyletic Acantocephala together with Rotifera in a group called Syndermata. I suggest to show Acantocephala as “Syndermata: Acantocephala” thorough the manuscript.

We agree with the reviewer´s comment. Changes has been made as indicated.

  1. Ln 9: parasitic helminths. Ln 13 and 23: Remove “bibliographical reference” as it is assumed that any systematic review provide references. Ln 30: Not all helminths are parasitic species (most of Nematoda species are free-living organisms). Re-write as “Helminths are metazoan (i.e., multicellular), most of them parasites, classified in three phyla”. Ln 33: the range 100,000 to 350,000 species of helminths is an estimation, of which 80-90% are still unknown and thus not described. Re-write the sentence indicating that the data showed is an estimation. Ln 34: Indicate that 16% of helminth diversity is estimated to be bird-specific.

We agree with the reviewer and have revised sections accordingly.

  1. Ln 35: remove “in the”. Ln 36: “Helminths show different life cycles”. Ln 40: “individual and population levels”. Ln 45: “play a key role on ecosystem functioning”. Ln 48: “in individuals with other infections (e.g., bacteria, viruses)”. Ln 52: “Earth”. Ln 55: Maybe express the distance in km instead of miles. Ln 56: “high endemic fauna”. Ln 61: Ectoparasites are not pathogens, separate from the list of pathogens. Ln 70: “A systematic search following… was conducted”.

Grammatical errors were modified as indicated.

  1. Ln 71: Why not update the online search? August 2020 is outdated and maybe some papers have been published from 2020 to nowadays. Indeed, you stated in line 87 that 3 studies (2021-2022) have been recently published. Better to update the systematic search and included those 3 papers (and maybe some more) within the “database search” paragraph.

We agree with the reviewer and have revised sections accordingly

  1. Ln 92: remove “(wild bird species investigated)” as it was stated previously. Maybe simply write “host wild bird species”. Ln 93: “geographical location of the study”. Ln 107: “selected information”. Ln 113: Authors state that 3 phyla were found, but only 2 were actually found (i.e., Trematoda and Nematoda, as any Acantocephala was found). Ln 115: “genus level”.

Grammatical errors were modified as indicated.

  1. Table: In the family Cyclocoelidae, the species Cyclocoelum obscurumis duplicated in two different rows, why not pool them? Idem for family Leucochloridiidae, species Urotocus fusiformis.

We agree with the reviewer and have revised sections accordingly

  1. Also, check scientific names because some have erroneous accent marks.

Grammatical errors were modified as indicated.

  1. Results: Maybe I missed something, but the the data displayed in the main text do not coincide with the data provided in the Table (see below the table I constructed based on your data). I counted 18 references (not 17), 35 helminth taxa (not 36) and 64 bird taxa (not 66), including 1 at family level (not 3), 3 at genus level (not 2) and 60 at species level (not 61). Also, the types of documents (papers, PhD dissertations, etc.) in the text do not coincide with those in the Table. Please, re-analyse the data to correctly show the results.

We agree with the reviewer and have revised sections accordingly.

  1. Figure: Please, add the scale.

Changes have been made accordingly

  1. Ln 170: Now 19 records? They were 17 at the beginning… And I counted 18. Ln 172: “parasitic helminths”. Also, update the number of taxa (helminths and birds) thorough the discussion (see above my comment on results).

We appreciate the reviewer’s comment, and we have revised sections accordingly.

  1. Ln 175-178: I suggest authors to go more in deep on this point, i.e., take into account that most studies are not peer-reviewed papers and, thus, conclusions and future citations should consider this limitation.

We appreciate the reviewer’s comment, and we have developed and rewritten the discussion section.

  1. Ln 182: “molecular tools”. Ln 185: Added to Díaz et al. (2022), maybe cite also Binkiene et al. (2021) (Parasites & Vectors, 14: 137. Doi: 10.1186/s13071-021-04614-8), which call for more genetic studies on parasitic avian nematodes.

We agree with the reviewer and have revised sections accordingly.

  1. Ln 189: “only 3 out of 18 studies were performed in the Amazon region”. Ln 191: “distributed through high diversity Ecuadorian areas, such as…”. Ln 201: infecting, not affecting since you do not check for the effects of helminths.

Grammatical errors were modified as indicated.

  1. References: check the references because there are some mistakes. Also, add bachelor or PhD thesis when citing the respective dissertations.

We agree with the reviewer and have revised sections accordingly.

