نتایج جستجو برای: batoids fishes

تعداد نتایج: 19194  

Journal: :Nature 1930

متن کامل
Journal: :Nature 1968

متن کامل
Journal: :iranian journal of ichthyology 0
alireza radkhah department of fisheries, faculty of natural resources, university of tehran, karaj, iran. soheil eagderi department of fisheries, faculty of natural resources, university of tehran, karaj, iran.

this research was conducted to study the length-weight and length-length relationships and condition factor of six cyprinid fish species viz. alburnus atropatena , barbus lacerta , capoeta capoeta , carrasius gibelio , romanogobio macropterus and pseudorasbora parva from zarrineh river (urmia lake basin, iran). a total of 188 specimens ranging from 2.9 to 21.4cm in total length and 0.22 to 176g...

متن کامل
Journal: :iranian journal of parasitology 0
rahul gupta amity institute of biotechnology, amity university uttar pradesh, lucknow-226028, india. ramakant maurya department of zoology, university of lucknow, lucknow-226007, uttar pradesh, india. anand murari saxena department of zoology, university of lucknow, lucknow-226007, uttar pradesh, india.

background: acanthocephalans are fish parasites of worldwide distribu-tion, penetrate their thorny proboscis into the intestinal wall of host and absorb nutrients. no diagnostic tool is available except postmortem inves-tigations and identification by parasitologists. the aim of present study was to explore and assign taxonomical status to pallisentis species prevalent in food fishes of river g...

متن کامل
Journal: :تحقیقات دامپزشکی 0
کاظم عبدی دانشکده دامپزشکی دانشگاه تهران بابا مخیر دانشکده دامپزشکی دانشگاه تهران بهیار جلالی واحد علوم و تحقیقات دانشگاه آزاد ایرج موبدی دانشکده بهداشت دانشگاه تهران محمد رضا احمدی دانشکده دامپزشکی دانشگاه تهران سعید میرزرگر دانشکده دامپزشکی دانشگاه تهران بهنام مشکی

monogenetic termatodes are exoparasites of iranian freshwater fishes with high pervalency in both wild and cultured fishes which cause economoic loss each year. the aim of the present study was to detect parasites of gills in yellow- fin seabreams of persian gulf. this study was conducted for one year (between autumn 2007 to autumn 2008) on both wild and cultured yellow-fin seabreams of persian...

متن کامل
Journal: :The Journal of experimental biology 1950
J C MOTT

Comparatively little work appears to have been done on the circulation in the intact living fish, particularly in the bony fish. This paper describes the circulation in the common eel using angiographic methods. This species is convenient as it can be fairly easily obtained in the autumn and winter, is tolerant of laboratory conditions and can survive for some time out of water. As no general d...

متن کامل
Journal: :Proceedings of the National Academy of Sciences of the United States of America 2009
Rosamond L Naylor Ronald W Hardy Dominique P Bureau Alice Chiu Matthew Elliott Anthony P Farrell Ian Forster Delbert M Gatlin Rebecca J Goldburg Katheline Hua Peter D Nichols

Aquaculture's pressure on forage fisheries remains hotly contested. This article reviews trends in fishmeal and fish oil use in industrial aquafeeds, showing reduced inclusion rates but greater total use associated with increased aquaculture production and demand for fish high in long-chain omega-3 oils. The ratio of wild fisheries inputs to farmed fish output has fallen to 0.63 for the aquacul...

متن کامل
Journal: :Kagaku To Seibutsu 1985

متن کامل
Journal: :Nature 1890

متن کامل
Journal: :Public Health Reports (1896-1970) 1958

متن کامل

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید

function paginate(evt) { url=/search_year_filter/ var term=document.getElementById("search_meta_data").dataset.term pg=parseInt(evt.target.text) var data={ "year":filter_year, "term":term, "pgn":pg } filtered_res=post_and_fetch(data,url) window.scrollTo(0,0); } function update_search_meta(search_meta) { meta_place=document.getElementById("search_meta_data") term=search_meta.term active_pgn=search_meta.pgn num_res=search_meta.num_res num_pages=search_meta.num_pages year=search_meta.year meta_place.dataset.term=term meta_place.dataset.page=active_pgn meta_place.dataset.num_res=num_res meta_place.dataset.num_pages=num_pages meta_place.dataset.year=year document.getElementById("num_result_place").innerHTML=num_res if (year !== "unfilter"){ document.getElementById("year_filter_label").style="display:inline;" document.getElementById("year_filter_place").innerHTML=year }else { document.getElementById("year_filter_label").style="display:none;" document.getElementById("year_filter_place").innerHTML="" } } function update_pagination() { search_meta_place=document.getElementById('search_meta_data') num_pages=search_meta_place.dataset.num_pages; active_pgn=parseInt(search_meta_place.dataset.page); document.getElementById("pgn-ul").innerHTML=""; pgn_html=""; for (i = 1; i <= num_pages; i++){ if (i===active_pgn){ actv="active" }else {actv=""} pgn_li="
  • " +i+ "
    • "; pgn_html+=pgn_li; } document.getElementById("pgn-ul").innerHTML=pgn_html var pgn_links = document.querySelectorAll('.mypgn'); pgn_links.forEach(function(pgn_link) { pgn_link.addEventListener('click', paginate) }) } function post_and_fetch(data,url) { showLoading() xhr = new XMLHttpRequest(); xhr.open('POST', url, true); xhr.setRequestHeader('Content-Type', 'application/json; charset=UTF-8'); xhr.onreadystatechange = function() { if (xhr.readyState === 4 && xhr.status === 200) { var resp = xhr.responseText; resp_json=JSON.parse(resp) resp_place = document.getElementById("search_result_div") resp_place.innerHTML = resp_json['results'] search_meta = resp_json['meta'] update_search_meta(search_meta) update_pagination() hideLoading() } }; xhr.send(JSON.stringify(data)); } function unfilter() { url=/search_year_filter/ var term=document.getElementById("search_meta_data").dataset.term var data={ "year":"unfilter", "term":term, "pgn":1 } filtered_res=post_and_fetch(data,url) } function deactivate_all_bars(){ var yrchart = document.querySelectorAll('.ct-bar'); yrchart.forEach(function(bar) { bar.dataset.active = false bar.style = "stroke:#71a3c5;" }) } year_chart.on("created", function() { var yrchart = document.querySelectorAll('.ct-bar'); yrchart.forEach(function(check) { check.addEventListener('click', checkIndex); }) }); function checkIndex(event) { var yrchart = document.querySelectorAll('.ct-bar'); var year_bar = event.target if (year_bar.dataset.active == "true") { unfilter_res = unfilter() year_bar.dataset.active = false year_bar.style = "stroke:#1d2b3699;" } else { deactivate_all_bars() year_bar.dataset.active = true year_bar.style = "stroke:#e56f6f;" filter_year = chart_data['labels'][Array.from(yrchart).indexOf(year_bar)] url=/search_year_filter/ var term=document.getElementById("search_meta_data").dataset.term var data={ "year":filter_year, "term":term, "pgn":1 } filtered_res=post_and_fetch(data,url) } } function showLoading() { document.getElementById("loading").style.display = "block"; setTimeout(hideLoading, 10000); // 10 seconds } function hideLoading() { document.getElementById("loading").style.display = "none"; } -->