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Environmental Biology of Fishes

, Volume 100, Issue 7, pp 785–795 | Cite as

Aspects of the reproductive biology of the data-deficient Mustelus minicanis and M. norrisi (Chondrichthyes: Triakidae) in the southern Caribbean Sea

  • Alejandro Tagliafico
  • Néstor Rago
  • Salomé Rangel
  • Matt K. Broadhurst
Article

Abstract

Reproduction and maturation in the economically important, but data-deficient, Mustelus minicanis and M. norrisi were analysed using catches of populations exploited by a gillnet fishery during two years in the southern Caribbean Sea. In total, 691 female (mean ± SD total length–TL of 55.3 ± 5.8 cm) and 503 male (50.4 ± 4.9 cm TL) M. minicanis were assessed, with ~95% of all specimens deemed mature. Almost 25% of females were gravid (occurring between January and October) and with variable temporal development of up to six embryos (3.3 ± 1.2), implying protracted temporal parturition. Parity in the sex ratio of embryos, but not in landed catches, suggested sexual segregation across the fished area. The 50% sizes at maturity (M 50) (± SE) were similarly estimated at 45.11 (± 0.39) and 45.48 (± 0.42) cm TL for females and males, respectively. Relatively fewer (235) M. norrisi were landed, with samples comprising 150 females (82.6 ± 18.1 cm TL) and 85 males (75.5 ± 17.7 cm TL). More than 30% of both sexes were immature. Ten percent of females were gravid (up to 11 embryos) and present in catches between October and February, coinciding with the northern hemisphere autumn/winter. Female and male M 50s were 76.65 (± 1.16) and 69.63 (± 1.92) cm TL, respectively. The results imply variable inter-specific reproductive plasticity and the need for further life-history studies. Increasing gillnet selectivity might represent a simple precautionary management option for concurrently regulating catches of the smaller-bodied M. minicanis during peak abundances of gravid females and similar-sized juvenile M. norrisi.

Keywords

Artisanal fishery Dwarf smooth-hound Elasmobranchs Ground shark Hound-sharks Narrow-fin smooth-hound 

Notes

Acknowledgements

We thank the fishers and fish retailers from La Pared, Juan Griego, Los Cocos and Conejeros for their kind cooperation in allowing us to measure the specimens. We also acknowledge the Instituto Nacional de Investigaciones Agrícolas (INIA) and A. Lárez for helpful logistical assistance. M. Barany, L. Zambrano, N. Ehemann and M. Harris provided further assistance in taxonomical identification of the specimens. E. Ron is thanked for receiving the specimens at the ichthyology collection of the Universidad de Oriente. Anonymous reviewers greatly improved the manuscript.