 

Author Response File: Author Response.pdf

Reviewer 2 Report

Comments and Suggestions for Authors

The manuscript is a well-written overview of helminths in birds from Ecuador. The authors followed all the rules in literature search and preparing the manuscript. The review is carried out in accordance with all the rules of similar review articles. The authors have collected all the available English and Spanish-language literature on this theme. Of course, there are quite a few sources for analysis (17 in total).

 

However, I believe that the paper needs to be improved in order to be published. My comments and suggestions are as follows:

1. Why was the literature search limited to only two databases? Why the authors did not look for information in the most well-known databases Web of Science and Scopus?

2. The map still needs to be redone. The Galapagos Islands should be located where they should be - to the left of the mainland. The map should also have a scale. And it is better to place the names of provinces on the map.

3. The authors provide information about helminths found in birds of Ecuador in the form of a table, but the Discussion does not contain an analysis of this data.

What are the most common parasite species (families, classes) in birds of Ecuador? Are host-specific parasites identified or are the identified parasite species broadly specific? Common geographical distribution of detected helminths. Do helminths found in birds have veterinary or medical significance as potential pathogens? Etc.

 

4. Table 1 needs to be redone. The first and second columns should be combine to “Helminth species”, where family name of helminths and phylum name will appear above the species name:

Cestoda

Hymenolepididae

Hymenolepis nana (Weinland, 1858)

 

Column title “Site in Host” better fix it to “Localization” or “Site of infection”.

In column “Host species” only the Latin names of birds should be left. In scientific articles, try not to use common animal names, please use only Latin.

 

Please check Table 1. Especially with regards to the Latin names of helminths. For example, correct name of the parasites – Hymenolepis nana (Siebold, 1852), Cyclocoelum tringae (Stossich, 1902). Check all Latin names.

Cyclocoelum obscurum is mentioned twice. Perhaps you should combine data.

Also check use of italics; typos (Tringa solitaria (Wilson, 1813) (Wilson, 18132)) .

According to the rules of International Code of Zoological Nomenclature (ICZN), only one author is given after the Latin name. For example, Cyclocoelum obscurum (Leidy, 1887).

5. Information from lines 114-116 should be included to the Abstract.Thirty-six helminth taxa” looks wrong.

 

6. So how many sources did you find on the topic - 17 (line 106) or 19 (line 171)?

 

And some small remarks:

In key words – “Animals” are unnecessary. This keyword need be deleted.

Please provide references in the text and in Table 1 in regular font, not superscript.

Subsections in Materials and Methods should be numbered as in Results. And write words in capital letters (2.1. Database Search)

Line 185 – Please, make reference according to MDPI journal rules.

Authors contribution. Please, use only name initials here.

In my opinion, the manuscript can be published, but some corrections are needed.

Author Response

January 22st, 2024

 

Dr. Jukka Jokimäki

Editor-in-Chief

Birds

 

Dear Dr. Jokimäki

 

We wish to submit a revised version of an article entitled “Current Knowledge of Helminths of Wild Birds in Ecuador” for consideration by the Journal of Birds.

Sincerest thanks for your response on the manuscript. We appreciate the valuable and useful contribution made by the reviewers, which definitely helped to improve the manuscript.

We have modified the paper in response to the extensive and insightful reviewers’ comments. We have re-written and add some sections in the results and discussion to fully address the reviewers’ comments. Please find revised text highlighted in red color.

Please find in the next section the point-by-point responses to reviewers’ comment.

We look forward to hearing from you regarding our submission. We would be glad to respond to any further questions and comments that you may have.

 

Thank you for your consideration.

Reviewer #2:

The manuscript is a well-written overview of helminths in birds from Ecuador. The authors followed all the rules in literature search and preparing the manuscript. The review is carried out in accordance with all the rules of similar review articles. The authors have collected all the available English and Spanish-language literature on this theme. Of course, there are quite a few sources for analysis (17 in total). However, I believe that the paper needs to be improved in order to be published. My comments and suggestions are as follows:

 

  1. Why was the literature search limited to only two databases? Why the authors did not look for information in the most well-known databases Web of Science and Scopus?

 

We agree with the reviwer´s comment. Web of Science and Scopus Databases have been included in the systematic search.

 

  1. The map still needs to be redone. The Galapagos Islands should be located where they should be - to the left of the mainland.The map should also have a scale. And it is better to place the names of provinces on the map.

