Lang, Erik T.Peterson, Mark S. [AuthorE-mail: mark.peterson@usm.edu]Slack, William T. [Author...
18页
查看更多>>摘要：There are five coastal fundulid species in the northern Gulf of Mexico (nGOM) including Fundulus jenkinsi, which is recognized within all states from Louisiana through Florida and federally as a Species of Concern. This particular fundulid was listed because of a perceived linkage to salt marsh habitat, only scant data available on its ecology, and salt marsh habitat being altered throughout its range. Little is known about the life history of this coastal killifish, but a detailed diagnostic key of the early life stages of select members of Fundulidae can provide the foundation needed to accurately identify this rare species in need of conservation. Larval and postlarval stages of select members of the family Fundulidae along the east coast of the U. S. have been described and compared among species. We illustrated various stages of coastal Fundulus spp. and Adinia xenica in the northern GOM and quantified morphometric and meristic characters. Total length, head length, body depth, caudal peduncle width, snout length, eye diameter, anal and dorsal fin counts, and diagnostic pigment patterns were compared among species. The first branch of our dichotomous key utilized the number of branchiostegal rays to separate young fundulids (< 15 mm TL) into two groups that can then be identified by selected pigment patterns, morphometrics, and meristics.
Mitchell, Kirsty D.Hall, Kathryn A.Hooper, John N. A. .
16页
查看更多>>摘要：Sigmaxinella hipposiderus sp. nov. is described from morphological and molecular datasets, based on a single known specimen collected from the upper margin of a submarine canyon on the edge of the continental shelf, south-east of coastal Victoria (Tasman Sea), Australia. Morphologically, the species is clearly assigned to the genus Sigmaxinella, and preliminary molecular data (COI mt DNA) support the close relationship of this new species to other specimens attributed to Desmacellidae. This is the thirteenth species of Sigmaxinella and the seventh described for the Australian EEZ. Remarkably, 12 of the 13 known species are recorded predominantly from temperate or subantarctic Australian, New Zealand or South African waters, with only a single species described so far from the temperate Atlantic Ocean.
E-mail: franciscodeniz@yahoo.es]Martin, Javier [AuthorE-mail: javimarba@hotmail.com]Alonso, Maria R. [Author...
17页
查看更多>>摘要：Five new species of Napaeus are described, four from Gran Canaria and one from El Hierro (Canary Islands): Napaeus josei n. sp., N. venegueraensis n. sp., N. arinagaensis n. sp., N. validoi n. sp. and N. grohi n. sp. The main differences from the most similar species and data on distribution are presented. At least three of the new species disguise their shells with soil, presumably to avoid predation.
Anganthoibi, N. [AuthorE-mail: angannong@gmail.com]Vishwanath, W. [AuthorE-mail: wvnath@gmail.com]....
7页
查看更多>>摘要：Batasio convexirostrum, a new bagrid catfish, is described from the Koladyne drainage, Mizoram, India. It is distinguished from congeners by a combination of the following characters: body with a dark-brown oblique predorsal bar on a uniform light-brown background; very short dorsal to adipose distance (1.7-4.1% SL); snout length 39.2-45.5% head length; eye diameter 24.6-29.8% head length; gill rakers on the first branchial arch 4-5; pectoral spine length 14.6-17.6% standard length; adipose-fin base length 31.0-34.9% standard length; post-adipose distance 10.6-13.7% standard length; branched pectoral fin rays 9-10; and 39-40 vertebrae.
查看更多>>摘要：Microphysogobio wulonghensis sp. nov. is described based on 15 specimens collected from the Wulonghe River in Laiyang County of Shandong Province in eastern China. The new species can be distinguished from all congeners by the combination of the following characteristics: upper lip with one row of well-developed and compressed triangular papillae; two lateral pads of lower lip well-developed, contacting each other behind medial pad; two-thirds of area between pectoral-fin origin and pelvic-fin origin scaleless.
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