DIRK NEUMANNMELANIE L. J. STIASSNYULRICH K. SCHLIEWEN
20页
查看更多>>摘要：Morphometric differentiation among 25 populations of the widespread Sarotherodon galilaeus species complex is investigated, and two new species are described from Lake Ejagham, Cameroon in west-central Africa. Sarotherodon lamprechti sp. nov. is characterized by a prognathous lower jaw, scales over the pectoral fin-base restricted at maximum to the basal third, and an elongate ventral keel on the lower pharyngeal jaw. Sarotherodon knauerae sp. nov. is characterized by the possession of an inflated second pharyngobranchial element of the upper pharyngeal jaw, and small size at maturation. It is further differentiated from its sympatric congener in having a shorter anal fm (12.0-14.6 % SL vs. 14.1-15.7 % SL), larger eyes (24.0-31.2 % HL vs. 20.4-29.2% HL), higher total gill raker count (24-30 vs. 20-25), and a terminal mouth. Molecular evidence for a sister group relationship for these two sympatric specips is corroborated by the shared possession of a reduced number of teeth on the second pharyngobranchial element of the upper pharyngeal jaw.
DIRK NEUMANNMELANIE L. J. STIASSNYULRICH K. SCHLIEWEN
20页
查看更多>>摘要：Morphometric differentiation among 25 populations of the widespread Sarotherodon galilaeus species complex is investigated, and two new species are described from Lake Ejagham, Cameroon in west-central Africa. Sarotherodon lamprechti sp. nov. is characterized by a prognathous lower jaw, scales over the pectoral fin-base restricted at maximum to the basal third, and an elongate ventral keel on the lower pharyngeal jaw. Sarotherodon knauerae sp. nov. is characterized by the possession of an inflated second pharyngobranchial element of the upper pharyngeal jaw, and small size at maturation. It is further differentiated from its sympatric congener in having a shorter anal fm (12.0-14.6 % SL vs. 14.1-15.7 % SL), larger eyes (24.0-31.2 % HL vs. 20.4-29.2% HL), higher total gill raker count (24-30 vs. 20-25), and a terminal mouth. Molecular evidence for a sister group relationship for these two sympatric specips is corroborated by the shared possession of a reduced number of teeth on the second pharyngobranchial element of the upper pharyngeal jaw.
查看更多>>摘要：A new species of gecko, Hemidactylus graniticolus sp. nov. is described from Kamataka state, south India. This large-sized (SVL to at least 110.6 mm), rupicolous gecko differs from congeners in having 16-18 longitudinal rows of fairly regularly arranged, subtrihedral, weakly keeled, striated tubercles at midbody; 9-11 and 12-13 subdigital lamellae on the first and fourth digits, respectively, of both manus and pes; tail with transverse series of four enlarged tubercles on each tail segment; 23-28 femoral pores on each side separated by 1-3 poreless scales; 12-14 supralabials and 9-11 infralabials. Molecular data support the distinctiveness of the new species and its affinities with large-bodied, tuberculate Hemidactylus spp. from India and Sri Lanka.
查看更多>>摘要：A new species of gecko, Hemidactylus graniticolus sp. nov. is described from Kamataka state, south India. This large-sized (SVL to at least 110.6 mm), rupicolous gecko differs from congeners in having 16-18 longitudinal rows of fairly regularly arranged, subtrihedral, weakly keeled, striated tubercles at midbody; 9-11 and 12-13 subdigital lamellae on the first and fourth digits, respectively, of both manus and pes; tail with transverse series of four enlarged tubercles on each tail segment; 23-28 femoral pores on each side separated by 1-3 poreless scales; 12-14 supralabials and 9-11 infralabials. Molecular data support the distinctiveness of the new species and its affinities with large-bodied, tuberculate Hemidactylus spp. from India and Sri Lanka.
查看更多>>摘要：The Neotropical genus Benthana Budde-Lund, 1908 includes 22 species, three of them allocated to the subgenus Benth-anoscia Lemos de Castro, 1958. A new species is described from the state of Parana, Brazil. This new species is distinguished from its congeners by having 8+2 aesthetascs on the antennula, the first article of the antennal flagellum unpigmented, the proximal inner tooth of the inner pectinate set of the maxillula with 7 denticles, and the pleopod 1 exo-pod with a dentiform protmsion witha concave appearance.
