First Records of a Hydrolagus Species (Holocephali: Chimaeridae) from Reunion Island and Mayotte (Southwestern Indian Ocean)
Abstract
:1. Introduction
2. Materials and Methods
3. Results
3.1. Description of the Specimens
3.2. Species Comparisons
3.2.1. Comparison with H. affinis
3.2.2. Comparison with H. erithacus
3.2.3. Comparison with H. melanophasma
3.2.4. Comparison with H. homonycteris
4. Discussion
5. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Species | Authors | English Name | Distribution | Depth Range | TL | BDL | Red List |
---|---|---|---|---|---|---|---|
Chimaera monstrosa | [1] | Rabbitfish | Eastern North Atlantic: Iceland to Morocco | 50–1742 m | 119 cm | 59 cm | VU |
Chimaera ogilbyi (=lemures) | [14] | Ogilbys ghost shark | Indo-Australia: Australia, Indonesia, New Guinea | 120–872 m | 103 cm | 55 cm | NT |
Chimaera phantasma | [15] | Silver chimaera | Western Pacific: Japan to Philippines | 20–962 m | 110 cm | VU | |
Chimaera jordani | [16] | Jordan’s chimaera | NW Pacific: Japan | 716–780 m | 93 cm | DD | |
Chimaera owstoni | [16] | Owston’s chimaera | NW Pacific: Japan | 650–900 m | 80 cm | DD | |
Chimaera cubana | [17] | Chimaera | WC Atlantic: Cuba | 180–1050 m | 80 cm | LC | |
Chimaera panthera | [18] | Leopard chimaera | SW Pacific: New Zealand | 327–1020 m | 129 cm | LC | |
Chimaera lignaria | [2] | Giant chimaera | Southern Pacific: New Zealand + Tasmania | 400–1800 m | 142 cm | LC | |
Chimaera argiloba | [19] | Whitefin chimaera | Eastern Indian Ocean: Western Australia | 370–520 m | 91 cm | LC | |
Chimaera fulva | [20] | Southern chimaera | Southern Australia | 780–1095 m | 118 cm | LC | |
Chimaera macrospina | [20] | Longspine chimaera | Indo-West Pacific: Australia east and west | 435–1190 m | 103 cm LL | LC | |
Chimaera obscura | [20] | Shortspine chimaera | SW Pacific: eastern Australia | 450–1080 m | 95 cm | LC | |
Chimaera bahamaensis | [8] | Bahamas ghost shark | North Atlantic: Bahamas | 732–1506 m | 88 cm | LC | |
Chimaera notafricana | [7] | Cape chimaera | Southern Atlantic: Namibia, South Africa | 680–1000 m | 93 cm | LC | |
Chimaera opalescens | [21] | Opal chimaera | NE Atlantic | 800–1975 m | 110 cm | DD | |
Chimaera carophila | [22] | Brown chimaera | SW Pacific: New Zealand | 846–1350 m | 104 cm | 60 cm | LC |
Chimaera orientalis | [23] | Eastern Pacific black chimaera | Eastern Pacific: Costa Rica, Peru | 560–1138 m | 86 cm | 50 cm | DD |
Chimaera buccanigella | [24] | Dark-mouth chimaera | SW Indian Ocean Ridge | 495–960 m | 86 cm | DD | |
Chimaera didierae | [24] | Falkor chimaera | SW Indian Ocean: Walters Shoal | 1000–1100 m | 155 cm | DD | |
Chimaera willwatchi | [24] | Seafarer’s ghost shark | SW Indian Ocean: Madagascar Ridge | 89–1375 m | 97 cm | DD | |
Chimaera compacta | [25] | Stubby chimaera | Southern Indian Ocean: Amsterdam | 595–655 m | 84 cm | ||
Hydrolagus colliei | [26] | White spotted chimaera | NE Pacific: Alaska to Costa Rica | 0–1029 m | 60 cm | LC | |
Hydrolagus affinis | [27] | Small-eyed rabbitfish | NE + NW Atlantic + WIO (South Africa) | 300–3000 m | 147 cm | 96 cm | LC |
Hydrolagus mirabilis | [28] | Large-eyed rabbitfish | EN Atlantic to Morocco + WN Atlantic | 450–2058 m | 80 cm | 35 cm | LC |