 

Changes have been made accordingly

 

  1. The authors provide information about helminths found in birds of Ecuador in the form of a table, but the Discussion does not contain an analysis of this data. What are the most common parasite species (families, classes) in birds of Ecuador? Are host-specific parasites identified or are the identified parasite species broadly specific? Common geographical distribution of detected helminths. Do helminths found in birds have veterinary or medical significance as potential pathogens? Etc.

 

  1. Table 1 needs to be redone. The first and second columns should be combine to “Helminth species”, where family name of helminths and phylum namewill appear above the species name:

Cestoda

Hymenolepididae

Hymenolepis nana (Weinland, 1858)

 

Column title “Site in Host” better fix it to “Localization” or “Site of infection”.

In column “Host species” only the Latin names of birds should be left. In scientific articles, try not to use common animal names, please use only Latin.

 

We appreciate reviewer’s comment. To follow the editor´s suggestion, common names have been kept in table, but the order of information has been updated.

 

  1. Please check Table 1. Especially with regards to the Latin names of helminths. For example, correct name of the parasites –Hymenolepis nana (Siebold, 1852), Cyclocoelum tringae (Stossich, 1902). Check all Latin names.

 

We appreciate the reviewer[s comment. Latin names of helminths and their authoritative references were in accordance the the Global Biodiversity Information Facility (https://www.gbif.org/). In this sense, it appears as Cyclocoelum tringae (Brandes, 1892). Nevertheless, parasites names were re-check according to the GBIF web page.

 

  1. Cyclocoelum obscurumis mentioned twice. Perhaps you should combine data. Also check use of italics; typos (Tringa solitaria (Wilson, 1813) (Wilson, 18132)) .

 

Changes have been made accordingly

 

  1. According to the rules of International Code of Zoological Nomenclature (ICZN), only one author is given after the Latin name. For example, Cyclocoelum obscurum(Leidy, 1887).

 

Changes have been made accordingly

 

  1. Information from lines 114-116 should be included to the Abstract.“Thirty-six helminth taxa” looks wrong. So how many sources did you find on the topic - 17 (line 106) or 19 (line 171)?

 

We appreciate the reviewer’s comment, and we have revised sections accordingly.

 

  1. And some small remarks: In key words – “Animals” are unnecessary. This keyword need be deleted.. Please provide references in the text and in Table 1 in regular font, not superscript. Subsections in Materials and Methods should be numbered as in Results. And write words in capital letters (1. Database Search) Line 185 – Please, make reference according to MDPI journal rules. Authors contribution. Please, use only name initials here. In my opinion, the manuscript can be published, but some corrections are needed.

We appreciate the reviewer’s comment, and we have revised sections accordingly.

Author Response File: Author Response.pdf

Round 2

Reviewer 1 Report

Comments and Suggestions for Authors

The manuscript has improved considerably after the revisions of the Editor and Reviewers, especially concerning the PRISMA methodology and exposition of results. Some minor changes, together with those pointed out by the second reviewer, need to be addressed before the acceptance:

- Ln 35: Remove the second "still".

- Ln 36: helminth species instead of helminth diversity

- Ln 80: Remove i.e.

- Ln 104: include a space before [32]

- Ln 114: write as Fig. 1

- Ln 115: Reviewed literature was published and was carried out

- Ln 134: at family level

- Ln 140: from which 9 are endemic in Ecuador.

- Ln 152: sample sizes ranging from 1 to 68...

- Ln 153: remove oscillated

 - Ln 154: add ranging

- Ln 156: latin name S. mendiculus

- Ln 158: also add ranging

- Ln 206: Change to: "This highlights the need for more research on helminths parasitizing wild birds in Ecuador".

- Ln 208: a peer-review process

- Ln 209: put in number (40)

- Ln 226: remove both

- Ln 229: insert a space before [10]. Also, better to define "Host immunosupression".

- Ln 231: with stressful and overcrowding conditions

- Ln 237: add a comma after conditions

- Ln 260: add a comma after sense

Author Response

Dr. Jukka Jokimäki

Editor-in-Chief

Birds

 

Dear Dr. Jokimäki

 

We wish to submit a revised version of an article entitled “Current Knowledge of Helminths of Wild Birds in Ecuador” for consideration by the Journal of Birds.

Sincerest thanks for your response on the manuscript. We appreciate the valuable and useful contribution made by the reviewers, which definitely helped to improve the manuscript in this final version.

