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首页> 外文期刊>Journal of Parasitology >FOUR NEW SPECIES OF ACANTHOBOTHRIUM (CESTODA: TETRAPHYLLIDEA) FROM THE WHIPTAIL STINGRAY DASYATIS BREVIS IN THE GULF OF CALIFORNIA, MEXICO
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FOUR NEW SPECIES OF ACANTHOBOTHRIUM (CESTODA: TETRAPHYLLIDEA) FROM THE WHIPTAIL STINGRAY DASYATIS BREVIS IN THE GULF OF CALIFORNIA, MEXICO

机译：来自墨西哥湾的惠氏飞翅达西斯·布雷维斯的四新类ANT虫（CES虫：四环LL）

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摘要

Examination of the spiral intestines of 29 whiptail stingrays, Dasyatis brevis, from 6 sites in the Gulf of California, México in 1993 and 1996 resulted in the discovery of 4 new species of Acanthobothrium: Acanthobothrium bullardi, Acanthobothrium dasi, Acanthobothrium rajivi, and Acanthobothrium soberoni. This brings the total number of species of Acanthobothrium known from the eastern Pacific Ocean to 34. With 22 additional species reported from elasmobranchs from the western Atlantic Ocean, and over 100 species globally, the number of interspecific comparisons required to justify the designation of a new species is rather unwieldy. To facilitate these and future comparisons, and in the absence of a phylogenetic hypothesis for this genus, the 56 species of Acanthobothrium from these 2 geographic regions were categorized for 4 characters: total length (≤ or >15 mm), number of segments (≤ or >50 segments), number of testes (≤ or >80), and symmetry of poral and aporal ovarian lobes. These 56 taxa and their categories are presented in tabular form. Based on these characters, A. bullardi, A. dasi, and A. rajivi are category 2 species (they are relatively small, possess few segments, relatively few testes, and exhibit asymmetrical ovaries); A. soberoni is a category 6 species (it is a relatively longer worm with a larger number of segments, but with fewer testes and an asymmetrical ovary). All 4 species differ from 1 another and from species in other geographic regions in further subtleties of these 4 characters as well as hook size and relative length of hook prongs, cirrus sac size, genital pore position, number of columns of testes anterior to the cirrus sac, and number of postvaginal testes. Five specimens that appear to represent a new species of Acanthobothroides were also collected. This species is figured and some details of the morphology are described, but the material was considered to be insufficient to allow for formal description of this species at this time. This is the first record of either of these genera of onchobothriid tapeworms from the Gulf of California.
机译：分别于1993年和1996年在墨西哥湾的加利福尼亚湾的6个地点对29条wh尾黄貂鱼的螺旋肠进行了检查，结果发现了4种新棘皮can：棘皮thr，棘皮si，棘皮索和棘皮thr 。这样一来，从东太平洋已知的棘皮thr属物种总数就达到了34种。据报道，西大西洋的弹科还报告了22种物种，全球范围内有100多个物种，种间比较的数量证明了新物种的合理性。物种相当笨拙。为了便于进行这些和将来的比较，并且在没有该属的系统发育假说的情况下，将这两个地理区域的56种棘孢杆菌属分类为4个字符：总长度（≤或> 15 mm），节段数（≤或> 50个细分），睾丸数量（≤或> 80）以及卵巢和口腔卵巢叶的对称性。这56个分类单元及其类别以表格形式显示。基于这些特征，A。bullardi，A。dasi和A. rajivi是2类物种（它们相对较小，具有很少的节段，相对较少的睾丸，并且表现出不对称的卵巢）。 soberoni是6类物种（它是一种相对较长的蠕虫，具有许多节段，但睾丸较少且卵巢不对称）。这4个物种在这4个特征的进一步细微之处以及钩的大小和相对长度，钩的囊大小，生殖孔的位置，在睾丸前的睾丸的列数方面，都与其他物种和其他地理区域的物种不同。囊和阴道后睾丸的数量。还收集了五个代表新棘皮动物物种的标本。对该物种进行了图示，并描述了一些形态学细节，但此时该材料不足以正式描述该物种。这是来自加利福尼亚湾的这两个按蚊属蠕虫属的第一个记录。

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    《Journal of Parasitology》 |2001年第2期|p.00000354-00000372|共19页
  • 作者

    Sohini Ghoshroy and J. N. Caira;

  • 作者单位

    Department of Ecology & Evolutionary Biology, University of Connecticut, 75 N. Eagleville Rd., Storrs, Connecticut 06269-3043;

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