Hydrolagus mitsukurii | [29] | Spookfish / Mitsukuri’s chimaera | NW Pacific: Japan, Philippines, New Guinea | 325–830 m | 79 cm | 37 cm | NT |
Hydrolagus purpurescens | [30] | Purple chimaera | Pacific: Japan, Hawaii; Sakhalin | 920–1951 m | 138 cm + | LC | |
Hydrolagus barbouri | [31] | Ninepsoy chimaera | NW Pacific: Japan, China | 250–1100 m | 86 cm | 48 cm | DD |
Hydrolagus novaezealandiae | [32] | Dark ghost shark | SW Pacific: New Zealand | 25–950 m | 96 cm | LC | |
Hydrolagus deani (? = H. misukurii) | [33] | Philippine chimaera | WC Pacific: Philippines | 469–770 m | 73 cm | ||
Hydrolagus africanus | [34] | African chimaera | W Indian Ocean | 303–1470 | 98 cm | 46 cm | LC |
Hydrolagus alberti | [35] | Gulf chimaera | Western Atlantic: Gulf Mexico + Caribbean | 348–1470 m | 100 cm | 45 cm | LC |
Hydrolagus macrophthalmus | [36] | Bigeye chimaera | Eastern Pacific: Mexico to Chile | 590–1160 m | 64 cm | 35 cm | LC |
Hydrolagus pallidus | [37] | Pale chimaera | North Atlantic: Iceland to Newfoundland | 883–2619 m | 138 cm | 91 cm | LC |
Hydrolagus bemisi | [2] | Pale ghost shark | SW Pacific: New Zealand | 400–1100 m | 112 cm | 57 cm | LC |
Hydrolagus trolli | [4] | Pointy-nosed blue chimaera | Western Pacific: New Caledonia, New Zealand | 612–2000 m | 120 cm | 79 cm | LC |
Hydrolagus matallanasi | [38] | Striped rabbitfish | SW Atlantic: Brazil | 416–73 m | 70 cm | 31 cm | VU |
Hydrolagus lusitanicus | [39] | Portuguese rabbitfish / coelho | NE Atlantic: Portugal | 1600–2410 m | 118 cm PCL | LC | |
Hydrolagus alphus | [40] | Whitespot ghost shark | EC Pacific: Galapagos | 630–907 m | >48 cm | >25 cm | LC |
Hydrolagus mccoskeri | [41] | Galápagos ghost shark | EC Pacific: Galapagos | 396–606 m | 38 cm | 37 cm | LC |
Hydrolagus homonycteris | [42] | Black ghost shark | Southern Ocean: Australia, Tasmania + New Zealand | 400–1450 m | 109 cm | 66 cm | LC |
Hydrolagus marmoratus | [42] | Marbled ghost shark | Western Pacific: eastern Australia | 548–995 m | 80 cm | LC | |
Hydrolagus melanophasma | [43] | Eastern Pacific black ghost shark | Eastern Pacific: California to Chile | 30–1800 m | 128 cm | 92 cm | LC |
Hydrolagus erithacus | [11] | Robin’s ghost shark | SE Atlantic and SW Indian Oceans | 470–1000 m | 144 cm | 91 cm | DD |
MNHN 2015-0097 Mayotte Male ad. 710 mm BDL | MNHN 2015-0098 La Reunion Female ad. 870 mm BDL | H. africanus 65 Specimens 221–465 mm BDL [47] | H. erithacus 9 Types 765–945 mm BDL [11] | H. melanophasma 2 Types + 6 Specimens 577–918 mm BDL Data from the Literature (cf Legend) | H. homonycteris 12 Types 235–630 mm BDL [42] | ||
---|---|---|---|---|---|---|---|
TL | total length | 157.7 | 149.4 | 117.2–293.8 | 151–163 | 138.9–160.5 | 140–202 |
PCL | precaudal length | 125.4 | 124.1 | 116.1–130.0 | 121–132 | 121.8–130.6 | 120–136 |
BDL | body length | 100% | 100% | 100% | 100% | 100% | 100% |
SVL | snout–vent length | 60.6 | 72.4 | 51.9–77.9 | 62–70 | 56.1–73.1 | 53–71 |
TRL | trunk length | 35.9 | 48.3 | 30.9–46.8 | 35–44 | 31.9–39.7 | 33–42 |
PD2 | pre-D2 length | 47.2 | 50.0 | 41.1–57.7 | 53–57 | 41.7–53.4 | 42–60 |
PD1 | pre-D1 length | 27.3 | 34.5 | 20.3–33.9 | 28–35 | 25.9–29.1 | 24–40 |
POB | preorbital length | 11.1 | 15.5 | 8.5–15.0 | 15–18 | 8.4–14.2 | 11–20 |
POR | preoral length | 8.0 | 14.6 | 5–15 | 8.3–11.5 | ||
PRN | prenarial length | 7.8 | 12.1 | 4–12 | 6.4–12.1 | ||
