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1,148 results for “Western Indian Ocean”
Exploring the Pocillopora cryptic diversity: a new genetic lineage in the western Indian Ocean or remnants from an ancient one?
<p>Cryptic species and lineages have been widely reported during the last decades, particularly in the marine realm. Misidentifications and ignoring species complexes imply many consequences, notably biasing biodiversity and connectivity assessments, which in turn mislead our understanding of ecosystems and impact the effective design and management of conservation plans. Focusing on the Indo-Pacific coral genus <em>Pocillopora</em>, playing key roles in reef ecosystems as one of the main bio-constructors, we report the first <em>Pocillopora</em> PSH16 (ORF53; <em>sensu</em> Gélin et al. 2017, Mol Phylogenet Evol 109:430–446) colonies (<em>N</em> = 19) in the western Indian Ocean (Nosy Tanikely, Madagascar), 6,000 km further from its current distribution. Colonies were identified according to their mitochondrial Open Reading Frame (ORF) haplotype and Bayesian assignment tests based on 13-microsatellite genotypes. Additionally, we performed genetic structure and diversity analyses with sympatric colonies from other <em>Pocillopora</em> species and <em>Pocillopora</em> PSH16 colonies from the tropical southwestern Pacific, revealing (1) a weak clonal richness, (2) a weak genetic diversity and (3) a relative isolation for the newly reported PSH16 colonies. These colonies thus represent either a new, distinct and uncommon, genetic lineage, or isolated remnants of a wider one. In any case, unless specific management measures are implemented, their long-term maintenance seems compromised due to restricted gene flow within a restricted pool of genes.</p> <p> </p> <p>This dataset contains the microsatellite genotypes analysed (98 <em>Pocillopora</em> colonies × 13 loci + ORF). Missing data are encoded as "?". The sampling marine province and the population are indicated for each individual.</p>
FIG. 8 in Hanging on - lucinid bivalve survivors from the Paleocene and Eocene in the western Indian Ocean (Bivalvia: Lucinidae)
FIG. 8. — Monitilora Iredale, 1930, Palaeogene fossils (A-D) and Monitilora sepes (Barnard, 1964) Inhaca, Mozambique (E-Q): A, B, Monitilora duponti (Cossmann, 1908) Paleocene, Danian, Calcaire de Mons, Mons Puits Coppée, Belgium (RBINS I.G. 6544), L 17.5 mm; C, D, Monitilora obliqua baudoni (Deshayes, 1857) Eocene, Lutetian, Amblainville, Oise, France, Chavan collection (RBINS I.G. 21.735), L 18 mm; E, F, Monililora sepes exterior and interior of left valve, Inhaca stn MD11, L 15 mm; G, H, exterior and interior of right valve, Inhaca stn MD15, L 12.1 mm; I, J, exterior and interior of right valve, Inhaca stn MD15, L 10.2 mm; K, L, exterior and interior of right valve, Inhaca stn MD15, L 10.1 mm; M, interior of left valve, Inhaca stn MD15, L 8.4 mm; N, O, detail of hinge teeth of left and right valves of H, I; P, detail of external sculpture of K; Q, protoconch of H. Scale bars: N, O, 1.0 mm; P, 500 µm; Q, 100 µm.
FIG. 4 in Hanging on - lucinid bivalve survivors from the Paleocene and Eocene in the western Indian Ocean (Bivalvia: Lucinidae)
FIG. 4. — Barbierella louisensis (Viader, 1951): A-D, Lucina (Bellucina) louisensis Viader, 1951 syntypes (AMS C.305545), off Port Louis, Mauritius, L (A, B) 6.2 mm, (C) 5.5 mm, H (D) 5.4 mm. Images by A. C. Miller, Copyright: Australian Museum; E-G, Barbierella scitula Oliver & Abou-Zeid, 1986, holotype (NMW.Z.1982.68.1) exterior of right and interior of right and left valves (gold coated for SEM), off Ras Budran, Gulf of Suez, Red Sea, 30 m, L 8.2 mm, Images copyright NMW; H-K, Barbierella louisensis, Banc de la Zélée, Mozambique Channel, BENTHEDI stn 110, 24 m; H, I, exterior and interior of left valve, L 7.8 mm; J, K, interior and exterior of right valve, L 7.8 mm; L-W, Barbierella louisensis Inhaca, Mozambique, INHACA stn MD13, 50-53 m (MNHN); L, M, interior and exterior of right valve, L 6.0 mm; N, O, exterior and interior of left valve, L 5.9 mm; P, Q, interior and exterior of right valve, L 5.9 mm; R, exterior of right valve coated SEM im- age, L 6.5 mm; S, T, detail of hinge area of right and left valves; U, detail of lunule and dentition of right valve; V, detail of sculpture of R,; W, protoconch. Scale bars, S, T, 1 mm; U, V, 500 µm; W, 100 µm.