References

  1. Acosta AR, Appeldoorn RS (1995) Catching efficiency and selectivity of gillnets and trammel nets in coral reefs from southwestern Puerto Rico. Fish Res 22:175–196CrossRefGoogle Scholar
  2. Boomer JJ, Harcourt RG, Malcolm PF, Stow AJ (2012) Genetic divergence, speciation and biogeography of Mustelus (sharks) in the central indo-Pacific and Australasia. Mol Phylogenet Evol 64:697–703CrossRefPubMedGoogle Scholar
  3. Carlson J, Cortés E (2003) Gillnet selectivity of small coastal sharks off the southeastern United States. Fish Res 60:405–414CrossRefGoogle Scholar
  4. Cervigón F (1966) Los peces marinos de Venezuela, vol 1. Fundación La Salle de Ciencias Naturales, CaracasGoogle Scholar
  5. Cervigón F, Alcalá A (1999) Los peces marinos de Venezuela: Tiburones y rayas, vol 5. Fundación Museo del Mar, CaracasGoogle Scholar
  6. Compagno LJV (1984) FAO species catalogue. Vol. 4. Sharks of the world. An annotated and illustrated catalogue of shark species known to date. Part 1, Hexanchiformes to Lamniformes. Part 2, Carcharhiniformes, FAO fish. Synop 125Google Scholar
  7. Conrath C (2004) Reproductive biology. In: Musick J, Bonfill R (eds) elasmobranch fisheries management techniques. APEC secretariat, pp. 133–164Google Scholar
  8. Conrath CL, Musick JA (2002) Reproductive biology of the smooth dogfish, Mustelus canis, in the Northwest Atlantic Ocean. Env Biol Fish 64:367–377CrossRefGoogle Scholar
  9. Cortés E (1998) Demographic analysis as an aid in shark stock assessment and management. Fish Res 39:199–208CrossRefGoogle Scholar
  10. Cortés F, Jaureguizar AJ, Menni RC, Guerrero RA (2011) Ontogenetic habitat preferences of the narrownose smooth-hound shark, Mustelus schmitti, in two southwestern Atlantic coastal areas. Hydrobiologia 661:445–456CrossRefGoogle Scholar
  11. Daly-Engel TS, Seraphin KD, Holland KN, Coffey JP, Nance HA, Toonen RJ, Bowen BW (2012) Global phylogeography with mixed-marker analysis reveals male-mediated dispersal in the endangered scalloped hammerhead shark (Sphyrna lewini). PLoS One 7:e29986CrossRefPubMedPubMedCentralGoogle Scholar
  12. Davis B, Worm B (2013) The international plan of action for sharks: how does national implementation measure up? Mar Pol 38:312–320CrossRefGoogle Scholar
  13. Dulvy NK et al (2014) Extinction risk and conservation of the world’s sharks and rays. elife 3:e00590CrossRefPubMedPubMedCentralGoogle Scholar
  14. Francis M (1988) Movement patterns of rig (Mustelus lenticulatus) tagged in southern New Zealand. NZ J Mar Freshw Res 22:259–272CrossRefGoogle Scholar
  15. Francis MP (2003) Mustelus lenticulatus. The IUCN red list of threatened species 2016-2 http://www.iucnredlist.org. Accessed 9 Sept 2016
  16. Giresi MM, Grubbs RD, Portnoy DS, Gold JR (2013) A morphological key to distinguish among smoothhound sharks (genus Mustelus) in the Gulf of Mexico. Proc Gulf Caribb Fish Inst 65:143–146Google Scholar
  17. Giresi MM, Grubbs RD, Portnoy DS, Driggers WB, Jones L, Gold JR (2015) Identification and distribution of morphologically conserved smoothhound sharks in the northern Gulf of Mexico. Trans Am Fish Soc 144:1301–1310CrossRefGoogle Scholar
  18. Heemstra PC (1997) Review of the smooth-hound sharks genus Mustelus, family Triakidae of the western Atlantic Ocean, with descriptions of two new species and a new sub-species. Bull Mar Sc 60:894–928Google Scholar
  19. Hozbor N, Vooren CM, Lamónaca AF (2004) Mustelus fasciatus. The IUCN red list of threatened species 2004: e.T44581A10908329. Accessed 9 Sept 2016Google Scholar
  20. IUCN (2016) Mustelus. The IUCN red list of threatened species. Version 2016-2. <www.iucnredlist.org>. Accessed 9 Sept 2016
  21. Jensen JW (1995) A direct estimate of gillnet selectivity for brown trout. J Fish Biol 46:857–861CrossRefGoogle Scholar
  22. Jones LM, Kyne PM, Carlisle AB (2009) The IUCN red list of threatened species 2009-2: e.T161518A5441575. Accessed 17 Nov 2016Google Scholar
  23. Kirkwood GP, Walker TI (1986) Gill net mesh selectivities for gummy shark, Mustelus antarcticus Günther, taken in south-eastern Australian waters. Mar Freshw Res 37:689–697CrossRefGoogle Scholar
  24. Leandro L, Caldas JP (2006) Mustelus minicanis. The IUCN red list of threatened species 2016-2: e.T60205A12318893. Accessed 9 Sept 2016Google Scholar
  25. Massa A, Hozbor N, Chiaramonte GE, Balestra AD, Vooren CM (2006) Mustelus schmitti. The IUCN red list of threatened species 2016-2. E.T60203A12318268. Accessed 9 Sept 2016Google Scholar
  26. McAuley RB (2011) Mustelus ravidus. The IUCN red list of threatened species 2011: e.T63165A12625425. Accessed 9 Sept 2016Google Scholar
  27. Mendonça FF, Oliveira C, Gadig OBF, Foresti F (2011) Phylogeography and genetic population structure of Caribbean sharpnose shark Rhizoprionodon porosus. Rev Fish Biol Fisheries 21:799–814CrossRefGoogle Scholar
  28. Mendoza J (2015) Rise and fall of Venezuelan industrial and artisanal marine fisheries: 1950–2010. Fisheries Centre, Working Paper Series 27:1–15Google Scholar
