Pregnant giant devil ray (<i>Mobula mobular</i>) bycatch reveals potential Northern Gulf of California pupping ground

Gaskins, Leo C.

doi:10.1002/ecy.2689

Cited by 3 publications

(4 citation statements)

References 9 publications

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“…Despite reducing the devil ray species count by one, this study has confirmed the presence of three new mobulids for Venezuela In general, the specimen size ranges recorded from the authors' fisheries data were similar to those previously reported for the western Atlantic Ocean (e.g., Childs, 1997;Ehemann et al, 2017;Gadig et al, 2003;Hauser-Davis et al, 2021;Mendonça et al, 2018Mendonça et al, , 2020Tagliafico et al, 2014) and those of the eastern Pacific Ocean populations (e.g., Cuevas-Zimbr on et al, 2012;Gaskins, 2019;González-González et al, 2020;Serrano-L opez et al, 2021). Notably, this study provides new morphometrics in terms of maximum sizes for M. tarapacana, M. thurstoni and M. mobular along the western Atlantic coast.…”

Section: Citizen Science Datasupporting

confidence: 88%

“…In general, the specimen size ranges recorded from the authors’ fisheries data were similar to those previously reported for the western Atlantic Ocean ( e.g ., Childs, 1997; Ehemann et al ., 2017; Gadig et al ., 2003; González‐González & Ehemann, 2019; Hauser‐Davis et al ., 2021; Mendonça et al ., 2018, 2020; Tagliafico et al ., 2014) and those of the eastern Pacific Ocean populations ( e.g ., Cuevas‐Zimbrón et al ., 2012; Gaskins, 2019; González‐González et al ., 2020; Serrano‐López et al ., 2021). Notably, this study provides new morphometrics in terms of maximum sizes for M .…”

Section: Discussionmentioning

confidence: 99%

“…including the putative manta ray species), increasing the Venezuelan chondrichthyan species diversity to 125(Ehemann et al, 2019;Tavares et al, 2019).The total number of mobulids captured by the artisanal fleet at Margarita Island during this study was higher than other mobulid fishery records in the Caribbean Sea(Ehemann et al, 2017;, the Gulf of Mexico (Del Moral-Flores et al, 2020) and Brazil(Gadig et al, 2003;Gadig & Sampaio, 2002), but significantly lower than those recorded in the Gulf of California(González-González et al, 2020Palacios et al, 2021;Serrano-L opez et al, 2021). M. mobular was the most frequently landed species in this study (n = 26 or 60.5%), which is congruent with other similar studies (e.g.,Alfaro-Cordova et al, 2017;Coasaca-Céspedes et al, 2019;Gaskins, 2019;Serrano-L opez et al, 2021).…”

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confidence: 99%

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Manta and devil ray species occurrence and distribution in Venezuela, assessed through fishery landings and citizen science data

Ehemann

Acosta-Rodríguez

Tagliafico

et al. 2022

Journal of Fish Biology

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Manta and devil rays (collectively mobulids) belong to the monogeneric Mobulidae, which currently comprises 10 species, including a putative third manta ray species (Mobula cf. birostris). These large planktivorous rays are distributed throughout the tropical and subtropical oceans of the world. To date, six mobulid species are reported for the western Atlantic Ocean and the Caribbean Sea, three of which had previously been reported in Venezuela (Mobula birostris, Mobula tarapacana and Mobula hypostoma). A preliminary assessment of fishery landings and citizen science data was conducted to further the scientific knowledge of mobulid species in Venezuela. Fisheries landing data were collected at Margarita Island between 2006 and 2007, and again in 2014. Data mining of internet search engines and social media platforms spanning the past two decades was also conducted. A total of 117 individuals of five mobulid species were recorded: Mobula sp. (n = 27), M. birostris (n = 36), M. tarapacana (n = 3), Mobula mobular (n = 26),Mobula thurstoni (n = 14) and M. cf. birostris (n = 11). The latter three species are the first confirmation of these species in Venezuela. The authors found no records of the previously reported M. hypostoma during this study. Although the occurrence of M. hypostoma in Venezuela remains possible because of the broad regional range of this species, its current presence in Venezuela is invalidated given the repeated misidentifications which have occurred in previous publications. The results of this study increase the number of reported mobulid ray species in Venezuela to five (excluding M. hypostoma). The overall data from juvenile manta rays and pregnant M. mobular and M. thurstoni recorded in this study, combined with the occurrence of all but one species of mobulid ray found in the western Atlantic Ocean, suggest Venezuela provides important habitat for this threatened family of rays.

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Section: Citizen Science Datasupporting

confidence: 88%

Section: Discussionmentioning

confidence: 99%

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confidence: 99%

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Manta and devil ray species occurrence and distribution in Venezuela, assessed through fishery landings and citizen science data

Ehemann

Acosta-Rodríguez

Tagliafico

et al. 2022

Journal of Fish Biology

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“…birostris for both areas), and in Indonesia 12 ( Mobula alfredi ). In addition, a potential pupping ground for Mobula mobular in the Northern Gulf of California 13 , has been suggested, but more research is needed to confirm.…”

Section: Introductionmentioning

confidence: 99%

Description of first nursery area for a pygmy devil ray species (Mobula munkiana) in the Gulf of California, Mexico

Palacios

Hoyos-Padilla

Trejo-Ramírez³

et al. 2021

Sci Rep

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Munk’s pygmy devil rays (Mobula munkiana) are medium-size, zooplanktivorous filter feeding, elasmobranchs characterized by aggregative behavior, low fecundity and delayed reproduction. These traits make them susceptible to targeted and by-catch fisheries and are listed as Vulnerable on the IUCN Red List. Multiple studies have examined fisheries impacts, but nursery areas or foraging neonate and juvenile concentrations have not been examined. This study describes the first nursery area for M. munkiana at Espiritu Santo Archipelago, Mexico. We examined spatial use of a shallow bay during 22 consecutive months in relation to environmental patterns using traditional tagging (n = 95) and acoustic telemetry (n = 7). Neonates and juveniles comprised 84% of tagged individuals and their residency index was significantly greater inside than outside the bay; spending a maximum of 145 consecutive days within the bay. Observations of near-term pregnant females, mating behavior, and neonates indicate an April to June pupping period. Anecdotal photograph review indicated that the nursery area is used by neonates and juveniles across years. These findings confirm, for the first time, the existence of nursery areas for Munk’s pygmy devil rays and the potential importance of shallow bays during early life stages for the conservation of this species.

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Sustained fishing threatens globally protected species: Insights from digital catch and genomic data

Segura-García,

Moore,

McCoy

et al. 2024

Global Ecology and Conservation

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Pregnant giant devil ray (Mobula mobular) bycatch reveals potential Northern Gulf of California pupping ground

Cited by 3 publications

References 9 publications

Manta and devil ray species occurrence and distribution in Venezuela, assessed through fishery landings and citizen science data

Manta and devil ray species occurrence and distribution in Venezuela, assessed through fishery landings and citizen science data

Description of first nursery area for a pygmy devil ray species (Mobula munkiana) in the Gulf of California, Mexico

Sustained fishing threatens globally protected species: Insights from digital catch and genomic data

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