FIG. 6. — A-H, Retrolucina voorhoevei n in Hanging on - lucinid bivalve survivors from the Paleocene and Eocene in the western Indian Ocean (Bivalvia: Lucinidae)
FIG. 6. — A-H, Retrolucina voorhoevei n. comb. (Deshayes, 1857), Recent; and I-N, R. defrancei (Deshayes, 1857), Eocene; A-C, exterior of right and interiors of right and left valves, Mozambique (ANSP 234103), L 70 mm; D, E, exterior and interior of left valve, Mozambique (USNM 628930), L 78 mm; F, dorsal view (NHMUK 20170373), L 78 mm; G, H, details of hinge of right and left valves (NHMUK 20170373), scale bar, 10 mm; I, J, Retrolucina defrancei (Deshayes, 1857) exterior and interior of left valve Eocene, Lutetian, Chaumont-en-Vexin, Oise,France (MNHN.F.J07396), L 35 mm; K, L, Retrolucina defrancei (Deshayes,1857),Eocene, Lutetian, Chaussy, Seine et Oise, France, (RBINS IG10591), L 71 mm; M, N, Retrolucina defrancei (Deshayes, 1857), Eocene, Lutetian, Parnes, France, Deshayes collection (NHMUK 33283a), L 50.4 mm.
FIG. 2. — Gibbolucina zelee n in Hanging on - lucinid bivalve survivors from the Paleocene and Eocene in the western Indian Ocean (Bivalvia: Lucinidae)
FIG. 2. — Gibbolucina zelee n. sp., Banc de la Zélée, Mozambique Channel, BENTHEDI stn R110, 24 m: A-D, holotype (MNHN-IM-2000-33710) exterior and interior of left and right valves, L 15.3 mm; E, F, paratype (MNHN-IM-2000-33711) exterior and interior of left valve, L 12.7 mm; G, paratype (as E, F) interior of right valve with reconstituted body, L 12.7 mm; H-J, paratype (MNHN-IM-2000-33711) exterior of right valve and interior of right and left valves, L 17.7 mm; K, L, paratype (MNHN-IM-2000-33711) exterior of right valve and dorsal view, L 10.5 mm; M, N, paratype (MNHN-IM-2000-33711) exterior of left valve and dorsal view, L 9.2 mm; O, P, paratype (MNHN-IM-2000-33711) interior of right and left valves, L 8.9 mm; Q, R, paratype (MNHN-IM-2000-33711) detail of hinge teeth of right and left valves of O & P; S, protoconch of Q. Abbreviations: am, anterior adductor muscle; f, foot; ld, left demibranch; pa, posterior apertures; pm, posterior adductor muscle. Scale bars: Q, R, 1.0 mm; S, 100 µm.
FIG. 4 in First record of the rare Wide-mouth flounder Kamoharaia megastoma (Kamohara, 1936) (Pleuronectiformes, Bothidae) from the western Indian Ocean collected during the ATIMO VATAE expedition to Madagascar "Deep South"
FIG. 4. — Kamoharaia megastoma (Kamohara, 1936), SAIAB 189603, 108.7 mm SL, Madagascar: A, lateral line scale ocular side; B, body scale ocular side; C, body scale blind side. Scale bars: 200 µm.
FIG. 3 in First record of the rare Wide-mouth flounder Kamoharaia megastoma (Kamohara, 1936) (Pleuronectiformes, Bothidae) from the western Indian Ocean collected during the ATIMO VATAE expedition to Madagascar "Deep South"
FIG. 3. — Kamoharaia megastoma (Kamohara,1936), SAIAB 189603, 108.7 mm SL, Madagascar: A, close-up of ocular side of head; B, close-up of blind side of head; C, close-up of ocular side of mouth. Scale bars: A, B, 20 mm; C, not to scale.