  29. Minns CK, Hurley DA (1988) Effects of net length and set time on fish catches in gill nets. N Am J Fish Manage 8:216–223CrossRefGoogle Scholar
  30. Navia A, Mejía-Falla P, Hleap JS (2016) Zoogeography of elasmobranchs in the Colombian Pacific Ocean and Caribbean Sea. Neotr Ichthyol 14:1–11Google Scholar
  31. Neff BD, Pitcher TE (2005) Genetic quality and sexual selection: an integrated framework for good genes and compatible genes. Mol Ecol 14:19–38CrossRefPubMedGoogle Scholar
  32. Oliver S, Braccini M, Newman SJ, Harvey ES (2015) Global patterns in the bycatch of sharks and rays. Mar Pol 54:86–97CrossRefGoogle Scholar
  33. Pauly D, Zeller D (2016) Catch reconstructions reveal that global marine fisheries catches are higher than reported and declining. Nat Commun 7:10244. doi: 10.1038/ncomms10244 CrossRefPubMedPubMedCentralGoogle Scholar
  34. Pereyra S, García G, Miller P, Oviedo S, Domingo A (2010) Low genetic diversity and population structure of the narrownose shark (Mustelus schmitti). Fish Res 106:468–473CrossRefGoogle Scholar
  35. R Development Core T (2011) R: a language and environment for statistical computing. R Foundation for Statistical Computing, Vienna, Austria http://www.r-project.org/. Accessed 1 Dec 2011Google Scholar
  36. Rigby CL, White WT, Smart JJ, Simpfendorfer CA (2016) Life histories of two deep-water Australian endemic elasmobranchs: Argus skate Dipturus polyommata and eastern spotted gummy shark Mustelus walkeri. J Fish Biol 88:1149–1174CrossRefPubMedGoogle Scholar
  37. Robertson R, Allen G (2016) Shorefishes of the tropical eastern Pacific: online information system. Version 2.0. Smithsonian Tropical Research Institute, balboaGoogle Scholar
  38. Rosa MR, Gadig OBF (2010) Taxonomic comments and an identification key to species for the smooth-hound sharks genus Mustelus link, 1790 (Chondrichthyes: Triakidae) from the western South Atlantic. Pan-American J Aq Sc 5:401–413Google Scholar
  39. Rudstam LG, Magnuson JJ, Tonn WM (1984) Size selectivity of passive fishing gear: a correction for encounter probability applied to gill nets. Can J Fish Aquat Sci 41:1252–1255CrossRefGoogle Scholar
  40. Saidi B, Bradai M, Bouian A (2009) Reproductive biology and diet of Mustelus punctulatus (Risso, 1826) (Chondrichthyes: Triakidae) from the Gulf of Gabès, central Mediterranean Sea. Sci Mar 73:249–258CrossRefGoogle Scholar
  41. Springer S (1939) Two new atlantic species of dog sharks, with a key to the species of Mustelus. Proc US Nat Mus 86:461–468CrossRefGoogle Scholar
  42. Tagliafico A, Rago N, Rangel S (2013) Fishery and biology of Rhinobatos percellens (Rajiformes: Rhinobatidae) caught by the artisanal fishery at la Pared beach, Venezuela. Rev Biol Trop 61:149–160CrossRefPubMedGoogle Scholar
  43. Tagliafico A, Hernández-Ávila I, Rangel M, Rago R (2015) Size of catch, reproduction and feeding of the small-eye smooth-hound, Mustelus higmani (Carcharhiniformes: Triakidae), in Margarita Island, Venezuela. Sci Mar 79:443–452CrossRefGoogle Scholar
  44. Uhlmann SS, Broadhurst MK (2015) Mitigating unaccounted fishing mortality in gillnets and traps. Fish Fish 16:183–229CrossRefGoogle Scholar
  45. Vila-Gispert A, Moreno-Amich R, García-Berthou E (2002) Gradients of life-history variation: an intercontinental comparison of fishes. Rev Fish Biol Fish 12:417–427CrossRefGoogle Scholar
  46. Walker TI (2016) Mustelus antarcticus. The IUCN red list of threatened species 2016: e.T39355A68634159. Accessed 9 Sept 2016Google Scholar
  47. Weigmann S (2016) Annotated checklist of the living sharks, batoids and chimaeras (Chondrichthyes) of the world, with a focus on biogeographical diversity. J Fish Biol 88:837–1037CrossRefPubMedGoogle Scholar
  48. Worm B, Davis B, Kettemer L, Ward-Paige CA, Chapman D, Heithaus MR, Kessel ST, Gruber SH (2013) Global catches, exploitation rates, and rebuilding options for sharks. Mar Pol 40:194–204CrossRefGoogle Scholar
  49. Zagaglia CR, Damiano C, Hazin FHV, Broadhurst MK (2011) Reproduction in Mustelus canis (Chondrichthyes: Triakidae) from an unexploited population off northern Brazil. J Appl Ichth 27:25–29CrossRefGoogle Scholar
  50. Zeh D, Zeh J (2000) Reproductive mode and speciation: the viviparity-driven conflict hypothesis. BioEssays 22:938–946CrossRefPubMedGoogle Scholar

Copyright information

© Springer Science+Business Media Dordrecht 2017

Authors and Affiliations

  • Alejandro Tagliafico
    • 1
    • 2
  • Néstor Rago
    • 3
  • Salomé Rangel
    • 1
    • 2
  • Matt K. Broadhurst
    • 4
    • 5
  1. 1.Escuela de Ciencias Aplicadas del Mar, Núcleo de Nueva EspartaUniversidad de OrienteIsla de MargaritaVenezuela
  2. 2.National Marine Science CentreSouthern Cross UniversityNSWAustralia
  3. 3.Universidad Nacional de Costa RicaHerediaCosta Rica
  4. 4.NSW Department of Primary Industries, Fisheries Conservation Technology UnitCoffs HarbourAustralia
  5. 5.Marine and Estuarine Ecology Unit, School of Biological SciencesUniversity of QueenslandBrisbaneAustralia

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