查看更多>>摘要：The Neotropical genus Benthana Budde-Lund, 1908 includes 22 species, three of them allocated to the subgenus Benth-anoscia Lemos de Castro, 1958. A new species is described from the state of Parana, Brazil. This new species is distinguished from its congeners by having 8+2 aesthetascs on the antennula, the first article of the antennal flagellum unpigmented, the proximal inner tooth of the inner pectinate set of the maxillula with 7 denticles, and the pleopod 1 exo-pod with a dentiform protmsion witha concave appearance.
CHRISTOPHER C. AUSTINGEORGE R. ZUGALISON M. HAMILTON
11页
查看更多>>摘要：The first published report of a large treeskink from Rarotonga, Cook Islands, appeared in 1988. The first museum voucher specimen was collected in 1984. Although this skink seems likely to be a recent arrival to the island of Rarotonga, it representsa unique member of the Emoia samoensis species group. We compare this population with other members of the E. samoensis group and describe the population as Emoia tuitarere n. sp., distinguished by a suite of extemal characters including SVL, number of dorsal scale rows, and number of subdigital lamellae of the fourth toe. We provide preliminary definitions for the concolor and san\oensis species subgroups proposed by Brown (1991), although current molecular data do not support their monophyly (Hamiltonet al, 2010).
CHRISTOPHER C. AUSTINGEORGE R. ZUGALISON M. HAMILTON
11页
查看更多>>摘要：The first published report of a large treeskink from Rarotonga, Cook Islands, appeared in 1988. The first museum voucher specimen was collected in 1984. Although this skink seems likely to be a recent arrival to the island of Rarotonga, it representsa unique member of the Emoia samoensis species group. We compare this population with other members of the E. samoensis group and describe the population as Emoia tuitarere n. sp., distinguished by a suite of extemal characters including SVL, number of dorsal scale rows, and number of subdigital lamellae of the fourth toe. We provide preliminary definitions for the concolor and san\oensis species subgroups proposed by Brown (1991), although current molecular data do not support their monophyly (Hamiltonet al, 2010).
查看更多>>摘要：It's an old question in biology: what is a species? Many different answers have been given over the years, and there are indefinitely many "definitions" in the literature. Adding to R. L. Mayden's list of 22 definitions (Mayden, 1997) , I counted 26 in play since the Modern Synthesis (2009a), and a new one, which I call the "polyphasic" concept (basically a consilience of many lines of morphological, ecological, genetic, and physiological evidence), has been implicitly extended from bacterial and other microbial contexts to macrobial species, although the terminology has not yet been transplanted (Colwell, 1970; Vandamme et al, 1996). However, on another count there are seven "basic" species concepts: agamospecies (asexuals), biospecies (reproductively isolated sexual species), ecospecies (ecological niche occupiers), evolutionary species (evolving lineages), genetic species (common gene pool), morphospecies (species defined by their form, or phenotypes), and taxonomic species (whatever a taxonomist calls a species).
查看更多>>摘要：It's an old question in biology: what is a species? Many different answers have been given over the years, and there are indefinitely many "definitions" in the literature. Adding to R. L. Mayden's list of 22 definitions (Mayden, 1997) , I counted 26 in play since the Modern Synthesis (2009a), and a new one, which I call the "polyphasic" concept (basically a consilience of many lines of morphological, ecological, genetic, and physiological evidence), has been implicitly extended from bacterial and other microbial contexts to macrobial species, although the terminology has not yet been transplanted (Colwell, 1970; Vandamme et al, 1996). However, on another count there are seven "basic" species concepts: agamospecies (asexuals), biospecies (reproductively isolated sexual species), ecospecies (ecological niche occupiers), evolutionary species (evolving lineages), genetic species (common gene pool), morphospecies (species defined by their form, or phenotypes), and taxonomic species (whatever a taxonomist calls a species).
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