FIG. 2 in First record of the rare Wide-mouth flounder Kamoharaia megastoma (Kamohara, 1936) (Pleuronectiformes, Bothidae) from the western Indian Ocean collected during the ATIMO VATAE expedition to Madagascar "Deep South"
FIG. 2. — Kamoharaia megastoma (Kamohara, 1936), SAIAB 189603, 108.7 mm SL, Sud-Ouest Pointe Barrow, Madagascar: A, ocular side fresh specimen (photograph by S. Ribes); B, ocular side preserved specimen; C, blind side preserved specimen. Scale bar: 20 mm.
Fig. 12 in New sibling species and new occurrences of squat lobsters (Crustacea, Decapoda) from the western Indian Ocean
Fig. 12. Dorsal view. Colours in life. A. Munida limula Macpherson & Baba, 1993, ♂, 3.4 mm, Madagascar, ATIMO VATAE, Stn TP12. B. Munida mesembria sp. nov., paratype, ♀, 6.5 mm, Mozambique, MAINBAZA, Stn CP3130. C. Munida micra sp. nov., holotype, ♂, 3.7 mm, Mozambique, MAINBAZA, Stn CC3165. D. Munida muscae Macpherson & de Saint Laurent, 2002, ♂, 3.2 mm, Madagascar, MIRIKY, Stn DW3179.
Fig. 11 in New sibling species and new occurrences of squat lobsters (Crustacea, Decapoda) from the western Indian Ocean
Fig. 11. Dorsal view. Colours in life. A. Munida africana Balss, 1913, ♀, 10.9 mm, Mozambique, MAINBAZA, Stn CP3141. B. Munida benguela de Saint-Laurent & Macpherson, 1988, ♂, 20.0 mm, Mozambique, MAINBAZA, Stn CP3138. C. Munida benguela de Saint-Laurent & Macpherson, 1988, ♀, 13.7 mm, Mozambique, MAINBAZA, Stn CP3135. D. Munida hoda sp. nov., paratype, ov. ♀, 11.4 mm, Mozambique, MAINBAZA, Stn CC3166.
Fig. 10 in New sibling species and new occurrences of squat lobsters (Crustacea, Decapoda) from the western Indian Ocean
Fig. 10. Munidopsis columbae sp. nov., holotype, ♂, 8.7 mm (MNHN-IU-2014-13472), Madagascar. A. Carapace and abdomen, dorsal view. B. Carapace and abdomen, lateral view. C. Sternal plastron, sternites 3 and 4. D. Cephalic region, showing antennular and antennal peduncles, ventral view. E. Right Mxp3, lateral view. F. Right P1, dorsal view. G. Right P2, lateral view. H. Right P3, lateral view. I. Right P4, lateral view. Scale bar: A–B, F–I = 2.0 mm; C–E = 1.0 mm.
Fig. 14 in New sibling species and new occurrences of squat lobsters (Crustacea, Decapoda) from the western Indian Ocean
Fig. 14. Dorsal view. Colours in life. A. Paramunida mozambica Cabezas et al., 2011, ♀, 6.0 mm, Mozambique, MAINBAZA, Stn CP3161. B. Bathymunida polae Balss, 1914, ♂, 3.8 mm, Mozambique, MAINBAZA, Stn DW3133. C. Munidopsis africana Balss, 1913, ♂, 7.4 mm, Mozambique, MAINBAZA, Stn CP3142. D. Eumunida minor de Saint Laurent & Macpherson, 1990, ♂, 5.3 mm, Mozambique, MAINBAZA, Stn DW3167.
Fig. 13 in New sibling species and new occurrences of squat lobsters (Crustacea, Decapoda) from the western Indian Ocean
Fig. 13. Dorsal view. Colours in life. A. Munida nesiotes Macpherson, 1999, ov. ♀, 8.5 mm, Mozambique, MAINBAZA, Stn CP3143. B. Munida shaula Macpherson & de Saint Laurent, 2002, ov. ♀, 12.4 mm, Mozambique, MAINBAZA, Stn CC3151. C. Munida tetracantha sp. nov., paratype, ♂, 7.4 mm, Mozambique, MAINBAZA, Stn CP3131. D. Paramunida marionis Cabezas et al., 2011, ♀, 6.0 mm, Mozambique, MAINBAZA, Stn CP3143.
Fig. 2 in New sibling species and new occurrences of squat lobsters (Crustacea, Decapoda) from the western Indian Ocean
Fig. 2. Munida austrina sp. nov., holotype, ♀, 4.6 mm (MNHN-IU-2014-13478), Mozambique. A. Carapace and abdomen, dorsal view. B. Sternal plastron. C. Cephalic region, showing antennular and antennal peduncles, ventral view. D. Right Mxp3, lateral view. E. Right P1, dorsal view. F. Right P2, lateral view. G. Dactylus of right P2, lateral view. H. Right P3, lateral view. I. Right P4, lateral view. Scale bar: A, E–F, H–I = 1.0 mm; B–D, G = 0.5 mm.
