Multi-locus phylogeny of the catfish genus Ictalurus Rafinesque, 1820 (Actinopterygii, Siluriformes) and its systematic and evolutionary implications

Pérez‐Rodríguez, Rodolfo; Domínguez‐Domínguez, Omar; Pedraza-Lara, Carlos; Rosas-Valdez, Rogelio; León, Gerardo Pérez‐Ponce de; García-Andrade, Ana Berenice; Doadrio, Ignacio

doi:10.1186/s12862-023-02134-w

Cited by 3 publications

(1 citation statement)

References 84 publications

(113 reference statements)

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“…The species was once widespread throughout northwestern Mexico and the southwestern United States but is now extinct in the U.S. Southwest (Stewart et al 2017) and is nearly extirpated from most historical locations within the Sonora, Mayo, and Casas Grandes River basins of Mexico (Miller et al 2009; Minckley and Marsh 2009). Genetically unhybridized Yaqui Catfish are known to exist only in the Yaqui and Fuerte River basins of Sonora, Mexico, spanning fragmented and small populations (Gutierrez‐Barragan et al 2021; Perez‐Rodriguez et al 2023).…”

Section: Introductionmentioning

confidence: 99%

The optimal stocking strategy for Yaqui Catfish

Stewart,

Barron,

Harden

et al. 2023

N American J Fish Manag

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The Yaqui Catfish Ictalurus pricei, a species endemic to the southwestern United States and west‐central Chihuahua and Sonora, Mexico, is extinct in the United States and extremely endangered in Mexico due to habitat loss and hybridization with nonnative Channel Catfish Ictalurus punctatus. To re‐establish populations in the United States, a binational program consisting of broodstock collection, fish propagation, stocking, and post‐stocking monitoring is necessary. This programmatic approach is encapsulated within a Conservation Propagation and Stocking Program (CPSP), which documents important recovery actions, such as genetic management, fish culture, stocking, and post‐stocking assessments. The focus of our work is to identify the optimal stocking strategy for Yaqui Catfish, thereby informing the framework of a CPSP for the species’ recovery. Our strategy involved simulating population growth using an age‐structured simulation model with varying amounts of stocking contribution rates, stocking density, and stocking frequency, and incorporating these biological data with economic information within a utility function to quantify stocking costs. The optimal strategy requires releasing Yaqui Catfish at a density of 200 ha‐1 every 5 years. This strategy excludes natural recruitment, as historically, stocked Yaqui Catfish inhabited waters that were either too small or void of habitat to induce natural spawning. However, were larger waters or waters having appropriate habitats (e.g., interstitial spaces) also stocked, it should increase natural recruitment, thereby enabling populations to become self‐sustaining and drastically reduce the reliance on hatcheries for stocking and salvaging declining populations. Our results provide important stocking recommendations within a CPSP, emphasizing the need to build a broodstock before genetically pure Yaqui Catfish disappear. The successful implementation of the optimal stocking strategy requires multiple locations to stock fish and is contingent on strengthening binational partnerships. This approach fills an important void in Yaqui Catfish re‐establishment, helping prime the successful recovery of this species.

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Section: Introductionmentioning

confidence: 99%

The optimal stocking strategy for Yaqui Catfish

Stewart,

Barron,

Harden

et al. 2023

N American J Fish Manag

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Environmental DNA mitochondrial markers to assess potential occupancy of Endangered Yaqui catfish in the Yaqui River basin, Mexico

Stewart,

Hafen,

Hendrickson

et al. 2024

Endang. Species. Res.

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Acquiring data on rare and threatened species can be challenging, particularly in remote areas. Environmental DNA (eDNA) offers a less effort-intensive method for detecting species compared to physical fish sampling methods. In our study, we focused on the Endangered Yaqui catfish Ictalurus pricei, a freshwater fish endemic to the Sonoran desert in Arizona, USA, and Sonora, Mexico, and the non-native channel catfish I. punctatus. We developed and employed mitochondrial eDNA markers to sample 35 locations in the Yaqui River basin in Mexico and employed a hierarchical Bayesian formulation of a co-occurrence model to investigate the interactions between the species while accounting for the effects of covariates on species occupancy and detection. Our best model included the influence of channel catfish mitochondrial eDNA on detecting Yaqui catfish mitochondrial eDNA, and we found that channel catfish mitochondrial eDNA detection was negatively related with water temperature and elevation but positively related to substrate size. Yaqui catfish occupancy, as determined with mitochondrial eDNA detection, was best explained by stream permanence and the presence of forested areas, while channel catfish mitochondrial eDNA occurrences were also associated with stream permanence, as well as conifer and shrub-dominated landscapes. Non-native channel catfish mitochondrial eDNA was found in all but 5 locations where Yaqui catfish mitochondrial eDNA was detected, indicating a high likelihood of interaction and hybridization. This potential for hybridization poses a significant threat to the already Endangered Yaqui catfish, emphasizing the need to protect and secure remaining populations for their long-term survival.

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Geographic genetic variation in the Coral Hawkfish, Cirrhitichthys oxycephalus (Cirrhitidae), in relation to biogeographic barriers across the Tropical Indo-Pacific

Torres-García,

Gaither,

Robertson

et al. 2024

PeerJ

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The Tropical Indo-Pacific (TIP) includes about two thirds of the world’s tropical oceans and harbors an enormous number of marine species. The distributions of those species within the region is affected by habitat discontinuities and oceanographic features. As well as many smaller ones, the TIP contains seven large recognized biogeographic barriers that separate the Red Sea and Indian Ocean, the Indian from the Pacific Ocean, the central and eastern Pacific, the Hawaiian archipelago, the Marquesas and Easter Islands. We examined the genetic structuring of populations of Cirrhitichthys oxycephalus, a small cryptic species of reef fish, across its geographic range, which spans the longitudinal limits of the TIP. We assessed geographic variation in the mitochondrial cytb gene and the nuclear RAG1 gene, using 166 samples collected in 46 localities from the western to eastern edges of the TIP. Sequences from cytb show three well-structured groups that are separated by large genetic distances (1.58–2.96%): two in the Tropical Eastern Pacific (TEP), one at Clipperton Atoll another occupying the rest of that region and the third that ranges across the remainder of the TIP, from the central Pacific to the Red Sea and South Africa. These results indicate that the ~4,000 km wide Eastern Pacific Barrier between the central and eastern Pacific is an efficient barrier separating the two main groups. Further, the ~950 km of open ocean that isolates Clipperton Atoll from the rest of the TEP is also an effective barrier. Contrary to many other cases, various major and minor barriers from the Central Indo-Pacific to the Red Sea are not effective against dispersal by C. oxycephalus, although this species has not colonized the Hawiian islands and Easter Island. The nuclear gene partially supports the genetic structure evident in cytb, although all haplotypes are geographically mixed.

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Multi-locus phylogeny of the catfish genus Ictalurus Rafinesque, 1820 (Actinopterygii, Siluriformes) and its systematic and evolutionary implications

Cited by 3 publications

References 84 publications

The optimal stocking strategy for Yaqui Catfish

The optimal stocking strategy for Yaqui Catfish

Environmental DNA mitochondrial markers to assess potential occupancy of Endangered Yaqui catfish in the Yaqui River basin, Mexico

Geographic genetic variation in the Coral Hawkfish, Cirrhitichthys oxycephalus (Cirrhitidae), in relation to biogeographic barriers across the Tropical Indo-Pacific

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