We have modified the paper in response to the reviewers’ comments. Please find revised text highlighted in red color.

Please find in the next section the point-by-point responses to reviewers’ comment.

We look forward to hearing from you regarding our submission. We would be glad to respond to any further questions and comments that you may have.

 

Thank you for your consideration.

 

Reviewer #1:

The manuscript has improved considerably after the revisions of the Editor and Reviewers, especially concerning the PRISMA methodology and exposition of results. Some minor changes, together with those pointed out by the second reviewer, need to be addressed before the acceptance:

- Ln 35: Remove the second "still". Ln 36: helminth species instead of helminth diversity. Ln 80: Remove i.e. Ln 104: include a space before [32]. Ln 114: write as Fig. 1. Ln 115: Reviewed literature was published and was carried out. Ln 134: at family level. Ln 140: from which 9 are endemic in Ecuador. Ln 152: sample sizes ranging from 1 to 68... Ln 153: remove oscillated. Ln 154: add ranging. Ln 156: latin name S. mendiculus. Ln 158: also add ranging. Ln 206: Change to: "This highlights the need for more research on helminths parasitizing wild birds in Ecuador". Ln 208: a peer-review process. Ln 209: put in number (40). Ln 226: remove both. Ln 229: insert a space before [10]. Also, better to define "Host immunosupression". Ln 231: with stressful and overcrowding conditions. Ln 237: add a comma after conditions. Ln 260: add a comma after sense.

We agree with the reviewer and have revised sections accordingly.

Author Response File: Author Response.pdf

Reviewer 2 Report

Comments and Suggestions for Authors

The article by Ecuadorian colleagues has become much better. But there were (and still appeared) minor errors:

1. Lines 23,129 – It would be more correct to write it like this: “Nematodes of the genus Ascaridia Dujardin, 1844 …”

2. correct writing: “… the Rock pigeon Columba livia Gmelin, 1789 …” And there is no need to put the Latin name in parenthesis here. The same corrections need to be made in lines 141-147.

3. According the rules of MDPI all words in names of subsections must be capitalized: “2.1. Database Search;   2.2. Study Selection, etc.”

4. A paragraph cannot consist of one sentence (129-131). Therefore, such single sentences must be attached above or below.

5. correct writing: “… Onchocercidae gen. sp.  …” (Line 156)

6. In Table 1 – Please, follow the International Code of Zoological Nomenclature: Only one Author!

          Selfcoelum brasilianum (Stossich, 1903)     without Dronen & Blend

          Lubens lubens (Braun, 1901)     without Travassos

           Zonorchis delectans (Braun, 1901)   without Travassos

After correcting these minor errors, the article is ready for publication.

Author Response

Dr. Jukka Jokimäki

Editor-in-Chief

Birds

 

Dear Dr. Jokimäki

 

We wish to submit a revised version of an article entitled “Current Knowledge of Helminths of Wild Birds in Ecuador” for consideration by the Journal of Birds.

Sincerest thanks for your response on the manuscript. We appreciate the valuable and useful contribution made by the reviewers, which definitely helped to improve the manuscript in this final version.

We have modified the paper in response to the reviewers’ comments. Please find revised text highlighted in red color.

Please find in the next section the point-by-point responses to reviewers’ comment.

We look forward to hearing from you regarding our submission. We would be glad to respond to any further questions and comments that you may have.

 

Thank you for your consideration.

 

Reviewer #2:

The article by Ecuadorian colleagues has become much better. But there were (and still appeared) minor errors:

Lines 23,129 – It would be more correct to write it like this: “Nematodes of the genus Ascaridia Dujardin, 1844 …” correct writing: “… the Rock pigeon Columba livia Gmelin, 1789 …” And there is no need to put the Latin name in parenthesis here. The same corrections need to be made in lines 141-147. According the rules of MDPI all words in names of subsections must be capitalized: “2.1. Database Search;   2.2. Study Selection, etc.” A paragraph cannot consist of one sentence (129-131). Therefore, such single sentences must be attached above or below. correct writing: “… Onchocercidae gen. sp.  …” (Line 156). In Table 1 – Please, follow the International Code of Zoological Nomenclature: Only one Author! Selfcoelum brasilianum (Stossich, 1903)     without Dronen & Blend Lubens lubens (Braun, 1901)     without Travassos Zonorchis delectans (Braun, 1901)   without Travassos. After correcting these minor errors, the article is ready for publication.

We agree with the reviewer and have revised sections accordingly.

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