D2B | D2 base length | 84.5 | 74.7 | 69.6–86.7 | 71–81 | 77.3–82.2 | 74–82 |
D2AH | maxi height at ant. 1/3 D2 | 3.9 | 4.4 | 4.3–7.5 | 3–5 | 4.0–5.2 | 4–8 |
D2PH | maxi height at post. 1/3 D2 | 4.6 | 4.6 | 3.4–6.5 | 3–5 | 4.2–7 | |
D1B | D1 base length | 21.5 | 19.9 | 9.0–18.9 | 12–16 | 13.9–20.0 | 9–18 |
DSA | ant. spine to D1 | 18.6–28.3 | 21–25 | 17.6–29.9 | 9–25 | ||
D1H | max. height D1 | 19.0 | 17.6 | 11.8–20.5 | 11–15 | 18.1–26.3 | 14–17 |
CDM | dorsal caudal margin length | 20.1 | 19.5 | 16.0–25.6 | 21–25 | 18.5–23.1 | 16–24 |
CDH | max. height caudal dorsal lobe | 3.2 | 3.5 | 2.3–5.0 | 3–5 | 2.0–3.3 | 3–4 |
CTL | total caudal length | 31.7 | 28.2 | 33.8-xx | 25–32 | 25.3–34.5 | 34–79 |
CVM | ventral caudal margin length | 23.1 | 33.3 | 22.8–44.1 | 30–36 | 24.4–43.6 | 26–34 |
CVH | max. height caudal ventral lobe | 2.9 | 3.0 | 2.0–5.0 | 3–4 | 2.0–2.9 | 3–4 |
HDL | head length | 24.5 | 28.4 | 17.9–31.3 | 27–31 | 21.8–30.6 | 21–34 |
P1A | pectoral ant. margin length | 35.2 | 34.5 | 29.3–41.4 | 29–42 | 32.0–41.5 | 32–40 |
P2A | pelvic ant. margin length | 19.0 | 19.8 | 16.3–23.5 | 18–22 | 17.8–21.0 | 13–18 |
IDS | interdorsal space | 2.3 | 0.0 | 2.1–12.6 | 8–12 | 2.6–10.6 | 3–14 |
DCS | dorsal–caudal space | 0.0 | 0.0 | 0.0–1.3 | 1–3 | 2–3 | |
D1P1 | ant. D1 to ant. pectoral base | 24.2 | 20.0 | 14.4–21.9 | 19–28 | 16.4–22.4 | 16–20 |
D1P2 | ant. D1 to ant. pelvic base | 45.1 | 39.1 | 25.6–44.0 | 43–49 | 27.2–43.9 | 37–43 |
EYL | eye length | 6.1 | 6.0 | 5.1–9.7 | 5–7 | 5.0–7.1 | 5–7 |
EYH | eye height | 4.1 | 4.0 | 2.9–5.9 | 3–5 | 3.7–4.8 | 4–6 |
CLT | clasper length from pelvic base | 13.4 | 0.0 | 3.8–14.2 | 19–20 | 13.7–15.0 | 11 |
CLM | clasper medial branch from fork to tip | 5.1 | 0.0 | 4.5–7.7 | 3–4 | 3.8–4.0 | 3 |
CLL | clasper lateral branch from fork to tip | 4.0 | 0.0 | 4.3–7.2 | 3–4 | 3.9–4.2 | 3 |
% HDL | % HDL | % HDL calcul. | % HDL | ||||
ONC | oronasal fold to centre of nasal canal | 8.4 | 8.9 | 10.0–13.3 | 8.2–12.5 | ||
LRC | rostral canal length | 3.7 | 3.9 | 3.3–10.0 | 3.8–6.5 | ||
LNC | straight nasal canal length | 24.1 | 21.5 | 10.0–23.3 | 23.6–31.5 | ||
IOA | infraorbital to oro-angular junction | 15.1 | 15.1 | 3.3–13.3 | 12.9–16.1 | ||
OTM | preopercular to infraorbital distance | 29.2 | 32.4 | 26.7–36.7 | 28.1–32.9 | ||
OCL | infraorbital to postorbital distance | 15.2 | 13.8 | 13.3–20.0 | 11.1–14.0 | ||
STL | supratemporal to postorbital distance | 15.7 | 15.3 | 16.7–26.7 | 14.5–27.0 | ||
SPS | spine to supratemporal distance | 19.9 | 21.0 | 13.3–30.0 | 14.9–18.2 |
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Séret, B.; Quod, J.-P. First Records of a Hydrolagus Species (Holocephali: Chimaeridae) from Reunion Island and Mayotte (Southwestern Indian Ocean). Fishes 2023, 8, 522. https://doi.org/10.3390/fishes8100522
Séret B, Quod J-P. First Records of a Hydrolagus Species (Holocephali: Chimaeridae) from Reunion Island and Mayotte (Southwestern Indian Ocean). Fishes. 2023; 8(10):522. https://doi.org/10.3390/fishes8100522
Chicago/Turabian StyleSéret, Bernard, and Jean-Pascal Quod. 2023. "First Records of a Hydrolagus Species (Holocephali: Chimaeridae) from Reunion Island and Mayotte (Southwestern Indian Ocean)" Fishes 8, no. 10: 522. https://doi.org/10.3390/fishes8100522