Fig. 1 in New sibling species and new occurrences of squat lobsters (Crustacea, Decapoda) from the western Indian Ocean
Fig. 1. Eumunida spiridonovi sp. nov., holotype, ♀, 11.0 mm (MNHN-IU-2016-8715), East of Somalia. A. Carapace, dorsal view. B. Abdomen, dorsal view. C. Sternal plastron, sternites 3 and 4. D. Left antenna and antennula, ventral view. E. Right Mxp3. F. Right P1 merus, dorsal view. G. Right P1 carpus and distal part of merus, ventral view. H. Right P1 palm and fingers, dorsal view. I. Right P1 distal part of palm and fingers, ventral view. J. Right P2. Scale bar: A–C, G, I–J = 2.0 mm; D–E = 1 m; F, H = 0.5 mm.
Fig. 7 in New sibling species and new occurrences of squat lobsters (Crustacea, Decapoda) from the western Indian Ocean
Fig. 7. Munida micra sp. nov., holotype, ♂, 3.7 mm (MNHN-IU-2008-10229), Mozambique. A. Carapace and abdomen, dorsal view. B. Sternal plastron. C. Cephalic region, showing antennular and antennal peduncles, ventral view. D. Right Mxp3, lateral view. E. Left P1, dorsal view. F. Left P2, lateral view. G. Dactylus of left P2, lateral view. H. Left P3, lateral view. I. Right P4, lateral view. Scale bar: A–B, E–F, H–I = 1.0 mm; C–D, G = 0.5 mm.
Fig. 3 in New sibling species and new occurrences of squat lobsters (Crustacea, Decapoda) from the western Indian Ocean
Fig. 3. Munida cristulata sp. nov., holotype, ♂, 6.1 mm (MNHN-IU-2014-13480), Glorieuses Islands, N of Mayotte Island. A. Carapace and abdomen, dorsal view. B. Sternal plastron. C. Cephalic region, showing antennular and antennal peduncles, ventral view. D. Right Mxp3, lateral view. E. Right P1, dorsal view. F. Right P2, lateral view. G. Right P3, lateral view. H. Right P4, lateral view. Scale bar: A–B, E–H = 1.0 mm; C–D = 0.5 mm.
Fig. 6 in New sibling species and new occurrences of squat lobsters (Crustacea, Decapoda) from the western Indian Ocean
Fig. 6. Munida mesembria sp. nov., holotype, ♂, 7.7 mm (MNHN-IU-2014-13477), Mozambique. A. Carapace and abdomen, dorsal view. B. Sternal plastron. C. Cephalic region, showing antennular and antennal peduncles, ventral view. D. Right Mxp3, lateral view. E. Right P1, dorsal view. F. Right P2, lateral view. G. Dactylus of right P2, lateral view. H. Left P3, lateral view. I. Right P4, lateral view. Scale bar: A, E–F, H–I = 2.0 mm; B–D, G = 1.0 mm.
Fig. 9 in New sibling species and new occurrences of squat lobsters (Crustacea, Decapoda) from the western Indian Ocean
Fig. 9. Munida tetracantha sp. nov., holotype, ♂, 6.6 mm (MNHN-IU-2014-13474), Madagascar. A. Carapace and abdomen, dorsal view. B. Sternal plastron. C. Cephalic region, showing antennular and antennal peduncles, ventral view. D. Right Mxp3, lateral view. E. Right P1, dorsal view. F. Right P2, lateral view. G. Dactylus of right P2, lateral view. H. Right P4, lateral view. Scale bar: A, E–F, H = 2.0 mm; B–D, G = 1.0 mm.
Fig. 13 in The species of Moloha Barnard, 1946, from the western Indian Ocean, with the description of a new species from India (Crustacea: Brachyura: Homolidae)
Fig. 13. Moloha tumida sp. nov. Holotype, ♂ (cl 55.7 mm, cw 50.6 mm) (DABFUK), Kerala, India. A. Right third maxilliped. B–D. Left P2–P4, respectively. E–H. Right P2–P5, respectively. I. Right P5 subchelate dactylus and propodus. Scale bars = 10 mm.
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